From cf0cf705f6f38671313e74071de25a0742128893 Mon Sep 17 00:00:00 2001 From: ci-bot Date: Tue, 3 Sep 2024 01:29:48 +0000 Subject: [PATCH] Deployed 09e43797 to v1.13.x with MkDocs 1.6.1 and mike 2.1.3 --- v1.13.x/404.html | 2 +- .../index.html | 8 +- .../advance/cilium-hubble-observe/index.html | 8 +- .../advance/cilium-networkpolicy/index.html | 8 +- v1.13.x/advance/dhcp/index.html | 8 +- v1.13.x/advance/dpdk/index.html | 8 +- v1.13.x/advance/external-gateway/index.html | 8 +- v1.13.x/advance/fastpath/index.html | 8 +- v1.13.x/advance/multi-nic/index.html | 8 +- v1.13.x/advance/nat-policy-rule/index.html | 8 +- v1.13.x/advance/node-local-dns/index.html | 8 +- v1.13.x/advance/offload-corigine/index.html | 8 +- v1.13.x/advance/offload-mellanox/index.html | 8 +- v1.13.x/advance/offload-yunsilicon/index.html | 8 +- v1.13.x/advance/offload-yusur/index.html | 8 +- v1.13.x/advance/overlay-with-route/index.html | 8 +- v1.13.x/advance/ovn-eip-fip-snat/index.html | 8 +- 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v1.13.x/assets/stylesheets/main.3cba04c6.min.css.map diff --git a/v1.13.x/404.html b/v1.13.x/404.html index 7e3648374..b59242f10 100644 --- a/v1.13.x/404.html +++ b/v1.13.x/404.html @@ -1 +1 @@ - Kube-OVN 文档

404 - Not found

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404 - Not found

\ No newline at end of file diff --git a/v1.13.x/advance/accelerate-intra-node-tcp-with-ebpf/index.html b/v1.13.x/advance/accelerate-intra-node-tcp-with-ebpf/index.html index 2c5c39230..1bbff88c8 100644 --- a/v1.13.x/advance/accelerate-intra-node-tcp-with-ebpf/index.html +++ b/v1.13.x/advance/accelerate-intra-node-tcp-with-ebpf/index.html @@ -1,4 +1,4 @@ - 使用 eBPF 加速节点内 TCP 通信 - Kube-OVN 文档
跳转至

使用 eBPF 加速节点内 TCP 通信

在一些边缘和 5G 的场景下，同节点内的 Pod 之间会进行大量的 TCP 通信，通过使用 Intel 开源的 istio-tcpip-bypass 项目，Pod 可以借助 eBPF 的能力绕过主机的 TCP/IP 协议栈，直接进行 socket 通信，从而大幅降低延迟并提升吞吐量。

基本原理

在当前的实现下，同主机的两个 Pod 进行 TCP 进行通信需要经过大量的网络栈，包括 TCP/IP, netfilter，OVS 等如下图所示：

without eBPF

istio-tcpip-bypass 插件可以自动分析并识别出同主机内的 TCP 通信，并绕过复杂的内核栈从而可以直接进行 socket 间的数据传输， 来降低网络栈处理开销，如下图所示：

with eBPF

由于该组件可以自动识别同主机内的 TCP 通信，并进行优化。在基于代理模式的 Service Mesh 环境下，该组件也可以增强 Service Mesh 的性能表现。

更多技术实现细节可以参考 Tanzu Service Mesh Acceleration using eBPF。

环境准备

eBPF 对内核版本有一定要求，推荐使用 Ubuntu 20.04 和 Linux 5.4.0-74-generic 版本内核进行实验。

实验步骤

在同一个节点上部署两个性能测试 Pod，若集群内存在多台机器需要指定 nodeSelector：

# kubectl create deployment perf --image=kubeovn/perf:dev --replicas=2
+       
使用 eBPF 加速节点内 TCP 通信
 
在一些边缘和 5G 的场景下，同节点内的 Pod 之间会进行大量的 TCP 通信，通过使用 Intel 开源的 istio-tcpip-bypass 项目，Pod 可以借助 eBPF 的能力绕过主机的 TCP/IP 协议栈，直接进行 socket 通信，从而大幅降低延迟并提升吞吐量。
 
基本原理
 
在当前的实现下，同主机的两个 Pod 进行 TCP 进行通信需要经过大量的网络栈，包括 TCP/IP, netfilter，OVS 等如下图所示：
 
without eBPF
 
istio-tcpip-bypass 插件可以自动分析并识别出同主机内的 TCP 通信，并绕过复杂的内核栈从而可以直接进行 socket 间的数据传输， 来降低网络栈处理开销，如下图所示：
 
with eBPF
 
由于该组件可以自动识别同主机内的 TCP 通信，并进行优化。在基于代理模式的 Service Mesh 环境下，该组件也可以增强 Service Mesh 的性能表现。
 
更多技术实现细节可以参考 Tanzu Service Mesh Acceleration using eBPF。
 
环境准备
 
eBPF 对内核版本有一定要求，推荐使用 Ubuntu 20.04 和 Linux 5.4.0-74-generic 版本内核进行实验。
 
实验步骤
 
在同一个节点上部署两个性能测试 Pod，若集群内存在多台机器需要指定 nodeSelector：
 
# kubectl create deployment perf --image=kubeovn/perf:dev --replicas=2
 deployment.apps/perf created
 # kubectl get pod -o wide
 NAME                    READY   STATUS    RESTARTS   AGE   IP           NODE     NOMINATED NODE   READINESS GATES
@@ -20,7 +20,7 @@
 
 
部署 istio-tcpip-bypass 插件：
 
kubectl apply -f https://raw.githubusercontent.com/intel/istio-tcpip-bypass/main/bypass-tcpip-daemonset.yaml
 
 
再次进入 perf client 容器进行性能测试：
 
# kubectl exec -it perf-7697bc6ddf-p2xpt sh
 / # qperf -t 60 100.64.0.3 -ub -oo msg_size:1:16K:*4 -vu tcp_lat tcp_bw
-
 
测试结果
 
根据测试结果 TCP 延迟在不同数据包大小的情况下会有 40% ~ 60% 的延迟下降，在数据包大于 1024 字节时吞吐量会有 40% ~ 80% 提升。
 
  
 Packet Size (byte) eBPF tcp_lat (us) Default tcp_lat (us) eBPF tcp_bw (Mb/s) Default tcp_bw(Mb/s) 
   
 1 20.2 44.5 1.36 4.27 
 
 4 20.2 48.7 5.48 16.7 
 
 16 19.6 41.6 21.7 63.5 
 
 64 18.8 41.3 96.8 201 
 
 256 19.2 36 395 539 
 
 1024 18.3 42.4 1360 846 
 
 4096 16.5 62.6 4460 2430 
 
 16384 20.2 58.8 9600 6900 
  
 
 
在测试的硬件环境下，数据包小于 512 字节时，使用 eBPF 优化吞吐量指标会低于默认配置下的吞吐量。 该情况可能和默认配置下网卡开启 TCP 聚合优化相关。如果应用场景对小包吞吐量敏感，需要在相应环境下 进行测试判断是否开启 eBPF 优化。我们也会后续对 eBPF TCP 小包场景的吞吐量进行优化。
 
 
参考资料
 
     
  1. istio-tcpip-bypass
    2.  
  2. Deep Dive TCP/IP Bypass with eBPF in Service Mesh
    3.  
  3. Tanzu Service Mesh Acceleration using eBPF
    4.  
 
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评论
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跳转至

Cilium 网络流量观测

Kube-OVN 当前已经支持与 Cilium 集成，具体操作可以参考 Cilium 集成。

Cilium 提供了丰富的网络流量观测能力，流量可观测性是由 Hubble 提供的。Hubble 可以观察节点、集群甚至多集群场景下跨集群的流量。

安装 Hubble

默认的 Cilium 集成安装中，并没有安装 Hubble 相关组件，因此要支持流量观测，需要先在环境上补充安装 Hubble。

执行以下命令，使用 helm 安装 Hubble：

helm upgrade cilium cilium/cilium --version 1.11.6 \
+       
Cilium 网络流量观测
 
Kube-OVN 当前已经支持与 Cilium 集成，具体操作可以参考 Cilium 集成。
 
Cilium 提供了丰富的网络流量观测能力，流量可观测性是由 Hubble 提供的。Hubble 可以观察节点、集群甚至多集群场景下跨集群的流量。
 
安装 Hubble
 
默认的 Cilium 集成安装中，并没有安装 Hubble 相关组件，因此要支持流量观测，需要先在环境上补充安装 Hubble。
 
执行以下命令，使用 helm 安装 Hubble：
 
helm upgrade cilium cilium/cilium --version 1.11.6 \
    --namespace kube-system \
    --reuse-values \
    --set hubble.relay.enabled=true \
@@ -124,7 +124,7 @@
 hubble_tcp_flags_total{family="IPv4",flag="RST"} 301
 hubble_tcp_flags_total{family="IPv4",flag="SYN"} 1169
 hubble_tcp_flags_total{family="IPv4",flag="SYN-ACK"} 1169
-
 
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\ No newline at end of file diff --git a/v1.13.x/advance/cilium-networkpolicy/index.html b/v1.13.x/advance/cilium-networkpolicy/index.html index 5a130ff85..01788ed8f 100644 --- a/v1.13.x/advance/cilium-networkpolicy/index.html +++ b/v1.13.x/advance/cilium-networkpolicy/index.html @@ -1,4 +1,4 @@ - Cilium NetworkPolicy 支持 - Kube-OVN 文档
跳转至

Cilium NetworkPolicy 支持

Kube-OVN 当前已经支持与 Cilium 集成，具体操作可以参考 Cilium 集成。

在集成 Cilium 之后，就可以使用 Cilium 优秀的网络策略能力，实现对流量访问的控制。以下文档提供了对 Cilium L3 和 L4 网络策略能力的集成验证。

验证步骤

创建测试 Pod

创建 namespace test。参考以下 yaml，在 test namespace 中创建指定 label app=test 的 Pod，作为测试访问的目的 Pod。

apiVersion: apps/v1
+       
Cilium NetworkPolicy 支持
 
Kube-OVN 当前已经支持与 Cilium 集成，具体操作可以参考 Cilium 集成。
 
在集成 Cilium 之后，就可以使用 Cilium 优秀的网络策略能力，实现对流量访问的控制。以下文档提供了对 Cilium L3 和 L4 网络策略能力的集成验证。
 
验证步骤
 
创建测试 Pod
 
创建 namespace test。参考以下 yaml，在 test namespace 中创建指定 label app=test 的 Pod，作为测试访问的目的 Pod。
 
apiVersion: apps/v1
 kind: Deployment
 metadata:
   labels:
@@ -197,7 +197,7 @@
 * Connection timeout after 10001 ms
 * Closing connection 0
 curl: (28) Connection timeout after 10001 ms
-
 
网络策略生效后，跨 Namespace 的访问，依然是被禁止的，跟 L3 网络策略测试结果一致。
 
在 L4 网络规则生效后，ping 无法使用，但是符合策略规则的 TCP 访问，是可以正常执行的。
 
关于 ICMP 的限制，可以参考官方说明 L4 限制说明。
 
L7 网络策略测试
 
chaining 模式下，L7 网络策略目前是存在问题的。在 Cilium 官方文档中，对这种情况给出了说明，参考 Generic Veth Chaining。
 
这个问题使用 issue 12454 跟踪，目前还没有解决。
 
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DHCP 设置

在使用 SR-IOV 或 DPDK 类型网络时，KubeVirt 内置的 DHCP 无法在该网络模式下工作。Kube-OVN 可以利用 OVN 的 DHCP 能力在子网级别设置 DHCP 选项，从而帮助该网络类型的 KubeVirt 虚机正常使用 DHCP 获得分配的 IP 地址。Kube-OVN 同时支持 DHCPv4 和 DHCPv6。

子网 DHCP 的配置如下：

apiVersion: kubeovn.io/v1
+       
DHCP 设置
 
在使用 SR-IOV 或 DPDK 类型网络时，KubeVirt 内置的 DHCP 无法在该网络模式下工作。Kube-OVN 可以利用 OVN 的 DHCP 能力在子网级别设置 DHCP 选项，从而帮助该网络类型的 KubeVirt 虚机正常使用 DHCP 获得分配的 IP 地址。Kube-OVN 同时支持 DHCPv4 和 DHCPv6。
 
子网 DHCP 的配置如下：
 
apiVersion: kubeovn.io/v1
 kind: Subnet
 metadata:
   name: sn-dual
@@ -31,7 +31,7 @@
   dhcpV6Options: "server_id=00:00:00:2E:2F:C5"
   enableIPv6RA: true
   ipv6RAConfigs: "address_mode=dhcpv6_stateful,max_interval=30,min_interval=5,send_periodic=true"
-
 
     
  • enableDHCP: 是否开启子网的 DHCP 功能。
    •  
  • dhcpV4Options,dhcpV6Options: 该字段直接暴露 ovn-nb 内 DHCP 相关选项，请参考 DHCP Options。 默认值分别为 "lease_time=3600, router=$ipv4_gateway, server_id=169.254.0.254, server_mac=$random_mac" 和 server_id=$random_mac。
    •  
  • enableIPv6RA: 是否开启 DHCPv6 的路由广播功能。
    •  
  • ipv6RAConfigs：该字段直接暴露 ovn-nb 内 Logical_Router_Port 相关选项，请参考 Logical Router Port 默认值为 address_mode=dhcpv6_stateful, max_interval=30, min_interval=5, send_periodic=true。
    •  
 
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\ No newline at end of file diff --git a/v1.13.x/advance/dpdk/index.html b/v1.13.x/advance/dpdk/index.html index 6530f849a..96d5835b3 100644 --- a/v1.13.x/advance/dpdk/index.html +++ b/v1.13.x/advance/dpdk/index.html @@ -1,4 +1,4 @@ - DPDK 支持 - Kube-OVN 文档

DPDK 支持

该文档介绍 Kube-OVN 如何和 OVS-DPDK 结合，给 KubeVirt 的虚机提供 DPDK 类型的网络接口。

上游的 KubeVirt 目前还未支持 OVS-DPDK，用户需要自己通过相关 patch Vhostuser implementation 构建 KubeVirt 或 KVM Device Plugin 来使用 OVS-DPDK。

前提条件

  • 节点需提供专门给 DPDK 驱动运行的网卡。
  • 节点需开启 Hugepages。

网卡设置 DPDK 驱动

这里我们使用 driverctl 为例进行操作，具体参数和其他驱动使用请参考 DPDK 文档进行操作。

driverctl set-override 0000:00:0b.0 uio_pci_generic
+       
DPDK 支持
 
该文档介绍 Kube-OVN 如何和 OVS-DPDK 结合，给 KubeVirt 的虚机提供 DPDK 类型的网络接口。
 
 
上游的 KubeVirt 目前还未支持 OVS-DPDK，用户需要自己通过相关 patch Vhostuser implementation 构建 KubeVirt 或 KVM Device Plugin 来使用 OVS-DPDK。
 
 
前提条件
 
     
  • 节点需提供专门给 DPDK 驱动运行的网卡。
    •  
  • 节点需开启 Hugepages。
    •  
 
网卡设置 DPDK 驱动
 
这里我们使用 driverctl 为例进行操作，具体参数和其他驱动使用请参考 DPDK 文档进行操作。
 
driverctl set-override 0000:00:0b.0 uio_pci_generic
 
 
节点配置
 
对支持 OVS-DPDK 的节点打标签，以便 Kube-OVN 进行识别处理：
 
kubectl label nodes <node> ovn.kubernetes.io/ovs_dp_type="userspace"
 
 
在支持 OVS-DPDK 节点的 /opt/ovs-config 目录下创建配置文件 ovs-dpdk-config：
 
ENCAP_IP=192.168.122.193/24
 DPDK_DEV=0000:00:0b.0
@@ -204,7 +204,7 @@
 ip addr add 10.16.0.96/16 dev eth0
 ip ro add default via 10.16.0.1
 ping 114.114.114.114
-
 
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\ No newline at end of file diff --git a/v1.13.x/advance/external-gateway/index.html b/v1.13.x/advance/external-gateway/index.html index 95b3d780c..96219de55 100644 --- a/v1.13.x/advance/external-gateway/index.html +++ b/v1.13.x/advance/external-gateway/index.html @@ -1,4 +1,4 @@ - 外部网关设置 - Kube-OVN 文档

外部网关设置

在一些场景下，对所有容器访问外部的流量需要通过一个外部的网关进行统一的管理和审计。 Kube-OVN 可以通过在子网中进行相应的路由配置，将出网流量转发至对应的外部网关。

使用方式

kind: Subnet
+       
外部网关设置
 
在一些场景下，对所有容器访问外部的流量需要通过一个外部的网关进行统一的管理和审计。 Kube-OVN 可以通过在子网中进行相应的路由配置，将出网流量转发至对应的外部网关。
 
使用方式
 
kind: Subnet
 apiVersion: kubeovn.io/v1
 metadata:
   name: external
@@ -17,7 +17,7 @@
   externalEgressGateway: 192.168.0.1
   policyRoutingTableID: 1000
   policyRoutingPriority: 1500
-
 
     
  • natOutgoing: 需要设置为 false。
    •  
  • externalEgressGateway：设置为外部网关的地址，需要和网关节点在同一个二层可达域。
    •  
  • policyRoutingTableID：使用的本地策略路由表的 TableID 每个子网均需不同以避免冲突。
    •  
  • policyRoutingPriority：路由优先级，为避免后续用户定制化的其他路由操作冲突，这里可以指定路由优先级，若无特殊需求填入任意值即可。
    •  
 
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\ No newline at end of file diff --git a/v1.13.x/advance/fastpath/index.html b/v1.13.x/advance/fastpath/index.html index 291613b33..ef77bf4ae 100644 --- a/v1.13.x/advance/fastpath/index.html +++ b/v1.13.x/advance/fastpath/index.html @@ -1,4 +1,4 @@ - 手动编译 FastPath 模块 - Kube-OVN 文档

手动编译 FastPath 模块

经过数据平面的性能 Profile，Netfilter 在容器内和宿主机上的相关处理消耗了 20% 左右的 CPU 资源，FastPath 模块可以绕过 Netfilter 从而 降低 CPU 的消耗和延迟，并提升吞吐量。本文档将介绍如何手动编译 FastPath 模块。

下载相关内核模块代码

git clone --depth=1 https://github.com/kubeovn/kube-ovn.git
+       
手动编译 FastPath 模块
 
经过数据平面的性能 Profile，Netfilter 在容器内和宿主机上的相关处理消耗了 20% 左右的 CPU 资源，FastPath 模块可以绕过 Netfilter 从而 降低 CPU 的消耗和延迟，并提升吞吐量。本文档将介绍如何手动编译 FastPath 模块。
 
下载相关内核模块代码
 
git clone --depth=1 https://github.com/kubeovn/kube-ovn.git
 
 
安装依赖
 
这里以 CentOS 为例下载相关依赖：
 
yum install -y kernel-devel-$(uname -r) gcc elfutils-libelf-devel
 
 
编译相关模块
 
针对 3.x 的内核：
 
cd kube-ovn/fastpath
 make all
@@ -18,7 +18,7 @@
 [619631.323798] init_module,kube_ovn_fastpath_post_routing
 [619631.323800] init_module,kube_ovn_fastpath_pre_routing
 [619631.323801] init_module,kube_ovn_fastpath_local_in
-
 
如需卸载模块，可将该模块从 /tmp 目录下移除，kube-ovn-cni 会自动卸载该模块。
 
 
该模块在机器重启后不会自动加载，如需自动加载请根据系统弄配置编写相应自启动脚本。
 
 
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\ No newline at end of file diff --git a/v1.13.x/advance/multi-nic/index.html b/v1.13.x/advance/multi-nic/index.html index 7aef1aba6..4af012cef 100644 --- a/v1.13.x/advance/multi-nic/index.html +++ b/v1.13.x/advance/multi-nic/index.html @@ -1,4 +1,4 @@ - 多网卡管理 - Kube-OVN 文档

多网卡管理

Kube-OVN 可以为其他 CNI 网络插件，例如 macvlan、vlan、host-device 等插件提供集群级别的 IPAM 能力， 其他网络插件也可以使用到 Kube-OVN 中子网以及固定 IP 功能。

同时 Kube-OVN 也支持多块网卡均为 Kube-OVN 类型网卡情况下的地址管理。

工作原理

多网卡管理：

下面是由 Multus CNI 提供的连接到 pod 的网络接口示意图。图中显示 pod 有三个接口：eth0、net0 和 net1。 eth0 连接 kubernetes 集群网络，用于连接 kubernetes 服务器（如 kubernetes api-server、kubelet 等）。 net0 和 net1 是附加网络接口，通过使用其他 CNI 插件（如 vlan/vxlan/ptp）连接其他网络。

multu-cni-multi-nic

IPAM：

通过使用 Multus CNI, 我们可以给一个 Pod 添加多块不同网络的网卡。 然而我们仍然缺乏对集群范围内不同网络的 IP 地址进行管理的能力。在 Kube-OVN 中，我们已经能够通过 Subnet 和 IP 的 CRD 来进行 IP 的高级管理， 例如子网管理，IP 预留，随机分配，固定分配等。现在我们对子网进行扩展，来接入其他不同的网络插件，使得其他网络插件也可以使用 Kube-OVN 的 IPAM 功能。

工作流程

work-flow

上图展示了如何通过 Kube-OVN 来管理其他网络插件的 IP 地址。其中容器的 eth0 网卡接入 OVN 网络，net1 网卡接入其他 CNI 网络。 net1 网络的网络定义来自于 multus-cni 中的 NetworkAttachmentDefinition 资源定义。

当 Pod 创建时，kube-ovn-controller 会监听到 Pod 添加事件，并根据 Pod 中的 annotation 去寻找到对应的 Subnet 并从中进行 IP 的分配和管理， 并将 Pod 所分配到的地址信息写回到 Pod annotation 中。

在容器所在机器的 CNI 可以通过在配置中配置 kube-ovn-cni 作为 ipam 插件, kube-ovn-cni 将会读取 Pod annotation 并将地址信息通过 CNI 协议的标准格式返回给相应的 CNI 插件。

使用方法

安装 Kube-OVN 和 Multus

请参考 Kube-OVN 一键安装 和 Multus how to use 来安装 Kube-OVN 和 Multus-CNI。

为其他 CNI 提供 IPAM

此时主网卡为 Kube-OVN 类型网卡，附属网卡为其他类型 CNI。

创建 NetworkAttachmentDefinition

这里我们使用 macvlan 作为容器网络的第二个网络，并将其 ipam 设置为 kube-ovn：

# 加载 macvlan 模块
+       
多网卡管理
 
Kube-OVN 可以为其他 CNI 网络插件，例如 macvlan、vlan、host-device 等插件提供集群级别的 IPAM 能力， 其他网络插件也可以使用到 Kube-OVN 中子网以及固定 IP 功能。
 
同时 Kube-OVN 也支持多块网卡均为 Kube-OVN 类型网卡情况下的地址管理。
 
工作原理
 
多网卡管理：
 
下面是由 Multus CNI 提供的连接到 pod 的网络接口示意图。图中显示 pod 有三个接口：eth0、net0 和 net1。 eth0 连接 kubernetes 集群网络，用于连接 kubernetes 服务器（如 kubernetes api-server、kubelet 等）。 net0 和 net1 是附加网络接口，通过使用其他 CNI 插件（如 vlan/vxlan/ptp）连接其他网络。
 
multu-cni-multi-nic
 
IPAM：
 
通过使用 Multus CNI, 我们可以给一个 Pod 添加多块不同网络的网卡。 然而我们仍然缺乏对集群范围内不同网络的 IP 地址进行管理的能力。在 Kube-OVN 中，我们已经能够通过 Subnet 和 IP 的 CRD 来进行 IP 的高级管理， 例如子网管理，IP 预留，随机分配，固定分配等。现在我们对子网进行扩展，来接入其他不同的网络插件，使得其他网络插件也可以使用 Kube-OVN 的 IPAM 功能。
 
工作流程
 
work-flow
 
上图展示了如何通过 Kube-OVN 来管理其他网络插件的 IP 地址。其中容器的 eth0 网卡接入 OVN 网络，net1 网卡接入其他 CNI 网络。 net1 网络的网络定义来自于 multus-cni 中的 NetworkAttachmentDefinition 资源定义。
 
当 Pod 创建时，kube-ovn-controller 会监听到 Pod 添加事件，并根据 Pod 中的 annotation 去寻找到对应的 Subnet 并从中进行 IP 的分配和管理， 并将 Pod 所分配到的地址信息写回到 Pod annotation 中。
 
在容器所在机器的 CNI 可以通过在配置中配置 kube-ovn-cni 作为 ipam 插件, kube-ovn-cni 将会读取 Pod annotation 并将地址信息通过 CNI 协议的标准格式返回给相应的 CNI 插件。
 
使用方法
 
安装 Kube-OVN 和 Multus
 
请参考 Kube-OVN 一键安装 和 Multus how to use 来安装 Kube-OVN 和 Multus-CNI。
 
为其他 CNI 提供 IPAM
 
此时主网卡为 Kube-OVN 类型网卡，附属网卡为其他类型 CNI。
 
创建 NetworkAttachmentDefinition
 
这里我们使用 macvlan 作为容器网络的第二个网络，并将其 ipam 设置为 kube-ovn：
 
# 加载 macvlan 模块
 sudo modprobe macvlan
 
 
apiVersion: "k8s.cni.cncf.io/v1"
 kind: NetworkAttachmentDefinition
@@ -198,7 +198,7 @@
   - name: samplepod
     command: ["/bin/ash", "-c", "trap : TERM INT; sleep infinity & wait"]
     image: docker.io/library/alpine:edge
-
 
     
  • k8s.v1.cni.cncf.io/networks: 取值为对应的 NetworkAttachmentDefinition 的 <namespace>/<name>
    •  
  • attachnet.default.ovn.kubernetes.io/logical_switch: 取值为子网名
    •  
 
 
注意: 通过<networkAttachmentName>.<networkAttachmentNamespace>.kubernetes.io/logical_switch 指定子网的优先级高于通过 provider 指定子网，对于附属网卡为 Kube-OVN 类型的 Pod，支持创建固定 IP 的 Pod、创建使用固定 IP 的工作负载、创建默认路由为 macvlan 的 Pod，同时也支持创建主网卡为 Kube-OVN 类型的 Pod，配置方式可参考上一节。
 
 
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\ No newline at end of file diff --git a/v1.13.x/advance/nat-policy-rule/index.html b/v1.13.x/advance/nat-policy-rule/index.html index c30cc2cb8..1acc88d2b 100644 --- a/v1.13.x/advance/nat-policy-rule/index.html +++ b/v1.13.x/advance/nat-policy-rule/index.html @@ -1,4 +1,4 @@ - 默认 VPC NAT 策略规则 - Kube-OVN 文档

默认 VPC NAT 策略规则

用途

默认 VPC 下的 Overlay 子网，打开 natOutgoing 开关时，Subnet 下的所有 Pod 访问外网都需要做 SNAT 成节点的 IP，但是有些场景我们并不希望子网内所有 Pod 访问外网都做 SNAT。

因此 NAT 策略就是为了提供一个接口让用户决定子网内的哪些 CIDR 或者 IP 访问外网做 SNAT。

使用方法

在 subnet.Spec 中开启 natOutgoing 开关， 并且添加字段 natOutgoingPolicyRules 如下：

spec:
+       
默认 VPC NAT 策略规则
 
用途
 
默认 VPC 下的 Overlay 子网，打开 natOutgoing 开关时，Subnet 下的所有 Pod 访问外网都需要做 SNAT 成节点的 IP，但是有些场景我们并不希望子网内所有 Pod 访问外网都做 SNAT。
 
因此 NAT 策略就是为了提供一个接口让用户决定子网内的哪些 CIDR 或者 IP 访问外网做 SNAT。
 
使用方法
 
在 subnet.Spec 中开启 natOutgoing 开关， 并且添加字段 natOutgoingPolicyRules 如下：
 
spec:
   natOutgoing: true
   natOutgoingPolicyRules:
     - action: forward
@@ -16,7 +16,7 @@
       match:
         srcIPs: 10.0.11.128/26
         dstIPs: 114.114.114.114,8.8.8.8
-
 
以上案例表示有两条 NAT 策略规则：
 
     
  1. 源 IP 是 10.0.11.0/30 或者 10.0.11.254 的报文访问外网时不会做 SNAT。
    2.  
  2. 源 IP 是 10.0.11.128/26 并且目的 IP 是 114.114.114.114 或者 8.8.8.8 的报文访问外网时会做 SNAT。
    3.  
 
