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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,148 @@ | ||
| // Copyright 2019-2024 The Liqo Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package ipam | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| klog "k8s.io/klog/v2" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
|
|
||
| ipamv1alpha1 "github.com/liqotech/liqo/apis/ipam/v1alpha1" | ||
| "github.com/liqotech/liqo/pkg/consts" | ||
| ) | ||
|
|
||
| // +kubebuilder:rbac:groups=ipam.liqo.io,resources=ips,verbs=get;list;watch | ||
| // +kubebuilder:rbac:groups=ipam.liqo.io,resources=networks,verbs=get;list;watch | ||
|
|
||
| type ipCidr struct { | ||
| ip string | ||
| cidr string | ||
| } | ||
|
|
||
| func (lipam *LiqoIPAM) initialize(ctx context.Context) error { | ||
| if err := lipam.initializeNetworks(ctx); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if err := lipam.initializeIPs(ctx); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| klog.Info("IPAM initialized") | ||
| return nil | ||
| } | ||
|
|
||
| func (lipam *LiqoIPAM) initializeNetworks(ctx context.Context) error { | ||
| // Initialize the networks. | ||
| nets, err := lipam.getReservedNetworks(ctx) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| for _, net := range nets { | ||
| if err := lipam.reserveNetwork(net); err != nil { | ||
| klog.Errorf("Failed to reserve network %s: %v", net, err) | ||
| return err | ||
| } | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func (lipam *LiqoIPAM) initializeIPs(ctx context.Context) error { | ||
| // Initialize the IPs. | ||
| ips, err := lipam.getReservedIPs(ctx) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| for _, ip := range ips { | ||
| if err := lipam.reserveIP(ip.ip, ip.cidr); err != nil { | ||
| klog.Errorf("Failed to reserve IP %s in network %s: %v", ip.ip, ip.cidr, err) | ||
| return err | ||
| } | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func (lipam *LiqoIPAM) getReservedNetworks(ctx context.Context) ([]string, error) { | ||
| var nets []string | ||
| var networks ipamv1alpha1.NetworkList | ||
| if err := lipam.Options.Client.List(ctx, &networks); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| for i := range networks.Items { | ||
| net := &networks.Items[i] | ||
|
|
||
| var cidr string | ||
| switch { | ||
| case net.Labels != nil && net.Labels[consts.NetworkNotRemappedLabelKey] == consts.NetworkNotRemappedLabelValue: | ||
| cidr = net.Spec.CIDR.String() | ||
| default: | ||
| cidr = net.Status.CIDR.String() | ||
| } | ||
| if cidr == "" { | ||
| klog.Warningf("Network %s has no CIDR", net.Name) | ||
| continue | ||
| } | ||
|
|
||
| nets = append(nets, cidr) | ||
| } | ||
|
|
||
| return nets, nil | ||
| } | ||
|
|
||
| func (lipam *LiqoIPAM) getReservedIPs(ctx context.Context) ([]ipCidr, error) { | ||
| var ips []ipCidr | ||
| var ipList ipamv1alpha1.IPList | ||
| if err := lipam.Options.Client.List(ctx, &ipList); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| for i := range ipList.Items { | ||
| ip := &ipList.Items[i] | ||
|
|
||
| address := ip.Status.IP.String() | ||
| if address == "" { | ||
| klog.Warningf("IP %s has no address", ip.Name) | ||
| continue | ||
| } | ||
|
|
||
| cidr := ip.Status.CIDR.String() | ||
| if cidr == "" { | ||
| klog.Warningf("IP %s has no CIDR", ip.Name) | ||
| continue | ||
| } | ||
|
|
||
| ips = append(ips, ipCidr{ip: address, cidr: cidr}) | ||
| } | ||
|
|
||
| return ips, nil | ||
| } | ||
|
|
||
| func (lipam *LiqoIPAM) reserveNetwork(cidr string) error { | ||
| // TODO: Reserve the network. | ||
| klog.Infof("Reserved network %s", cidr) | ||
| return nil | ||
| } | ||
|
|
||
| func (lipam *LiqoIPAM) reserveIP(ip string, cidr string) error { | ||
| // TODO: Reserve the IP. | ||
| klog.Infof("Reserved IP %s in network %s", ip, cidr) | ||
| return nil | ||
| } |
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