字段描述：
 
action：满足 match 对应条件的报文，会执行的 action, action 分为两种 forward 和 nat ，forward 表示报文出外网不做 SNAT, nat 表示报文出外网做 SNAT。 没有配置 natOutgoingPolicyRules 时，默认情况报文仍然是做 SNAT。
 
match：表示报文的匹配段，匹配段有 srcIPs 和 dstIPs， 这里表示从子网内到外网方向上的报文的源 IP 和 目的 IP。match.srcIPs 和 match.dstIPs 支持多个 CIDR 和 IP，之间用逗号间隔。
 
如果出现多个 match 规则重叠，则按照 natOutgoingPolicyRules 数组顺序进行匹配，最先被匹配的 action 会被执行。
 
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\ No newline at end of file diff --git a/v1.13.x/advance/node-local-dns/index.html b/v1.13.x/advance/node-local-dns/index.html index b5bf12b6b..97d59dfe5 100644 --- a/v1.13.x/advance/node-local-dns/index.html +++ b/v1.13.x/advance/node-local-dns/index.html @@ -1,4 +1,4 @@ - 节点本地 DNS 缓存和 Kube-OVN 适配 - Kube-OVN 文档

节点本地 DNS 缓存和 Kube-OVN 适配

NodeLocal DNSCache 是通过集群节点上作为 DaemonSet 运行 DNS 缓存来提高集群 DNS 性能，该功能也可以和 Kube-OVN 适配。

节点本地 DNS 缓存部署

部署 Kubernetes 的节点本地 DNS 缓存

该步骤参考 Kubernetes 官网配置 Nodelocaldnscache。

使用以下脚本部署：

#!bin/bash
+       
节点本地 DNS 缓存和 Kube-OVN 适配
 
NodeLocal DNSCache 是通过集群节点上作为 DaemonSet 运行 DNS 缓存来提高集群 DNS 性能，该功能也可以和 Kube-OVN 适配。
 
节点本地 DNS 缓存部署
 
部署 Kubernetes 的节点本地 DNS 缓存
 
该步骤参考 Kubernetes 官网配置 Nodelocaldnscache。
 
使用以下脚本部署：
 
#!bin/bash
 
 localdns=169.254.20.10
 domain=cluster.local
@@ -34,7 +34,7 @@
 06:20:00.442219 659246098c56_h Out ifindex 17 00:00:00:ea:b3:5e ethertype IPv4 (0x0800), length 145: 169.254.20.10.53 > 10.16.0.2.40230: 1611* 0/1/0 (97)
 06:20:00.442273 ovn0  Out ifindex 7 00:00:00:52:99:d8 ethertype IPv4 (0x0800), length 125: 169.254.20.10.53 > 10.16.0.2.40230: 1291* 2/0/0 A 39.156.66.10, A 110.242.68.66 (77)
 06:20:00.442278 659246098c56_h Out ifindex 17 00:00:00:ea:b3:5e ethertype IPv4 (0x0800), length 125: 169.254.20.10.53 > 10.16.0.2.40230: 1291* 2/0/0 A 39.156.66.10, A 110.242.68.66 (77)
-
 
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\ No newline at end of file diff --git a/v1.13.x/advance/offload-corigine/index.html b/v1.13.x/advance/offload-corigine/index.html index 251468f75..fc8e08c7a 100644 --- a/v1.13.x/advance/offload-corigine/index.html +++ b/v1.13.x/advance/offload-corigine/index.html @@ -1,4 +1,4 @@ - 芯启源网卡 Offload 支持 - Kube-OVN 文档

芯启源网卡 Offload 支持

Kube-OVN 在最终的数据平面使用 OVS 来完成流量转发，相关的流表匹配，隧道封装等功能为 CPU 密集型，在大流量下会消耗大量 CPU 资源并导致 延迟上升和吞吐量下降。芯启源的 Agilio CX 系列智能网卡可以将 OVS 相关的操作卸载到硬件网卡中执行。 该技术可以在无需对 OVS 控制平面进行修改的情况下，缩短数据路径，避免对主机 CPU 资源的使用，大幅降低延迟并显著提升吞吐量。

前置条件

  • 芯启源 Agilio CX 系列的硬件网卡。
  • CentOS 8 Stream 或上游 Linux 5.7 以上内核支持。
  • 由于当前网卡不支持 dp_hash 和 hash 操作卸载，需关闭 OVN LB 功能。

设置网卡 SR-IOV 模式

用户可参考 Agilio Open vSwitch TC User Guide 获得该网卡使用的更多详细信息。

保存下列脚本用于后续执行固件相关操作：

#!/bin/bash
+       
芯启源网卡 Offload 支持
 
Kube-OVN 在最终的数据平面使用 OVS 来完成流量转发，相关的流表匹配，隧道封装等功能为 CPU 密集型，在大流量下会消耗大量 CPU 资源并导致 延迟上升和吞吐量下降。芯启源的 Agilio CX 系列智能网卡可以将 OVS 相关的操作卸载到硬件网卡中执行。 该技术可以在无需对 OVS 控制平面进行修改的情况下，缩短数据路径，避免对主机 CPU 资源的使用，大幅降低延迟并显著提升吞吐量。
 
 
前置条件
 
     
  • 芯启源 Agilio CX 系列的硬件网卡。
    •  
  • CentOS 8 Stream 或上游 Linux 5.7 以上内核支持。
    •  
  • 由于当前网卡不支持 dp_hash 和 hash 操作卸载，需关闭 OVN LB 功能。
    •  
 
设置网卡 SR-IOV 模式
 
用户可参考 Agilio Open vSwitch TC User Guide 获得该网卡使用的更多详细信息。
 
保存下列脚本用于后续执行固件相关操作：
 
#!/bin/bash
 DEVICE=${1}
 DEFAULT_ASSY=scan
 ASSY=${2:-${DEFAULT_ASSY}}
@@ -131,7 +131,7 @@
 
 
     
  • v1.multus-cni.io/default-network: 为上一步骤中 NetworkAttachmentDefinition 的 {namespace}/{name}。
    •  
 
可通过在 Pod 运行节点的 ovs-ovn 容器中运行下面的命令观察卸载是否成功：
 
# ovs-appctl dpctl/dump-flows -m type=offloaded
 ufid:91cc45de-e7e9-4935-8f82-1890430b0f66, skb_priority(0/0),skb_mark(0/0),ct_state(0/0x23),ct_zone(0/0),ct_mark(0/0),ct_label(0/0x1),recirc_id(0),dp_hash(0/0),in_port(5b45c61b307e_h),packet_type(ns=0/0,id=0/0),eth(src=00:00:00:c5:6d:4e,dst=00:00:00:e7:16:ce),eth_type(0x0800),ipv4(src=0.0.0.0/0.0.0.0,dst=0.0.0.0/0.0.0.0,proto=0/0,tos=0/0,ttl=0/0,frag=no), packets:941539, bytes:62142230, used:0.260s, offloaded:yes, dp:tc, actions:54235e5753b8_h
 ufid:e00768d7-e652-4d79-8182-3291d852b791, skb_priority(0/0),skb_mark(0/0),ct_state(0/0x23),ct_zone(0/0),ct_mark(0/0),ct_label(0/0x1),recirc_id(0),dp_hash(0/0),in_port(54235e5753b8_h),packet_type(ns=0/0,id=0/0),eth(src=00:00:00:e7:16:ce,dst=00:00:00:c5:6d:4e),eth_type(0x0800),ipv4(src=0.0.0.0/0.0.0.0,dst=0.0.0.0/0.0.0.0,proto=0/0,tos=0/0,ttl=0/0,frag=no), packets:82386659, bytes:115944854173, used:0.260s, offloaded:yes, dp:tc, actions:5b45c61b307e_h
-
 
如果有 offloaded:yes, dp:tc 内容证明卸载成功。
 
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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/offload-mellanox/index.html b/v1.13.x/advance/offload-mellanox/index.html index 342f541da..3b5e5fb5a 100644 --- a/v1.13.x/advance/offload-mellanox/index.html +++ b/v1.13.x/advance/offload-mellanox/index.html @@ -1,4 +1,4 @@ - Mellanox 网卡 Offload 支持 - Kube-OVN 文档

Mellanox 网卡 Offload 支持

Kube-OVN 在最终的数据平面使用 OVS 来完成流量转发，相关的流表匹配，隧道封装等功能为 CPU 密集型，在大流量下会消耗大量 CPU 资源并导致 延迟上升和吞吐量下降。Mellanox 的 Accelerated Switching And Packet Processing (ASAP²) 技术可以将 OVS 相关的操作卸载到硬件网卡内的 eSwitch 上执行。该技术可以在无需对 OVS 控制平面进行修改的情况下，缩短数据路径，避免对主机 CPU 资源的使用，大幅降低延迟并显著提升吞吐量。

前置条件

  • Mellanox CX5/CX6/CX7/BlueField 等支持 ASAP² 的硬件网卡。
  • CentOS 8 Stream 或上游 Linux 5.7 以上内核支持。
  • 由于当前网卡不支持 dp_hash 和 hash 操作卸载，需关闭 OVN LB 功能。
  • 为了配置卸载模式，网卡不能绑定 bond。

配置 SR-IOV 和 Device Plugin

Mellanox 网卡支持两种配置 offload 的方式，一种手动配置网卡 SR-IOV 和 Device Plugin，另一种通过 sriov-network-operator 进行自动配置。

手动配置 SR-IOV 和 Device Plugin

配置 SR-IOV

查询网卡的设备 ID，下面的例子中为 84:00.0 和 84.00.1：

# lspci -nn | grep ConnectX-5
+       
Mellanox 网卡 Offload 支持
 
Kube-OVN 在最终的数据平面使用 OVS 来完成流量转发，相关的流表匹配，隧道封装等功能为 CPU 密集型，在大流量下会消耗大量 CPU 资源并导致 延迟上升和吞吐量下降。Mellanox 的 Accelerated Switching And Packet Processing (ASAP²) 技术可以将 OVS 相关的操作卸载到硬件网卡内的 eSwitch 上执行。该技术可以在无需对 OVS 控制平面进行修改的情况下，缩短数据路径，避免对主机 CPU 资源的使用，大幅降低延迟并显著提升吞吐量。
 
 
前置条件
 
     
  • Mellanox CX5/CX6/CX7/BlueField 等支持 ASAP² 的硬件网卡。
    •  
  • CentOS 8 Stream 或上游 Linux 5.7 以上内核支持。
    •  
  • 由于当前网卡不支持 dp_hash 和 hash 操作卸载，需关闭 OVN LB 功能。
    •  
  • 为了配置卸载模式，网卡不能绑定 bond。
    •  
 
配置 SR-IOV 和 Device Plugin
 
Mellanox 网卡支持两种配置 offload 的方式，一种手动配置网卡 SR-IOV 和 Device Plugin，另一种通过 sriov-network-operator 进行自动配置。
 
手动配置 SR-IOV 和 Device Plugin
 
配置 SR-IOV
 
查询网卡的设备 ID，下面的例子中为 84:00.0 和 84.00.1：
 
# lspci -nn | grep ConnectX-5
 84:00.0 Ethernet controller [0200]: Mellanox Technologies MT27800 Family [ConnectX-5] [15b3:1017]
 84:00.1 Ethernet controller [0200]: Mellanox Technologies MT27800 Family [ConnectX-5] [15b3:1017]
 
 
根据设备 ID 找到对应网卡：
 
# ls -l /sys/class/net/ | grep 84:00.0
@@ -373,7 +373,7 @@
 
 
上述示例会创建一个不使用 VF 进行网络卸载加速的 Pod，其流表仍会被下发至 ovs-kernel 中而不会下发到 e-switch 中。
 
卸载验证
 
可通过在 Pod 运行节点的 ovs-ovn 容器中运行下面的命令观察卸载是否成功：
 
# ovs-appctl dpctl/dump-flows -m type=offloaded
 ufid:91cc45de-e7e9-4935-8f82-1890430b0f66, skb_priority(0/0),skb_mark(0/0),ct_state(0/0x23),ct_zone(0/0),ct_mark(0/0),ct_label(0/0x1),recirc_id(0),dp_hash(0/0),in_port(5b45c61b307e_h),packet_type(ns=0/0,id=0/0),eth(src=00:00:00:c5:6d:4e,dst=00:00:00:e7:16:ce),eth_type(0x0800),ipv4(src=0.0.0.0/0.0.0.0,dst=0.0.0.0/0.0.0.0,proto=0/0,tos=0/0,ttl=0/0,frag=no), packets:941539, bytes:62142230, used:0.260s, offloaded:yes, dp:tc, actions:54235e5753b8_h
 ufid:e00768d7-e652-4d79-8182-3291d852b791, skb_priority(0/0),skb_mark(0/0),ct_state(0/0x23),ct_zone(0/0),ct_mark(0/0),ct_label(0/0x1),recirc_id(0),dp_hash(0/0),in_port(54235e5753b8_h),packet_type(ns=0/0,id=0/0),eth(src=00:00:00:e7:16:ce,dst=00:00:00:c5:6d:4e),eth_type(0x0800),ipv4(src=0.0.0.0/0.0.0.0,dst=0.0.0.0/0.0.0.0,proto=0/0,tos=0/0,ttl=0/0,frag=no), packets:82386659, bytes:115944854173, used:0.260s, offloaded:yes, dp:tc, actions:5b45c61b307e_h
-
 
如果有 offloaded:yes, dp:tc 内容证明卸载成功。
 
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评论
\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/offload-yunsilicon/index.html b/v1.13.x/advance/offload-yunsilicon/index.html index 70dfbbf82..40fd029da 100644 --- a/v1.13.x/advance/offload-yunsilicon/index.html +++ b/v1.13.x/advance/offload-yunsilicon/index.html @@ -1,4 +1,4 @@ - 云脉芯联网卡 Offload 支持 - Kube-OVN 文档

云脉芯联网卡 Offload 支持

Kube-OVN 在最终的数据平面使用 OVS 来完成流量转发，相关的流表匹配，隧道封装等功能为 CPU 密集型，在大流量下会消耗大量 CPU 资源并导致 延迟上升和吞吐量下降。云脉芯联的 metaScale 系列智能网卡可以将 OVS 相关的操作卸载到硬件网卡上执行。该技术可以在无需对 OVS 控制平面进行修改的情况下，缩短数据路径，避免对主机 CPU 资源的使用，大幅降低延迟并显著提升吞吐量。

目前云脉芯联只适配了 1.11 系列版本的 Kube-OVN，部分最新功能无法使用。

前置条件

  • 云脉芯联 metaScale 系列智能网卡。
  • MCR 驱动安装包。
  • BIOS 开启 SR-IOV 和 VT-d。

安装指南

启用 hw-offload 模式安装 Kube-OVN

  1. 下载 安装脚本
wget https://github.com/yunsilicon/kube-ovn/blob/release-1.11/dist/images/install.sh
+       
云脉芯联网卡 Offload 支持
 
Kube-OVN 在最终的数据平面使用 OVS 来完成流量转发，相关的流表匹配，隧道封装等功能为 CPU 密集型，在大流量下会消耗大量 CPU 资源并导致 延迟上升和吞吐量下降。云脉芯联的 metaScale 系列智能网卡可以将 OVS 相关的操作卸载到硬件网卡上执行。该技术可以在无需对 OVS 控制平面进行修改的情况下，缩短数据路径，避免对主机 CPU 资源的使用，大幅降低延迟并显著提升吞吐量。
 
 
目前云脉芯联只适配了 1.11 系列版本的 Kube-OVN，部分最新功能无法使用。
 
 
前置条件
 
     
  • 云脉芯联 metaScale 系列智能网卡。
    •  
  • MCR 驱动安装包。
    •  
  • BIOS 开启 SR-IOV 和 VT-d。
    •  
 
安装指南
 
启用 hw-offload 模式安装 Kube-OVN
 
     
  1. 下载 安装脚本
    2.  
 
wget https://github.com/yunsilicon/kube-ovn/blob/release-1.11/dist/images/install.sh
 
 
     
  1. 配置节点
    2.  
 
修改每个节点的 /opt/ovs-config/ovs-dpdk-config 文件：
 
# specify log level for ovs dpdk, the value is info or dbg, default is info
 VLOG=info
 # specify nic offload, the value is true or false, default is true
@@ -116,7 +116,7 @@
 recirc_id(0),in_port(15),packet_type(ns=0,id=0),eth(src=00:00:00:9d:fb:1a/01:00:00:00:00:00,dst=00:00:00:ce:cf:b9),eth_type(0x0800),ipv4(dst=10.16.0.14/255.192.0.0,frag=no), packets:6, bytes:588, used:7.277s, actions:ct(zone=6,nat),recirc(0x2d277)
 recirc_id(0),in_port(8),packet_type(ns=0,id=0),eth(src=00:00:00:ce:cf:b9/01:00:00:00:00:00,dst=00:00:00:9d:fb:1a),eth_type(0x0800),ipv4(dst=10.16.0.18/255.192.0.0,frag=no), packets:6, bytes:588, used:7.434s, actions:ct(zone=4,nat),recirc(0x2d275)
 ct_state(-new+est-rel+rpl+trk),ct_mark(0/0x1),recirc_id(0x2d278),in_port(15),packet_type(ns=0,id=0),eth(dst=00:00:00:ce:cf:b9/01:00:00:00:00:00),eth_type(0x0800),ipv4(frag=no), packets:6, bytes:588, used:7.277s, actions:8
-
 
如果有流表内容证明卸载成功。
 
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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/offload-yusur/index.html b/v1.13.x/advance/offload-yusur/index.html index 80364d865..d0013b69e 100644 --- a/v1.13.x/advance/offload-yusur/index.html +++ b/v1.13.x/advance/offload-yusur/index.html @@ -1,4 +1,4 @@ - 中科驭数网卡 Offload 支持 - Kube-OVN 文档

中科驭数网卡 Offload 支持

前置条件

  • 中科驭数 2200E 系列智能网卡
  • 中科驭数 HADOS 敏捷异构软件开发平台
  • BIOS 开启 SR-IOV

安装流程

配置 SR-IOV

  1. 根据中科驭数 2200E 网卡的 vendor ID（1f47），找到本网卡在主机上的设备 ID，以下为（00:0a.0）和（00:0b.0），分别对应 2200E 上的两个光口，可以根据和光纤连接情况选用。
lspci | grep 1f47
+       
中科驭数网卡 Offload 支持
 
前置条件
 
     
  • 中科驭数 2200E 系列智能网卡
    •  
  • 中科驭数 HADOS 敏捷异构软件开发平台
    •  
  • BIOS 开启 SR-IOV
    •  
 
安装流程
 
配置 SR-IOV
 
     
  1. 根据中科驭数 2200E 网卡的 vendor ID（1f47），找到本网卡在主机上的设备 ID，以下为（00:0a.0）和（00:0b.0），分别对应 2200E 上的两个光口，可以根据和光纤连接情况选用。
    2.  
 
lspci | grep 1f47
 00:0a.0 Ethernet controller: Device 1f47:1001 (rev 10)
 00:0b.0 Ethernet controller: Device 1f47:1001 (rev 10)
 
 
     
  1. 查看每一个总线对应的设备最大可分配的 VF 数量：
    2.  
 
cat /sys/bus/pci/devices/0000\:00\:0a.0/sriov_totalvfs
@@ -97,7 +97,7 @@
 
 
     
  • v1.multus-cni.io/default-network: 为上一步骤中 NetworkAttachmentDefinition 的 {namespace}/{name}。
    •  
 
Offload 验证
 
可通过在 Pod 运行节点的 ovs-ovn 容器中运行下面的命令观察卸载是否成功：
 
# ovs-appctl dpctl/dump-flows -m type=offloaded
 ufid:67c2e10f-92d4-4574-be70-d072815ff166, skb_priority(0/0),skb_mark(0/0),ct_state(0/0x23),ct_zone(0/0),ct_mark(0/0),ct_label(0/0),recirc_id(0),dp_hash(0/0),in_port(d85b161b6840_h),packet_type(ns=0/0,id=0/0),eth(src=0a:c9:1c:70:01:09,dst=8a:18:a4:22:b7:7d),eth_type(0x0800),ipv4(src=10.0.1.10,dst=10.0.1.6,proto=6,tos=0/0x3,ttl=0/0,frag=no),tcp(src=60774,dst=9001), packets:75021, bytes:109521630, offload_packets:75019, offload_bytes:109521498, used:3.990s,offloaded:yes,dp:tc, actions:set(tunnel(tun_id=0x5,dst=192.168.201.12,ttl=64,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0xa0006}),flags(csum|key))),genev_sys_6081
 ufid:7940666e-a0bd-42a5-8116-1e84e81bb338, skb_priority(0/0),tunnel(tun_id=0x5,src=192.168.201.12,dst=192.168.201.11,ttl=0/0,tp_dst=6081,geneve({class=0x102,type=0x80,len=4,0x6000a}),flags(+key)),skb_mark(0/0),ct_state(0/0),ct_zone(0/0),ct_mark(0/0),ct_label(0/0),recirc_id(0),dp_hash(0/0),in_port(genev_sys_6081),packet_type(ns=0/0,id=0/0),eth(src=8a:18:a4:22:b7:7d,dst=0a:c9:1c:70:01:09),eth_type(0x0800),ipv4(src=10.0.1.6,dst=10.0.1.10,proto=6,tos=0/0,ttl=0/0,frag=no),tcp(src=9001,dst=60774), packets:6946, bytes:459664, offload_packets:6944, offload_bytes:459532, used:4.170s, dp:tc,offloaded:yes,actions:d85b161b6840_h
-
 
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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/overlay-with-route/index.html b/v1.13.x/advance/overlay-with-route/index.html index 17212618b..9b141213f 100644 --- a/v1.13.x/advance/overlay-with-route/index.html +++ b/v1.13.x/advance/overlay-with-route/index.html @@ -1,4 +1,4 @@ - Overlay 下路由方式网络打通 - Kube-OVN 文档

Overlay 下路由方式网络打通

在一些场景下，网络环境不支持 Underlay 模式，但是依然需要 Pod 能和外部设施直接通过 IP 进行互访， 这时候可以使用路由方式将容器网络和外部联通。

路由模式只支持默认 VPC 下的 Overlay 网络和外部打通，在这种情况下，Pod IP 会直接进入底层网络，底层网络需要放开关于源地址和目地址的 IP 检查。

前提条件

  • 此模式下，主机需要开放 ip_forward。
  • 检查主机 iptables 规则中是否在 forward 链中是否有 Drop 规则，需要放行容器相关流量。
  • 由于可能存在非对称路由的情况，主机需放行 ct 状态为 INVALID 的数据包。

设置步骤

对于需要对外直接路由的子网，需要将子网的 natOutgoing 设置为 false，关闭 nat 映射，使得 Pod IP 可以直接进入外部网络。

apiVersion: kubeovn.io/v1
+       
Overlay 下路由方式网络打通
 
在一些场景下，网络环境不支持 Underlay 模式，但是依然需要 Pod 能和外部设施直接通过 IP 进行互访， 这时候可以使用路由方式将容器网络和外部联通。
 
 
路由模式只支持默认 VPC 下的 Overlay 网络和外部打通，在这种情况下，Pod IP 会直接进入底层网络，底层网络需要放开关于源地址和目地址的 IP 检查。
 
 
前提条件
 
     
  • 此模式下，主机需要开放 ip_forward。
    •  
  • 检查主机 iptables 规则中是否在 forward 链中是否有 Drop 规则，需要放行容器相关流量。
    •  
  • 由于可能存在非对称路由的情况，主机需放行 ct 状态为 INVALID 的数据包。
    •  
 
设置步骤
 
对于需要对外直接路由的子网，需要将子网的 natOutgoing 设置为 false，关闭 nat 映射，使得 Pod IP 可以直接进入外部网络。
 
apiVersion: kubeovn.io/v1
 kind: Subnet
 metadata:
   name: routed
@@ -34,7 +34,7 @@
   gatewayType: centralized
   gatewayNode: "node1"
   natOutgoing: false
-
 
如果对于部分流量（如访问外网的流量）仍然希望进行 nat 处理，请参考默认 VPC NAT 策略规则。
 
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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/ovn-eip-fip-snat/index.html b/v1.13.x/advance/ovn-eip-fip-snat/index.html index 7d4cf7946..c4b8c5b7a 100644 --- a/v1.13.x/advance/ovn-eip-fip-snat/index.html +++ b/v1.13.x/advance/ovn-eip-fip-snat/index.html @@ -1,4 +1,4 @@ - OVN EIP FIP SNAT 支持 - Kube-OVN 文档

OVN EIP FIP SNAT DNAT 支持


+       
OVN EIP FIP SNAT DNAT 支持
 

 graph LR
 
 pod-->subnet-->vpc-->lrp--bind-->gw-chassis-->snat-->lsp-->external-subnet
@@ -575,7 +575,7 @@
 # kubectl get odnat eip-dnat 
 NAME       EIP        PROTOCOL   V4EIP       V4IP          INTERNALPORT   EXTERNALPORT   IPNAME          READY
 eip-dnat   eip-dnat   tcp        10.5.49.4   192.168.0.4   22             22             test-dnat-vip   true
-

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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/ovn-ipsec/index.html b/v1.13.x/advance/ovn-ipsec/index.html index 41c5e915f..3c6d1bdf4 100644 --- a/v1.13.x/advance/ovn-ipsec/index.html +++ b/v1.13.x/advance/ovn-ipsec/index.html @@ -1,4 +1,4 @@ - OVN IPsec 支持 - Kube-OVN 文档

使用 IPsec 加密节点间通信

该功能从 v1.13.0 后支持，同时需要保证主机 UDP 500 和 4500 端口可用。

加密流程

kube-ovn-cni 负责将证书申请，会创建一个 certificatesigningrequest 给 kube-ovn-controller，kube-ovn-controller 会自动 approve 证书申请，然后 kube-ovn-cni 会根据证书生成 ipsec 配置文件，最后启动 ipsec 进程。

配置 IPsec

将 kube-ovn-controller 和 kube-ovn-cni 中的 args --enable-ovn-ipsec=false 修改为 --enable-ovn-ipsec=true。

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使用 IPsec 加密节点间通信

该功能从 v1.13.0 后支持，同时需要保证主机 UDP 500 和 4500 端口可用。

加密流程

kube-ovn-cni 负责将证书申请，会创建一个 certificatesigningrequest 给 kube-ovn-controller，kube-ovn-controller 会自动 approve 证书申请，然后 kube-ovn-cni 会根据证书生成 ipsec 配置文件，最后启动 ipsec 进程。

配置 IPsec

将 kube-ovn-controller 和 kube-ovn-cni 中的 args --enable-ovn-ipsec=false 修改为 --enable-ovn-ipsec=true。

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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/ovn-l3-ha-based-ecmp-with-bfd/index.html b/v1.13.x/advance/ovn-l3-ha-based-ecmp-with-bfd/index.html index 7fc2206ae..091c1cb3c 100644 --- a/v1.13.x/advance/ovn-l3-ha-based-ecmp-with-bfd/index.html +++ b/v1.13.x/advance/ovn-l3-ha-based-ecmp-with-bfd/index.html @@ -1,4 +1,4 @@ - OVN SNAT 基于 ECMP BFD 静态路由的 L3 HA 支持 - Kube-OVN 文档

OVN SNAT 基于 ECMP BFD 静态路由的 L3 HA 支持

自定义 vpc 基于 ovn snat 后基于 ecmp 静态路由哈希到多个 gw node ovnext0 网卡出公网

  • 支持基于 bfd 的高可用
  • 仅支持 hash 负载均衡
graph LR
+       
OVN SNAT 基于 ECMP BFD 静态路由的 L3 HA 支持
 
自定义 vpc 基于 ovn snat 后基于 ecmp 静态路由哈希到多个 gw node ovnext0 网卡出公网
 
     
  • 支持基于 bfd 的高可用
    •  
  • 仅支持 hash 负载均衡
    •  
 
graph LR
 
 pod-->vpc-subnet-->vpc-->snat-->ecmp-->external-subnet-->gw-node1-ovnext0--> node1-external-switch
 external-subnet-->gw-node2-ovnext0--> node2-external-switch
@@ -258,7 +258,7 @@
 # 而且 ovnext ns 中的对端 bfd 会话也自动移除
 # 该切换过程保持 vpc subnet 内保持 ping 未看到(秒级)丢包
 # 再切换回去 也未看到(秒级)丢包
-

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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/ovn-remote-port-mirroring/index.html b/v1.13.x/advance/ovn-remote-port-mirroring/index.html index ffecf8998..5a746c95e 100644 --- a/v1.13.x/advance/ovn-remote-port-mirroring/index.html +++ b/v1.13.x/advance/ovn-remote-port-mirroring/index.html @@ -1,4 +1,4 @@ - OVN 流量镜像 - Kube-OVN 文档

OVN 流量镜像

此功能可以将指定 Pod、指定方向的流量，通过 GRE/ERSPAN 封装后，传输到远端。

此功能要求 Kube-OVN 版本不低于 v1.12。

部署 Multus-CNI

参考 Multus-CNI 文档 部署 Multus。

创建附属网络

使用以下内容创建附属网络：

apiVersion: "k8s.cni.cncf.io/v1"
+       
OVN 流量镜像
 
此功能可以将指定 Pod、指定方向的流量，通过 GRE/ERSPAN 封装后，传输到远端。
 
 
此功能要求 Kube-OVN 版本不低于 v1.12。
 
 
部署 Multus-CNI
 
参考 Multus-CNI 文档 部署 Multus。
 
创建附属网络
 
使用以下内容创建附属网络：
 
apiVersion: "k8s.cni.cncf.io/v1"
 kind: NetworkAttachmentDefinition
 metadata:
   name: attachnet
@@ -103,7 +103,7 @@
     10.16.0.4.53 > 10.16.0.6.45214: 61875 NXDomain*- 0/1/1 (159)
 05:13:30.566023 00:00:00:a3:f5:e2 > 00:00:00:55:e4:4e, ethertype IPv4 (0x0800), length 80: (tos 0x0, ttl 64, id 45937, offset 0, flags [DF], proto UDP (17), length 66)
     10.16.0.4.44116 > 172.18.0.1.53: 16025+ [1au] AAAA? kube-ovn.io. (38)
-
 
注意事项
 
     
  1. 如果使用 ERSPAN 作为封装协议，OVN 节点及远端设备的 Linux 内核版本不得低于 4.14。若使用 ERSPAN 作为封装协议且使用 IPv6 作为传输网络，Linux 内核版本不得低于 4.16。
    2.  
  2. 镜像流量的传输是单向的，只需保证 OVN 节点能够访问远端设备即可。
    3.  
 
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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/performance-tuning/index.html b/v1.13.x/advance/performance-tuning/index.html index 6d5099ff6..7ff775e53 100644 --- a/v1.13.x/advance/performance-tuning/index.html +++ b/v1.13.x/advance/performance-tuning/index.html @@ -1,4 +1,4 @@ - 性能调优 - Kube-OVN 文档

性能调优

为了保持安装的简单和功能的完备，Kube-OVN 的默认安装脚本并没有对性能针对性的优化。如果应用对延迟和吞吐量敏感， 管理员可以通过本文档对性能进行针对性优化。

社区会不断迭代控制面板和优化面的性能，部分通用性能优化已经集成到最新版本，建议使用最新版本获得更好的默认性能。

更多关于性能优化的过程和方法论，可以观看视频分享：Kube-OVN 容器性能优化之旅。

基准测试

由于软硬件环境的差异极大，这里提供的性能测试数据只能作为参考，实际测试结果会和本文档中的结果存在较大差异。 建议比较优化前后的性能测试结果，和宿主机网络和容器网络的性能比较。

Overlay 优化前后性能对比

环境信息：

  • Kubernetes: 1.22.0
  • OS: CentOS 7
  • Kube-OVN: 1.8.0 Overlay 模式
  • CPU: Intel(R) Xeon(R) E-2278G
  • Network: 2*10Gbps, xmit_hash_policy=layer3+4

我们使用 qperf -t 60 <server ip> -ub -oo msg_size:1 -vu tcp_lat tcp_bw udp_lat udp_bw 测试 1 字节小包下 tcp/udp 的带宽和延迟，分别测试优化前，优化后以及宿主机网络的性能：

Type tcp_lat (us) udp_lat (us) tcp_bw (Mb/s) udp_bw(Mb/s)
Kube-OVN Default 25.7 22.9 27.1 1.59
Kube-OVN Optimized 13.9 12.9 27.6 5.57
HOST Network 13.1 12.4 28.2 6.02

Overlay， Underlay 以及 Calico 不同模式性能对比

下面我们会比较优化后 Kube-OVN 在不同包大小下的 Overlay 和 Underlay 性能，并和 Calico 的 IPIP Always, IPIP never 以及宿主机网络做比较。

Environment:

  • Kubernetes: 1.22.0
  • OS: CentOS 7
  • Kube-OVN: 1.8.0
  • CPU: AMD EPYC 7402P 24-Core Processor
  • Network: Intel Corporation Ethernet Controller XXV710 for 25GbE SFP28

qperf -t 60 <server ip> -ub -oo msg_size:1 -vu tcp_lat tcp_bw udp_lat udp_bw

Type tcp_lat (us) udp_lat (us) tcp_bw (Mb/s) udp_bw(Mb/s)
Kube-OVN Overlay 15.2 14.6 23.6 2.65
Kube-OVN Underlay 14.3 13.8 24.2 3.46
Calico IPIP 21.4 20.2 23.6 1.18
Calico NoEncap 19.3 16.9 23.6 1.76
HOST Network 16.6 15.4 24.8 2.64

qperf -t 60 <server ip> -ub -oo msg_size:1K -vu tcp_lat tcp_bw udp_lat udp_bw

Type tcp_lat (us) udp_lat (us) tcp_bw (Gb/s) udp_bw(Gb/s)
Kube-OVN Overlay 16.5 15.8 10.2 2.77
Kube-OVN Underlay 15.9 14.5 9.6 3.22
Calico IPIP 22.5 21.5 1.45 1.14
Calico NoEncap 19.4 18.3 3.76 1.63
HOST Network 18.1 16.6 9.32 2.66

qperf -t 60 <server ip> -ub -oo msg_size:4K -vu tcp_lat tcp_bw udp_lat udp_bw

Type tcp_lat (us) udp_lat (us) tcp_bw (Gb/s) udp_bw(Gb/s)
Kube-OVN Overlay 34.7 41.6 16.0 9.23
Kube-OVN Underlay 32.6 44 15.1 6.71
Calico IPIP 44.8 52.9 2.94 3.26
Calico NoEncap 40 49.6 6.56 4.19
HOST Network 35.9 45.9 14.6 5.59

在部分情况下容器网络的性能会优于宿主机网络，这是优于经过优化后容器网络路径完全绕过了 netfilter， 而宿主机网络由于 kube-proxy 的存在所有数据包均需经过 netfilter，会导致在一些环境下容器网络 的消耗相对更小，因此会有更好的性能表现。

数据平面性能优化方法

这里介绍的优化方法和软硬件环境以及所需要的功能相关，请仔细了解优化的前提条件再进行尝试。

CPU 性能模式调整

部分环境下 CPU 运行在节能模式，该模式下性能表现将会不稳定，延迟会出现明显增加，建议使用 CPU 的性能模式获得更稳定的性能表现：

cpupower frequency-set -g performance
+       
性能调优
 
为了保持安装的简单和功能的完备，Kube-OVN 的默认安装脚本并没有对性能针对性的优化。如果应用对延迟和吞吐量敏感， 管理员可以通过本文档对性能进行针对性优化。
 
社区会不断迭代控制面板和优化面的性能，部分通用性能优化已经集成到最新版本，建议使用最新版本获得更好的默认性能。
 
更多关于性能优化的过程和方法论，可以观看视频分享：Kube-OVN 容器性能优化之旅。
 
基准测试
 
 
由于软硬件环境的差异极大，这里提供的性能测试数据只能作为参考，实际测试结果会和本文档中的结果存在较大差异。 建议比较优化前后的性能测试结果，和宿主机网络和容器网络的性能比较。
 
 
Overlay 优化前后性能对比
 
环境信息：
 
     
  • Kubernetes: 1.22.0
    •  
  • OS: CentOS 7
    •  
  • Kube-OVN: 1.8.0 Overlay 模式
    •  
  • CPU: Intel(R) Xeon(R) E-2278G
    •  
  • Network: 2*10Gbps, xmit_hash_policy=layer3+4
    •  
 
我们使用 qperf -t 60 <server ip> -ub -oo msg_size:1 -vu tcp_lat tcp_bw udp_lat udp_bw 测试 1 字节小包下 tcp/udp 的带宽和延迟，分别测试优化前，优化后以及宿主机网络的性能：
 
  
 Type tcp_lat (us) udp_lat (us) tcp_bw (Mb/s) udp_bw(Mb/s) 
   
 Kube-OVN Default 25.7 22.9 27.1 1.59 
 
 Kube-OVN Optimized 13.9 12.9 27.6 5.57 
 
 HOST Network 13.1 12.4 28.2 6.02 
  
 
Overlay， Underlay 以及 Calico 不同模式性能对比
 
下面我们会比较优化后 Kube-OVN 在不同包大小下的 Overlay 和 Underlay 性能，并和 Calico 的 IPIP Always, IPIP never 以及宿主机网络做比较。
 
Environment:
 
     
  • Kubernetes: 1.22.0
    •  
  • OS: CentOS 7
    •  
  • Kube-OVN: 1.8.0
    •  
  • CPU: AMD EPYC 7402P 24-Core Processor
    •  
  • Network: Intel Corporation Ethernet Controller XXV710 for 25GbE SFP28
    •  
 
qperf -t 60 <server ip> -ub -oo msg_size:1 -vu tcp_lat tcp_bw udp_lat udp_bw
 
  
 Type tcp_lat (us) udp_lat (us) tcp_bw (Mb/s) udp_bw(Mb/s) 
   
 Kube-OVN Overlay 15.2 14.6 23.6 2.65 
 
 Kube-OVN Underlay 14.3 13.8 24.2 3.46 
 
 Calico IPIP 21.4 20.2 23.6 1.18 
 
 Calico NoEncap 19.3 16.9 23.6 1.76 
 
 HOST Network 16.6 15.4 24.8 2.64 
  
 
qperf -t 60 <server ip> -ub -oo msg_size:1K -vu tcp_lat tcp_bw udp_lat udp_bw
 
  
 Type tcp_lat (us) udp_lat (us) tcp_bw (Gb/s) udp_bw(Gb/s) 
   
 Kube-OVN Overlay 16.5 15.8 10.2 2.77 
 
 Kube-OVN Underlay 15.9 14.5 9.6 3.22 
 
 Calico IPIP 22.5 21.5 1.45 1.14 
 
 Calico NoEncap 19.4 18.3 3.76 1.63 
 
 HOST Network 18.1 16.6 9.32 2.66 
  
 
qperf -t 60 <server ip> -ub -oo msg_size:4K -vu tcp_lat tcp_bw udp_lat udp_bw
 
  
 Type tcp_lat (us) udp_lat (us) tcp_bw (Gb/s) udp_bw(Gb/s) 
   
 Kube-OVN Overlay 34.7 41.6 16.0 9.23 
 
 Kube-OVN Underlay 32.6 44 15.1 6.71 
 
 Calico IPIP 44.8 52.9 2.94 3.26 
 
 Calico NoEncap 40 49.6 6.56 4.19 
 
 HOST Network 35.9 45.9 14.6 5.59 
  
 
 
在部分情况下容器网络的性能会优于宿主机网络，这是优于经过优化后容器网络路径完全绕过了 netfilter， 而宿主机网络由于 kube-proxy 的存在所有数据包均需经过 netfilter，会导致在一些环境下容器网络 的消耗相对更小，因此会有更好的性能表现。
 
 
数据平面性能优化方法
 
这里介绍的优化方法和软硬件环境以及所需要的功能相关，请仔细了解优化的前提条件再进行尝试。
 
CPU 性能模式调整
 
部分环境下 CPU 运行在节能模式，该模式下性能表现将会不稳定，延迟会出现明显增加，建议使用 CPU 的性能模式获得更稳定的性能表现：
 
cpupower frequency-set -g performance
 
 
网卡硬件队列调整
 
在流量增大的情况下，缓冲队列过短可能导致较高的丢包率导致性能显著下降，需要进行调整
 
检查当前网卡队列长度：
 
# ethtool -g eno1
  Ring parameters for eno1:
  Pre-set maximums:
@@ -70,7 +70,7 @@
 
 
若之前已经启动过 Kube-OVN，旧版本 OVS 模块已加载至内核，建议重启机器重新加载新版内核模块。
 
使用 STT 类型隧道
 
常见的隧道封装协议例如 Geneve 和 Vxlan 使用 UDP 协议对数据包进行封装，在内核中有良好的支持。但是当使用 UDP 封装 TCP 数据包时， 现代操作系统和网卡针对 TCP 协议的优化和 offload 功能将无法顺利工作，导致 TCP 的吞吐量出现显著下降。在虚拟化场景下由于 CPU 的限制， TCP 大包的吞吐量甚至可能只有宿主机网络的十分之一。
 
STT 提供了一种创新式的使用 TCP 格式数据包进行封装的隧道协议，该封装只是模拟了 TCP 协议的头部格式，并没有真正建立 TCP 连接，但是可以 充分利用现代操作系统和网卡的 TCP 优化能力。在我们的测试中 TCP 大包的吞吐量能有数倍的提升，达到接近宿主机网络的性能水平。
 
STT 隧道并没有预安装在内核内，需要通过编译 OVS 内核模块来安装，OVS 内核模块的编译方法可以参考上一节。
 
STT 隧道开启：
 
kubectl set env daemonset/ovs-ovn -n kube-system TUNNEL_TYPE=stt
 
 kubectl delete pod -n kube-system -lapp=ovs
-
 
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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/security-group/index.html b/v1.13.x/advance/security-group/index.html index cd4f0f598..2042aaf7d 100644 --- a/v1.13.x/advance/security-group/index.html +++ b/v1.13.x/advance/security-group/index.html @@ -1,4 +1,4 @@ - SecurityGroup 使用 - Kube-OVN 文档

SecurityGroup 使用

Kube-OVN 支持了安全组的配置，配置安全组使用的 CRD 为 SecurityGroup。

安全组示例

apiVersion: kubeovn.io/v1
+       
SecurityGroup 使用
 
Kube-OVN 支持了安全组的配置，配置安全组使用的 CRD 为 SecurityGroup。
 
安全组示例
 
apiVersion: kubeovn.io/v1
 kind: SecurityGroup
 metadata:
   name: sg-example
@@ -129,7 +129,7 @@
 NAME                   READY   STATUS              RESTARTS   AGE     IP           NODE                     NOMINATED NODE   READINESS GATES
 sg-test-pod            0/1     ContainerCreating   0          5h41m   <none>       kube-ovn-worker          <none>           <none>
 sg-gw-both             1/1     Running             0          5h37m   10.16.0.19   kube-ovn-worker          <none>           <none>
-
 
因此对于安全组的使用，要特别明确添加的限制规则的作用。如果单纯是限制流量访问，可以考虑使用网络策略实现。
 
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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/vip/index.html b/v1.13.x/advance/vip/index.html index 862a57445..86764a4c7 100644 --- a/v1.13.x/advance/vip/index.html +++ b/v1.13.x/advance/vip/index.html @@ -1,4 +1,4 @@ - VIP 预留设置 - Kube-OVN 文档

VIP 预留 IP

VIP 即虚拟 IP， 用于预留 IP 资源。之所以设计 VIP 是因为 kube-ovn 的 IP 和 POD 在命名上直接关联，所以无法基于 IP 实现直接实现预留 IP 的功能。 VIP 设计之初参考了 Openstack neutron Allowed-Address-Pairs（AAP） 的功能，可以用于 Openstack octavia 负载均衡器项目。 也可以用于提供虚拟机内部的应用（POD）IP，这点可以参考 aliyun terway 项目。 另外，由于 neutron 有预留 IP 的功能，所以对 VIP 进行了一定扩展，使得 VIP 可以直接用于为 POD 预留 IP，但由于这种设计会导致 VIP 和 IP 的功能变得模糊，在实现上并不是一个优雅的方式，所以不推荐在生产使用。 而且， 由于 OVN 的 Switch LB 可以提供一种以子网内部 IP 为 LB 前端 VIP 的功能，所以又对 VIP 在子网内使用 OVN Switch LB Rule 场景进行了扩展。 总之，目前 VIP 在设计上只有三种使用场景：

  • Allowed-Address-Pairs VIP
  • Switch LB rule VIP
  • Pod 使用 VIP 来固定 IP

1. Allowed-Address-Pairs VIP

在该场景下我们希望动态的预留一部分 IP 但是并不分配给 Pod 而是分配给其他的基础设施启用，例如：

  • Kubernetes 嵌套 Kubernetes 的场景中上层 Kubernetes 使用 Underlay 网络会占用底层 Subnet 可用地址。
  • LB 或其他网络基础设施需要使用一个 Subnet 内的 IP，但不会单独起 Pod。

此外，VIP 还可以为 Allowed-Address-Pairs 预留 IP 用来支持单个网卡配置多个 IP 的场景，例如：

  • Keepalived 通过配置额外的 IP 地址对，可以帮助实现快速故障切换和灵活的负载均衡架构

1.1 自动分配地址 VIP

如果只是为了预留若干 IP 而对 IP 地址本身没有要求可以使用下面的 yaml 进行创建：

apiVersion: kubeovn.io/v1
+       
VIP 预留 IP
 
VIP 即虚拟 IP， 用于预留 IP 资源。之所以设计 VIP 是因为 kube-ovn 的 IP 和 POD 在命名上直接关联，所以无法基于 IP 实现直接实现预留 IP 的功能。 VIP 设计之初参考了 Openstack neutron Allowed-Address-Pairs（AAP） 的功能，可以用于 Openstack octavia 负载均衡器项目。 也可以用于提供虚拟机内部的应用（POD）IP，这点可以参考 aliyun terway 项目。 另外，由于 neutron 有预留 IP 的功能，所以对 VIP 进行了一定扩展，使得 VIP 可以直接用于为 POD 预留 IP，但由于这种设计会导致 VIP 和 IP 的功能变得模糊，在实现上并不是一个优雅的方式，所以不推荐在生产使用。 而且， 由于 OVN 的 Switch LB 可以提供一种以子网内部 IP 为 LB 前端 VIP 的功能，所以又对 VIP 在子网内使用 OVN Switch LB Rule 场景进行了扩展。 总之，目前 VIP 在设计上只有三种使用场景：
 
     
  • Allowed-Address-Pairs VIP
    •  
  • Switch LB rule VIP
    •  
  • Pod 使用 VIP 来固定 IP
    •  
 
1. Allowed-Address-Pairs VIP
 
在该场景下我们希望动态的预留一部分 IP 但是并不分配给 Pod 而是分配给其他的基础设施启用，例如：
 
     
  • Kubernetes 嵌套 Kubernetes 的场景中上层 Kubernetes 使用 Underlay 网络会占用底层 Subnet 可用地址。
    •  
  • LB 或其他网络基础设施需要使用一个 Subnet 内的 IP，但不会单独起 Pod。
    •  
 
此外，VIP 还可以为 Allowed-Address-Pairs 预留 IP 用来支持单个网卡配置多个 IP 的场景，例如：
 
     
  • Keepalived 通过配置额外的 IP 地址对，可以帮助实现快速故障切换和灵活的负载均衡架构
    •  
 
1.1 自动分配地址 VIP
 
如果只是为了预留若干 IP 而对 IP 地址本身没有要求可以使用下面的 yaml 进行创建：
 
apiVersion: kubeovn.io/v1
 kind: Vip
 metadata:
   name: vip-dynamic-01
@@ -109,7 +109,7 @@
   containers:
     - name: static-ip
       image: docker.io/library/nginx:alpine
-
 
3.1 StatefulSet 和 Kubevirt VM 保留 VIP
 
针对 StatefulSet 和 VM 的特殊性，在他们的 Pod 销毁再拉起起后会重新使用之前设置的 VIP。
 
VM 保留 VIP 需要确保 kube-ovn-controller 的 keep-vm-ip 参数为 true。请参考 Kubevirt VM 固定地址开启设置
 
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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/vpc-internal-dns/index.html b/v1.13.x/advance/vpc-internal-dns/index.html index 2a4f6784b..7889a8968 100644 --- a/v1.13.x/advance/vpc-internal-dns/index.html +++ b/v1.13.x/advance/vpc-internal-dns/index.html @@ -1,4 +1,4 @@ - 自定义 VPC 内部 DNS - Kube-OVN 文档

自定义 VPC 内部 DNS

由于用户自定义 VPC 和 默认 VPC 网络相互隔离，自定 VPC 内无法访问到部署在默认 VPC 内的 coredns。 如果用户希望在自定义 VPC 内使用 Kubernetes 提供的集群内域名解析能力，可以参考本文档，利用 vpc-dns CRD 来实现。

该 CRD 最终会部署一个 coredns，该 Pod 有两个网卡，一个网卡在用户自定义 VPC，另一个网卡在默认 VPC 从而实现网络互通，同时通过自定义 VPC 内部负载均衡提供自定义 VPC 内的一个内部负载均衡。

部署 vpc-dns 所依赖的资源

apiVersion: rbac.authorization.k8s.io/v1
+       
自定义 VPC 内部 DNS
 
由于用户自定义 VPC 和 默认 VPC 网络相互隔离，自定 VPC 内无法访问到部署在默认 VPC 内的 coredns。 如果用户希望在自定义 VPC 内使用 Kubernetes 提供的集群内域名解析能力，可以参考本文档，利用 vpc-dns CRD 来实现。
 
该 CRD 最终会部署一个 coredns，该 Pod 有两个网卡，一个网卡在用户自定义 VPC，另一个网卡在默认 VPC 从而实现网络互通，同时通过自定义 VPC 内部负载均衡提供自定义 VPC 内的一个内部负载均衡。
 
部署 vpc-dns 所依赖的资源
 
apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRole
 metadata:
   labels:
@@ -122,7 +122,7 @@
 NAME                VIP         PORT(S)                  SERVICE                             AGE
 vpc-dns-test-cjh1   10.96.0.3   53/UDP,53/TCP,9153/TCP   kube-system/slr-vpc-dns-test-cjh1   113s
 
 
进入该 VPC 下的 Pod，测试 dns 解析:
 
nslookup kubernetes.default.svc.cluster.local 10.96.0.3
-
 
该 VPC 下的 switch lb rule 所在的子网以及同一 VPC 下的其他子网下的 pod 都可以解析。
 
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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/vpc-internal-lb/index.html b/v1.13.x/advance/vpc-internal-lb/index.html index ee5d16781..f0df44265 100644 --- a/v1.13.x/advance/vpc-internal-lb/index.html +++ b/v1.13.x/advance/vpc-internal-lb/index.html @@ -1,4 +1,4 @@ - 自定义 VPC 内部负载均衡 - Kube-OVN 文档

自定义 VPC 内部负载均衡

Kubernetes 提供的 Service 可以用作集群内的负载均衡， 但是在自定义 VPC 模式下， 使用 Service 作为内部负载均衡存在如下几个问题：

  1. Service IP 范围为集群资源，所有自定义 VPC 共享，无法重叠。
  2. 用户无法按照自己意愿设置内部负载均衡的 IP 地址。

为了解决上述问题，Kube-OVN 在 1.11 引入 SwitchLBRule CRD，用户可以设置自定义 VPC 内的内部负载均衡规则。

SwitchLBRule 支持以下两种方式设置自定义 VPC 内的内部负载均衡规则。

Selector 自动生成负载均衡规则

通过 selector 可以通过 label 自动关联 pod 配置生成负载均衡规则。

SwitchLBRule 样例如下：

apiVersion: kubeovn.io/v1
+       
自定义 VPC 内部负载均衡
 
Kubernetes 提供的 Service 可以用作集群内的负载均衡， 但是在自定义 VPC 模式下， 使用 Service 作为内部负载均衡存在如下几个问题：
 
     
  1. Service IP 范围为集群资源，所有自定义 VPC 共享，无法重叠。
    2.  
  2. 用户无法按照自己意愿设置内部负载均衡的 IP 地址。
    3.  
 
为了解决上述问题，Kube-OVN 在 1.11 引入 SwitchLBRule CRD，用户可以设置自定义 VPC 内的内部负载均衡规则。
 
SwitchLBRule 支持以下两种方式设置自定义 VPC 内的内部负载均衡规则。
 
Selector 自动生成负载均衡规则
 
通过 selector 可以通过 label 自动关联 pod 配置生成负载均衡规则。
 
SwitchLBRule 样例如下：
 
apiVersion: kubeovn.io/v1
 kind: SwitchLBRule
 metadata:
   name:  cjh-slr-nginx
@@ -170,7 +170,7 @@
 root@server:~# 
 root@server:~# kubectl ko nbctl list Load_Balancer_Health_Check
 root@server:~# 
-
 
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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/vpc-peering/index.html b/v1.13.x/advance/vpc-peering/index.html index c350c23bb..677d20eae 100644 --- a/v1.13.x/advance/vpc-peering/index.html +++ b/v1.13.x/advance/vpc-peering/index.html @@ -1,4 +1,4 @@ - VPC 互联 - Kube-OVN 文档

VPC 互联

VPC 互联提供了一种将两个 VPC 网络通过逻辑路由打通的机制，从而使两个 VPC 内的工作负载可以像在同一个私有网络一样， 通过私有地址相互访问，无需通过外部网关进行 NAT 转发。

前提条件

  1. 该功能只适用于用户自定义 VPC。
  2. 为了避免路由重叠两个 VPC 内的子网 CIDR 不能重叠。
  3. 目前只支持两个 VPC 的互联，更多组 VPC 之间的互联暂不支持。

使用方式

首先创建两个不互联的 VPC，每个 VPC 下各有一个 Subnet，Subnet 的 CIDR 互不重叠。

kind: Vpc
+       
VPC 互联
 
VPC 互联提供了一种将两个 VPC 网络通过逻辑路由打通的机制，从而使两个 VPC 内的工作负载可以像在同一个私有网络一样， 通过私有地址相互访问，无需通过外部网关进行 NAT 转发。
 
前提条件
 
     
  1. 该功能只适用于用户自定义 VPC。
    2.  
  2. 为了避免路由重叠两个 VPC 内的子网 CIDR 不能重叠。
    3.  
  3. 目前只支持两个 VPC 的互联，更多组 VPC 之间的互联暂不支持。
    4.  
 
使用方式
 
首先创建两个不互联的 VPC，每个 VPC 下各有一个 Subnet，Subnet 的 CIDR 互不重叠。
 
kind: Vpc
 apiVersion: kubeovn.io/v1
 metadata:
   name: vpc-1
@@ -97,7 +97,7 @@
 --- 10.0.0.2 ping statistics ---
 3 packets transmitted, 3 packets received, 0% packet loss
 round-trip min/avg/max = 0.088/0.258/0.594 ms
-
 
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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/windows/index.html b/v1.13.x/advance/windows/index.html index b62188159..ab2e655a9 100644 --- a/v1.13.x/advance/windows/index.html +++ b/v1.13.x/advance/windows/index.html @@ -1,4 +1,4 @@ - Windows 支持 - Kube-OVN 文档

Windows 支持

Kube-OVN 支持包含 Windows 系统节点的 Kubernetes 集群网络，可以将 Windows 容器的网络统一接入进行管理。

前提条件

  • 参考 Adding Windows nodes 增加 Windows 节点。
  • Windows 节点必须安装 KB4489899 补丁以使 Overlay/VXLAN 网络正常工作，建议更新系统至最新版本。
  • Windows 节点必须安装 Hyper-V 及管理工具。
  • 由于 Windows 限制隧道封装只能使用 Vxlan 模式。
  • 暂不支持 SSL，IPv6，双栈，QoS 功能。
  • 暂不支持动态子网，动态隧道接口功能，需在安装 Windows 节点前完成子网创建，并固定网络接口。
  • 不支持多个 ProviderNetwork，且无法动态调整桥接接口配置。

安装 OVS

由于上游 OVN 和 OVS 对 Windows 容器支持存在一些问题，需要使用 Kube-OVN 提供的经过修改的安装包进行安装。

使用以下命令打开 Windows 节点的 TESTSIGNING 启动项，执行成功后需要重启系统生效：

bcdedit /set LOADOPTIONS DISABLE_INTEGRITY_CHECKS
+       
Windows 支持
 
Kube-OVN 支持包含 Windows 系统节点的 Kubernetes 集群网络，可以将 Windows 容器的网络统一接入进行管理。
 
前提条件
 
     
  • 参考 Adding Windows nodes 增加 Windows 节点。
    •  
  • Windows 节点必须安装 KB4489899 补丁以使 Overlay/VXLAN 网络正常工作，建议更新系统至最新版本。
    •  
  • Windows 节点必须安装 Hyper-V 及管理工具。
    •  
  • 由于 Windows 限制隧道封装只能使用 Vxlan 模式。
    •  
  • 暂不支持 SSL，IPv6，双栈，QoS 功能。
    •  
  • 暂不支持动态子网，动态隧道接口功能，需在安装 Windows 节点前完成子网创建，并固定网络接口。
    •  
  • 不支持多个 ProviderNetwork，且无法动态调整桥接接口配置。
    •  
 
安装 OVS
 
由于上游 OVN 和 OVS 对 Windows 容器支持存在一些问题，需要使用 Kube-OVN 提供的经过修改的安装包进行安装。
 
使用以下命令打开 Windows 节点的 TESTSIGNING 启动项，执行成功后需要重启系统生效：
 
bcdedit /set LOADOPTIONS DISABLE_INTEGRITY_CHECKS
 bcdedit /set TESTSIGNING ON
 bcdedit /set nointegritychecks ON
 
 
在 Windows 节点下载 Windows 安装包并解压安装。
 
安装完成后确认服务正常运行：
 
PS > Get-Service | findstr ovs
 Running  ovsdb-server  Open vSwitch DB Service
 Running  ovs-vswitchd  Open vSwitch Service
 
 
安装 Kube-OVN
 
在 Windows 节点下载安装脚本 install.ps1。
 
补充相关参数并执行：
 
.\install.ps1 -KubeConfig C:\k\admin.conf -ApiServer https://192.168.140.180:6443 -ServiceCIDR 10.96.0.0/12
-
 
默认情况下, Kube-OVN 使用节点 IP 所在的网卡作为隧道接口。 如果需要使用其它网卡，需要在安装前给节点添加指定的 Annotation，如 ovn.kubernetes.io/tunnel_interface=Ethernet1。
 
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\ No newline at end of file diff --git a/v1.13.x/advance/with-bgp/index.html b/v1.13.x/advance/with-bgp/index.html index c8dfc50f3..0ac2cc0c0 100644 --- a/v1.13.x/advance/with-bgp/index.html +++ b/v1.13.x/advance/with-bgp/index.html @@ -1,4 +1,4 @@ - BGP 支持 - Kube-OVN 文档

BGP 支持

Kube-OVN 支持将 Pods、Subnets、Services 和 EIPs 的 IP 地址通过 BGP 协议向外部进行路由广播，从而使得外部可以直接访问到集群内的 IP 地址。 如果需要使用该功能，需要在特定节点安装 kube-ovn-speaker 并对需要对外暴露的 Pod 或 Subnet 增加对应的 annotation。

如果要在 EIP 上使用 BGP，需要使用特殊参数创建 VPC NAT Gateway，有关更多信息，请参阅发布 EIPs。

安装 kube-ovn-speaker

kube-ovn-speaker 内使用 GoBGP 对外发布路由信息，并将访问暴露地址的下一跳路由指向自身。

由于部署 kube-ovn-speaker 的节点需要承担回程流量，因此需要选择特定节点进行部署：

kubectl label nodes speaker-node-1 ovn.kubernetes.io/bgp=true
+       
BGP 支持
 
Kube-OVN 支持将 Pods、Subnets、Services 和 EIPs 的 IP 地址通过 BGP 协议向外部进行路由广播，从而使得外部可以直接访问到集群内的 IP 地址。 如果需要使用该功能，需要在特定节点安装 kube-ovn-speaker 并对需要对外暴露的 Pod 或 Subnet 增加对应的 annotation。
 
如果要在 EIP 上使用 BGP，需要使用特殊参数创建 VPC NAT Gateway，有关更多信息，请参阅发布 EIPs。
 
安装 kube-ovn-speaker
 
kube-ovn-speaker 内使用 GoBGP 对外发布路由信息，并将访问暴露地址的下一跳路由指向自身。
 
由于部署 kube-ovn-speaker 的节点需要承担回程流量，因此需要选择特定节点进行部署：
 
kubectl label nodes speaker-node-1 ovn.kubernetes.io/bgp=true
 kubectl label nodes speaker-node-2 ovn.kubernetes.io/bgp=true
 
 
 
当存在多个 kube-ovn-speaker 实例时，每个实例都会对外发布路由，上游路由器需要支持多路径 ECMP。
 
 
下载对应 yaml:
 
wget https://raw.githubusercontent.com/kubeovn/kube-ovn/release-1.12/yamls/speaker.yaml
 
 
修改 yaml 内相应配置：
 
--neighbor-address=10.32.32.1
@@ -78,7 +78,7 @@
   - ovn-vpc-external-network # Network on which we'll speak BGP and receive/send traffic to the outside world
                              # BGP neighbors need to be on that network
 
 
现在可以通过注解，对外通过 BGP 发布这个 EIP：
 
kubectl annotate eip sample ovn.kubernetes.io/bgp=true
-
 
发布策略
 
kube-ovn-speaker 支持两种发布路由的策略:
 
     
  • Cluster: 在这个策略下要求每个 speaker 都会对外发布 Pod IPs/Subnet CIDRs，无论当前节点是否有具有特定 IP 或属于该节点上的子网 CIDR 的 Pod。换句话说，流量可能从任何 speaker 节点进入，然后在集群内部路由到实际的 Pod。在这种配置中可能会使用额外的跳数。这是 Pod 和 Subnet 的默认发布策略。
    •  
  • Local: 在这个策略下，Pod IPs 的路由只会从 Pod 所在的节点被发布。这意味着相比 Cluster 策略外部流量会直接到到 Pod 所在节点，跳数会更少。
    •  
 
 
注意: 为了使用 Local 发布策略，你需要在每个节点都运行 kube-ovn-speaker。如果 Pod 所在的节点没有 speaker 运行，路由将无法对外发布。
 
 
默认的发布策略为 Cluster，可以通过 Pod/Subnet 的 annotation ovn.kubernetes.io/bgp 来进行更改：
 
     
  • ovn.kubernetes.io/bgp=cluster 或 ovn.kubernetes.io/bgp=yes 将会使用 Cluster 策略。
    •  
  • ovn.kubernetes.io/bgp=local 将会使用 Local 策略。
    •  
 
 
注意：由于 Service 的流量最终是由 kube-proxy 进行处理，ClusterIP 类型 Service 对外发布路由只支持 Cluster 策略。
 
 
BGP 高级选项
 
kube-ovn-speaker 支持更多 BGP 参数进行高级配置，用户可根据自己网络环境进行调整：
 
     
  • announce-cluster-ip: 是否对外发布 Service 路由，默认为 false。
    •  
  • auth-password: BGP peer 的访问密码。
    •  
  • holdtime: BGP 邻居间的心跳探测时间，超过改时间没有消息的邻居将会被移除，默认为 90 秒。
    •  
  • graceful-restart: 是否启用 BGP Graceful Restart。
    •  
  • graceful-restart-time: BGP Graceful restart time 可参考 RFC4724 3。
    •  
  • graceful-restart-deferral-time: BGP Graceful restart deferral time 可参考 RFC4724 4.1。
    •  
  • passivemode: Speaker 运行在 passive 模式，不主动连接 peer。
    •  
  • ebgp-multihop: ebgp ttl 默认值为 1。
    •  
 
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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/with-cilium/index.html b/v1.13.x/advance/with-cilium/index.html index 684b6fe74..d69fd467a 100644 --- a/v1.13.x/advance/with-cilium/index.html +++ b/v1.13.x/advance/with-cilium/index.html @@ -1,4 +1,4 @@ - Cilium 集成 - Kube-OVN 文档

Cilium 集成

Cilium 是一款基于 eBPF 的网络和安全组件，Kube-OVN 利用其中的 CNI Chaining 模式来对已有功能进行增强。 用户可以同时使用 Kube-OVN 丰富的网络抽象能力和 eBPF 带来的监控和安全能力。

通过集成 Cilium，Kube-OVN 用户可以获得如下增益：

  • 更丰富高效的安全策略。
  • 基于 Hubble 的监控视图。

前提条件

  1. Linux 内核版本高于 4.19 或其他兼容内核以获得完整 eBPF 能力支持。
  2. 提前部署 Helm 为安装 Cilium 做准备，部署 Helm 请参考 Installing Helm。

配置 Kube-OVN

为了充分使用 Cilium 的安全能力，需要关闭 Kube-OVN 内的 networkpolicy 功能，并调整 CNI 配置优先级。

在 install.sh 脚本里修改下列变量：

ENABLE_NP=false
+       
Cilium 集成
 
Cilium 是一款基于 eBPF 的网络和安全组件，Kube-OVN 利用其中的 CNI Chaining 模式来对已有功能进行增强。 用户可以同时使用 Kube-OVN 丰富的网络抽象能力和 eBPF 带来的监控和安全能力。
 
通过集成 Cilium，Kube-OVN 用户可以获得如下增益：
 
     
  • 更丰富高效的安全策略。
    •  
  • 基于 Hubble 的监控视图。
    •  
 
 
前提条件
 
     
  1. Linux 内核版本高于 4.19 或其他兼容内核以获得完整 eBPF 能力支持。
    2.  
  2. 提前部署 Helm 为安装 Cilium 做准备，部署 Helm 请参考 Installing Helm。
    3.  
 
配置 Kube-OVN
 
为了充分使用 Cilium 的安全能力，需要关闭 Kube-OVN 内的 networkpolicy 功能，并调整 CNI 配置优先级。
 
在 install.sh 脚本里修改下列变量：
 
ENABLE_NP=false
 CNI_CONFIG_PRIORITY=10
 
 
若已部署完成，可通过修改 kube-ovn-controller 的启动参数进行调整 networkpolicy：
 
args:
 - --enable-np=false
@@ -67,7 +67,7 @@
 Cluster Pods:     8/11 managed by Cilium
 Image versions    cilium             quay.io/cilium/cilium:v1.10.5@sha256:0612218e28288db360c63677c09fafa2d17edda4f13867bcabf87056046b33bb: 2
                   cilium-operator    quay.io/cilium/operator-generic:v1.10.5@sha256:2d2f730f219d489ff0702923bf24c0002cd93eb4b47ba344375566202f56d972: 2
-
 
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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/with-openstack/index.html b/v1.13.x/advance/with-openstack/index.html index b836a0fcf..e73b7b67e 100644 --- a/v1.13.x/advance/with-openstack/index.html +++ b/v1.13.x/advance/with-openstack/index.html @@ -1,4 +1,4 @@ - OpenStack 集成 - Kube-OVN 文档

OpenStack 集成

在一些情况下，用户需要使用 OpenStack 运行虚拟机，使用 Kubernetes 运行容器，并需要容器和虚机之间网络互通并处于统一控制平面下。如果 OpenStack Neutron 侧同样使用 OVN 作为底层网络控制，那么 Kube-OVN 可以使用集群互联和共享底层 OVN 两种方式打通 OpenStack 和 Kubernetes 的网络。

集群互联

该模式和使用 OVN-IC 进行多集群互联打通两个 Kubernetes 集群网络方式类似，只不过将集群两端换成 OpenStack 和 Kubernetes。

前提条件

  1. 自动互联模式下 OpenStack 和 Kubernetes 内的子网 CIDR 不能相互重叠。
  2. 需要存在一组机器可以被每个集群通过网络访问，用来部署跨集群互联的控制器。
  3. 每个集群需要有一组可以通过 IP 进行跨集群互访的机器作为之后的网关节点。
  4. 该方案只打通 Kubernetes 默认子网和 OpenStack 的选定 VPC。

部署 OVN-IC 数据库

使用下面的命令启动 OVN-IC 数据库：

docker run --name=ovn-ic-db -d --network=host -v /etc/ovn/:/etc/ovn -v /var/run/ovn:/var/run/ovn -v /var/log/ovn:/var/log/ovn kubeovn/kube-ovn:v1.12.12 bash start-ic-db.sh
+       
OpenStack 集成
 
在一些情况下，用户需要使用 OpenStack 运行虚拟机，使用 Kubernetes 运行容器，并需要容器和虚机之间网络互通并处于统一控制平面下。如果 OpenStack Neutron 侧同样使用 OVN 作为底层网络控制，那么 Kube-OVN 可以使用集群互联和共享底层 OVN 两种方式打通 OpenStack 和 Kubernetes 的网络。
 
集群互联
 
该模式和使用 OVN-IC 进行多集群互联打通两个 Kubernetes 集群网络方式类似，只不过将集群两端换成 OpenStack 和 Kubernetes。
 
前提条件
 
     
  1. 自动互联模式下 OpenStack 和 Kubernetes 内的子网 CIDR 不能相互重叠。
    2.  
  2. 需要存在一组机器可以被每个集群通过网络访问，用来部署跨集群互联的控制器。
    3.  
  3. 每个集群需要有一组可以通过 IP 进行跨集群互访的机器作为之后的网关节点。
    4.  
  4. 该方案只打通 Kubernetes 默认子网和 OpenStack 的选定 VPC。
    5.  
 
部署 OVN-IC 数据库
 
使用下面的命令启动 OVN-IC 数据库：
 
docker run --name=ovn-ic-db -d --network=host -v /etc/ovn/:/etc/ovn -v /var/run/ovn:/var/run/ovn -v /var/log/ovn:/var/log/ovn kubeovn/kube-ovn:v1.12.12 bash start-ic-db.sh
 
 
Kubernetes 侧操作
 
在 kube-system Namespace 下创建 ovn-ic-config ConfigMap：
 
apiVersion: v1
 kind: ConfigMap
 metadata:
@@ -124,7 +124,7 @@
       imagePullPolicy: IfNotPresent
       name: ubuntu
   restartPolicy: Always
-
 
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\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/with-ovn-ic/index.html b/v1.13.x/advance/with-ovn-ic/index.html index b59b10447..f38feaae0 100644 --- a/v1.13.x/advance/with-ovn-ic/index.html +++ b/v1.13.x/advance/with-ovn-ic/index.html @@ -1,4 +1,4 @@ - 使用 OVN-IC 进行多集群互联 - Kube-OVN 文档

使用 OVN-IC 进行多集群互联

Kube-OVN 支持通过 OVN-IC 将两个 Kubernetes 集群 Pod 网络打通，打通后的两个集群内的 Pod 可以通过 Pod IP 进行直接通信。 Kube-OVN 使用隧道对跨集群流量进行封装，两个集群之间只要存在一组 IP 可达的机器即可完成容器网络的互通。

该模式的多集群互联为 Overlay 网络功能，Underlay 网络如果想要实现集群互联需要底层基础设施做网络打通。

前提条件

  1. 1.11.16 之后版本部署的集群默认关闭了集群互联的开关，需要在部署脚本 install.sh 里修改下列变量：

    ENABLE_IC=true
+       
    使用 OVN-IC 进行多集群互联
     
    Kube-OVN 支持通过 OVN-IC 将两个 Kubernetes 集群 Pod 网络打通，打通后的两个集群内的 Pod 可以通过 Pod IP 进行直接通信。 Kube-OVN 使用隧道对跨集群流量进行封装，两个集群之间只要存在一组 IP 可达的机器即可完成容器网络的互通。
     
     
    该模式的多集群互联为 Overlay 网络功能，Underlay 网络如果想要实现集群互联需要底层基础设施做网络打通。
     
     
     
    前提条件
     
       
    1.  
      1.11.16 之后版本部署的集群默认关闭了集群互联的开关，需要在部署脚本 install.sh 里修改下列变量：
       
      ENABLE_IC=true
 
       
      打开开关后部署集群，会出现组件 deployment ovn-ic-controller。 2. 自动互联模式下不同集群的子网 CIDR 不能相互重叠，默认子网需在安装时配置为不重叠的网段。若存在重叠需参考后续手动互联过程，只能将不重叠网段打通。 3. 需要存在一组机器可以被每个集群的 kube-ovn-controller 通过 IP 访问，用来部署跨集群互联的控制器。 4. 每个集群需要有一组可以通过 IP 进行跨集群互访的机器作为之后的网关节点。 5. 该功能只对默认 VPC 生效，用户自定义 VPC 无法使用互联功能。
       
      2.  
     
    部署单节点 OVN-IC 数据库
     
    单节点部署方案 1
     
    优先推荐方案 1，Kube-OVN v1.11.16 之后支持。
     
    该方法不区别 "单节点" 或者 "多节点高可用" 部署，控制器会以 Deployment 的形式部署在 master 节点上，集群 master 节点为 1，即单节点部署，master 节点为多个，即多节点高可用部署。
     
    先获取脚本 install-ovn-ic.sh，使用下面命令：
     
    wget https://raw.githubusercontent.com/kubeovn/kube-ovn/release-1.12/dist/images/install-ic-server.sh
 
     
    执行命令安装，其中 TS_NUM 表示集群互联的 ECMP Path 数量：
     
    sed 's/VERSION=.*/VERSION=v1.12.12/' dist/images/install-ic-server.sh | TS_NUM=3 bash
 
     
    执行成功输出如下：
     
    deployment.apps/ovn-ic-server created
@@ -173,7 +173,7 @@
 
     
    如果控制器是使用 deployment ovn-ic-server 部署：
     
    kubectl delete deployment ovn-ic-server -n kube-system
 
     
    然后在每个 master 节点上清理互联相关的 DB，命令如下：
     
    rm -f /etc/origin/ovn/ovn_ic_nb_db.db
 rm -f /etc/origin/ovn/ovn_ic_sb_db.db
-
     
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    评论
\ No newline at end of file +
\ No newline at end of file diff --git a/v1.13.x/advance/with-submariner/index.html b/v1.13.x/advance/with-submariner/index.html index df5be47f4..ac70fe14b 100644 --- a/v1.13.x/advance/with-submariner/index.html +++ b/v1.13.x/advance/with-submariner/index.html @@ -1,4 +1,4 @@ - 使用 Submariner 进行多集群互联 - Kube-OVN 文档

使用 Submariner 进行多集群互联

Submariner 作为可以打通多个 Kubernetes 集群 Pod 和 Service 网络的开源网络组件，能够帮助 Kube-OVN 实现多集群互联。

相比通过 OVN-IC 打通多集群网络的方式，Submariner 可以打通 Kube-OVN 和非 Kube-OVN 的集群网络，并 能提供 Service 的跨集群能力。但是 Submariner 目前只能实现默认子网的打通，无法实现多子网选择性打通。

前提条件

  • 两个集群的 Service CIDR 和默认子网的 CIDR 不能重叠。

部署 Submariner

下载 subctl 二进制文件，并部署到相应路径：

curl -Ls https://get.submariner.io | bash
+       
使用 Submariner 进行多集群互联
 
Submariner 作为可以打通多个 Kubernetes 集群 Pod 和 Service 网络的开源网络组件，能够帮助 Kube-OVN 实现多集群互联。
 
相比通过 OVN-IC 打通多集群网络的方式，Submariner 可以打通 Kube-OVN 和非 Kube-OVN 的集群网络，并 能提供 Service 的跨集群能力。但是 Submariner 目前只能实现默认子网的打通，无法实现多子网选择性打通。
 
前提条件
 
     
  • 两个集群的 Service CIDR 和默认子网的 CIDR 不能重叠。
    •  
 
部署 Submariner
 
下载 subctl 二进制文件，并部署到相应路径：
 
curl -Ls https://get.submariner.io | bash
 export PATH=$PATH:~/.local/bin
 echo export PATH=\$PATH:~/.local/bin >> ~/.profile
 
 
切换 kubeconfig 至希望部署 submariner-broker 的集群进行部署：
 
subctl deploy-broker
@@ -26,7 +26,7 @@
   - update
 
 
对于多节点的集群，需要将默认的 subnet ovn-default 的网关配置改为 centralized。为 submariner 配置的 gateway 节点需要和 subnet 节点完全相同。
 
接下来可以在两个集群内分别启动 Pod 并尝试使用 IP 进行相互访问。
 
如果出现网络互通问题可通过 subctl 命令进行诊断：
 
subctl show all
 subctl diagnose all
-
 
更多 Submariner 相关操作请查看 Submariner 用户手册。
 
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\ No newline at end of file +
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circle{fill:var(--md-mermaid-label-bg-color)}.actor{fill:var(--md-mermaid-sequence-actor-bg-color);stroke:var(--md-mermaid-sequence-actor-border-color)}text.actor>tspan{fill:var(--md-mermaid-sequence-actor-fg-color);font-family:var(--md-mermaid-font-family)}line{stroke:var(--md-mermaid-sequence-actor-line-color)}.actor-man circle,.actor-man line{fill:var(--md-mermaid-sequence-actorman-bg-color);stroke:var(--md-mermaid-sequence-actorman-line-color)}.messageLine0,.messageLine1{stroke:var(--md-mermaid-sequence-message-line-color)}.note{fill:var(--md-mermaid-sequence-note-bg-color);stroke:var(--md-mermaid-sequence-note-border-color)}.loopText,.loopText>tspan,.messageText,.noteText>tspan{stroke:none;font-family:var(--md-mermaid-font-family)!important}.messageText{fill:var(--md-mermaid-sequence-message-fg-color)}.loopText,.loopText>tspan{fill:var(--md-mermaid-sequence-loop-fg-color)}.noteText>tspan{fill:var(--md-mermaid-sequence-note-fg-color)}#arrowhead path{fill:var(--md-mermaid-sequence-message-line-color);stroke:none}.loopLine{fill:var(--md-mermaid-sequence-loop-bg-color);stroke:var(--md-mermaid-sequence-loop-border-color)}.labelBox{fill:var(--md-mermaid-sequence-label-bg-color);stroke:none}.labelText,.labelText>span{fill:var(--md-mermaid-sequence-label-fg-color);font-family:var(--md-mermaid-font-family)}.sequenceNumber{fill:var(--md-mermaid-sequence-number-fg-color)}rect.rect{fill:var(--md-mermaid-sequence-box-bg-color);stroke:none}rect.rect+text.text{fill:var(--md-mermaid-sequence-box-fg-color)}defs #sequencenumber{fill:var(--md-mermaid-sequence-number-bg-color)!important}";var Gr,za=0;function qa(){return typeof mermaid=="undefined"||mermaid instanceof Element?Tt("https://unpkg.com/mermaid@11/dist/mermaid.min.js"):I(void 0)}function Wn(e){return e.classList.remove("mermaid"),Gr||(Gr=qa().pipe(w(()=>mermaid.initialize({startOnLoad:!1,themeCSS:Fn,sequence:{actorFontSize:"16px",messageFontSize:"16px",noteFontSize:"16px"}})),m(()=>{}),G(1))),Gr.subscribe(()=>so(this,null,function*(){e.classList.add("mermaid");let t=`__mermaid_${za++}`,r=x("div",{class:"mermaid"}),o=e.textContent,{svg:n,fn:i}=yield mermaid.render(t,o),a=r.attachShadow({mode:"closed"});a.innerHTML=n,e.replaceWith(r),i==null||i(a)})),Gr.pipe(m(()=>({ref:e})))}var Un=x("table");function Dn(e){return e.replaceWith(Un),Un.replaceWith(_n(e)),I({ref:e})}function Qa(e){let t=e.find(r=>r.checked)||e[0];return O(...e.map(r=>h(r,"change").pipe(m(()=>R(`label[for="${r.id}"]`))))).pipe(Q(R(`label[for="${t.id}"]`)),m(r=>({active:r})))}function Vn(e,{viewport$:t,target$:r}){let o=R(".tabbed-labels",e),n=P(":scope > input",e),i=Kr("prev");e.append(i);let a=Kr("next");return e.append(a),C(()=>{let s=new 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l=R(`label[for="${c.id}"]`);l.replaceChildren(x("a",{href:`#${l.htmlFor}`,tabIndex:-1},...Array.from(l.childNodes))),h(l.firstElementChild,"click").pipe(U(p),b(f=>!(f.metaKey||f.ctrlKey)),w(f=>{f.preventDefault(),f.stopPropagation()})).subscribe(()=>{history.replaceState({},"",`#${l.htmlFor}`),l.click()})}return B("content.tabs.link")&&s.pipe(Ce(1),re(t)).subscribe(([{active:c},{offset:l}])=>{let f=c.innerText.trim();if(c.hasAttribute("data-md-switching"))c.removeAttribute("data-md-switching");else{let u=e.offsetTop-l.y;for(let y of P("[data-tabs]"))for(let M of P(":scope > input",y)){let X=R(`label[for="${M.id}"]`);if(X!==c&&X.innerText.trim()===f){X.setAttribute("data-md-switching",""),M.click();break}}window.scrollTo({top:e.offsetTop-u});let d=__md_get("__tabs")||[];__md_set("__tabs",[...new Set([f,...d])])}}),s.pipe(U(p)).subscribe(()=>{for(let c of P("audio, video",e))c.pause()}),Qa(n).pipe(w(c=>s.next(c)),_(()=>s.complete()),m(c=>$({ref:e},c)))}).pipe(Ke(se))}function Nn(e,{viewport$:t,target$:r,print$:o}){return O(...P(".annotate:not(.highlight)",e).map(n=>$n(n,{target$:r,print$:o})),...P("pre:not(.mermaid) > code",e).map(n=>In(n,{target$:r,print$:o})),...P("pre.mermaid",e).map(n=>Wn(n)),...P("table:not([class])",e).map(n=>Dn(n)),...P("details",e).map(n=>jn(n,{target$:r,print$:o})),...P("[data-tabs]",e).map(n=>Vn(n,{viewport$:t,target$:r})),...P("[title]",e).filter(()=>B("content.tooltips")).map(n=>mt(n,{viewport$:t})))}function Ka(e,{alert$:t}){return t.pipe(v(r=>O(I(!0),I(!1).pipe(Ge(2e3))).pipe(m(o=>({message:r,active:o})))))}function zn(e,t){let r=R(".md-typeset",e);return C(()=>{let o=new g;return o.subscribe(({message:n,active:i})=>{e.classList.toggle("md-dialog--active",i),r.textContent=n}),Ka(e,t).pipe(w(n=>o.next(n)),_(()=>o.complete()),m(n=>$({ref:e},n)))})}var Ya=0;function Ba(e,t){document.body.append(e);let{width:r}=ce(e);e.style.setProperty("--md-tooltip-width",`${r}px`),e.remove();let o=cr(t),n=typeof o!="undefined"?Ne(o):I({x:0,y:0}),i=O(et(t),$t(t)).pipe(K());return z([i,n]).pipe(m(([a,s])=>{let{x:p,y:c}=Ve(t),l=ce(t),f=t.closest("table");return f&&t.parentElement&&(p+=f.offsetLeft+t.parentElement.offsetLeft,c+=f.offsetTop+t.parentElement.offsetTop),{active:a,offset:{x:p-s.x+l.width/2-r/2,y:c-s.y+l.height+8}}}))}function qn(e){let t=e.title;if(!t.length)return S;let r=`__tooltip_${Ya++}`,o=Rt(r,"inline"),n=R(".md-typeset",o);return n.innerHTML=t,C(()=>{let i=new g;return i.subscribe({next({offset:a}){o.style.setProperty("--md-tooltip-x",`${a.x}px`),o.style.setProperty("--md-tooltip-y",`${a.y}px`)},complete(){o.style.removeProperty("--md-tooltip-x"),o.style.removeProperty("--md-tooltip-y")}}),O(i.pipe(b(({active:a})=>a)),i.pipe(_e(250),b(({active:a})=>!a))).subscribe({next({active:a}){a?(e.insertAdjacentElement("afterend",o),e.setAttribute("aria-describedby",r),e.removeAttribute("title")):(o.remove(),e.removeAttribute("aria-describedby"),e.setAttribute("title",t))},complete(){o.remove(),e.removeAttribute("aria-describedby"),e.setAttribute("title",t)}}),i.pipe(Le(16,me)).subscribe(({active:a})=>{o.classList.toggle("md-tooltip--active",a)}),i.pipe(pt(125,me),b(()=>!!e.offsetParent),m(()=>e.offsetParent.getBoundingClientRect()),m(({x:a})=>a)).subscribe({next(a){a?o.style.setProperty("--md-tooltip-0",`${-a}px`):o.style.removeProperty("--md-tooltip-0")},complete(){o.style.removeProperty("--md-tooltip-0")}}),Ba(o,e).pipe(w(a=>i.next(a)),_(()=>i.complete()),m(a=>$({ref:e},a)))}).pipe(Ke(se))}function 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g;r.subscribe({next({active:n}){e.classList.toggle("md-header__title--active",n)},complete(){e.classList.remove("md-header__title--active")}});let o=fe(".md-content h1");return typeof o=="undefined"?S:Ja(o,t).pipe(w(n=>r.next(n)),_(()=>r.complete()),m(n=>$({ref:e},n)))})}function Bn(e,{viewport$:t,header$:r}){let o=r.pipe(m(({height:i})=>i),K()),n=o.pipe(v(()=>ge(e).pipe(m(({height:i})=>({top:e.offsetTop,bottom:e.offsetTop+i})),ee("bottom"))));return z([o,n,t]).pipe(m(([i,{top:a,bottom:s},{offset:{y:p},size:{height:c}}])=>(c=Math.max(0,c-Math.max(0,a-p,i)-Math.max(0,c+p-s)),{offset:a-i,height:c,active:a-i<=p})),K((i,a)=>i.offset===a.offset&&i.height===a.height&&i.active===a.active))}function Xa(e){let t=__md_get("__palette")||{index:e.findIndex(o=>matchMedia(o.getAttribute("data-md-color-media")).matches)},r=Math.max(0,Math.min(t.index,e.length-1));return I(...e).pipe(ne(o=>h(o,"change").pipe(m(()=>o))),Q(e[r]),m(o=>({index:e.indexOf(o),color:{media:o.getAttribute("data-md-color-media"),scheme:o.getAttribute("data-md-color-scheme"),primary:o.getAttribute("data-md-color-primary"),accent:o.getAttribute("data-md-color-accent")}})),G(1))}function Gn(e){let t=P("input",e),r=x("meta",{name:"theme-color"});document.head.appendChild(r);let o=x("meta",{name:"color-scheme"});document.head.appendChild(o);let n=Pt("(prefers-color-scheme: light)");return C(()=>{let i=new g;return i.subscribe(a=>{if(document.body.setAttribute("data-md-color-switching",""),a.color.media==="(prefers-color-scheme)"){let s=matchMedia("(prefers-color-scheme: light)"),p=document.querySelector(s.matches?"[data-md-color-media='(prefers-color-scheme: light)']":"[data-md-color-media='(prefers-color-scheme: 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Jr=Lt(Br());function Za(e){e.setAttribute("data-md-copying","");let t=e.closest("[data-copy]"),r=t?t.getAttribute("data-copy"):e.innerText;return e.removeAttribute("data-md-copying"),r.trimEnd()}function Xn({alert$:e}){Jr.default.isSupported()&&new j(t=>{new Jr.default("[data-clipboard-target], [data-clipboard-text]",{text:r=>r.getAttribute("data-clipboard-text")||Za(R(r.getAttribute("data-clipboard-target")))}).on("success",r=>t.next(r))}).pipe(w(t=>{t.trigger.focus()}),m(()=>Ee("clipboard.copied"))).subscribe(e)}function Zn(e,t){return e.protocol=t.protocol,e.hostname=t.hostname,e}function es(e,t){let r=new Map;for(let o of P("url",e)){let n=R("loc",o),i=[Zn(new URL(n.textContent),t)];r.set(`${i[0]}`,i);for(let a of P("[rel=alternate]",o)){let s=a.getAttribute("href");s!=null&&i.push(Zn(new URL(s),t))}}return r}function ur(e){return fn(new URL("sitemap.xml",e)).pipe(m(t=>es(t,new URL(e))),de(()=>I(new Map)))}function ts(e,t){if(!(e.target instanceof Element))return S;let r=e.target.closest("a");if(r===null)return S;if(r.target||e.metaKey||e.ctrlKey)return S;let o=new URL(r.href);return o.search=o.hash="",t.has(`${o}`)?(e.preventDefault(),I(new URL(r.href))):S}function ei(e){let t=new Map;for(let r of P(":scope > *",e.head))t.set(r.outerHTML,r);return t}function ti(e){for(let t of P("[href], [src]",e))for(let r of["href","src"]){let o=t.getAttribute(r);if(o&&!/^(?:[a-z]+:)?\/\//i.test(o)){t[r]=t[r];break}}return I(e)}function rs(e){for(let o of["[data-md-component=announce]","[data-md-component=container]","[data-md-component=header-topic]","[data-md-component=outdated]","[data-md-component=logo]","[data-md-component=skip]",...B("navigation.tabs.sticky")?["[data-md-component=tabs]"]:[]]){let n=fe(o),i=fe(o,e);typeof n!="undefined"&&typeof i!="undefined"&&n.replaceWith(i)}let t=ei(document);for(let[o,n]of ei(e))t.has(o)?t.delete(o):document.head.appendChild(n);for(let o of t.values()){let 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g,o=r.pipe(Z(),ie(!0));z([t.pipe(Ae(jt)),r],(i,a)=>a).pipe(ee("value")).subscribe(({value:i})=>t.next({type:2,data:i})),r.pipe(ee("focus")).subscribe(({focus:i})=>{i&&Je("search",i)}),h(e.form,"reset").pipe(U(o)).subscribe(()=>e.focus());let n=R("header [for=__search]");return h(n,"click").subscribe(()=>e.focus()),is(e,{worker$:t}).pipe(w(i=>r.next(i)),_(()=>r.complete()),m(i=>$({ref:e},i)),G(1))}function ci(e,{worker$:t,query$:r}){let o=new g,n=rn(e.parentElement).pipe(b(Boolean)),i=e.parentElement,a=R(":scope > :first-child",e),s=R(":scope > :last-child",e);ze("search").subscribe(l=>s.setAttribute("role",l?"list":"presentation")),o.pipe(re(r),Ur(t.pipe(Ae(jt)))).subscribe(([{items:l},{value:f}])=>{switch(l.length){case 0:a.textContent=f.length?Ee("search.result.none"):Ee("search.result.placeholder");break;case 1:a.textContent=Ee("search.result.one");break;default:let u=sr(l.length);a.textContent=Ee("search.result.other",u)}});let p=o.pipe(w(()=>s.innerHTML=""),v(({items:l})=>O(I(...l.slice(0,10)),I(...l.slice(10)).pipe(Be(4),Vr(n),v(([f])=>f)))),m(Mn),pe());return p.subscribe(l=>s.appendChild(l)),p.pipe(ne(l=>{let f=fe("details",l);return typeof f=="undefined"?S:h(f,"toggle").pipe(U(o),m(()=>f))})).subscribe(l=>{l.open===!1&&l.offsetTop<=i.scrollTop&&i.scrollTo({top:l.offsetTop})}),t.pipe(b(dr),m(({data:l})=>l)).pipe(w(l=>o.next(l)),_(()=>o.complete()),m(l=>$({ref:e},l)))}function as(e,{query$:t}){return t.pipe(m(({value:r})=>{let o=ye();return o.hash="",r=r.replace(/\s+/g,"+").replace(/&/g,"%26").replace(/=/g,"%3D"),o.search=`q=${r}`,{url:o}}))}function pi(e,t){let r=new g,o=r.pipe(Z(),ie(!0));return r.subscribe(({url:n})=>{e.setAttribute("data-clipboard-text",e.href),e.href=`${n}`}),h(e,"click").pipe(U(o)).subscribe(n=>n.preventDefault()),as(e,t).pipe(w(n=>r.next(n)),_(()=>r.complete()),m(n=>$({ref:e},n)))}function li(e,{worker$:t,keyboard$:r}){let o=new g,n=Se("search-query"),i=O(h(n,"keydown"),h(n,"focus")).pipe(ve(se),m(()=>n.value),K());return o.pipe(He(i),m(([{suggest:s},p])=>{let c=p.split(/([\s-]+)/);if(s!=null&&s.length&&c[c.length-1]){let l=s[s.length-1];l.startsWith(c[c.length-1])&&(c[c.length-1]=l)}else c.length=0;return c})).subscribe(s=>e.innerHTML=s.join("").replace(/\s/g," ")),r.pipe(b(({mode:s})=>s==="search")).subscribe(s=>{switch(s.type){case"ArrowRight":e.innerText.length&&n.selectionStart===n.value.length&&(n.value=e.innerText);break}}),t.pipe(b(dr),m(({data:s})=>s)).pipe(w(s=>o.next(s)),_(()=>o.complete()),m(()=>({ref:e})))}function mi(e,{index$:t,keyboard$:r}){let o=xe();try{let n=ii(o.search,t),i=Se("search-query",e),a=Se("search-result",e);h(e,"click").pipe(b(({target:p})=>p instanceof Element&&!!p.closest("a"))).subscribe(()=>Je("search",!1)),r.pipe(b(({mode:p})=>p==="search")).subscribe(p=>{let c=Ie();switch(p.type){case"Enter":if(c===i){let l=new Map;for(let f of P(":first-child [href]",a)){let 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z([t,r.pipe(Q(ye()),b(o=>!!o.searchParams.get("h")))]).pipe(m(([o,n])=>ni(o.config)(n.searchParams.get("h"))),m(o=>{var a;let n=new Map,i=document.createNodeIterator(e,NodeFilter.SHOW_TEXT);for(let s=i.nextNode();s;s=i.nextNode())if((a=s.parentElement)!=null&&a.offsetHeight){let p=s.textContent,c=o(p);c.length>p.length&&n.set(s,c)}for(let[s,p]of n){let{childNodes:c}=x("span",null,p);s.replaceWith(...Array.from(c))}return{ref:e,nodes:n}}))}function ss(e,{viewport$:t,main$:r}){let o=e.closest(".md-grid"),n=o.offsetTop-o.parentElement.offsetTop;return z([r,t]).pipe(m(([{offset:i,height:a},{offset:{y:s}}])=>(a=a+Math.min(n,Math.max(0,s-i))-n,{height:a,locked:s>=i+n})),K((i,a)=>i.height===a.height&&i.locked===a.locked))}function Xr(e,o){var n=o,{header$:t}=n,r=ao(n,["header$"]);let i=R(".md-sidebar__scrollwrap",e),{y:a}=Ve(i);return C(()=>{let s=new g,p=s.pipe(Z(),ie(!0)),c=s.pipe(Le(0,me));return 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r=`https://api.github.com/users/${e}`;return je(r).pipe(m(o=>({repositories:o.public_repos})),De({}))}}function di(e,t){let r=`https://${e}/api/v4/projects/${encodeURIComponent(t)}`;return st(je(`${r}/releases/permalink/latest`).pipe(de(()=>S),m(({tag_name:o})=>({version:o})),De({})),je(r).pipe(de(()=>S),m(({star_count:o,forks_count:n})=>({stars:o,forks:n})),De({}))).pipe(m(([o,n])=>$($({},o),n)))}function hi(e){let t=e.match(/^.+github\.com\/([^/]+)\/?([^/]+)?/i);if(t){let[,r,o]=t;return ui(r,o)}if(t=e.match(/^.+?([^/]*gitlab[^/]+)\/(.+?)\/?$/i),t){let[,r,o]=t;return di(r,o)}return S}var cs;function ps(e){return cs||(cs=C(()=>{let t=__md_get("__source",sessionStorage);if(t)return I(t);if(ae("consent").length){let o=__md_get("__consent");if(!(o&&o.github))return S}return hi(e.href).pipe(w(o=>__md_set("__source",o,sessionStorage)))}).pipe(de(()=>S),b(t=>Object.keys(t).length>0),m(t=>({facts:t})),G(1)))}function bi(e){let t=R(":scope > :last-child",e);return C(()=>{let r=new g;return 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n=t.pipe(m(({offset:{y:a}})=>a),Be(2,1),m(([a,s])=>a>s&&s>0),K()),i=r.pipe(m(({active:a})=>a));return z([i,n]).pipe(m(([a,s])=>!(a&&s)),K(),U(o.pipe(Ce(1))),ie(!0),ct({delay:250}),m(a=>({hidden:a})))}function yi(e,{viewport$:t,header$:r,main$:o,target$:n}){let i=new g,a=i.pipe(Z(),ie(!0));return i.subscribe({next({hidden:s}){e.hidden=s,s?(e.setAttribute("tabindex","-1"),e.blur()):e.removeAttribute("tabindex")},complete(){e.style.top="",e.hidden=!0,e.removeAttribute("tabindex")}}),r.pipe(U(a),ee("height")).subscribe(({height:s})=>{e.style.top=`${s+16}px`}),h(e,"click").subscribe(s=>{s.preventDefault(),window.scrollTo({top:0})}),fs(e,{viewport$:t,main$:o,target$:n}).pipe(w(s=>i.next(s)),_(()=>i.complete()),m(s=>$({ref:e},s)))}function xi({document$:e,viewport$:t}){e.pipe(v(()=>P(".md-ellipsis")),ne(r=>tt(r).pipe(U(e.pipe(Ce(1))),b(o=>o),m(()=>r),Te(1))),b(r=>r.offsetWidth{let o=r.innerText,n=r.closest("a")||r;return n.title=o,B("content.tooltips")?mt(n,{viewport$:t}).pipe(U(e.pipe(Ce(1))),_(()=>n.removeAttribute("title"))):S})).subscribe(),B("content.tooltips")&&e.pipe(v(()=>P(".md-status")),ne(r=>mt(r,{viewport$:t}))).subscribe()}function Ei({document$:e,tablet$:t}){e.pipe(v(()=>P(".md-toggle--indeterminate")),w(r=>{r.indeterminate=!0,r.checked=!1}),ne(r=>h(r,"change").pipe(Dr(()=>r.classList.contains("md-toggle--indeterminate")),m(()=>r))),re(t)).subscribe(([r,o])=>{r.classList.remove("md-toggle--indeterminate"),o&&(r.checked=!1)})}function us(){return/(iPad|iPhone|iPod)/.test(navigator.userAgent)}function wi({document$:e}){e.pipe(v(()=>P("[data-md-scrollfix]")),w(t=>t.removeAttribute("data-md-scrollfix")),b(us),ne(t=>h(t,"touchstart").pipe(m(()=>t)))).subscribe(t=>{let r=t.scrollTop;r===0?t.scrollTop=1:r+t.offsetHeight===t.scrollHeight&&(t.scrollTop=r-1)})}function Ti({viewport$:e,tablet$:t}){z([ze("search"),t]).pipe(m(([r,o])=>r&&!o),v(r=>I(r).pipe(Ge(r?400:100))),re(e)).subscribe(([r,{offset:{y:o}}])=>{if(r)document.body.setAttribute("data-md-scrolllock",""),document.body.style.top=`-${o}px`;else{let n=-1*parseInt(document.body.style.top,10);document.body.removeAttribute("data-md-scrolllock"),document.body.style.top="",n&&window.scrollTo(0,n)}})}Object.entries||(Object.entries=function(e){let t=[];for(let r of Object.keys(e))t.push([r,e[r]]);return t});Object.values||(Object.values=function(e){let t=[];for(let r of Object.keys(e))t.push(e[r]);return t});typeof Element!="undefined"&&(Element.prototype.scrollTo||(Element.prototype.scrollTo=function(e,t){typeof e=="object"?(this.scrollLeft=e.left,this.scrollTop=e.top):(this.scrollLeft=e,this.scrollTop=t)}),Element.prototype.replaceWith||(Element.prototype.replaceWith=function(...e){let t=this.parentNode;if(t){e.length===0&&t.removeChild(this);for(let r=e.length-1;r>=0;r--){let o=e[r];typeof 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t!="undefined"&<(t);break;case"n":case".":let r=fe("link[rel=next]");typeof r!="undefined"&<(r);break;case"Enter":let o=Ie();o instanceof HTMLLabelElement&&o.click()}});xi({viewport$:Oe,document$:ot});Ei({document$:ot,tablet$:hr});wi({document$:ot});Ti({viewport$:Oe,tablet$:hr});var rt=Qn(Se("header"),{viewport$:Oe}),Ft=ot.pipe(m(()=>Se("main")),v(e=>Bn(e,{viewport$:Oe,header$:rt})),G(1)),hs=O(...ae("consent").map(e=>xn(e,{target$:Mt})),...ae("dialog").map(e=>zn(e,{alert$:to})),...ae("header").map(e=>Kn(e,{viewport$:Oe,header$:rt,main$:Ft})),...ae("palette").map(e=>Gn(e)),...ae("progress").map(e=>Jn(e,{progress$:ro})),...ae("search").map(e=>mi(e,{index$:Li,keyboard$:eo})),...ae("source").map(e=>bi(e))),bs=C(()=>O(...ae("announce").map(e=>yn(e)),...ae("content").map(e=>Nn(e,{viewport$:Oe,target$:Mt,print$:Mi})),...ae("content").map(e=>B("search.highlight")?fi(e,{index$:Li,location$:Wt}):S),...ae("header-title").map(e=>Yn(e,{viewport$:Oe,header$:rt})),...ae("sidebar").map(e=>e.getAttribute("data-md-type")==="navigation"?Nr(Oi,()=>Xr(e,{viewport$:Oe,header$:rt,main$:Ft})):Nr(hr,()=>Xr(e,{viewport$:Oe,header$:rt,main$:Ft}))),...ae("tabs").map(e=>vi(e,{viewport$:Oe,header$:rt})),...ae("toc").map(e=>gi(e,{viewport$:Oe,header$:rt,main$:Ft,target$:Mt})),...ae("top").map(e=>yi(e,{viewport$:Oe,header$:rt,main$:Ft,target$:Mt})))),_i=ot.pipe(v(()=>bs),Re(hs),G(1));_i.subscribe();window.document$=ot;window.location$=Wt;window.target$=Mt;window.keyboard$=eo;window.viewport$=Oe;window.tablet$=hr;window.screen$=Oi;window.print$=Mi;window.alert$=to;window.progress$=ro;window.component$=_i;})(); 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week: true,\n time: true,\n datetime: true,\n 'datetime-local': true\n };\n\n /**\n * Helper function for legacy browsers and iframes which sometimes focus\n * elements like document, body, and non-interactive SVG.\n * @param {Element} el\n */\n function isValidFocusTarget(el) {\n if (\n el &&\n el !== document &&\n el.nodeName !== 'HTML' &&\n el.nodeName !== 'BODY' &&\n 'classList' in el &&\n 'contains' in el.classList\n ) {\n return true;\n }\n return false;\n }\n\n /**\n * Computes whether the given element should automatically trigger the\n * `focus-visible` class being added, i.e. whether it should always match\n * `:focus-visible` when focused.\n * @param {Element} el\n * @return {boolean}\n */\n function focusTriggersKeyboardModality(el) {\n var type = el.type;\n var tagName = el.tagName;\n\n if (tagName === 'INPUT' && inputTypesAllowlist[type] && !el.readOnly) {\n return true;\n }\n\n if (tagName === 'TEXTAREA' && !el.readOnly) {\n return true;\n }\n\n if (el.isContentEditable) {\n return true;\n }\n\n return false;\n }\n\n /**\n * Add the `focus-visible` class to the given element if it was not added by\n * the author.\n * @param {Element} el\n */\n function addFocusVisibleClass(el) {\n if (el.classList.contains('focus-visible')) {\n return;\n }\n el.classList.add('focus-visible');\n el.setAttribute('data-focus-visible-added', '');\n }\n\n /**\n * Remove the `focus-visible` class from the given element if it was not\n * originally added by the author.\n * @param {Element} el\n */\n function removeFocusVisibleClass(el) {\n if (!el.hasAttribute('data-focus-visible-added')) {\n return;\n }\n el.classList.remove('focus-visible');\n el.removeAttribute('data-focus-visible-added');\n }\n\n /**\n * If the most recent user interaction was via the keyboard;\n * and the key press did not include a meta, alt/option, or control key;\n * then the modality is keyboard. Otherwise, the modality is not keyboard.\n * Apply `focus-visible` to any current active element and keep track\n * of our keyboard modality state with `hadKeyboardEvent`.\n * @param {KeyboardEvent} e\n */\n function onKeyDown(e) {\n if (e.metaKey || e.altKey || e.ctrlKey) {\n return;\n }\n\n if (isValidFocusTarget(scope.activeElement)) {\n addFocusVisibleClass(scope.activeElement);\n }\n\n hadKeyboardEvent = true;\n }\n\n /**\n * If at any point a user clicks with a pointing device, ensure that we change\n * the modality away from keyboard.\n * This avoids the situation where a user presses a key on an already focused\n * element, and then clicks on a different element, focusing it with a\n * pointing device, while we still think we're in keyboard modality.\n * @param {Event} e\n */\n function onPointerDown(e) {\n hadKeyboardEvent = false;\n }\n\n /**\n * On `focus`, add the `focus-visible` class to the target if:\n * - the target received focus as a result of keyboard navigation, or\n * - the event target is an element that will likely require interaction\n * via the keyboard (e.g. a text box)\n * @param {Event} e\n */\n function onFocus(e) {\n // Prevent IE from focusing the document or HTML element.\n if (!isValidFocusTarget(e.target)) {\n return;\n }\n\n if (hadKeyboardEvent || focusTriggersKeyboardModality(e.target)) {\n addFocusVisibleClass(e.target);\n }\n }\n\n /**\n * On `blur`, remove the `focus-visible` class from the target.\n * @param {Event} e\n */\n function onBlur(e) {\n if (!isValidFocusTarget(e.target)) {\n return;\n }\n\n if (\n e.target.classList.contains('focus-visible') ||\n e.target.hasAttribute('data-focus-visible-added')\n ) {\n // To detect a tab/window switch, we look for a blur event followed\n // rapidly by a visibility change.\n // If we don't see a visibility change within 100ms, it's probably a\n // regular focus change.\n hadFocusVisibleRecently = true;\n window.clearTimeout(hadFocusVisibleRecentlyTimeout);\n hadFocusVisibleRecentlyTimeout = window.setTimeout(function() {\n hadFocusVisibleRecently = false;\n }, 100);\n removeFocusVisibleClass(e.target);\n }\n }\n\n /**\n * If the user changes tabs, keep track of whether or not the previously\n * focused element had .focus-visible.\n * @param {Event} e\n */\n function onVisibilityChange(e) {\n if (document.visibilityState === 'hidden') {\n // If the tab becomes active again, the browser will handle calling focus\n // on the element (Safari actually calls it twice).\n // If this tab change caused a blur on an element with focus-visible,\n // re-apply the class when the user switches back to the tab.\n if (hadFocusVisibleRecently) {\n hadKeyboardEvent = true;\n }\n addInitialPointerMoveListeners();\n }\n }\n\n /**\n * Add a group of listeners to detect usage of any pointing devices.\n * These listeners will be added when the polyfill first loads, and anytime\n * the window is blurred, so that they are active when the window regains\n * focus.\n */\n function addInitialPointerMoveListeners() {\n document.addEventListener('mousemove', onInitialPointerMove);\n document.addEventListener('mousedown', onInitialPointerMove);\n document.addEventListener('mouseup', onInitialPointerMove);\n document.addEventListener('pointermove', onInitialPointerMove);\n document.addEventListener('pointerdown', onInitialPointerMove);\n document.addEventListener('pointerup', onInitialPointerMove);\n document.addEventListener('touchmove', onInitialPointerMove);\n document.addEventListener('touchstart', onInitialPointerMove);\n document.addEventListener('touchend', onInitialPointerMove);\n }\n\n function removeInitialPointerMoveListeners() {\n document.removeEventListener('mousemove', onInitialPointerMove);\n document.removeEventListener('mousedown', onInitialPointerMove);\n document.removeEventListener('mouseup', onInitialPointerMove);\n document.removeEventListener('pointermove', onInitialPointerMove);\n document.removeEventListener('pointerdown', onInitialPointerMove);\n document.removeEventListener('pointerup', onInitialPointerMove);\n document.removeEventListener('touchmove', onInitialPointerMove);\n document.removeEventListener('touchstart', onInitialPointerMove);\n document.removeEventListener('touchend', onInitialPointerMove);\n }\n\n /**\n * When the polfyill first loads, assume the user is in keyboard modality.\n * If any event is received from a pointing device (e.g. mouse, pointer,\n * touch), turn off keyboard modality.\n * This accounts for situations where focus enters the page from the URL bar.\n * @param {Event} e\n */\n function onInitialPointerMove(e) {\n // Work around a Safari quirk that fires a mousemove on whenever the\n // window blurs, even if you're tabbing out of the page. \u00AF\\_(\u30C4)_/\u00AF\n if (e.target.nodeName && e.target.nodeName.toLowerCase() === 'html') {\n return;\n }\n\n hadKeyboardEvent = false;\n removeInitialPointerMoveListeners();\n }\n\n // For some kinds of state, we are interested in changes at the global scope\n // only. For example, global pointer input, global key presses and global\n // visibility change should affect the state at every scope:\n document.addEventListener('keydown', onKeyDown, true);\n document.addEventListener('mousedown', onPointerDown, true);\n document.addEventListener('pointerdown', onPointerDown, true);\n document.addEventListener('touchstart', onPointerDown, true);\n document.addEventListener('visibilitychange', onVisibilityChange, true);\n\n addInitialPointerMoveListeners();\n\n // For focus and blur, we specifically care about state changes in the local\n // scope. This is because focus / blur events that originate from within a\n // shadow root are not re-dispatched from the host element if it was already\n // the active element in its own scope:\n scope.addEventListener('focus', onFocus, true);\n scope.addEventListener('blur', onBlur, true);\n\n // We detect that a node is a ShadowRoot by ensuring that it is a\n // DocumentFragment and also has a host property. This check covers native\n // implementation and polyfill implementation transparently. If we only cared\n // about the native implementation, we could just check if the scope was\n // an instance of a ShadowRoot.\n if (scope.nodeType === Node.DOCUMENT_FRAGMENT_NODE && scope.host) {\n // Since a ShadowRoot is a special kind of DocumentFragment, it does not\n // have a root element to add a class to. So, we add this attribute to the\n // host element instead:\n scope.host.setAttribute('data-js-focus-visible', '');\n } else if (scope.nodeType === Node.DOCUMENT_NODE) {\n document.documentElement.classList.add('js-focus-visible');\n document.documentElement.setAttribute('data-js-focus-visible', '');\n }\n }\n\n // It is important to wrap all references to global window and document in\n // these checks to support server-side rendering use cases\n // @see https://github.com/WICG/focus-visible/issues/199\n if (typeof window !== 'undefined' && typeof document !== 'undefined') {\n // Make the polyfill helper globally available. This can be used as a signal\n // to interested libraries that wish to coordinate with the polyfill for e.g.,\n // applying the polyfill to a shadow root:\n window.applyFocusVisiblePolyfill = applyFocusVisiblePolyfill;\n\n // Notify interested libraries of the polyfill's presence, in case the\n // polyfill was loaded lazily:\n var event;\n\n try {\n event = new CustomEvent('focus-visible-polyfill-ready');\n } catch (error) {\n // IE11 does not support using CustomEvent as a constructor directly:\n event = document.createEvent('CustomEvent');\n event.initCustomEvent('focus-visible-polyfill-ready', false, false, {});\n }\n\n window.dispatchEvent(event);\n }\n\n if (typeof document !== 'undefined') {\n // Apply the polyfill to the global document, so that no JavaScript\n // coordination is required to use the polyfill in the top-level document:\n applyFocusVisiblePolyfill(document);\n }\n\n})));\n", "/*!\n * escape-html\n * Copyright(c) 2012-2013 TJ Holowaychuk\n * Copyright(c) 2015 Andreas Lubbe\n * Copyright(c) 2015 Tiancheng \"Timothy\" Gu\n * MIT Licensed\n */\n\n'use strict';\n\n/**\n * Module variables.\n * @private\n */\n\nvar matchHtmlRegExp = /[\"'&<>]/;\n\n/**\n * Module exports.\n * @public\n */\n\nmodule.exports = escapeHtml;\n\n/**\n * Escape special characters in the given string of html.\n *\n * @param {string} string The string to escape for inserting into HTML\n * @return {string}\n * @public\n */\n\nfunction escapeHtml(string) {\n var str = '' + string;\n var match = matchHtmlRegExp.exec(str);\n\n if (!match) {\n return str;\n }\n\n var escape;\n var html = '';\n var index = 0;\n var lastIndex = 0;\n\n for (index = match.index; index < str.length; index++) {\n switch (str.charCodeAt(index)) {\n case 34: // \"\n escape = '"';\n break;\n case 38: // &\n escape = '&';\n break;\n case 39: // '\n escape = ''';\n break;\n case 60: // <\n escape = '<';\n break;\n case 62: // >\n escape = '>';\n break;\n default:\n continue;\n }\n\n if (lastIndex !== index) {\n html += str.substring(lastIndex, index);\n }\n\n lastIndex = index + 1;\n html += escape;\n }\n\n return lastIndex !== index\n ? html + str.substring(lastIndex, index)\n : html;\n}\n", "/*!\n * clipboard.js v2.0.11\n * https://clipboardjs.com/\n *\n * Licensed MIT \u00A9 Zeno Rocha\n */\n(function webpackUniversalModuleDefinition(root, factory) {\n\tif(typeof exports === 'object' && typeof module === 'object')\n\t\tmodule.exports = factory();\n\telse if(typeof define === 'function' && define.amd)\n\t\tdefine([], factory);\n\telse if(typeof exports === 'object')\n\t\texports[\"ClipboardJS\"] = factory();\n\telse\n\t\troot[\"ClipboardJS\"] = factory();\n})(this, function() {\nreturn /******/ (function() { // webpackBootstrap\n/******/ \tvar __webpack_modules__ = ({\n\n/***/ 686:\n/***/ (function(__unused_webpack_module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n\n// EXPORTS\n__webpack_require__.d(__webpack_exports__, {\n \"default\": function() { return /* binding */ clipboard; }\n});\n\n// EXTERNAL MODULE: ./node_modules/tiny-emitter/index.js\nvar tiny_emitter = __webpack_require__(279);\nvar tiny_emitter_default = /*#__PURE__*/__webpack_require__.n(tiny_emitter);\n// EXTERNAL MODULE: ./node_modules/good-listener/src/listen.js\nvar listen = __webpack_require__(370);\nvar listen_default = /*#__PURE__*/__webpack_require__.n(listen);\n// EXTERNAL MODULE: ./node_modules/select/src/select.js\nvar src_select = __webpack_require__(817);\nvar select_default = /*#__PURE__*/__webpack_require__.n(src_select);\n;// CONCATENATED MODULE: ./src/common/command.js\n/**\n * Executes a given operation type.\n * @param {String} type\n * @return {Boolean}\n */\nfunction command(type) {\n try {\n return document.execCommand(type);\n } catch (err) {\n return false;\n }\n}\n;// CONCATENATED MODULE: ./src/actions/cut.js\n\n\n/**\n * Cut action wrapper.\n * @param {String|HTMLElement} target\n * @return {String}\n */\n\nvar ClipboardActionCut = function ClipboardActionCut(target) {\n var selectedText = select_default()(target);\n command('cut');\n return selectedText;\n};\n\n/* harmony default export */ var actions_cut = (ClipboardActionCut);\n;// CONCATENATED MODULE: ./src/common/create-fake-element.js\n/**\n * Creates a fake textarea element with a value.\n * @param {String} value\n * @return {HTMLElement}\n */\nfunction createFakeElement(value) {\n var isRTL = document.documentElement.getAttribute('dir') === 'rtl';\n var fakeElement = document.createElement('textarea'); // Prevent zooming on iOS\n\n fakeElement.style.fontSize = '12pt'; // Reset box model\n\n fakeElement.style.border = '0';\n fakeElement.style.padding = '0';\n fakeElement.style.margin = '0'; // Move element out of screen horizontally\n\n fakeElement.style.position = 'absolute';\n fakeElement.style[isRTL ? 'right' : 'left'] = '-9999px'; // Move element to the same position vertically\n\n var yPosition = window.pageYOffset || document.documentElement.scrollTop;\n fakeElement.style.top = \"\".concat(yPosition, \"px\");\n fakeElement.setAttribute('readonly', '');\n fakeElement.value = value;\n return fakeElement;\n}\n;// CONCATENATED MODULE: ./src/actions/copy.js\n\n\n\n/**\n * Create fake copy action wrapper using a fake element.\n * @param {String} target\n * @param {Object} options\n * @return {String}\n */\n\nvar fakeCopyAction = function fakeCopyAction(value, options) {\n var fakeElement = createFakeElement(value);\n options.container.appendChild(fakeElement);\n var selectedText = select_default()(fakeElement);\n command('copy');\n fakeElement.remove();\n return selectedText;\n};\n/**\n * Copy action wrapper.\n * @param {String|HTMLElement} target\n * @param {Object} options\n * @return {String}\n */\n\n\nvar ClipboardActionCopy = function ClipboardActionCopy(target) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n container: document.body\n };\n var selectedText = '';\n\n if (typeof target === 'string') {\n selectedText = fakeCopyAction(target, options);\n } else if (target instanceof HTMLInputElement && !['text', 'search', 'url', 'tel', 'password'].includes(target === null || target === void 0 ? void 0 : target.type)) {\n // If input type doesn't support `setSelectionRange`. Simulate it. https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement/setSelectionRange\n selectedText = fakeCopyAction(target.value, options);\n } else {\n selectedText = select_default()(target);\n command('copy');\n }\n\n return selectedText;\n};\n\n/* harmony default export */ var actions_copy = (ClipboardActionCopy);\n;// CONCATENATED MODULE: ./src/actions/default.js\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\n\n\n/**\n * Inner function which performs selection from either `text` or `target`\n * properties and then executes copy or cut operations.\n * @param {Object} options\n */\n\nvar ClipboardActionDefault = function ClipboardActionDefault() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n // Defines base properties passed from constructor.\n var _options$action = options.action,\n action = _options$action === void 0 ? 'copy' : _options$action,\n container = options.container,\n target = options.target,\n text = options.text; // Sets the `action` to be performed which can be either 'copy' or 'cut'.\n\n if (action !== 'copy' && action !== 'cut') {\n throw new Error('Invalid \"action\" value, use either \"copy\" or \"cut\"');\n } // Sets the `target` property using an element that will be have its content copied.\n\n\n if (target !== undefined) {\n if (target && _typeof(target) === 'object' && target.nodeType === 1) {\n if (action === 'copy' && target.hasAttribute('disabled')) {\n throw new Error('Invalid \"target\" attribute. Please use \"readonly\" instead of \"disabled\" attribute');\n }\n\n if (action === 'cut' && (target.hasAttribute('readonly') || target.hasAttribute('disabled'))) {\n throw new Error('Invalid \"target\" attribute. You can\\'t cut text from elements with \"readonly\" or \"disabled\" attributes');\n }\n } else {\n throw new Error('Invalid \"target\" value, use a valid Element');\n }\n } // Define selection strategy based on `text` property.\n\n\n if (text) {\n return actions_copy(text, {\n container: container\n });\n } // Defines which selection strategy based on `target` property.\n\n\n if (target) {\n return action === 'cut' ? actions_cut(target) : actions_copy(target, {\n container: container\n });\n }\n};\n\n/* harmony default export */ var actions_default = (ClipboardActionDefault);\n;// CONCATENATED MODULE: ./src/clipboard.js\nfunction clipboard_typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { clipboard_typeof = function _typeof(obj) { return typeof obj; }; } else { clipboard_typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return clipboard_typeof(obj); }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (clipboard_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\n\n\n\n\n\n/**\n * Helper function to retrieve attribute value.\n * @param {String} suffix\n * @param {Element} element\n */\n\nfunction getAttributeValue(suffix, element) {\n var attribute = \"data-clipboard-\".concat(suffix);\n\n if (!element.hasAttribute(attribute)) {\n return;\n }\n\n return element.getAttribute(attribute);\n}\n/**\n * Base class which takes one or more elements, adds event listeners to them,\n * and instantiates a new `ClipboardAction` on each click.\n */\n\n\nvar Clipboard = /*#__PURE__*/function (_Emitter) {\n _inherits(Clipboard, _Emitter);\n\n var _super = _createSuper(Clipboard);\n\n /**\n * @param {String|HTMLElement|HTMLCollection|NodeList} trigger\n * @param {Object} options\n */\n function Clipboard(trigger, options) {\n var _this;\n\n _classCallCheck(this, Clipboard);\n\n _this = _super.call(this);\n\n _this.resolveOptions(options);\n\n _this.listenClick(trigger);\n\n return _this;\n }\n /**\n * Defines if attributes would be resolved using internal setter functions\n * or custom functions that were passed in the constructor.\n * @param {Object} options\n */\n\n\n _createClass(Clipboard, [{\n key: \"resolveOptions\",\n value: function resolveOptions() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n this.action = typeof options.action === 'function' ? options.action : this.defaultAction;\n this.target = typeof options.target === 'function' ? options.target : this.defaultTarget;\n this.text = typeof options.text === 'function' ? options.text : this.defaultText;\n this.container = clipboard_typeof(options.container) === 'object' ? options.container : document.body;\n }\n /**\n * Adds a click event listener to the passed trigger.\n * @param {String|HTMLElement|HTMLCollection|NodeList} trigger\n */\n\n }, {\n key: \"listenClick\",\n value: function listenClick(trigger) {\n var _this2 = this;\n\n this.listener = listen_default()(trigger, 'click', function (e) {\n return _this2.onClick(e);\n });\n }\n /**\n * Defines a new `ClipboardAction` on each click event.\n * @param {Event} e\n */\n\n }, {\n key: \"onClick\",\n value: function onClick(e) {\n var trigger = e.delegateTarget || e.currentTarget;\n var action = this.action(trigger) || 'copy';\n var text = actions_default({\n action: action,\n container: this.container,\n target: this.target(trigger),\n text: this.text(trigger)\n }); // Fires an event based on the copy operation result.\n\n this.emit(text ? 'success' : 'error', {\n action: action,\n text: text,\n trigger: trigger,\n clearSelection: function clearSelection() {\n if (trigger) {\n trigger.focus();\n }\n\n window.getSelection().removeAllRanges();\n }\n });\n }\n /**\n * Default `action` lookup function.\n * @param {Element} trigger\n */\n\n }, {\n key: \"defaultAction\",\n value: function defaultAction(trigger) {\n return getAttributeValue('action', trigger);\n }\n /**\n * Default `target` lookup function.\n * @param {Element} trigger\n */\n\n }, {\n key: \"defaultTarget\",\n value: function defaultTarget(trigger) {\n var selector = getAttributeValue('target', trigger);\n\n if (selector) {\n return document.querySelector(selector);\n }\n }\n /**\n * Allow fire programmatically a copy action\n * @param {String|HTMLElement} target\n * @param {Object} options\n * @returns Text copied.\n */\n\n }, {\n key: \"defaultText\",\n\n /**\n * Default `text` lookup function.\n * @param {Element} trigger\n */\n value: function defaultText(trigger) {\n return getAttributeValue('text', trigger);\n }\n /**\n * Destroy lifecycle.\n */\n\n }, {\n key: \"destroy\",\n value: function destroy() {\n this.listener.destroy();\n }\n }], [{\n key: \"copy\",\n value: function copy(target) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n container: document.body\n };\n return actions_copy(target, options);\n }\n /**\n * Allow fire programmatically a cut action\n * @param {String|HTMLElement} target\n * @returns Text cutted.\n */\n\n }, {\n key: \"cut\",\n value: function cut(target) {\n return actions_cut(target);\n }\n /**\n * Returns the support of the given action, or all actions if no action is\n * given.\n * @param {String} [action]\n */\n\n }, {\n key: \"isSupported\",\n value: function isSupported() {\n var action = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ['copy', 'cut'];\n var actions = typeof action === 'string' ? [action] : action;\n var support = !!document.queryCommandSupported;\n actions.forEach(function (action) {\n support = support && !!document.queryCommandSupported(action);\n });\n return support;\n }\n }]);\n\n return Clipboard;\n}((tiny_emitter_default()));\n\n/* harmony default export */ var clipboard = (Clipboard);\n\n/***/ }),\n\n/***/ 828:\n/***/ (function(module) {\n\nvar DOCUMENT_NODE_TYPE = 9;\n\n/**\n * A polyfill for Element.matches()\n */\nif (typeof Element !== 'undefined' && !Element.prototype.matches) {\n var proto = Element.prototype;\n\n proto.matches = proto.matchesSelector ||\n proto.mozMatchesSelector ||\n proto.msMatchesSelector ||\n proto.oMatchesSelector ||\n proto.webkitMatchesSelector;\n}\n\n/**\n * Finds the closest parent that matches a selector.\n *\n * @param {Element} element\n * @param {String} selector\n * @return {Function}\n */\nfunction closest (element, selector) {\n while (element && element.nodeType !== DOCUMENT_NODE_TYPE) {\n if (typeof element.matches === 'function' &&\n element.matches(selector)) {\n return element;\n }\n element = element.parentNode;\n }\n}\n\nmodule.exports = closest;\n\n\n/***/ }),\n\n/***/ 438:\n/***/ (function(module, __unused_webpack_exports, __webpack_require__) {\n\nvar closest = __webpack_require__(828);\n\n/**\n * Delegates event to a selector.\n *\n * @param {Element} element\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @param {Boolean} useCapture\n * @return {Object}\n */\nfunction _delegate(element, selector, type, callback, useCapture) {\n var listenerFn = listener.apply(this, arguments);\n\n element.addEventListener(type, listenerFn, useCapture);\n\n return {\n destroy: function() {\n element.removeEventListener(type, listenerFn, useCapture);\n }\n }\n}\n\n/**\n * Delegates event to a selector.\n *\n * @param {Element|String|Array} [elements]\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @param {Boolean} useCapture\n * @return {Object}\n */\nfunction delegate(elements, selector, type, callback, useCapture) {\n // Handle the regular Element usage\n if (typeof elements.addEventListener === 'function') {\n return _delegate.apply(null, arguments);\n }\n\n // Handle Element-less usage, it defaults to global delegation\n if (typeof type === 'function') {\n // Use `document` as the first parameter, then apply arguments\n // This is a short way to .unshift `arguments` without running into deoptimizations\n return _delegate.bind(null, document).apply(null, arguments);\n }\n\n // Handle Selector-based usage\n if (typeof elements === 'string') {\n elements = document.querySelectorAll(elements);\n }\n\n // Handle Array-like based usage\n return Array.prototype.map.call(elements, function (element) {\n return _delegate(element, selector, type, callback, useCapture);\n });\n}\n\n/**\n * Finds closest match and invokes callback.\n *\n * @param {Element} element\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @return {Function}\n */\nfunction listener(element, selector, type, callback) {\n return function(e) {\n e.delegateTarget = closest(e.target, selector);\n\n if (e.delegateTarget) {\n callback.call(element, e);\n }\n }\n}\n\nmodule.exports = delegate;\n\n\n/***/ }),\n\n/***/ 879:\n/***/ (function(__unused_webpack_module, exports) {\n\n/**\n * Check if argument is a HTML element.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.node = function(value) {\n return value !== undefined\n && value instanceof HTMLElement\n && value.nodeType === 1;\n};\n\n/**\n * Check if argument is a list of HTML elements.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.nodeList = function(value) {\n var type = Object.prototype.toString.call(value);\n\n return value !== undefined\n && (type === '[object NodeList]' || type === '[object HTMLCollection]')\n && ('length' in value)\n && (value.length === 0 || exports.node(value[0]));\n};\n\n/**\n * Check if argument is a string.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.string = function(value) {\n return typeof value === 'string'\n || value instanceof String;\n};\n\n/**\n * Check if argument is a function.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.fn = function(value) {\n var type = Object.prototype.toString.call(value);\n\n return type === '[object Function]';\n};\n\n\n/***/ }),\n\n/***/ 370:\n/***/ (function(module, __unused_webpack_exports, __webpack_require__) {\n\nvar is = __webpack_require__(879);\nvar delegate = __webpack_require__(438);\n\n/**\n * Validates all params and calls the right\n * listener function based on its target type.\n *\n * @param {String|HTMLElement|HTMLCollection|NodeList} target\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listen(target, type, callback) {\n if (!target && !type && !callback) {\n throw new Error('Missing required arguments');\n }\n\n if (!is.string(type)) {\n throw new TypeError('Second argument must be a String');\n }\n\n if (!is.fn(callback)) {\n throw new TypeError('Third argument must be a Function');\n }\n\n if (is.node(target)) {\n return listenNode(target, type, callback);\n }\n else if (is.nodeList(target)) {\n return listenNodeList(target, type, callback);\n }\n else if (is.string(target)) {\n return listenSelector(target, type, callback);\n }\n else {\n throw new TypeError('First argument must be a String, HTMLElement, HTMLCollection, or NodeList');\n }\n}\n\n/**\n * Adds an event listener to a HTML element\n * and returns a remove listener function.\n *\n * @param {HTMLElement} node\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenNode(node, type, callback) {\n node.addEventListener(type, callback);\n\n return {\n destroy: function() {\n node.removeEventListener(type, callback);\n }\n }\n}\n\n/**\n * Add an event listener to a list of HTML elements\n * and returns a remove listener function.\n *\n * @param {NodeList|HTMLCollection} nodeList\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenNodeList(nodeList, type, callback) {\n Array.prototype.forEach.call(nodeList, function(node) {\n node.addEventListener(type, callback);\n });\n\n return {\n destroy: function() {\n Array.prototype.forEach.call(nodeList, function(node) {\n node.removeEventListener(type, callback);\n });\n }\n }\n}\n\n/**\n * Add an event listener to a selector\n * and returns a remove listener function.\n *\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenSelector(selector, type, callback) {\n return delegate(document.body, selector, type, callback);\n}\n\nmodule.exports = listen;\n\n\n/***/ }),\n\n/***/ 817:\n/***/ (function(module) {\n\nfunction select(element) {\n var selectedText;\n\n if (element.nodeName === 'SELECT') {\n element.focus();\n\n selectedText = element.value;\n }\n else if (element.nodeName === 'INPUT' || element.nodeName === 'TEXTAREA') {\n var isReadOnly = element.hasAttribute('readonly');\n\n if (!isReadOnly) {\n element.setAttribute('readonly', '');\n }\n\n element.select();\n element.setSelectionRange(0, element.value.length);\n\n if (!isReadOnly) {\n element.removeAttribute('readonly');\n }\n\n selectedText = element.value;\n }\n else {\n if (element.hasAttribute('contenteditable')) {\n element.focus();\n }\n\n var selection = window.getSelection();\n var range = document.createRange();\n\n range.selectNodeContents(element);\n selection.removeAllRanges();\n selection.addRange(range);\n\n selectedText = selection.toString();\n }\n\n return selectedText;\n}\n\nmodule.exports = select;\n\n\n/***/ }),\n\n/***/ 279:\n/***/ (function(module) {\n\nfunction E () {\n // Keep this empty so it's easier to inherit from\n // (via https://github.com/lipsmack from https://github.com/scottcorgan/tiny-emitter/issues/3)\n}\n\nE.prototype = {\n on: function (name, callback, ctx) {\n var e = this.e || (this.e = {});\n\n (e[name] || (e[name] = [])).push({\n fn: callback,\n ctx: ctx\n });\n\n return this;\n },\n\n once: function (name, callback, ctx) {\n var self = this;\n function listener () {\n self.off(name, listener);\n callback.apply(ctx, arguments);\n };\n\n listener._ = callback\n return this.on(name, listener, ctx);\n },\n\n emit: function (name) {\n var data = [].slice.call(arguments, 1);\n var evtArr = ((this.e || (this.e = {}))[name] || []).slice();\n var i = 0;\n var len = evtArr.length;\n\n for (i; i < len; i++) {\n evtArr[i].fn.apply(evtArr[i].ctx, data);\n }\n\n return this;\n },\n\n off: function (name, callback) {\n var e = this.e || (this.e = {});\n var evts = e[name];\n var liveEvents = [];\n\n if (evts && callback) {\n for (var i = 0, len = evts.length; i < len; i++) {\n if (evts[i].fn !== callback && evts[i].fn._ !== callback)\n liveEvents.push(evts[i]);\n }\n }\n\n // Remove event from queue to prevent memory leak\n // Suggested by https://github.com/lazd\n // Ref: https://github.com/scottcorgan/tiny-emitter/commit/c6ebfaa9bc973b33d110a84a307742b7cf94c953#commitcomment-5024910\n\n (liveEvents.length)\n ? e[name] = liveEvents\n : delete e[name];\n\n return this;\n }\n};\n\nmodule.exports = E;\nmodule.exports.TinyEmitter = E;\n\n\n/***/ })\n\n/******/ \t});\n/************************************************************************/\n/******/ \t// The module cache\n/******/ \tvar __webpack_module_cache__ = {};\n/******/ \t\n/******/ \t// The require function\n/******/ \tfunction __webpack_require__(moduleId) {\n/******/ \t\t// Check if module is in cache\n/******/ \t\tif(__webpack_module_cache__[moduleId]) {\n/******/ \t\t\treturn __webpack_module_cache__[moduleId].exports;\n/******/ \t\t}\n/******/ \t\t// Create a new module (and put it into the cache)\n/******/ \t\tvar module = __webpack_module_cache__[moduleId] = {\n/******/ \t\t\t// no module.id needed\n/******/ \t\t\t// no module.loaded needed\n/******/ \t\t\texports: {}\n/******/ \t\t};\n/******/ \t\n/******/ \t\t// Execute the module function\n/******/ \t\t__webpack_modules__[moduleId](module, module.exports, __webpack_require__);\n/******/ \t\n/******/ \t\t// Return the exports of the module\n/******/ \t\treturn module.exports;\n/******/ \t}\n/******/ \t\n/************************************************************************/\n/******/ \t/* webpack/runtime/compat get default export */\n/******/ \t!function() {\n/******/ \t\t// getDefaultExport function for compatibility with non-harmony modules\n/******/ \t\t__webpack_require__.n = function(module) {\n/******/ \t\t\tvar getter = module && module.__esModule ?\n/******/ \t\t\t\tfunction() { return module['default']; } :\n/******/ \t\t\t\tfunction() { return module; };\n/******/ \t\t\t__webpack_require__.d(getter, { a: getter });\n/******/ \t\t\treturn getter;\n/******/ \t\t};\n/******/ \t}();\n/******/ \t\n/******/ \t/* webpack/runtime/define property getters */\n/******/ \t!function() {\n/******/ \t\t// define getter functions for harmony exports\n/******/ \t\t__webpack_require__.d = function(exports, definition) {\n/******/ \t\t\tfor(var key in definition) {\n/******/ \t\t\t\tif(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {\n/******/ \t\t\t\t\tObject.defineProperty(exports, key, { enumerable: true, get: definition[key] });\n/******/ \t\t\t\t}\n/******/ \t\t\t}\n/******/ \t\t};\n/******/ \t}();\n/******/ \t\n/******/ \t/* webpack/runtime/hasOwnProperty shorthand */\n/******/ \t!function() {\n/******/ \t\t__webpack_require__.o = function(obj, prop) { return Object.prototype.hasOwnProperty.call(obj, prop); }\n/******/ \t}();\n/******/ \t\n/************************************************************************/\n/******/ \t// module exports must be returned from runtime so entry inlining is disabled\n/******/ \t// startup\n/******/ \t// Load entry module and return exports\n/******/ \treturn __webpack_require__(686);\n/******/ })()\n.default;\n});", "/*\n * Copyright (c) 2016-2024 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport \"focus-visible\"\n\nimport {\n EMPTY,\n NEVER,\n Observable,\n Subject,\n defer,\n delay,\n filter,\n map,\n merge,\n mergeWith,\n shareReplay,\n switchMap\n} from \"rxjs\"\n\nimport { configuration, feature } from \"./_\"\nimport {\n at,\n getActiveElement,\n getOptionalElement,\n requestJSON,\n setLocation,\n setToggle,\n watchDocument,\n watchKeyboard,\n watchLocation,\n watchLocationTarget,\n watchMedia,\n watchPrint,\n watchScript,\n watchViewport\n} from \"./browser\"\nimport {\n getComponentElement,\n getComponentElements,\n mountAnnounce,\n mountBackToTop,\n mountConsent,\n mountContent,\n mountDialog,\n mountHeader,\n mountHeaderTitle,\n mountPalette,\n mountProgress,\n mountSearch,\n mountSearchHiglight,\n mountSidebar,\n mountSource,\n mountTableOfContents,\n mountTabs,\n watchHeader,\n watchMain\n} from \"./components\"\nimport {\n SearchIndex,\n setupClipboardJS,\n setupInstantNavigation,\n setupVersionSelector\n} from \"./integrations\"\nimport {\n patchEllipsis,\n patchIndeterminate,\n patchScrollfix,\n patchScrolllock\n} from \"./patches\"\nimport \"./polyfills\"\n\n/* ----------------------------------------------------------------------------\n * Functions - @todo refactor\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch search index\n *\n * @returns Search index observable\n */\nfunction fetchSearchIndex(): Observable {\n if (location.protocol === \"file:\") {\n return watchScript(\n `${new URL(\"search/search_index.js\", config.base)}`\n )\n .pipe(\n // @ts-ignore - @todo fix typings\n map(() => __index),\n shareReplay(1)\n )\n } else {\n return requestJSON(\n new URL(\"search/search_index.json\", config.base)\n )\n }\n}\n\n/* ----------------------------------------------------------------------------\n * Application\n * ------------------------------------------------------------------------- */\n\n/* Yay, JavaScript is available */\ndocument.documentElement.classList.remove(\"no-js\")\ndocument.documentElement.classList.add(\"js\")\n\n/* Set up navigation observables and subjects */\nconst document$ = watchDocument()\nconst location$ = watchLocation()\nconst target$ = watchLocationTarget(location$)\nconst keyboard$ = watchKeyboard()\n\n/* Set up media observables */\nconst viewport$ = watchViewport()\nconst tablet$ = watchMedia(\"(min-width: 960px)\")\nconst screen$ = watchMedia(\"(min-width: 1220px)\")\nconst print$ = watchPrint()\n\n/* Retrieve search index, if search is enabled */\nconst config = configuration()\nconst index$ = document.forms.namedItem(\"search\")\n ? fetchSearchIndex()\n : NEVER\n\n/* Set up Clipboard.js integration */\nconst alert$ = new Subject()\nsetupClipboardJS({ alert$ })\n\n/* Set up progress indicator */\nconst progress$ = new Subject()\n\n/* Set up instant navigation, if enabled */\nif (feature(\"navigation.instant\"))\n setupInstantNavigation({ location$, viewport$, progress$ })\n .subscribe(document$)\n\n/* Set up version selector */\nif (config.version?.provider === \"mike\")\n setupVersionSelector({ document$ })\n\n/* Always close drawer and search on navigation */\nmerge(location$, target$)\n .pipe(\n delay(125)\n )\n .subscribe(() => {\n setToggle(\"drawer\", false)\n setToggle(\"search\", false)\n })\n\n/* Set up global keyboard handlers */\nkeyboard$\n .pipe(\n filter(({ mode }) => mode === \"global\")\n )\n .subscribe(key => {\n switch (key.type) {\n\n /* Go to previous page */\n case \"p\":\n case \",\":\n const prev = getOptionalElement(\"link[rel=prev]\")\n if (typeof prev !== \"undefined\")\n setLocation(prev)\n break\n\n /* Go to next page */\n case \"n\":\n case \".\":\n const next = getOptionalElement(\"link[rel=next]\")\n if (typeof next !== \"undefined\")\n setLocation(next)\n break\n\n /* Expand navigation, see https://bit.ly/3ZjG5io */\n case \"Enter\":\n const active = getActiveElement()\n if (active instanceof HTMLLabelElement)\n active.click()\n }\n })\n\n/* Set up patches */\npatchEllipsis({ viewport$, document$ })\npatchIndeterminate({ document$, tablet$ })\npatchScrollfix({ document$ })\npatchScrolllock({ viewport$, tablet$ })\n\n/* Set up header and main area observable */\nconst header$ = watchHeader(getComponentElement(\"header\"), { viewport$ })\nconst main$ = document$\n .pipe(\n map(() => getComponentElement(\"main\")),\n switchMap(el => watchMain(el, { viewport$, header$ })),\n shareReplay(1)\n )\n\n/* Set up control component observables */\nconst control$ = merge(\n\n /* Consent */\n ...getComponentElements(\"consent\")\n .map(el => mountConsent(el, { target$ })),\n\n /* Dialog */\n ...getComponentElements(\"dialog\")\n .map(el => mountDialog(el, { alert$ })),\n\n /* Header */\n ...getComponentElements(\"header\")\n .map(el => mountHeader(el, { viewport$, header$, main$ })),\n\n /* Color palette */\n ...getComponentElements(\"palette\")\n .map(el => mountPalette(el)),\n\n /* Progress bar */\n ...getComponentElements(\"progress\")\n .map(el => mountProgress(el, { progress$ })),\n\n /* Search */\n ...getComponentElements(\"search\")\n .map(el => mountSearch(el, { index$, keyboard$ })),\n\n /* Repository information */\n ...getComponentElements(\"source\")\n .map(el => mountSource(el))\n)\n\n/* Set up content component observables */\nconst content$ = defer(() => merge(\n\n /* Announcement bar */\n ...getComponentElements(\"announce\")\n .map(el => mountAnnounce(el)),\n\n /* Content */\n ...getComponentElements(\"content\")\n .map(el => mountContent(el, { viewport$, target$, print$ })),\n\n /* Search highlighting */\n ...getComponentElements(\"content\")\n .map(el => feature(\"search.highlight\")\n ? mountSearchHiglight(el, { index$, location$ })\n : EMPTY\n ),\n\n /* Header title */\n ...getComponentElements(\"header-title\")\n .map(el => mountHeaderTitle(el, { viewport$, header$ })),\n\n /* Sidebar */\n ...getComponentElements(\"sidebar\")\n .map(el => el.getAttribute(\"data-md-type\") === \"navigation\"\n ? at(screen$, () => mountSidebar(el, { viewport$, header$, main$ }))\n : at(tablet$, () => mountSidebar(el, { viewport$, header$, main$ }))\n ),\n\n /* Navigation tabs */\n ...getComponentElements(\"tabs\")\n .map(el => mountTabs(el, { viewport$, header$ })),\n\n /* Table of contents */\n ...getComponentElements(\"toc\")\n .map(el => mountTableOfContents(el, {\n viewport$, header$, main$, target$\n })),\n\n /* Back-to-top button */\n ...getComponentElements(\"top\")\n .map(el => mountBackToTop(el, { viewport$, header$, main$, target$ }))\n))\n\n/* Set up component observables */\nconst component$ = document$\n .pipe(\n switchMap(() => content$),\n mergeWith(control$),\n shareReplay(1)\n )\n\n/* Subscribe to all components */\ncomponent$.subscribe()\n\n/* ----------------------------------------------------------------------------\n * Exports\n * ------------------------------------------------------------------------- */\n\nwindow.document$ = document$ /* Document observable */\nwindow.location$ = location$ /* Location subject */\nwindow.target$ = target$ /* Location target observable */\nwindow.keyboard$ = keyboard$ /* Keyboard observable */\nwindow.viewport$ = viewport$ /* Viewport observable */\nwindow.tablet$ = tablet$ /* Media tablet observable */\nwindow.screen$ = screen$ /* Media screen observable */\nwindow.print$ = print$ /* Media print observable */\nwindow.alert$ = alert$ /* Alert subject */\nwindow.progress$ = progress$ /* Progress indicator subject */\nwindow.component$ = component$ /* Component observable */\n", "/******************************************************************************\nCopyright (c) Microsoft Corporation.\n\nPermission to use, copy, modify, and/or distribute this software for any\npurpose with or without fee is hereby granted.\n\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\nPERFORMANCE OF THIS SOFTWARE.\n***************************************************************************** */\n/* global Reflect, Promise, SuppressedError, Symbol, Iterator */\n\nvar extendStatics = function(d, b) {\n extendStatics = Object.setPrototypeOf ||\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\n return extendStatics(d, b);\n};\n\nexport function __extends(d, b) {\n if (typeof b !== \"function\" && b !== null)\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\n extendStatics(d, b);\n function __() { this.constructor = d; }\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n}\n\nexport var __assign = function() {\n __assign = Object.assign || function __assign(t) {\n for (var s, i = 1, n = arguments.length; i < n; i++) {\n s = arguments[i];\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\n }\n return t;\n }\n return __assign.apply(this, arguments);\n}\n\nexport function __rest(s, e) {\n var t = {};\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\n t[p] = s[p];\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\n t[p[i]] = s[p[i]];\n }\n return t;\n}\n\nexport function __decorate(decorators, target, key, desc) {\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\n return c > 3 && r && Object.defineProperty(target, key, r), r;\n}\n\nexport function __param(paramIndex, decorator) {\n return function (target, key) { decorator(target, key, paramIndex); }\n}\n\nexport function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {\n function accept(f) { if (f !== void 0 && typeof f !== \"function\") throw new TypeError(\"Function expected\"); return f; }\n var kind = contextIn.kind, key = kind === \"getter\" ? \"get\" : kind === \"setter\" ? \"set\" : \"value\";\n var target = !descriptorIn && ctor ? contextIn[\"static\"] ? ctor : ctor.prototype : null;\n var descriptor = descriptorIn || (target ? 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(function(o, m, k, k2) {\n if (k2 === undefined) k2 = k;\n var desc = Object.getOwnPropertyDescriptor(m, k);\n if (!desc || (\"get\" in desc ? !m.__esModule : desc.writable || desc.configurable)) {\n desc = { enumerable: true, get: function() { return m[k]; } };\n }\n Object.defineProperty(o, k2, desc);\n}) : (function(o, m, k, k2) {\n if (k2 === undefined) k2 = k;\n o[k2] = m[k];\n});\n\nexport function __exportStar(m, o) {\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\n}\n\nexport function __values(o) {\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\n if (m) return m.call(o);\n if (o && typeof o.length === \"number\") return {\n next: function () {\n if (o && i >= o.length) o = void 0;\n return { value: o && o[i++], done: !o };\n }\n };\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\n}\n\nexport function __read(o, n) {\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\n if (!m) return o;\n var i = m.call(o), r, ar = [], e;\n try {\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\n }\n catch (error) { e = { error: error }; }\n finally {\n try {\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\n }\n finally { if (e) throw e.error; }\n }\n return ar;\n}\n\n/** @deprecated */\nexport function __spread() {\n for (var ar = [], i = 0; i < arguments.length; i++)\n ar = ar.concat(__read(arguments[i]));\n return ar;\n}\n\n/** @deprecated */\nexport function __spreadArrays() {\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\n r[k] = a[j];\n return r;\n}\n\nexport function __spreadArray(to, from, pack) {\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\n if (ar || !(i in from)) {\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\n ar[i] = from[i];\n }\n }\n return to.concat(ar || Array.prototype.slice.call(from));\n}\n\nexport function __await(v) {\n return this instanceof __await ? (this.v = v, this) : new __await(v);\n}\n\nexport function __asyncGenerator(thisArg, _arguments, generator) {\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\n return i = Object.create((typeof AsyncIterator === \"function\" ? AsyncIterator : Object).prototype), verb(\"next\"), verb(\"throw\"), verb(\"return\", awaitReturn), i[Symbol.asyncIterator] = function () { return this; }, i;\n function awaitReturn(f) { return function (v) { return Promise.resolve(v).then(f, reject); }; }\n function verb(n, f) { if (g[n]) { i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; if (f) i[n] = f(i[n]); } }\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\n function fulfill(value) { resume(\"next\", value); }\n function reject(value) { resume(\"throw\", value); }\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\n}\n\nexport function __asyncDelegator(o) {\n var i, p;\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }\n}\n\nexport function __asyncValues(o) {\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\n var m = o[Symbol.asyncIterator], i;\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\n}\n\nexport function __makeTemplateObject(cooked, raw) {\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\n return cooked;\n};\n\nvar __setModuleDefault = Object.create ? (function(o, v) {\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\n}) : function(o, v) {\n o[\"default\"] = v;\n};\n\nexport function __importStar(mod) {\n if (mod && mod.__esModule) return mod;\n var result = {};\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\n __setModuleDefault(result, mod);\n return result;\n}\n\nexport function __importDefault(mod) {\n return (mod && mod.__esModule) ? mod : { default: mod };\n}\n\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\n}\n\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\n}\n\nexport function __classPrivateFieldIn(state, receiver) {\n if (receiver === null || (typeof receiver !== \"object\" && typeof receiver !== \"function\")) throw new TypeError(\"Cannot use 'in' operator on non-object\");\n return typeof state === \"function\" ? receiver === state : state.has(receiver);\n}\n\nexport function __addDisposableResource(env, value, async) {\n if (value !== null && value !== void 0) {\n if (typeof value !== \"object\" && typeof value !== \"function\") throw new TypeError(\"Object expected.\");\n var dispose, inner;\n if (async) {\n if (!Symbol.asyncDispose) throw new TypeError(\"Symbol.asyncDispose is not defined.\");\n dispose = value[Symbol.asyncDispose];\n }\n if (dispose === void 0) {\n if (!Symbol.dispose) throw new TypeError(\"Symbol.dispose is not defined.\");\n dispose = value[Symbol.dispose];\n if (async) inner = dispose;\n }\n if (typeof dispose !== \"function\") throw new TypeError(\"Object not disposable.\");\n if (inner) dispose = function() { try { inner.call(this); } catch (e) { return Promise.reject(e); } };\n env.stack.push({ value: value, dispose: dispose, async: async });\n }\n else if (async) {\n env.stack.push({ async: true });\n }\n return value;\n}\n\nvar _SuppressedError = typeof SuppressedError === \"function\" ? SuppressedError : function (error, suppressed, message) {\n var e = new Error(message);\n return e.name = \"SuppressedError\", e.error = error, e.suppressed = suppressed, e;\n};\n\nexport function __disposeResources(env) {\n function fail(e) {\n env.error = env.hasError ? new _SuppressedError(e, env.error, \"An error was suppressed during disposal.\") : e;\n env.hasError = true;\n }\n var r, s = 0;\n function next() {\n while (r = env.stack.pop()) {\n try {\n if (!r.async && s === 1) return s = 0, env.stack.push(r), Promise.resolve().then(next);\n if (r.dispose) {\n var result = r.dispose.call(r.value);\n if (r.async) return s |= 2, Promise.resolve(result).then(next, function(e) { fail(e); return next(); });\n }\n else s |= 1;\n }\n catch (e) {\n fail(e);\n }\n }\n if (s === 1) return env.hasError ? Promise.reject(env.error) : Promise.resolve();\n if (env.hasError) throw env.error;\n }\n return next();\n}\n\nexport default {\n __extends,\n __assign,\n __rest,\n __decorate,\n __param,\n __metadata,\n __awaiter,\n __generator,\n __createBinding,\n __exportStar,\n __values,\n __read,\n __spread,\n __spreadArrays,\n __spreadArray,\n __await,\n __asyncGenerator,\n __asyncDelegator,\n __asyncValues,\n __makeTemplateObject,\n __importStar,\n __importDefault,\n __classPrivateFieldGet,\n __classPrivateFieldSet,\n __classPrivateFieldIn,\n __addDisposableResource,\n __disposeResources,\n};\n", "/**\n * Returns true if the object is a function.\n * @param value The value to check\n */\nexport function isFunction(value: any): value is (...args: any[]) => any {\n return typeof value === 'function';\n}\n", "/**\n * Used to create Error subclasses until the community moves away from ES5.\n *\n * This is because compiling from TypeScript down to ES5 has issues with subclassing Errors\n * as well as other built-in types: https://github.com/Microsoft/TypeScript/issues/12123\n *\n * @param createImpl A factory function to create the actual constructor implementation. The returned\n * function should be a named function that calls `_super` internally.\n */\nexport function createErrorClass(createImpl: (_super: any) => any): T {\n const _super = (instance: any) => {\n Error.call(instance);\n instance.stack = new Error().stack;\n };\n\n const ctorFunc = createImpl(_super);\n ctorFunc.prototype = Object.create(Error.prototype);\n ctorFunc.prototype.constructor = ctorFunc;\n return ctorFunc;\n}\n", "import { createErrorClass } from './createErrorClass';\n\nexport interface UnsubscriptionError extends Error {\n readonly errors: any[];\n}\n\nexport interface UnsubscriptionErrorCtor {\n /**\n * @deprecated Internal implementation detail. Do not construct error instances.\n * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269\n */\n new (errors: any[]): UnsubscriptionError;\n}\n\n/**\n * An error thrown when one or more errors have occurred during the\n * `unsubscribe` of a {@link Subscription}.\n */\nexport const UnsubscriptionError: UnsubscriptionErrorCtor = createErrorClass(\n (_super) =>\n function UnsubscriptionErrorImpl(this: any, errors: (Error | string)[]) {\n _super(this);\n this.message = errors\n ? `${errors.length} errors occurred during unsubscription:\n${errors.map((err, i) => `${i + 1}) ${err.toString()}`).join('\\n ')}`\n : '';\n this.name = 'UnsubscriptionError';\n this.errors = errors;\n }\n);\n", "/**\n * Removes an item from an array, mutating it.\n * @param arr The array to remove the item from\n * @param item The item to remove\n */\nexport function arrRemove(arr: T[] | undefined | null, item: T) {\n if (arr) {\n const index = arr.indexOf(item);\n 0 <= index && arr.splice(index, 1);\n }\n}\n", "import { isFunction } from './util/isFunction';\nimport { UnsubscriptionError } from './util/UnsubscriptionError';\nimport { SubscriptionLike, TeardownLogic, Unsubscribable } from './types';\nimport { arrRemove } from './util/arrRemove';\n\n/**\n * Represents a disposable resource, such as the execution of an Observable. A\n * Subscription has one important method, `unsubscribe`, that takes no argument\n * and just disposes the resource held by the subscription.\n *\n * Additionally, subscriptions may be grouped together through the `add()`\n * method, which will attach a child Subscription to the current Subscription.\n * When a Subscription is unsubscribed, all its children (and its grandchildren)\n * will be unsubscribed as well.\n *\n * @class Subscription\n */\nexport class Subscription implements SubscriptionLike {\n /** @nocollapse */\n public static EMPTY = (() => {\n const empty = new Subscription();\n empty.closed = true;\n return empty;\n })();\n\n /**\n * A flag to indicate whether this Subscription has already been unsubscribed.\n */\n public closed = false;\n\n private _parentage: Subscription[] | Subscription | null = null;\n\n /**\n * The list of registered finalizers to execute upon unsubscription. Adding and removing from this\n * list occurs in the {@link #add} and {@link #remove} methods.\n */\n private _finalizers: Exclude[] | null = null;\n\n /**\n * @param initialTeardown A function executed first as part of the finalization\n * process that is kicked off when {@link #unsubscribe} is called.\n */\n constructor(private initialTeardown?: () => void) {}\n\n /**\n * Disposes the resources held by the subscription. May, for instance, cancel\n * an ongoing Observable execution or cancel any other type of work that\n * started when the Subscription was created.\n * @return {void}\n */\n unsubscribe(): void {\n let errors: any[] | undefined;\n\n if (!this.closed) {\n this.closed = true;\n\n // Remove this from it's parents.\n const { _parentage } = this;\n if (_parentage) {\n this._parentage = null;\n if (Array.isArray(_parentage)) {\n for (const parent of _parentage) {\n parent.remove(this);\n }\n } else {\n _parentage.remove(this);\n }\n }\n\n const { initialTeardown: initialFinalizer } = this;\n if (isFunction(initialFinalizer)) {\n try {\n initialFinalizer();\n } catch (e) {\n errors = e instanceof UnsubscriptionError ? e.errors : [e];\n }\n }\n\n const { _finalizers } = this;\n if (_finalizers) {\n this._finalizers = null;\n for (const finalizer of _finalizers) {\n try {\n execFinalizer(finalizer);\n } catch (err) {\n errors = errors ?? [];\n if (err instanceof UnsubscriptionError) {\n errors = [...errors, ...err.errors];\n } else {\n errors.push(err);\n }\n }\n }\n }\n\n if (errors) {\n throw new UnsubscriptionError(errors);\n }\n }\n }\n\n /**\n * Adds a finalizer to this subscription, so that finalization will be unsubscribed/called\n * when this subscription is unsubscribed. If this subscription is already {@link #closed},\n * because it has already been unsubscribed, then whatever finalizer is passed to it\n * will automatically be executed (unless the finalizer itself is also a closed subscription).\n *\n * Closed Subscriptions cannot be added as finalizers to any subscription. Adding a closed\n * subscription to a any subscription will result in no operation. (A noop).\n *\n * Adding a subscription to itself, or adding `null` or `undefined` will not perform any\n * operation at all. (A noop).\n *\n * `Subscription` instances that are added to this instance will automatically remove themselves\n * if they are unsubscribed. Functions and {@link Unsubscribable} objects that you wish to remove\n * will need to be removed manually with {@link #remove}\n *\n * @param teardown The finalization logic to add to this subscription.\n */\n add(teardown: TeardownLogic): void {\n // Only add the finalizer if it's not undefined\n // and don't add a subscription to itself.\n if (teardown && teardown !== this) {\n if (this.closed) {\n // If this subscription is already closed,\n // execute whatever finalizer is handed to it automatically.\n execFinalizer(teardown);\n } else {\n if (teardown instanceof Subscription) {\n // We don't add closed subscriptions, and we don't add the same subscription\n // twice. Subscription unsubscribe is idempotent.\n if (teardown.closed || teardown._hasParent(this)) {\n return;\n }\n teardown._addParent(this);\n }\n (this._finalizers = this._finalizers ?? []).push(teardown);\n }\n }\n }\n\n /**\n * Checks to see if a this subscription already has a particular parent.\n * This will signal that this subscription has already been added to the parent in question.\n * @param parent the parent to check for\n */\n private _hasParent(parent: Subscription) {\n const { _parentage } = this;\n return _parentage === parent || (Array.isArray(_parentage) && _parentage.includes(parent));\n }\n\n /**\n * Adds a parent to this subscription so it can be removed from the parent if it\n * unsubscribes on it's own.\n *\n * NOTE: THIS ASSUMES THAT {@link _hasParent} HAS ALREADY BEEN CHECKED.\n * @param parent The parent subscription to add\n */\n private _addParent(parent: Subscription) {\n const { _parentage } = this;\n this._parentage = Array.isArray(_parentage) ? (_parentage.push(parent), _parentage) : _parentage ? [_parentage, parent] : parent;\n }\n\n /**\n * Called on a child when it is removed via {@link #remove}.\n * @param parent The parent to remove\n */\n private _removeParent(parent: Subscription) {\n const { _parentage } = this;\n if (_parentage === parent) {\n this._parentage = null;\n } else if (Array.isArray(_parentage)) {\n arrRemove(_parentage, parent);\n }\n }\n\n /**\n * Removes a finalizer from this subscription that was previously added with the {@link #add} method.\n *\n * Note that `Subscription` instances, when unsubscribed, will automatically remove themselves\n * from every other `Subscription` they have been added to. This means that using the `remove` method\n * is not a common thing and should be used thoughtfully.\n *\n * If you add the same finalizer instance of a function or an unsubscribable object to a `Subscription` instance\n * more than once, you will need to call `remove` the same number of times to remove all instances.\n *\n * All finalizer instances are removed to free up memory upon unsubscription.\n *\n * @param teardown The finalizer to remove from this subscription\n */\n remove(teardown: Exclude): void {\n const { _finalizers } = this;\n _finalizers && arrRemove(_finalizers, teardown);\n\n if (teardown instanceof Subscription) {\n teardown._removeParent(this);\n }\n }\n}\n\nexport const EMPTY_SUBSCRIPTION = Subscription.EMPTY;\n\nexport function isSubscription(value: any): value is Subscription {\n return (\n value instanceof Subscription ||\n (value && 'closed' in value && isFunction(value.remove) && isFunction(value.add) && isFunction(value.unsubscribe))\n );\n}\n\nfunction execFinalizer(finalizer: Unsubscribable | (() => void)) {\n if (isFunction(finalizer)) {\n finalizer();\n } else {\n finalizer.unsubscribe();\n }\n}\n", "import { Subscriber } from './Subscriber';\nimport { ObservableNotification } from './types';\n\n/**\n * The {@link GlobalConfig} object for RxJS. It is used to configure things\n * like how to react on unhandled errors.\n */\nexport const config: GlobalConfig = {\n onUnhandledError: null,\n onStoppedNotification: null,\n Promise: undefined,\n useDeprecatedSynchronousErrorHandling: false,\n useDeprecatedNextContext: false,\n};\n\n/**\n * The global configuration object for RxJS, used to configure things\n * like how to react on unhandled errors. Accessible via {@link config}\n * object.\n */\nexport interface GlobalConfig {\n /**\n * A registration point for unhandled errors from RxJS. These are errors that\n * cannot were not handled by consuming code in the usual subscription path. For\n * example, if you have this configured, and you subscribe to an observable without\n * providing an error handler, errors from that subscription will end up here. This\n * will _always_ be called asynchronously on another job in the runtime. This is because\n * we do not want errors thrown in this user-configured handler to interfere with the\n * behavior of the library.\n */\n onUnhandledError: ((err: any) => void) | null;\n\n /**\n * A registration point for notifications that cannot be sent to subscribers because they\n * have completed, errored or have been explicitly unsubscribed. By default, next, complete\n * and error notifications sent to stopped subscribers are noops. However, sometimes callers\n * might want a different behavior. For example, with sources that attempt to report errors\n * to stopped subscribers, a caller can configure RxJS to throw an unhandled error instead.\n * This will _always_ be called asynchronously on another job in the runtime. This is because\n * we do not want errors thrown in this user-configured handler to interfere with the\n * behavior of the library.\n */\n onStoppedNotification: ((notification: ObservableNotification, subscriber: Subscriber) => void) | null;\n\n /**\n * The promise constructor used by default for {@link Observable#toPromise toPromise} and {@link Observable#forEach forEach}\n * methods.\n *\n * @deprecated As of version 8, RxJS will no longer support this sort of injection of a\n * Promise constructor. If you need a Promise implementation other than native promises,\n * please polyfill/patch Promise as you see appropriate. Will be removed in v8.\n */\n Promise?: PromiseConstructorLike;\n\n /**\n * If true, turns on synchronous error rethrowing, which is a deprecated behavior\n * in v6 and higher. This behavior enables bad patterns like wrapping a subscribe\n * call in a try/catch block. It also enables producer interference, a nasty bug\n * where a multicast can be broken for all observers by a downstream consumer with\n * an unhandled error. DO NOT USE THIS FLAG UNLESS IT'S NEEDED TO BUY TIME\n * FOR MIGRATION REASONS.\n *\n * @deprecated As of version 8, RxJS will no longer support synchronous throwing\n * of unhandled errors. All errors will be thrown on a separate call stack to prevent bad\n * behaviors described above. Will be removed in v8.\n */\n useDeprecatedSynchronousErrorHandling: boolean;\n\n /**\n * If true, enables an as-of-yet undocumented feature from v5: The ability to access\n * `unsubscribe()` via `this` context in `next` functions created in observers passed\n * to `subscribe`.\n *\n * This is being removed because the performance was severely problematic, and it could also cause\n * issues when types other than POJOs are passed to subscribe as subscribers, as they will likely have\n * their `this` context overwritten.\n *\n * @deprecated As of version 8, RxJS will no longer support altering the\n * context of next functions provided as part of an observer to Subscribe. Instead,\n * you will have access to a subscription or a signal or token that will allow you to do things like\n * unsubscribe and test closed status. Will be removed in v8.\n */\n useDeprecatedNextContext: boolean;\n}\n", "import type { TimerHandle } from './timerHandle';\ntype SetTimeoutFunction = (handler: () => void, timeout?: number, ...args: any[]) => TimerHandle;\ntype ClearTimeoutFunction = (handle: TimerHandle) => void;\n\ninterface TimeoutProvider {\n setTimeout: SetTimeoutFunction;\n clearTimeout: ClearTimeoutFunction;\n delegate:\n | {\n setTimeout: SetTimeoutFunction;\n clearTimeout: ClearTimeoutFunction;\n }\n | undefined;\n}\n\nexport const timeoutProvider: TimeoutProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n setTimeout(handler: () => void, timeout?: number, ...args) {\n const { delegate } = timeoutProvider;\n if (delegate?.setTimeout) {\n return delegate.setTimeout(handler, timeout, ...args);\n }\n return setTimeout(handler, timeout, ...args);\n },\n clearTimeout(handle) {\n const { delegate } = timeoutProvider;\n return (delegate?.clearTimeout || clearTimeout)(handle as any);\n },\n delegate: undefined,\n};\n", "import { config } from '../config';\nimport { timeoutProvider } from '../scheduler/timeoutProvider';\n\n/**\n * Handles an error on another job either with the user-configured {@link onUnhandledError},\n * or by throwing it on that new job so it can be picked up by `window.onerror`, `process.on('error')`, etc.\n *\n * This should be called whenever there is an error that is out-of-band with the subscription\n * or when an error hits a terminal boundary of the subscription and no error handler was provided.\n *\n * @param err the error to report\n */\nexport function reportUnhandledError(err: any) {\n timeoutProvider.setTimeout(() => {\n const { onUnhandledError } = config;\n if (onUnhandledError) {\n // Execute the user-configured error handler.\n onUnhandledError(err);\n } else {\n // Throw so it is picked up by the runtime's uncaught error mechanism.\n throw err;\n }\n });\n}\n", "/* tslint:disable:no-empty */\nexport function noop() { }\n", "import { CompleteNotification, NextNotification, ErrorNotification } from './types';\n\n/**\n * A completion object optimized for memory use and created to be the\n * same \"shape\" as other notifications in v8.\n * @internal\n */\nexport const COMPLETE_NOTIFICATION = (() => createNotification('C', undefined, undefined) as CompleteNotification)();\n\n/**\n * Internal use only. Creates an optimized error notification that is the same \"shape\"\n * as other notifications.\n * @internal\n */\nexport function errorNotification(error: any): ErrorNotification {\n return createNotification('E', undefined, error) as any;\n}\n\n/**\n * Internal use only. Creates an optimized next notification that is the same \"shape\"\n * as other notifications.\n * @internal\n */\nexport function nextNotification(value: T) {\n return createNotification('N', value, undefined) as NextNotification;\n}\n\n/**\n * Ensures that all notifications created internally have the same \"shape\" in v8.\n *\n * TODO: This is only exported to support a crazy legacy test in `groupBy`.\n * @internal\n */\nexport function createNotification(kind: 'N' | 'E' | 'C', value: any, error: any) {\n return {\n kind,\n value,\n error,\n };\n}\n", "import { config } from '../config';\n\nlet context: { errorThrown: boolean; error: any } | null = null;\n\n/**\n * Handles dealing with errors for super-gross mode. Creates a context, in which\n * any synchronously thrown errors will be passed to {@link captureError}. Which\n * will record the error such that it will be rethrown after the call back is complete.\n * TODO: Remove in v8\n * @param cb An immediately executed function.\n */\nexport function errorContext(cb: () => void) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n const isRoot = !context;\n if (isRoot) {\n context = { errorThrown: false, error: null };\n }\n cb();\n if (isRoot) {\n const { errorThrown, error } = context!;\n context = null;\n if (errorThrown) {\n throw error;\n }\n }\n } else {\n // This is the general non-deprecated path for everyone that\n // isn't crazy enough to use super-gross mode (useDeprecatedSynchronousErrorHandling)\n cb();\n }\n}\n\n/**\n * Captures errors only in super-gross mode.\n * @param err the error to capture\n */\nexport function captureError(err: any) {\n if (config.useDeprecatedSynchronousErrorHandling && context) {\n context.errorThrown = true;\n context.error = err;\n }\n}\n", "import { isFunction } from './util/isFunction';\nimport { Observer, ObservableNotification } from './types';\nimport { isSubscription, Subscription } from './Subscription';\nimport { config } from './config';\nimport { reportUnhandledError } from './util/reportUnhandledError';\nimport { noop } from './util/noop';\nimport { nextNotification, errorNotification, COMPLETE_NOTIFICATION } from './NotificationFactories';\nimport { timeoutProvider } from './scheduler/timeoutProvider';\nimport { captureError } from './util/errorContext';\n\n/**\n * Implements the {@link Observer} interface and extends the\n * {@link Subscription} class. While the {@link Observer} is the public API for\n * consuming the values of an {@link Observable}, all Observers get converted to\n * a Subscriber, in order to provide Subscription-like capabilities such as\n * `unsubscribe`. Subscriber is a common type in RxJS, and crucial for\n * implementing operators, but it is rarely used as a public API.\n *\n * @class Subscriber\n */\nexport class Subscriber extends Subscription implements Observer {\n /**\n * A static factory for a Subscriber, given a (potentially partial) definition\n * of an Observer.\n * @param next The `next` callback of an Observer.\n * @param error The `error` callback of an\n * Observer.\n * @param complete The `complete` callback of an\n * Observer.\n * @return A Subscriber wrapping the (partially defined)\n * Observer represented by the given arguments.\n * @nocollapse\n * @deprecated Do not use. Will be removed in v8. There is no replacement for this\n * method, and there is no reason to be creating instances of `Subscriber` directly.\n * If you have a specific use case, please file an issue.\n */\n static create(next?: (x?: T) => void, error?: (e?: any) => void, complete?: () => void): Subscriber {\n return new SafeSubscriber(next, error, complete);\n }\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n protected isStopped: boolean = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n protected destination: Subscriber | Observer; // this `any` is the escape hatch to erase extra type param (e.g. R)\n\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n * There is no reason to directly create an instance of Subscriber. This type is exported for typings reasons.\n */\n constructor(destination?: Subscriber | Observer) {\n super();\n if (destination) {\n this.destination = destination;\n // Automatically chain subscriptions together here.\n // if destination is a Subscription, then it is a Subscriber.\n if (isSubscription(destination)) {\n destination.add(this);\n }\n } else {\n this.destination = EMPTY_OBSERVER;\n }\n }\n\n /**\n * The {@link Observer} callback to receive notifications of type `next` from\n * the Observable, with a value. The Observable may call this method 0 or more\n * times.\n * @param {T} [value] The `next` value.\n * @return {void}\n */\n next(value?: T): void {\n if (this.isStopped) {\n handleStoppedNotification(nextNotification(value), this);\n } else {\n this._next(value!);\n }\n }\n\n /**\n * The {@link Observer} callback to receive notifications of type `error` from\n * the Observable, with an attached `Error`. Notifies the Observer that\n * the Observable has experienced an error condition.\n * @param {any} [err] The `error` exception.\n * @return {void}\n */\n error(err?: any): void {\n if (this.isStopped) {\n handleStoppedNotification(errorNotification(err), this);\n } else {\n this.isStopped = true;\n this._error(err);\n }\n }\n\n /**\n * The {@link Observer} callback to receive a valueless notification of type\n * `complete` from the Observable. Notifies the Observer that the Observable\n * has finished sending push-based notifications.\n * @return {void}\n */\n complete(): void {\n if (this.isStopped) {\n handleStoppedNotification(COMPLETE_NOTIFICATION, this);\n } else {\n this.isStopped = true;\n this._complete();\n }\n }\n\n unsubscribe(): void {\n if (!this.closed) {\n this.isStopped = true;\n super.unsubscribe();\n this.destination = null!;\n }\n }\n\n protected _next(value: T): void {\n this.destination.next(value);\n }\n\n protected _error(err: any): void {\n try {\n this.destination.error(err);\n } finally {\n this.unsubscribe();\n }\n }\n\n protected _complete(): void {\n try {\n this.destination.complete();\n } finally {\n this.unsubscribe();\n }\n }\n}\n\n/**\n * This bind is captured here because we want to be able to have\n * compatibility with monoid libraries that tend to use a method named\n * `bind`. In particular, a library called Monio requires this.\n */\nconst _bind = Function.prototype.bind;\n\nfunction bind any>(fn: Fn, thisArg: any): Fn {\n return _bind.call(fn, thisArg);\n}\n\n/**\n * Internal optimization only, DO NOT EXPOSE.\n * @internal\n */\nclass ConsumerObserver implements Observer {\n constructor(private partialObserver: Partial>) {}\n\n next(value: T): void {\n const { partialObserver } = this;\n if (partialObserver.next) {\n try {\n partialObserver.next(value);\n } catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n\n error(err: any): void {\n const { partialObserver } = this;\n if (partialObserver.error) {\n try {\n partialObserver.error(err);\n } catch (error) {\n handleUnhandledError(error);\n }\n } else {\n handleUnhandledError(err);\n }\n }\n\n complete(): void {\n const { partialObserver } = this;\n if (partialObserver.complete) {\n try {\n partialObserver.complete();\n } catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n}\n\nexport class SafeSubscriber extends Subscriber {\n constructor(\n observerOrNext?: Partial> | ((value: T) => void) | null,\n error?: ((e?: any) => void) | null,\n complete?: (() => void) | null\n ) {\n super();\n\n let partialObserver: Partial>;\n if (isFunction(observerOrNext) || !observerOrNext) {\n // The first argument is a function, not an observer. The next\n // two arguments *could* be observers, or they could be empty.\n partialObserver = {\n next: (observerOrNext ?? undefined) as (((value: T) => void) | undefined),\n error: error ?? undefined,\n complete: complete ?? undefined,\n };\n } else {\n // The first argument is a partial observer.\n let context: any;\n if (this && config.useDeprecatedNextContext) {\n // This is a deprecated path that made `this.unsubscribe()` available in\n // next handler functions passed to subscribe. This only exists behind a flag\n // now, as it is *very* slow.\n context = Object.create(observerOrNext);\n context.unsubscribe = () => this.unsubscribe();\n partialObserver = {\n next: observerOrNext.next && bind(observerOrNext.next, context),\n error: observerOrNext.error && bind(observerOrNext.error, context),\n complete: observerOrNext.complete && bind(observerOrNext.complete, context),\n };\n } else {\n // The \"normal\" path. Just use the partial observer directly.\n partialObserver = observerOrNext;\n }\n }\n\n // Wrap the partial observer to ensure it's a full observer, and\n // make sure proper error handling is accounted for.\n this.destination = new ConsumerObserver(partialObserver);\n }\n}\n\nfunction handleUnhandledError(error: any) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n captureError(error);\n } else {\n // Ideal path, we report this as an unhandled error,\n // which is thrown on a new call stack.\n reportUnhandledError(error);\n }\n}\n\n/**\n * An error handler used when no error handler was supplied\n * to the SafeSubscriber -- meaning no error handler was supplied\n * do the `subscribe` call on our observable.\n * @param err The error to handle\n */\nfunction defaultErrorHandler(err: any) {\n throw err;\n}\n\n/**\n * A handler for notifications that cannot be sent to a stopped subscriber.\n * @param notification The notification being sent\n * @param subscriber The stopped subscriber\n */\nfunction handleStoppedNotification(notification: ObservableNotification, subscriber: Subscriber) {\n const { onStoppedNotification } = config;\n onStoppedNotification && timeoutProvider.setTimeout(() => onStoppedNotification(notification, subscriber));\n}\n\n/**\n * The observer used as a stub for subscriptions where the user did not\n * pass any arguments to `subscribe`. Comes with the default error handling\n * behavior.\n */\nexport const EMPTY_OBSERVER: Readonly> & { closed: true } = {\n closed: true,\n next: noop,\n error: defaultErrorHandler,\n complete: noop,\n};\n", "/**\n * Symbol.observable or a string \"@@observable\". Used for interop\n *\n * @deprecated We will no longer be exporting this symbol in upcoming versions of RxJS.\n * Instead polyfill and use Symbol.observable directly *or* use https://www.npmjs.com/package/symbol-observable\n */\nexport const observable: string | symbol = (() => (typeof Symbol === 'function' && Symbol.observable) || '@@observable')();\n", "/**\n * This function takes one parameter and just returns it. Simply put,\n * this is like `(x: T): T => x`.\n *\n * ## Examples\n *\n * This is useful in some cases when using things like `mergeMap`\n *\n * ```ts\n * import { interval, take, map, range, mergeMap, identity } from 'rxjs';\n *\n * const source$ = interval(1000).pipe(take(5));\n *\n * const result$ = source$.pipe(\n * map(i => range(i)),\n * mergeMap(identity) // same as mergeMap(x => x)\n * );\n *\n * result$.subscribe({\n * next: console.log\n * });\n * ```\n *\n * Or when you want to selectively apply an operator\n *\n * ```ts\n * import { interval, take, identity } from 'rxjs';\n *\n * const shouldLimit = () => Math.random() < 0.5;\n *\n * const source$ = interval(1000);\n *\n * const result$ = source$.pipe(shouldLimit() ? take(5) : identity);\n *\n * result$.subscribe({\n * next: console.log\n * });\n * ```\n *\n * @param x Any value that is returned by this function\n * @returns The value passed as the first parameter to this function\n */\nexport function identity(x: T): T {\n return x;\n}\n", "import { identity } from './identity';\nimport { UnaryFunction } from '../types';\n\nexport function pipe(): typeof identity;\nexport function pipe(fn1: UnaryFunction): UnaryFunction;\nexport function pipe(fn1: UnaryFunction, fn2: UnaryFunction): UnaryFunction;\nexport function pipe(fn1: UnaryFunction, fn2: UnaryFunction, fn3: UnaryFunction): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction,\n fn8: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction,\n fn8: UnaryFunction,\n fn9: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction,\n fn8: UnaryFunction,\n fn9: UnaryFunction,\n ...fns: UnaryFunction[]\n): UnaryFunction;\n\n/**\n * pipe() can be called on one or more functions, each of which can take one argument (\"UnaryFunction\")\n * and uses it to return a value.\n * It returns a function that takes one argument, passes it to the first UnaryFunction, and then\n * passes the result to the next one, passes that result to the next one, and so on. \n */\nexport function pipe(...fns: Array>): UnaryFunction {\n return pipeFromArray(fns);\n}\n\n/** @internal */\nexport function pipeFromArray(fns: Array>): UnaryFunction {\n if (fns.length === 0) {\n return identity as UnaryFunction;\n }\n\n if (fns.length === 1) {\n return fns[0];\n }\n\n return function piped(input: T): R {\n return fns.reduce((prev: any, fn: UnaryFunction) => fn(prev), input as any);\n };\n}\n", "import { Operator } from './Operator';\nimport { SafeSubscriber, Subscriber } from './Subscriber';\nimport { isSubscription, Subscription } from './Subscription';\nimport { TeardownLogic, OperatorFunction, Subscribable, Observer } from './types';\nimport { observable as Symbol_observable } from './symbol/observable';\nimport { pipeFromArray } from './util/pipe';\nimport { config } from './config';\nimport { isFunction } from './util/isFunction';\nimport { errorContext } from './util/errorContext';\n\n/**\n * A representation of any set of values over any amount of time. This is the most basic building block\n * of RxJS.\n *\n * @class Observable\n */\nexport class Observable implements Subscribable {\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n */\n source: Observable | undefined;\n\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n */\n operator: Operator | undefined;\n\n /**\n * @constructor\n * @param {Function} subscribe the function that is called when the Observable is\n * initially subscribed to. This function is given a Subscriber, to which new values\n * can be `next`ed, or an `error` method can be called to raise an error, or\n * `complete` can be called to notify of a successful completion.\n */\n constructor(subscribe?: (this: Observable, subscriber: Subscriber) => TeardownLogic) {\n if (subscribe) {\n this._subscribe = subscribe;\n }\n }\n\n // HACK: Since TypeScript inherits static properties too, we have to\n // fight against TypeScript here so Subject can have a different static create signature\n /**\n * Creates a new Observable by calling the Observable constructor\n * @owner Observable\n * @method create\n * @param {Function} subscribe? the subscriber function to be passed to the Observable constructor\n * @return {Observable} a new observable\n * @nocollapse\n * @deprecated Use `new Observable()` instead. Will be removed in v8.\n */\n static create: (...args: any[]) => any = (subscribe?: (subscriber: Subscriber) => TeardownLogic) => {\n return new Observable(subscribe);\n };\n\n /**\n * Creates a new Observable, with this Observable instance as the source, and the passed\n * operator defined as the new observable's operator.\n * @method lift\n * @param operator the operator defining the operation to take on the observable\n * @return a new observable with the Operator applied\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n * If you have implemented an operator using `lift`, it is recommended that you create an\n * operator by simply returning `new Observable()` directly. See \"Creating new operators from\n * scratch\" section here: https://rxjs.dev/guide/operators\n */\n lift(operator?: Operator): Observable {\n const observable = new Observable();\n observable.source = this;\n observable.operator = operator;\n return observable;\n }\n\n subscribe(observerOrNext?: Partial> | ((value: T) => void)): Subscription;\n /** @deprecated Instead of passing separate callback arguments, use an observer argument. Signatures taking separate callback arguments will be removed in v8. Details: https://rxjs.dev/deprecations/subscribe-arguments */\n subscribe(next?: ((value: T) => void) | null, error?: ((error: any) => void) | null, complete?: (() => void) | null): Subscription;\n /**\n * Invokes an execution of an Observable and registers Observer handlers for notifications it will emit.\n *\n * Use it when you have all these Observables, but still nothing is happening.\n *\n * `subscribe` is not a regular operator, but a method that calls Observable's internal `subscribe` function. It\n * might be for example a function that you passed to Observable's constructor, but most of the time it is\n * a library implementation, which defines what will be emitted by an Observable, and when it be will emitted. This means\n * that calling `subscribe` is actually the moment when Observable starts its work, not when it is created, as it is often\n * the thought.\n *\n * Apart from starting the execution of an Observable, this method allows you to listen for values\n * that an Observable emits, as well as for when it completes or errors. You can achieve this in two\n * of the following ways.\n *\n * The first way is creating an object that implements {@link Observer} interface. It should have methods\n * defined by that interface, but note that it should be just a regular JavaScript object, which you can create\n * yourself in any way you want (ES6 class, classic function constructor, object literal etc.). In particular, do\n * not attempt to use any RxJS implementation details to create Observers - you don't need them. Remember also\n * that your object does not have to implement all methods. If you find yourself creating a method that doesn't\n * do anything, you can simply omit it. Note however, if the `error` method is not provided and an error happens,\n * it will be thrown asynchronously. Errors thrown asynchronously cannot be caught using `try`/`catch`. Instead,\n * use the {@link onUnhandledError} configuration option or use a runtime handler (like `window.onerror` or\n * `process.on('error)`) to be notified of unhandled errors. Because of this, it's recommended that you provide\n * an `error` method to avoid missing thrown errors.\n *\n * The second way is to give up on Observer object altogether and simply provide callback functions in place of its methods.\n * This means you can provide three functions as arguments to `subscribe`, where the first function is equivalent\n * of a `next` method, the second of an `error` method and the third of a `complete` method. Just as in case of an Observer,\n * if you do not need to listen for something, you can omit a function by passing `undefined` or `null`,\n * since `subscribe` recognizes these functions by where they were placed in function call. When it comes\n * to the `error` function, as with an Observer, if not provided, errors emitted by an Observable will be thrown asynchronously.\n *\n * You can, however, subscribe with no parameters at all. This may be the case where you're not interested in terminal events\n * and you also handled emissions internally by using operators (e.g. using `tap`).\n *\n * Whichever style of calling `subscribe` you use, in both cases it returns a Subscription object.\n * This object allows you to call `unsubscribe` on it, which in turn will stop the work that an Observable does and will clean\n * up all resources that an Observable used. Note that cancelling a subscription will not call `complete` callback\n * provided to `subscribe` function, which is reserved for a regular completion signal that comes from an Observable.\n *\n * Remember that callbacks provided to `subscribe` are not guaranteed to be called asynchronously.\n * It is an Observable itself that decides when these functions will be called. For example {@link of}\n * by default emits all its values synchronously. Always check documentation for how given Observable\n * will behave when subscribed and if its default behavior can be modified with a `scheduler`.\n *\n * #### Examples\n *\n * Subscribe with an {@link guide/observer Observer}\n *\n * ```ts\n * import { of } from 'rxjs';\n *\n * const sumObserver = {\n * sum: 0,\n * next(value) {\n * console.log('Adding: ' + value);\n * this.sum = this.sum + value;\n * },\n * error() {\n * // We actually could just remove this method,\n * // since we do not really care about errors right now.\n * },\n * complete() {\n * console.log('Sum equals: ' + this.sum);\n * }\n * };\n *\n * of(1, 2, 3) // Synchronously emits 1, 2, 3 and then completes.\n * .subscribe(sumObserver);\n *\n * // Logs:\n * // 'Adding: 1'\n * // 'Adding: 2'\n * // 'Adding: 3'\n * // 'Sum equals: 6'\n * ```\n *\n * Subscribe with functions ({@link deprecations/subscribe-arguments deprecated})\n *\n * ```ts\n * import { of } from 'rxjs'\n *\n * let sum = 0;\n *\n * of(1, 2, 3).subscribe(\n * value => {\n * console.log('Adding: ' + value);\n * sum = sum + value;\n * },\n * undefined,\n * () => console.log('Sum equals: ' + sum)\n * );\n *\n * // Logs:\n * // 'Adding: 1'\n * // 'Adding: 2'\n * // 'Adding: 3'\n * // 'Sum equals: 6'\n * ```\n *\n * Cancel a subscription\n *\n * ```ts\n * import { interval } from 'rxjs';\n *\n * const subscription = interval(1000).subscribe({\n * next(num) {\n * console.log(num)\n * },\n * complete() {\n * // Will not be called, even when cancelling subscription.\n * console.log('completed!');\n * }\n * });\n *\n * setTimeout(() => {\n * subscription.unsubscribe();\n * console.log('unsubscribed!');\n * }, 2500);\n *\n * // Logs:\n * // 0 after 1s\n * // 1 after 2s\n * // 'unsubscribed!' after 2.5s\n * ```\n *\n * @param {Observer|Function} observerOrNext (optional) Either an observer with methods to be called,\n * or the first of three possible handlers, which is the handler for each value emitted from the subscribed\n * Observable.\n * @param {Function} error (optional) A handler for a terminal event resulting from an error. If no error handler is provided,\n * the error will be thrown asynchronously as unhandled.\n * @param {Function} complete (optional) A handler for a terminal event resulting from successful completion.\n * @return {Subscription} a subscription reference to the registered handlers\n * @method subscribe\n */\n subscribe(\n observerOrNext?: Partial> | ((value: T) => void) | null,\n error?: ((error: any) => void) | null,\n complete?: (() => void) | null\n ): Subscription {\n const subscriber = isSubscriber(observerOrNext) ? observerOrNext : new SafeSubscriber(observerOrNext, error, complete);\n\n errorContext(() => {\n const { operator, source } = this;\n subscriber.add(\n operator\n ? // We're dealing with a subscription in the\n // operator chain to one of our lifted operators.\n operator.call(subscriber, source)\n : source\n ? // If `source` has a value, but `operator` does not, something that\n // had intimate knowledge of our API, like our `Subject`, must have\n // set it. We're going to just call `_subscribe` directly.\n this._subscribe(subscriber)\n : // In all other cases, we're likely wrapping a user-provided initializer\n // function, so we need to catch errors and handle them appropriately.\n this._trySubscribe(subscriber)\n );\n });\n\n return subscriber;\n }\n\n /** @internal */\n protected _trySubscribe(sink: Subscriber): TeardownLogic {\n try {\n return this._subscribe(sink);\n } catch (err) {\n // We don't need to return anything in this case,\n // because it's just going to try to `add()` to a subscription\n // above.\n sink.error(err);\n }\n }\n\n /**\n * Used as a NON-CANCELLABLE means of subscribing to an observable, for use with\n * APIs that expect promises, like `async/await`. You cannot unsubscribe from this.\n *\n * **WARNING**: Only use this with observables you *know* will complete. If the source\n * observable does not complete, you will end up with a promise that is hung up, and\n * potentially all of the state of an async function hanging out in memory. To avoid\n * this situation, look into adding something like {@link timeout}, {@link take},\n * {@link takeWhile}, or {@link takeUntil} amongst others.\n *\n * #### Example\n *\n * ```ts\n * import { interval, take } from 'rxjs';\n *\n * const source$ = interval(1000).pipe(take(4));\n *\n * async function getTotal() {\n * let total = 0;\n *\n * await source$.forEach(value => {\n * total += value;\n * console.log('observable -> ' + value);\n * });\n *\n * return total;\n * }\n *\n * getTotal().then(\n * total => console.log('Total: ' + total)\n * );\n *\n * // Expected:\n * // 'observable -> 0'\n * // 'observable -> 1'\n * // 'observable -> 2'\n * // 'observable -> 3'\n * // 'Total: 6'\n * ```\n *\n * @param next a handler for each value emitted by the observable\n * @return a promise that either resolves on observable completion or\n * rejects with the handled error\n */\n forEach(next: (value: T) => void): Promise;\n\n /**\n * @param next a handler for each value emitted by the observable\n * @param promiseCtor a constructor function used to instantiate the Promise\n * @return a promise that either resolves on observable completion or\n * rejects with the handled error\n * @deprecated Passing a Promise constructor will no longer be available\n * in upcoming versions of RxJS. This is because it adds weight to the library, for very\n * little benefit. If you need this functionality, it is recommended that you either\n * polyfill Promise, or you create an adapter to convert the returned native promise\n * to whatever promise implementation you wanted. Will be removed in v8.\n */\n forEach(next: (value: T) => void, promiseCtor: PromiseConstructorLike): Promise;\n\n forEach(next: (value: T) => void, promiseCtor?: PromiseConstructorLike): Promise {\n promiseCtor = getPromiseCtor(promiseCtor);\n\n return new promiseCtor((resolve, reject) => {\n const subscriber = new SafeSubscriber({\n next: (value) => {\n try {\n next(value);\n } catch (err) {\n reject(err);\n subscriber.unsubscribe();\n }\n },\n error: reject,\n complete: resolve,\n });\n this.subscribe(subscriber);\n }) as Promise;\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): TeardownLogic {\n return this.source?.subscribe(subscriber);\n }\n\n /**\n * An interop point defined by the es7-observable spec https://github.com/zenparsing/es-observable\n * @method Symbol.observable\n * @return {Observable} this instance of the observable\n */\n [Symbol_observable]() {\n return this;\n }\n\n /* tslint:disable:max-line-length */\n pipe(): Observable;\n pipe(op1: OperatorFunction): Observable;\n pipe(op1: OperatorFunction, op2: OperatorFunction): Observable;\n pipe(op1: OperatorFunction, op2: OperatorFunction, op3: OperatorFunction): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction,\n op8: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction,\n op8: OperatorFunction,\n op9: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction,\n op8: OperatorFunction,\n op9: OperatorFunction,\n ...operations: OperatorFunction[]\n ): Observable;\n /* tslint:enable:max-line-length */\n\n /**\n * Used to stitch together functional operators into a chain.\n * @method pipe\n * @return {Observable} the Observable result of all of the operators having\n * been called in the order they were passed in.\n *\n * ## Example\n *\n * ```ts\n * import { interval, filter, map, scan } from 'rxjs';\n *\n * interval(1000)\n * .pipe(\n * filter(x => x % 2 === 0),\n * map(x => x + x),\n * scan((acc, x) => acc + x)\n * )\n * .subscribe(x => console.log(x));\n * ```\n */\n pipe(...operations: OperatorFunction[]): Observable {\n return pipeFromArray(operations)(this);\n }\n\n /* tslint:disable:max-line-length */\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(): Promise;\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(PromiseCtor: typeof Promise): Promise;\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(PromiseCtor: PromiseConstructorLike): Promise;\n /* tslint:enable:max-line-length */\n\n /**\n * Subscribe to this Observable and get a Promise resolving on\n * `complete` with the last emission (if any).\n *\n * **WARNING**: Only use this with observables you *know* will complete. If the source\n * observable does not complete, you will end up with a promise that is hung up, and\n * potentially all of the state of an async function hanging out in memory. To avoid\n * this situation, look into adding something like {@link timeout}, {@link take},\n * {@link takeWhile}, or {@link takeUntil} amongst others.\n *\n * @method toPromise\n * @param [promiseCtor] a constructor function used to instantiate\n * the Promise\n * @return A Promise that resolves with the last value emit, or\n * rejects on an error. If there were no emissions, Promise\n * resolves with undefined.\n * @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise\n */\n toPromise(promiseCtor?: PromiseConstructorLike): Promise {\n promiseCtor = getPromiseCtor(promiseCtor);\n\n return new promiseCtor((resolve, reject) => {\n let value: T | undefined;\n this.subscribe(\n (x: T) => (value = x),\n (err: any) => reject(err),\n () => resolve(value)\n );\n }) as Promise;\n }\n}\n\n/**\n * Decides between a passed promise constructor from consuming code,\n * A default configured promise constructor, and the native promise\n * constructor and returns it. If nothing can be found, it will throw\n * an error.\n * @param promiseCtor The optional promise constructor to passed by consuming code\n */\nfunction getPromiseCtor(promiseCtor: PromiseConstructorLike | undefined) {\n return promiseCtor ?? config.Promise ?? Promise;\n}\n\nfunction isObserver(value: any): value is Observer {\n return value && isFunction(value.next) && isFunction(value.error) && isFunction(value.complete);\n}\n\nfunction isSubscriber(value: any): value is Subscriber {\n return (value && value instanceof Subscriber) || (isObserver(value) && isSubscription(value));\n}\n", "import { Observable } from '../Observable';\nimport { Subscriber } from '../Subscriber';\nimport { OperatorFunction } from '../types';\nimport { isFunction } from './isFunction';\n\n/**\n * Used to determine if an object is an Observable with a lift function.\n */\nexport function hasLift(source: any): source is { lift: InstanceType['lift'] } {\n return isFunction(source?.lift);\n}\n\n/**\n * Creates an `OperatorFunction`. Used to define operators throughout the library in a concise way.\n * @param init The logic to connect the liftedSource to the subscriber at the moment of subscription.\n */\nexport function operate(\n init: (liftedSource: Observable, subscriber: Subscriber) => (() => void) | void\n): OperatorFunction {\n return (source: Observable) => {\n if (hasLift(source)) {\n return source.lift(function (this: Subscriber, liftedSource: Observable) {\n try {\n return init(liftedSource, this);\n } catch (err) {\n this.error(err);\n }\n });\n }\n throw new TypeError('Unable to lift unknown Observable type');\n };\n}\n", "import { Subscriber } from '../Subscriber';\n\n/**\n * Creates an instance of an `OperatorSubscriber`.\n * @param destination The downstream subscriber.\n * @param onNext Handles next values, only called if this subscriber is not stopped or closed. Any\n * error that occurs in this function is caught and sent to the `error` method of this subscriber.\n * @param onError Handles errors from the subscription, any errors that occur in this handler are caught\n * and send to the `destination` error handler.\n * @param onComplete Handles completion notification from the subscription. Any errors that occur in\n * this handler are sent to the `destination` error handler.\n * @param onFinalize Additional teardown logic here. This will only be called on teardown if the\n * subscriber itself is not already closed. This is called after all other teardown logic is executed.\n */\nexport function createOperatorSubscriber(\n destination: Subscriber,\n onNext?: (value: T) => void,\n onComplete?: () => void,\n onError?: (err: any) => void,\n onFinalize?: () => void\n): Subscriber {\n return new OperatorSubscriber(destination, onNext, onComplete, onError, onFinalize);\n}\n\n/**\n * A generic helper for allowing operators to be created with a Subscriber and\n * use closures to capture necessary state from the operator function itself.\n */\nexport class OperatorSubscriber extends Subscriber {\n /**\n * Creates an instance of an `OperatorSubscriber`.\n * @param destination The downstream subscriber.\n * @param onNext Handles next values, only called if this subscriber is not stopped or closed. Any\n * error that occurs in this function is caught and sent to the `error` method of this subscriber.\n * @param onError Handles errors from the subscription, any errors that occur in this handler are caught\n * and send to the `destination` error handler.\n * @param onComplete Handles completion notification from the subscription. Any errors that occur in\n * this handler are sent to the `destination` error handler.\n * @param onFinalize Additional finalization logic here. This will only be called on finalization if the\n * subscriber itself is not already closed. This is called after all other finalization logic is executed.\n * @param shouldUnsubscribe An optional check to see if an unsubscribe call should truly unsubscribe.\n * NOTE: This currently **ONLY** exists to support the strange behavior of {@link groupBy}, where unsubscription\n * to the resulting observable does not actually disconnect from the source if there are active subscriptions\n * to any grouped observable. (DO NOT EXPOSE OR USE EXTERNALLY!!!)\n */\n constructor(\n destination: Subscriber,\n onNext?: (value: T) => void,\n onComplete?: () => void,\n onError?: (err: any) => void,\n private onFinalize?: () => void,\n private shouldUnsubscribe?: () => boolean\n ) {\n // It's important - for performance reasons - that all of this class's\n // members are initialized and that they are always initialized in the same\n // order. This will ensure that all OperatorSubscriber instances have the\n // same hidden class in V8. This, in turn, will help keep the number of\n // hidden classes involved in property accesses within the base class as\n // low as possible. If the number of hidden classes involved exceeds four,\n // the property accesses will become megamorphic and performance penalties\n // will be incurred - i.e. inline caches won't be used.\n //\n // The reasons for ensuring all instances have the same hidden class are\n // further discussed in this blog post from Benedikt Meurer:\n // https://benediktmeurer.de/2018/03/23/impact-of-polymorphism-on-component-based-frameworks-like-react/\n super(destination);\n this._next = onNext\n ? function (this: OperatorSubscriber, value: T) {\n try {\n onNext(value);\n } catch (err) {\n destination.error(err);\n }\n }\n : super._next;\n this._error = onError\n ? function (this: OperatorSubscriber, err: any) {\n try {\n onError(err);\n } catch (err) {\n // Send any errors that occur down stream.\n destination.error(err);\n } finally {\n // Ensure finalization.\n this.unsubscribe();\n }\n }\n : super._error;\n this._complete = onComplete\n ? function (this: OperatorSubscriber) {\n try {\n onComplete();\n } catch (err) {\n // Send any errors that occur down stream.\n destination.error(err);\n } finally {\n // Ensure finalization.\n this.unsubscribe();\n }\n }\n : super._complete;\n }\n\n unsubscribe() {\n if (!this.shouldUnsubscribe || this.shouldUnsubscribe()) {\n const { closed } = this;\n super.unsubscribe();\n // Execute additional teardown if we have any and we didn't already do so.\n !closed && this.onFinalize?.();\n }\n }\n}\n", "import { Subscription } from '../Subscription';\n\ninterface AnimationFrameProvider {\n schedule(callback: FrameRequestCallback): Subscription;\n requestAnimationFrame: typeof requestAnimationFrame;\n cancelAnimationFrame: typeof cancelAnimationFrame;\n delegate:\n | {\n requestAnimationFrame: typeof requestAnimationFrame;\n cancelAnimationFrame: typeof cancelAnimationFrame;\n }\n | undefined;\n}\n\nexport const animationFrameProvider: AnimationFrameProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n schedule(callback) {\n let request = requestAnimationFrame;\n let cancel: typeof cancelAnimationFrame | undefined = cancelAnimationFrame;\n const { delegate } = animationFrameProvider;\n if (delegate) {\n request = delegate.requestAnimationFrame;\n cancel = delegate.cancelAnimationFrame;\n }\n const handle = request((timestamp) => {\n // Clear the cancel function. The request has been fulfilled, so\n // attempting to cancel the request upon unsubscription would be\n // pointless.\n cancel = undefined;\n callback(timestamp);\n });\n return new Subscription(() => cancel?.(handle));\n },\n requestAnimationFrame(...args) {\n const { delegate } = animationFrameProvider;\n return (delegate?.requestAnimationFrame || requestAnimationFrame)(...args);\n },\n cancelAnimationFrame(...args) {\n const { delegate } = animationFrameProvider;\n return (delegate?.cancelAnimationFrame || cancelAnimationFrame)(...args);\n },\n delegate: undefined,\n};\n", "import { createErrorClass } from './createErrorClass';\n\nexport interface ObjectUnsubscribedError extends Error {}\n\nexport interface ObjectUnsubscribedErrorCtor {\n /**\n * @deprecated Internal implementation detail. Do not construct error instances.\n * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269\n */\n new (): ObjectUnsubscribedError;\n}\n\n/**\n * An error thrown when an action is invalid because the object has been\n * unsubscribed.\n *\n * @see {@link Subject}\n * @see {@link BehaviorSubject}\n *\n * @class ObjectUnsubscribedError\n */\nexport const ObjectUnsubscribedError: ObjectUnsubscribedErrorCtor = createErrorClass(\n (_super) =>\n function ObjectUnsubscribedErrorImpl(this: any) {\n _super(this);\n this.name = 'ObjectUnsubscribedError';\n this.message = 'object unsubscribed';\n }\n);\n", "import { Operator } from './Operator';\nimport { Observable } from './Observable';\nimport { Subscriber } from './Subscriber';\nimport { Subscription, EMPTY_SUBSCRIPTION } from './Subscription';\nimport { Observer, SubscriptionLike, TeardownLogic } from './types';\nimport { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';\nimport { arrRemove } from './util/arrRemove';\nimport { errorContext } from './util/errorContext';\n\n/**\n * A Subject is a special type of Observable that allows values to be\n * multicasted to many Observers. Subjects are like EventEmitters.\n *\n * Every Subject is an Observable and an Observer. You can subscribe to a\n * Subject, and you can call next to feed values as well as error and complete.\n */\nexport class Subject extends Observable implements SubscriptionLike {\n closed = false;\n\n private currentObservers: Observer[] | null = null;\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n observers: Observer[] = [];\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n isStopped = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n hasError = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n thrownError: any = null;\n\n /**\n * Creates a \"subject\" by basically gluing an observer to an observable.\n *\n * @nocollapse\n * @deprecated Recommended you do not use. Will be removed at some point in the future. Plans for replacement still under discussion.\n */\n static create: (...args: any[]) => any = (destination: Observer, source: Observable): AnonymousSubject => {\n return new AnonymousSubject(destination, source);\n };\n\n constructor() {\n // NOTE: This must be here to obscure Observable's constructor.\n super();\n }\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n lift(operator: Operator): Observable {\n const subject = new AnonymousSubject(this, this);\n subject.operator = operator as any;\n return subject as any;\n }\n\n /** @internal */\n protected _throwIfClosed() {\n if (this.closed) {\n throw new ObjectUnsubscribedError();\n }\n }\n\n next(value: T) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n if (!this.currentObservers) {\n this.currentObservers = Array.from(this.observers);\n }\n for (const observer of this.currentObservers) {\n observer.next(value);\n }\n }\n });\n }\n\n error(err: any) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.hasError = this.isStopped = true;\n this.thrownError = err;\n const { observers } = this;\n while (observers.length) {\n observers.shift()!.error(err);\n }\n }\n });\n }\n\n complete() {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.isStopped = true;\n const { observers } = this;\n while (observers.length) {\n observers.shift()!.complete();\n }\n }\n });\n }\n\n unsubscribe() {\n this.isStopped = this.closed = true;\n this.observers = this.currentObservers = null!;\n }\n\n get observed() {\n return this.observers?.length > 0;\n }\n\n /** @internal */\n protected _trySubscribe(subscriber: Subscriber): TeardownLogic {\n this._throwIfClosed();\n return super._trySubscribe(subscriber);\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n this._throwIfClosed();\n this._checkFinalizedStatuses(subscriber);\n return this._innerSubscribe(subscriber);\n }\n\n /** @internal */\n protected _innerSubscribe(subscriber: Subscriber) {\n const { hasError, isStopped, observers } = this;\n if (hasError || isStopped) {\n return EMPTY_SUBSCRIPTION;\n }\n this.currentObservers = null;\n observers.push(subscriber);\n return new Subscription(() => {\n this.currentObservers = null;\n arrRemove(observers, subscriber);\n });\n }\n\n /** @internal */\n protected _checkFinalizedStatuses(subscriber: Subscriber) {\n const { hasError, thrownError, isStopped } = this;\n if (hasError) {\n subscriber.error(thrownError);\n } else if (isStopped) {\n subscriber.complete();\n }\n }\n\n /**\n * Creates a new Observable with this Subject as the source. You can do this\n * to create custom Observer-side logic of the Subject and conceal it from\n * code that uses the Observable.\n * @return {Observable} Observable that the Subject casts to\n */\n asObservable(): Observable {\n const observable: any = new Observable();\n observable.source = this;\n return observable;\n }\n}\n\n/**\n * @class AnonymousSubject\n */\nexport class AnonymousSubject extends Subject {\n constructor(\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n public destination?: Observer,\n source?: Observable\n ) {\n super();\n this.source = source;\n }\n\n next(value: T) {\n this.destination?.next?.(value);\n }\n\n error(err: any) {\n this.destination?.error?.(err);\n }\n\n complete() {\n this.destination?.complete?.();\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n return this.source?.subscribe(subscriber) ?? EMPTY_SUBSCRIPTION;\n }\n}\n", "import { Subject } from './Subject';\nimport { Subscriber } from './Subscriber';\nimport { Subscription } from './Subscription';\n\n/**\n * A variant of Subject that requires an initial value and emits its current\n * value whenever it is subscribed to.\n *\n * @class BehaviorSubject\n */\nexport class BehaviorSubject extends Subject {\n constructor(private _value: T) {\n super();\n }\n\n get value(): T {\n return this.getValue();\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n const subscription = super._subscribe(subscriber);\n !subscription.closed && subscriber.next(this._value);\n return subscription;\n }\n\n getValue(): T {\n const { hasError, thrownError, _value } = this;\n if (hasError) {\n throw thrownError;\n }\n this._throwIfClosed();\n return _value;\n }\n\n next(value: T): void {\n super.next((this._value = value));\n }\n}\n", "import { TimestampProvider } from '../types';\n\ninterface DateTimestampProvider extends TimestampProvider {\n delegate: TimestampProvider | undefined;\n}\n\nexport const dateTimestampProvider: DateTimestampProvider = {\n now() {\n // Use the variable rather than `this` so that the function can be called\n // without being bound to the provider.\n return (dateTimestampProvider.delegate || Date).now();\n },\n delegate: undefined,\n};\n", "import { Subject } from './Subject';\nimport { TimestampProvider } from './types';\nimport { Subscriber } from './Subscriber';\nimport { Subscription } from './Subscription';\nimport { dateTimestampProvider } from './scheduler/dateTimestampProvider';\n\n/**\n * A variant of {@link Subject} that \"replays\" old values to new subscribers by emitting them when they first subscribe.\n *\n * `ReplaySubject` has an internal buffer that will store a specified number of values that it has observed. Like `Subject`,\n * `ReplaySubject` \"observes\" values by having them passed to its `next` method. When it observes a value, it will store that\n * value for a time determined by the configuration of the `ReplaySubject`, as passed to its constructor.\n *\n * When a new subscriber subscribes to the `ReplaySubject` instance, it will synchronously emit all values in its buffer in\n * a First-In-First-Out (FIFO) manner. The `ReplaySubject` will also complete, if it has observed completion; and it will\n * error if it has observed an error.\n *\n * There are two main configuration items to be concerned with:\n *\n * 1. `bufferSize` - This will determine how many items are stored in the buffer, defaults to infinite.\n * 2. `windowTime` - The amount of time to hold a value in the buffer before removing it from the buffer.\n *\n * Both configurations may exist simultaneously. So if you would like to buffer a maximum of 3 values, as long as the values\n * are less than 2 seconds old, you could do so with a `new ReplaySubject(3, 2000)`.\n *\n * ### Differences with BehaviorSubject\n *\n * `BehaviorSubject` is similar to `new ReplaySubject(1)`, with a couple of exceptions:\n *\n * 1. `BehaviorSubject` comes \"primed\" with a single value upon construction.\n * 2. `ReplaySubject` will replay values, even after observing an error, where `BehaviorSubject` will not.\n *\n * @see {@link Subject}\n * @see {@link BehaviorSubject}\n * @see {@link shareReplay}\n */\nexport class ReplaySubject extends Subject {\n private _buffer: (T | number)[] = [];\n private _infiniteTimeWindow = true;\n\n /**\n * @param bufferSize The size of the buffer to replay on subscription\n * @param windowTime The amount of time the buffered items will stay buffered\n * @param timestampProvider An object with a `now()` method that provides the current timestamp. This is used to\n * calculate the amount of time something has been buffered.\n */\n constructor(\n private _bufferSize = Infinity,\n private _windowTime = Infinity,\n private _timestampProvider: TimestampProvider = dateTimestampProvider\n ) {\n super();\n this._infiniteTimeWindow = _windowTime === Infinity;\n this._bufferSize = Math.max(1, _bufferSize);\n this._windowTime = Math.max(1, _windowTime);\n }\n\n next(value: T): void {\n const { isStopped, _buffer, _infiniteTimeWindow, _timestampProvider, _windowTime } = this;\n if (!isStopped) {\n _buffer.push(value);\n !_infiniteTimeWindow && _buffer.push(_timestampProvider.now() + _windowTime);\n }\n this._trimBuffer();\n super.next(value);\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n this._throwIfClosed();\n this._trimBuffer();\n\n const subscription = this._innerSubscribe(subscriber);\n\n const { _infiniteTimeWindow, _buffer } = this;\n // We use a copy here, so reentrant code does not mutate our array while we're\n // emitting it to a new subscriber.\n const copy = _buffer.slice();\n for (let i = 0; i < copy.length && !subscriber.closed; i += _infiniteTimeWindow ? 1 : 2) {\n subscriber.next(copy[i] as T);\n }\n\n this._checkFinalizedStatuses(subscriber);\n\n return subscription;\n }\n\n private _trimBuffer() {\n const { _bufferSize, _timestampProvider, _buffer, _infiniteTimeWindow } = this;\n // If we don't have an infinite buffer size, and we're over the length,\n // use splice to truncate the old buffer values off. Note that we have to\n // double the size for instances where we're not using an infinite time window\n // because we're storing the values and the timestamps in the same array.\n const adjustedBufferSize = (_infiniteTimeWindow ? 1 : 2) * _bufferSize;\n _bufferSize < Infinity && adjustedBufferSize < _buffer.length && _buffer.splice(0, _buffer.length - adjustedBufferSize);\n\n // Now, if we're not in an infinite time window, remove all values where the time is\n // older than what is allowed.\n if (!_infiniteTimeWindow) {\n const now = _timestampProvider.now();\n let last = 0;\n // Search the array for the first timestamp that isn't expired and\n // truncate the buffer up to that point.\n for (let i = 1; i < _buffer.length && (_buffer[i] as number) <= now; i += 2) {\n last = i;\n }\n last && _buffer.splice(0, last + 1);\n }\n }\n}\n", "import { Scheduler } from '../Scheduler';\nimport { Subscription } from '../Subscription';\nimport { SchedulerAction } from '../types';\n\n/**\n * A unit of work to be executed in a `scheduler`. An action is typically\n * created from within a {@link SchedulerLike} and an RxJS user does not need to concern\n * themselves about creating and manipulating an Action.\n *\n * ```ts\n * class Action extends Subscription {\n * new (scheduler: Scheduler, work: (state?: T) => void);\n * schedule(state?: T, delay: number = 0): Subscription;\n * }\n * ```\n *\n * @class Action\n */\nexport class Action extends Subscription {\n constructor(scheduler: Scheduler, work: (this: SchedulerAction, state?: T) => void) {\n super();\n }\n /**\n * Schedules this action on its parent {@link SchedulerLike} for execution. May be passed\n * some context object, `state`. May happen at some point in the future,\n * according to the `delay` parameter, if specified.\n * @param {T} [state] Some contextual data that the `work` function uses when\n * called by the Scheduler.\n * @param {number} [delay] Time to wait before executing the work, where the\n * time unit is implicit and defined by the Scheduler.\n * @return {void}\n */\n public schedule(state?: T, delay: number = 0): Subscription {\n return this;\n }\n}\n", "import type { TimerHandle } from './timerHandle';\ntype SetIntervalFunction = (handler: () => void, timeout?: number, ...args: any[]) => TimerHandle;\ntype ClearIntervalFunction = (handle: TimerHandle) => void;\n\ninterface IntervalProvider {\n setInterval: SetIntervalFunction;\n clearInterval: ClearIntervalFunction;\n delegate:\n | {\n setInterval: SetIntervalFunction;\n clearInterval: ClearIntervalFunction;\n }\n | undefined;\n}\n\nexport const intervalProvider: IntervalProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n setInterval(handler: () => void, timeout?: number, ...args) {\n const { delegate } = intervalProvider;\n if (delegate?.setInterval) {\n return delegate.setInterval(handler, timeout, ...args);\n }\n return setInterval(handler, timeout, ...args);\n },\n clearInterval(handle) {\n const { delegate } = intervalProvider;\n return (delegate?.clearInterval || clearInterval)(handle as any);\n },\n delegate: undefined,\n};\n", "import { Action } from './Action';\nimport { SchedulerAction } from '../types';\nimport { Subscription } from '../Subscription';\nimport { AsyncScheduler } from './AsyncScheduler';\nimport { intervalProvider } from './intervalProvider';\nimport { arrRemove } from '../util/arrRemove';\nimport { TimerHandle } from './timerHandle';\n\nexport class AsyncAction extends Action {\n public id: TimerHandle | undefined;\n public state?: T;\n // @ts-ignore: Property has no initializer and is not definitely assigned\n public delay: number;\n protected pending: boolean = false;\n\n constructor(protected scheduler: AsyncScheduler, protected work: (this: SchedulerAction, state?: T) => void) {\n super(scheduler, work);\n }\n\n public schedule(state?: T, delay: number = 0): Subscription {\n if (this.closed) {\n return this;\n }\n\n // Always replace the current state with the new state.\n this.state = state;\n\n const id = this.id;\n const scheduler = this.scheduler;\n\n //\n // Important implementation note:\n //\n // Actions only execute once by default, unless rescheduled from within the\n // scheduled callback. This allows us to implement single and repeat\n // actions via the same code path, without adding API surface area, as well\n // as mimic traditional recursion but across asynchronous boundaries.\n //\n // However, JS runtimes and timers distinguish between intervals achieved by\n // serial `setTimeout` calls vs. a single `setInterval` call. An interval of\n // serial `setTimeout` calls can be individually delayed, which delays\n // scheduling the next `setTimeout`, and so on. `setInterval` attempts to\n // guarantee the interval callback will be invoked more precisely to the\n // interval period, regardless of load.\n //\n // Therefore, we use `setInterval` to schedule single and repeat actions.\n // If the action reschedules itself with the same delay, the interval is not\n // canceled. If the action doesn't reschedule, or reschedules with a\n // different delay, the interval will be canceled after scheduled callback\n // execution.\n //\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, delay);\n }\n\n // Set the pending flag indicating that this action has been scheduled, or\n // has recursively rescheduled itself.\n this.pending = true;\n\n this.delay = delay;\n // If this action has already an async Id, don't request a new one.\n this.id = this.id ?? this.requestAsyncId(scheduler, this.id, delay);\n\n return this;\n }\n\n protected requestAsyncId(scheduler: AsyncScheduler, _id?: TimerHandle, delay: number = 0): TimerHandle {\n return intervalProvider.setInterval(scheduler.flush.bind(scheduler, this), delay);\n }\n\n protected recycleAsyncId(_scheduler: AsyncScheduler, id?: TimerHandle, delay: number | null = 0): TimerHandle | undefined {\n // If this action is rescheduled with the same delay time, don't clear the interval id.\n if (delay != null && this.delay === delay && this.pending === false) {\n return id;\n }\n // Otherwise, if the action's delay time is different from the current delay,\n // or the action has been rescheduled before it's executed, clear the interval id\n if (id != null) {\n intervalProvider.clearInterval(id);\n }\n\n return undefined;\n }\n\n /**\n * Immediately executes this action and the `work` it contains.\n * @return {any}\n */\n public execute(state: T, delay: number): any {\n if (this.closed) {\n return new Error('executing a cancelled action');\n }\n\n this.pending = false;\n const error = this._execute(state, delay);\n if (error) {\n return error;\n } else if (this.pending === false && this.id != null) {\n // Dequeue if the action didn't reschedule itself. Don't call\n // unsubscribe(), because the action could reschedule later.\n // For example:\n // ```\n // scheduler.schedule(function doWork(counter) {\n // /* ... I'm a busy worker bee ... */\n // var originalAction = this;\n // /* wait 100ms before rescheduling the action */\n // setTimeout(function () {\n // originalAction.schedule(counter + 1);\n // }, 100);\n // }, 1000);\n // ```\n this.id = this.recycleAsyncId(this.scheduler, this.id, null);\n }\n }\n\n protected _execute(state: T, _delay: number): any {\n let errored: boolean = false;\n let errorValue: any;\n try {\n this.work(state);\n } catch (e) {\n errored = true;\n // HACK: Since code elsewhere is relying on the \"truthiness\" of the\n // return here, we can't have it return \"\" or 0 or false.\n // TODO: Clean this up when we refactor schedulers mid-version-8 or so.\n errorValue = e ? e : new Error('Scheduled action threw falsy error');\n }\n if (errored) {\n this.unsubscribe();\n return errorValue;\n }\n }\n\n unsubscribe() {\n if (!this.closed) {\n const { id, scheduler } = this;\n const { actions } = scheduler;\n\n this.work = this.state = this.scheduler = null!;\n this.pending = false;\n\n arrRemove(actions, this);\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, null);\n }\n\n this.delay = null!;\n super.unsubscribe();\n }\n }\n}\n", "import { Action } from './scheduler/Action';\nimport { Subscription } from './Subscription';\nimport { SchedulerLike, SchedulerAction } from './types';\nimport { dateTimestampProvider } from './scheduler/dateTimestampProvider';\n\n/**\n * An execution context and a data structure to order tasks and schedule their\n * execution. Provides a notion of (potentially virtual) time, through the\n * `now()` getter method.\n *\n * Each unit of work in a Scheduler is called an `Action`.\n *\n * ```ts\n * class Scheduler {\n * now(): number;\n * schedule(work, delay?, state?): Subscription;\n * }\n * ```\n *\n * @class Scheduler\n * @deprecated Scheduler is an internal implementation detail of RxJS, and\n * should not be used directly. Rather, create your own class and implement\n * {@link SchedulerLike}. Will be made internal in v8.\n */\nexport class Scheduler implements SchedulerLike {\n public static now: () => number = dateTimestampProvider.now;\n\n constructor(private schedulerActionCtor: typeof Action, now: () => number = Scheduler.now) {\n this.now = now;\n }\n\n /**\n * A getter method that returns a number representing the current time\n * (at the time this function was called) according to the scheduler's own\n * internal clock.\n * @return {number} A number that represents the current time. May or may not\n * have a relation to wall-clock time. May or may not refer to a time unit\n * (e.g. milliseconds).\n */\n public now: () => number;\n\n /**\n * Schedules a function, `work`, for execution. May happen at some point in\n * the future, according to the `delay` parameter, if specified. May be passed\n * some context object, `state`, which will be passed to the `work` function.\n *\n * The given arguments will be processed an stored as an Action object in a\n * queue of actions.\n *\n * @param {function(state: ?T): ?Subscription} work A function representing a\n * task, or some unit of work to be executed by the Scheduler.\n * @param {number} [delay] Time to wait before executing the work, where the\n * time unit is implicit and defined by the Scheduler itself.\n * @param {T} [state] Some contextual data that the `work` function uses when\n * called by the Scheduler.\n * @return {Subscription} A subscription in order to be able to unsubscribe\n * the scheduled work.\n */\n public schedule(work: (this: SchedulerAction, state?: T) => void, delay: number = 0, state?: T): Subscription {\n return new this.schedulerActionCtor(this, work).schedule(state, delay);\n }\n}\n", "import { Scheduler } from '../Scheduler';\nimport { Action } from './Action';\nimport { AsyncAction } from './AsyncAction';\nimport { TimerHandle } from './timerHandle';\n\nexport class AsyncScheduler extends Scheduler {\n public actions: Array> = [];\n /**\n * A flag to indicate whether the Scheduler is currently executing a batch of\n * queued actions.\n * @type {boolean}\n * @internal\n */\n public _active: boolean = false;\n /**\n * An internal ID used to track the latest asynchronous task such as those\n * coming from `setTimeout`, `setInterval`, `requestAnimationFrame`, and\n * others.\n * @type {any}\n * @internal\n */\n public _scheduled: TimerHandle | undefined;\n\n constructor(SchedulerAction: typeof Action, now: () => number = Scheduler.now) {\n super(SchedulerAction, now);\n }\n\n public flush(action: AsyncAction): void {\n const { actions } = this;\n\n if (this._active) {\n actions.push(action);\n return;\n }\n\n let error: any;\n this._active = true;\n\n do {\n if ((error = action.execute(action.state, action.delay))) {\n break;\n }\n } while ((action = actions.shift()!)); // exhaust the scheduler queue\n\n this._active = false;\n\n if (error) {\n while ((action = actions.shift()!)) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n", "import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\n\n/**\n *\n * Async Scheduler\n *\n * Schedule task as if you used setTimeout(task, duration)\n *\n * `async` scheduler schedules tasks asynchronously, by putting them on the JavaScript\n * event loop queue. It is best used to delay tasks in time or to schedule tasks repeating\n * in intervals.\n *\n * If you just want to \"defer\" task, that is to perform it right after currently\n * executing synchronous code ends (commonly achieved by `setTimeout(deferredTask, 0)`),\n * better choice will be the {@link asapScheduler} scheduler.\n *\n * ## Examples\n * Use async scheduler to delay task\n * ```ts\n * import { asyncScheduler } from 'rxjs';\n *\n * const task = () => console.log('it works!');\n *\n * asyncScheduler.schedule(task, 2000);\n *\n * // After 2 seconds logs:\n * // \"it works!\"\n * ```\n *\n * Use async scheduler to repeat task in intervals\n * ```ts\n * import { asyncScheduler } from 'rxjs';\n *\n * function task(state) {\n * console.log(state);\n * this.schedule(state + 1, 1000); // `this` references currently executing Action,\n * // which we reschedule with new state and delay\n * }\n *\n * asyncScheduler.schedule(task, 3000, 0);\n *\n * // Logs:\n * // 0 after 3s\n * // 1 after 4s\n * // 2 after 5s\n * // 3 after 6s\n * ```\n */\n\nexport const asyncScheduler = new AsyncScheduler(AsyncAction);\n\n/**\n * @deprecated Renamed to {@link asyncScheduler}. Will be removed in v8.\n */\nexport const async = asyncScheduler;\n", "import { AsyncAction } from './AsyncAction';\nimport { Subscription } from '../Subscription';\nimport { QueueScheduler } from './QueueScheduler';\nimport { SchedulerAction } from '../types';\nimport { TimerHandle } from './timerHandle';\n\nexport class QueueAction extends AsyncAction {\n constructor(protected scheduler: QueueScheduler, protected work: (this: SchedulerAction, state?: T) => void) {\n super(scheduler, work);\n }\n\n public schedule(state?: T, delay: number = 0): Subscription {\n if (delay > 0) {\n return super.schedule(state, delay);\n }\n this.delay = delay;\n this.state = state;\n this.scheduler.flush(this);\n return this;\n }\n\n public execute(state: T, delay: number): any {\n return delay > 0 || this.closed ? super.execute(state, delay) : this._execute(state, delay);\n }\n\n protected requestAsyncId(scheduler: QueueScheduler, id?: TimerHandle, delay: number = 0): TimerHandle {\n // If delay exists and is greater than 0, or if the delay is null (the\n // action wasn't rescheduled) but was originally scheduled as an async\n // action, then recycle as an async action.\n\n if ((delay != null && delay > 0) || (delay == null && this.delay > 0)) {\n return super.requestAsyncId(scheduler, id, delay);\n }\n\n // Otherwise flush the scheduler starting with this action.\n scheduler.flush(this);\n\n // HACK: In the past, this was returning `void`. However, `void` isn't a valid\n // `TimerHandle`, and generally the return value here isn't really used. So the\n // compromise is to return `0` which is both \"falsy\" and a valid `TimerHandle`,\n // as opposed to refactoring every other instanceo of `requestAsyncId`.\n return 0;\n }\n}\n", "import { AsyncScheduler } from './AsyncScheduler';\n\nexport class QueueScheduler extends AsyncScheduler {\n}\n", "import { QueueAction } from './QueueAction';\nimport { QueueScheduler } from './QueueScheduler';\n\n/**\n *\n * Queue Scheduler\n *\n * Put every next task on a queue, instead of executing it immediately\n *\n * `queue` scheduler, when used with delay, behaves the same as {@link asyncScheduler} scheduler.\n *\n * When used without delay, it schedules given task synchronously - executes it right when\n * it is scheduled. However when called recursively, that is when inside the scheduled task,\n * another task is scheduled with queue scheduler, instead of executing immediately as well,\n * that task will be put on a queue and wait for current one to finish.\n *\n * This means that when you execute task with `queue` scheduler, you are sure it will end\n * before any other task scheduled with that scheduler will start.\n *\n * ## Examples\n * Schedule recursively first, then do something\n * ```ts\n * import { queueScheduler } from 'rxjs';\n *\n * queueScheduler.schedule(() => {\n * queueScheduler.schedule(() => console.log('second')); // will not happen now, but will be put on a queue\n *\n * console.log('first');\n * });\n *\n * // Logs:\n * // \"first\"\n * // \"second\"\n * ```\n *\n * Reschedule itself recursively\n * ```ts\n * import { queueScheduler } from 'rxjs';\n *\n * queueScheduler.schedule(function(state) {\n * if (state !== 0) {\n * console.log('before', state);\n * this.schedule(state - 1); // `this` references currently executing Action,\n * // which we reschedule with new state\n * console.log('after', state);\n * }\n * }, 0, 3);\n *\n * // In scheduler that runs recursively, you would expect:\n * // \"before\", 3\n * // \"before\", 2\n * // \"before\", 1\n * // \"after\", 1\n * // \"after\", 2\n * // \"after\", 3\n *\n * // But with queue it logs:\n * // \"before\", 3\n * // \"after\", 3\n * // \"before\", 2\n * // \"after\", 2\n * // \"before\", 1\n * // \"after\", 1\n * ```\n */\n\nexport const queueScheduler = new QueueScheduler(QueueAction);\n\n/**\n * @deprecated Renamed to {@link queueScheduler}. Will be removed in v8.\n */\nexport const queue = queueScheduler;\n", "import { AsyncAction } from './AsyncAction';\nimport { AnimationFrameScheduler } from './AnimationFrameScheduler';\nimport { SchedulerAction } from '../types';\nimport { animationFrameProvider } from './animationFrameProvider';\nimport { TimerHandle } from './timerHandle';\n\nexport class AnimationFrameAction extends AsyncAction {\n constructor(protected scheduler: AnimationFrameScheduler, protected work: (this: SchedulerAction, state?: T) => void) {\n super(scheduler, work);\n }\n\n protected requestAsyncId(scheduler: AnimationFrameScheduler, id?: TimerHandle, delay: number = 0): TimerHandle {\n // If delay is greater than 0, request as an async action.\n if (delay !== null && delay > 0) {\n return super.requestAsyncId(scheduler, id, delay);\n }\n // Push the action to the end of the scheduler queue.\n scheduler.actions.push(this);\n // If an animation frame has already been requested, don't request another\n // one. If an animation frame hasn't been requested yet, request one. Return\n // the current animation frame request id.\n return scheduler._scheduled || (scheduler._scheduled = animationFrameProvider.requestAnimationFrame(() => scheduler.flush(undefined)));\n }\n\n protected recycleAsyncId(scheduler: AnimationFrameScheduler, id?: TimerHandle, delay: number = 0): TimerHandle | undefined {\n // If delay exists and is greater than 0, or if the delay is null (the\n // action wasn't rescheduled) but was originally scheduled as an async\n // action, then recycle as an async action.\n if (delay != null ? delay > 0 : this.delay > 0) {\n return super.recycleAsyncId(scheduler, id, delay);\n }\n // If the scheduler queue has no remaining actions with the same async id,\n // cancel the requested animation frame and set the scheduled flag to\n // undefined so the next AnimationFrameAction will request its own.\n const { actions } = scheduler;\n if (id != null && actions[actions.length - 1]?.id !== id) {\n animationFrameProvider.cancelAnimationFrame(id as number);\n scheduler._scheduled = undefined;\n }\n // Return undefined so the action knows to request a new async id if it's rescheduled.\n return undefined;\n }\n}\n", "import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\n\nexport class AnimationFrameScheduler extends AsyncScheduler {\n public flush(action?: AsyncAction): void {\n this._active = true;\n // The async id that effects a call to flush is stored in _scheduled.\n // Before executing an action, it's necessary to check the action's async\n // id to determine whether it's supposed to be executed in the current\n // flush.\n // Previous implementations of this method used a count to determine this,\n // but that was unsound, as actions that are unsubscribed - i.e. cancelled -\n // are removed from the actions array and that can shift actions that are\n // scheduled to be executed in a subsequent flush into positions at which\n // they are executed within the current flush.\n const flushId = this._scheduled;\n this._scheduled = undefined;\n\n const { actions } = this;\n let error: any;\n action = action || actions.shift()!;\n\n do {\n if ((error = action.execute(action.state, action.delay))) {\n break;\n }\n } while ((action = actions[0]) && action.id === flushId && actions.shift());\n\n this._active = false;\n\n if (error) {\n while ((action = actions[0]) && action.id === flushId && actions.shift()) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n", "import { AnimationFrameAction } from './AnimationFrameAction';\nimport { AnimationFrameScheduler } from './AnimationFrameScheduler';\n\n/**\n *\n * Animation Frame Scheduler\n *\n * Perform task when `window.requestAnimationFrame` would fire\n *\n * When `animationFrame` scheduler is used with delay, it will fall back to {@link asyncScheduler} scheduler\n * behaviour.\n *\n * Without delay, `animationFrame` scheduler can be used to create smooth browser animations.\n * It makes sure scheduled task will happen just before next browser content repaint,\n * thus performing animations as efficiently as possible.\n *\n * ## Example\n * Schedule div height animation\n * ```ts\n * // html:
\n * import { animationFrameScheduler } from 'rxjs';\n *\n * const div = document.querySelector('div');\n *\n * animationFrameScheduler.schedule(function(height) {\n * div.style.height = height + \"px\";\n *\n * this.schedule(height + 1); // `this` references currently executing Action,\n * // which we reschedule with new state\n * }, 0, 0);\n *\n * // You will see a div element growing in height\n * ```\n */\n\nexport const animationFrameScheduler = new AnimationFrameScheduler(AnimationFrameAction);\n\n/**\n * @deprecated Renamed to {@link animationFrameScheduler}. Will be removed in v8.\n */\nexport const animationFrame = animationFrameScheduler;\n", "import { Observable } from '../Observable';\nimport { SchedulerLike } from '../types';\n\n/**\n * A simple Observable that emits no items to the Observer and immediately\n * emits a complete notification.\n *\n * Just emits 'complete', and nothing else.\n *\n * ![](empty.png)\n *\n * A simple Observable that only emits the complete notification. It can be used\n * for composing with other Observables, such as in a {@link mergeMap}.\n *\n * ## Examples\n *\n * Log complete notification\n *\n * ```ts\n * import { EMPTY } from 'rxjs';\n *\n * EMPTY.subscribe({\n * next: () => console.log('Next'),\n * complete: () => console.log('Complete!')\n * });\n *\n * // Outputs\n * // Complete!\n * ```\n *\n * Emit the number 7, then complete\n *\n * ```ts\n * import { EMPTY, startWith } from 'rxjs';\n *\n * const result = EMPTY.pipe(startWith(7));\n * result.subscribe(x => console.log(x));\n *\n * // Outputs\n * // 7\n * ```\n *\n * Map and flatten only odd numbers to the sequence `'a'`, `'b'`, `'c'`\n *\n * ```ts\n * import { interval, mergeMap, of, EMPTY } from 'rxjs';\n *\n * const interval$ = interval(1000);\n * const result = interval$.pipe(\n * mergeMap(x => x % 2 === 1 ? of('a', 'b', 'c') : EMPTY),\n * );\n * result.subscribe(x => console.log(x));\n *\n * // Results in the following to the console:\n * // x is equal to the count on the interval, e.g. (0, 1, 2, 3, ...)\n * // x will occur every 1000ms\n * // if x % 2 is equal to 1, print a, b, c (each on its own)\n * // if x % 2 is not equal to 1, nothing will be output\n * ```\n *\n * @see {@link Observable}\n * @see {@link NEVER}\n * @see {@link of}\n * @see {@link throwError}\n */\nexport const EMPTY = new Observable((subscriber) => subscriber.complete());\n\n/**\n * @param scheduler A {@link SchedulerLike} to use for scheduling\n * the emission of the complete notification.\n * @deprecated Replaced with the {@link EMPTY} constant or {@link scheduled} (e.g. `scheduled([], scheduler)`). Will be removed in v8.\n */\nexport function empty(scheduler?: SchedulerLike) {\n return scheduler ? emptyScheduled(scheduler) : EMPTY;\n}\n\nfunction emptyScheduled(scheduler: SchedulerLike) {\n return new Observable((subscriber) => scheduler.schedule(() => subscriber.complete()));\n}\n", "import { SchedulerLike } from '../types';\nimport { isFunction } from './isFunction';\n\nexport function isScheduler(value: any): value is SchedulerLike {\n return value && isFunction(value.schedule);\n}\n", "import { SchedulerLike } from '../types';\nimport { isFunction } from './isFunction';\nimport { isScheduler } from './isScheduler';\n\nfunction last(arr: T[]): T | undefined {\n return arr[arr.length - 1];\n}\n\nexport function popResultSelector(args: any[]): ((...args: unknown[]) => unknown) | undefined {\n return isFunction(last(args)) ? args.pop() : undefined;\n}\n\nexport function popScheduler(args: any[]): SchedulerLike | undefined {\n return isScheduler(last(args)) ? args.pop() : undefined;\n}\n\nexport function popNumber(args: any[], defaultValue: number): number {\n return typeof last(args) === 'number' ? args.pop()! : defaultValue;\n}\n", "export const isArrayLike = ((x: any): x is ArrayLike => x && typeof x.length === 'number' && typeof x !== 'function');", "import { isFunction } from \"./isFunction\";\n\n/**\n * Tests to see if the object is \"thennable\".\n * @param value the object to test\n */\nexport function isPromise(value: any): value is PromiseLike {\n return isFunction(value?.then);\n}\n", "import { InteropObservable } from '../types';\nimport { observable as Symbol_observable } from '../symbol/observable';\nimport { isFunction } from './isFunction';\n\n/** Identifies an input as being Observable (but not necessary an Rx Observable) */\nexport function isInteropObservable(input: any): input is InteropObservable {\n return isFunction(input[Symbol_observable]);\n}\n", "import { isFunction } from './isFunction';\n\nexport function isAsyncIterable(obj: any): obj is AsyncIterable {\n return Symbol.asyncIterator && isFunction(obj?.[Symbol.asyncIterator]);\n}\n", "/**\n * Creates the TypeError to throw if an invalid object is passed to `from` or `scheduled`.\n * @param input The object that was passed.\n */\nexport function createInvalidObservableTypeError(input: any) {\n // TODO: We should create error codes that can be looked up, so this can be less verbose.\n return new TypeError(\n `You provided ${\n input !== null && typeof input === 'object' ? 'an invalid object' : `'${input}'`\n } where a stream was expected. You can provide an Observable, Promise, ReadableStream, Array, AsyncIterable, or Iterable.`\n );\n}\n", "export function getSymbolIterator(): symbol {\n if (typeof Symbol !== 'function' || !Symbol.iterator) {\n return '@@iterator' as any;\n }\n\n return Symbol.iterator;\n}\n\nexport const iterator = getSymbolIterator();\n", "import { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { isFunction } from './isFunction';\n\n/** Identifies an input as being an Iterable */\nexport function isIterable(input: any): input is Iterable {\n return isFunction(input?.[Symbol_iterator]);\n}\n", "import { ReadableStreamLike } from '../types';\nimport { isFunction } from './isFunction';\n\nexport async function* readableStreamLikeToAsyncGenerator(readableStream: ReadableStreamLike): AsyncGenerator {\n const reader = readableStream.getReader();\n try {\n while (true) {\n const { value, done } = await reader.read();\n if (done) {\n return;\n }\n yield value!;\n }\n } finally {\n reader.releaseLock();\n }\n}\n\nexport function isReadableStreamLike(obj: any): obj is ReadableStreamLike {\n // We don't want to use instanceof checks because they would return\n // false for instances from another Realm, like an