From 11bc2201210dc5b69f273d6d53f0cea0dc5460a0 Mon Sep 17 00:00:00 2001 From: Rishabh Singhvi Date: Tue, 2 May 2023 20:46:39 +0000 Subject: [PATCH] Initial commit --- .gitignore | 1 + Dockerfile | 4 + Makefile | 33 ++ README.md | 8 +- cmd/main.go | 173 +++++++++ go.mod | 67 ++++ go.sum | 605 ++++++++++++++++++++++++++++++ modify.proto | 40 ++ pkg/client/csi_client.go | 74 ++++ pkg/client/fake_client.go | 77 ++++ pkg/controller/controller.go | 381 +++++++++++++++++++ pkg/controller/controller_test.go | 224 +++++++++++ pkg/controller/util.go | 13 + pkg/modifier/csi_modifier.go | 67 ++++ pkg/modifier/csi_modifier_test.go | 163 ++++++++ pkg/modifier/modifier.go | 9 + pkg/rpc/modify.pb.go | 381 +++++++++++++++++++ pkg/rpc/modify_grpc.pb.go | 137 +++++++ pkg/util/util.go | 42 +++ 19 files changed, 2493 insertions(+), 6 deletions(-) create mode 100644 .gitignore create mode 100644 Dockerfile create mode 100644 Makefile create mode 100644 cmd/main.go create mode 100644 go.mod create mode 100644 go.sum create mode 100644 modify.proto create mode 100644 pkg/client/csi_client.go create mode 100644 pkg/client/fake_client.go create mode 100644 pkg/controller/controller.go create mode 100644 pkg/controller/controller_test.go create mode 100644 pkg/controller/util.go create mode 100644 pkg/modifier/csi_modifier.go create mode 100644 pkg/modifier/csi_modifier_test.go create mode 100644 pkg/modifier/modifier.go create mode 100644 pkg/rpc/modify.pb.go create mode 100644 pkg/rpc/modify_grpc.pb.go create mode 100644 pkg/util/util.go diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..e660fd9 --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +bin/ diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..73d3ca5 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,4 @@ +FROM public.ecr.aws/eks-distro-build-tooling/eks-distro-minimal-base:latest.2 AS linux-amazon + +COPY ./main /bin/ebs-external-volume-modifier +ENTRYPOINT ["/bin/ebs-external-volume-modifier"] diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..6469a03 --- /dev/null +++ b/Makefile @@ -0,0 +1,33 @@ +PROTO_FILE=modify.proto +PROTO_GENERATED_FILES_PATH=pkg/rpc +VERSION="v0.1.0" + +.PHONY: all +all: build + +.PHONY: build +build: + go build -o bin/main -ldflags="-X 'main.version=$(VERSION)'" cmd/main.go + +.PHONY: proto +proto: + protoc --go_out=$(PROTO_GENERATED_FILES_PATH) --go_opt=paths=source_relative --go-grpc_out=$(PROTO_GENERATED_FILES_PATH) --go-grpc_opt=paths=source_relative $(PROTO_FILE) + +.PHONY: test +test: + go test ./... -race + +.PHONY: clean +clean: + rm -rf bin/ + + +.PHONY: check +check: check-proto + +.PHONY: check-proto +check-proto: + $(eval TMPDIR := $(shell mktemp -d)) + protoc --go_out=$(TMPDIR) --go_opt=paths=source_relative --go-grpc_out=$(TMPDIR) --go-grpc_opt=paths=source_relative $(PROTO_FILE) + diff -qr $(TMPDIR) $(PROTO_GENERATED_FILES_PATH) || (printf "\nThe proto file seems to have been modified. PLease run `make proto`."; exit 1) + rm -rf $(TMPDIR) \ No newline at end of file diff --git a/README.md b/README.md index 847260c..01b866a 100644 --- a/README.md +++ b/README.md @@ -1,11 +1,7 @@ -## My Project +## volume-modifier-for-k8s -TODO: Fill this README out! +volume-modifier-for-k8s is a sidecar deployed alongside CSI drivers to enable volume modification through annotations on the PVC. -Be sure to: - -* Change the title in this README -* Edit your repository description on GitHub ## Security diff --git a/cmd/main.go b/cmd/main.go new file mode 100644 index 0000000..0ee0def --- /dev/null +++ b/cmd/main.go @@ -0,0 +1,173 @@ +package main + +import ( + "context" + "flag" + "fmt" + "net/http" + "os" + "time" + + csi "github.com/awslabs/volume-modifier-for-k8s/pkg/client" + "github.com/awslabs/volume-modifier-for-k8s/pkg/controller" + "github.com/awslabs/volume-modifier-for-k8s/pkg/modifier" + "github.com/awslabs/volume-modifier-for-k8s/pkg/util" + "github.com/kubernetes-csi/csi-lib-utils/leaderelection" + "github.com/kubernetes-csi/csi-lib-utils/metrics" + "k8s.io/apimachinery/pkg/util/wait" + "k8s.io/client-go/informers" + "k8s.io/client-go/kubernetes" + "k8s.io/client-go/rest" + "k8s.io/client-go/tools/clientcmd" + "k8s.io/client-go/util/workqueue" + "k8s.io/klog/v2" +) + +var ( + clientConfigUrl = flag.String("client-config-url", "", "URL to build a client config from. Either this or kubeconfig needs to be set if the provisioner is being run out of cluster.") + kubeConfig = flag.String("kubeconfig", "", "Absolute path to the kubeconfig") + resyncPeriod = flag.Duration("resync-period", time.Minute*10, "Resync period for cache") + workers = flag.Int("workers", 10, "Concurrency to process multiple modification requests") + + csiAddress = flag.String("csi-address", "/run/csi/socket", "Address of the CSI driver socket.") + timeout = flag.Duration("timeout", 10*time.Second, "Timeout for waiting for CSI driver socket.") + + showVersion = flag.Bool("version", false, "Show version") + + retryIntervalStart = flag.Duration("retry-interval-start", time.Second, "Initial retry interval of failed volume modification. It exponentially increases with each failure, up to retry-interval-max.") + retryIntervalMax = flag.Duration("retry-interval-max", 5*time.Minute, "Maximum retry interval of failed volume modification.") + + enableLeaderElection = flag.Bool("leader-election", false, "Enable leader election.") + leaderElectionNamespace = flag.String("leader-election-namespace", "", "Namespace where the leader election resource lives. Defaults to the pod namespace if not set.") + leaderElectionLeaseDuration = flag.Duration("leader-election-lease-duration", 15*time.Second, "Duration, in seconds, that non-leader candidates will wait to force acquire leadership. Defaults to 15 seconds.") + leaderElectionRenewDeadline = flag.Duration("leader-election-renew-deadline", 10*time.Second, "Duration, in seconds, that the acting leader will retry refreshing leadership before giving up. Defaults to 10 seconds.") + leaderElectionRetryPeriod = flag.Duration("leader-election-retry-period", 5*time.Second, "Duration, in seconds, the LeaderElector clients should wait between tries of actions. Defaults to 5 seconds.") + + httpEndpoint = flag.String("http-endpoint", "", "The TCP network address where the HTTP server for diagnostics, including metrics and leader election health check, will listen (example: `:8080`). The default is empty string, which means the server is disabled. Only one of `--metrics-address` and `--http-endpoint` can be set.") + metricsPath = flag.String("metrics-path", "/metrics", "The HTTP path where prometheus metrics will be exposed. Default is `/metrics`.") + + kubeAPIQPS = flag.Float64("kube-api-qps", 5, "QPS to use while communicating with the kubernetes apiserver. Defaults to 5.0.") + kubeAPIBurst = flag.Int("kube-api-burst", 10, "Burst to use while communicating with the kubernetes apiserver. Defaults to 10.") + + // Passed through ldflags. + version = "" +) + +func main() { + klog.InitFlags(nil) + flag.Set("logtostderr", "true") + flag.Parse() + + if *showVersion { + fmt.Println(os.Args[0], version) + os.Exit(0) + } + klog.Infof("Version : %s", version) + + addr := *httpEndpoint + var config *rest.Config + var err error + if *clientConfigUrl != "" || *kubeConfig != "" { + config, err = clientcmd.BuildConfigFromFlags(*clientConfigUrl, *kubeConfig) + } else { + config, err = rest.InClusterConfig() + } + if err != nil { + klog.Fatal(err.Error()) + } + + config.QPS = float32(*kubeAPIQPS) + config.Burst = *kubeAPIBurst + + kubeClient, err := kubernetes.NewForConfig(config) + if err != nil { + klog.Fatal(err.Error()) + } + + informerFactory := informers.NewSharedInformerFactory(kubeClient, *resyncPeriod) + mux := http.NewServeMux() + metricsManager := metrics.NewCSIMetricsManager("" /* driverName */) + csiClient, err := csi.New(*csiAddress, *timeout, metricsManager) + if err != nil { + klog.Fatal(err.Error()) + } + if err := csiClient.SupportsVolumeModification(context.TODO()); err != nil { + klog.Fatalf("CSI driver does not support volume modification: %v", err) + } + + driverName, err := getDriverName(csiClient, *timeout) + if err != nil { + klog.Fatal(fmt.Errorf("get driver name failed: %v", err)) + } + klog.V(2).Infof("CSI driver name: %q", driverName) + + csiModifier, err := modifier.NewFromClient( + driverName, + csiClient, + kubeClient, + *timeout, + ) + if err != nil { + klog.Fatal(err.Error()) + } + + if addr != "" { + metricsManager.RegisterToServer(mux, *metricsPath) + metricsManager.SetDriverName(driverName) + go func() { + klog.Infof("ServeMux listening at %q", addr) + err := http.ListenAndServe(addr, mux) + if err != nil { + klog.Fatalf("Failed to start HTTP server at specified address (%q) and metrics path (%q): %s", addr, *metricsPath, err) + } + }() + } + + modifierName := csiModifier.Name() + mc := controller.NewModifyController( + modifierName, + csiModifier, + kubeClient, + *resyncPeriod, + informerFactory, + workqueue.NewItemExponentialFailureRateLimiter(*retryIntervalStart, *retryIntervalMax), + true, /* retryFailure */ + ) + + run := func(ctx context.Context) { + informerFactory.Start(wait.NeverStop) + mc.Run(*workers, ctx) + } + + if !*enableLeaderElection { + run(context.TODO()) + } else { + lockName := "volume-modifier-for-k8s-" + util.SanitizeName(modifierName) + leKubeClient, err := kubernetes.NewForConfig(config) + if err != nil { + klog.Fatal(err.Error()) + } + le := leaderelection.NewLeaderElection(leKubeClient, lockName, run) + if *httpEndpoint != "" { + le.PrepareHealthCheck(mux, leaderelection.DefaultHealthCheckTimeout) + } + + if *leaderElectionNamespace != "" { + le.WithNamespace(*leaderElectionNamespace) + } + + le.WithLeaseDuration(*leaderElectionLeaseDuration) + le.WithRenewDeadline(*leaderElectionRenewDeadline) + le.WithRetryPeriod(*leaderElectionRetryPeriod) + + if err := le.Run(); err != nil { + klog.Fatalf("error initializing leader election: %v", err) + } + } +} + +func getDriverName(client csi.Client, timeout time.Duration) (string, error) { + ctx, cancel := context.WithTimeout(context.Background(), timeout) + defer cancel() + return client.GetDriverName(ctx) +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..3896573 --- /dev/null +++ b/go.mod @@ -0,0 +1,67 @@ +module github.com/awslabs/volume-modifier-for-k8s + +go 1.19 + +require ( + github.com/golang/protobuf v1.5.3 + github.com/google/go-cmp v0.5.9 + github.com/kubernetes-csi/csi-lib-utils v0.13.0 + google.golang.org/grpc v1.54.0 + google.golang.org/protobuf v1.30.0 + k8s.io/api v0.27.1 + k8s.io/apimachinery v0.27.1 + k8s.io/client-go v0.27.1 + k8s.io/csi-translation-lib v0.27.1 + k8s.io/klog/v2 v2.90.1 + k8s.io/kubectl v0.27.1 +) + +require ( + github.com/beorn7/perks v1.0.1 // indirect + github.com/blang/semver/v4 v4.0.0 // indirect + github.com/cespare/xxhash/v2 v2.2.0 // indirect + github.com/container-storage-interface/spec v1.7.0 // indirect + github.com/davecgh/go-spew v1.1.1 // indirect + github.com/emicklei/go-restful/v3 v3.9.0 // indirect + github.com/evanphx/json-patch v4.12.0+incompatible // indirect + github.com/go-logr/logr v1.2.3 // indirect + github.com/go-openapi/jsonpointer v0.19.6 // indirect + github.com/go-openapi/jsonreference v0.20.1 // indirect + github.com/go-openapi/swag v0.22.3 // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect + github.com/google/gnostic v0.5.7-v3refs // indirect + github.com/google/gofuzz v1.2.0 // indirect + github.com/google/uuid v1.3.0 // indirect + github.com/imdario/mergo v0.3.12 // indirect + github.com/josharian/intern v1.0.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/mailru/easyjson v0.7.7 // indirect + github.com/matttproud/golang_protobuf_extensions v1.0.2 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect + github.com/pkg/errors v0.9.1 // indirect + github.com/prometheus/client_golang v1.14.0 // indirect + github.com/prometheus/client_model v0.3.0 // indirect + github.com/prometheus/common v0.37.0 // indirect + github.com/prometheus/procfs v0.8.0 // indirect + github.com/spf13/pflag v1.0.5 // indirect + golang.org/x/net v0.8.0 // indirect + golang.org/x/oauth2 v0.4.0 // indirect + golang.org/x/sys v0.6.0 // indirect + golang.org/x/term v0.6.0 // indirect + golang.org/x/text v0.8.0 // indirect + golang.org/x/time v0.0.0-20220210224613-90d013bbcef8 // indirect + google.golang.org/appengine v1.6.7 // indirect + google.golang.org/genproto v0.0.0-20230110181048-76db0878b65f // indirect + gopkg.in/inf.v0 v0.9.1 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect + k8s.io/component-base v0.27.1 // indirect + k8s.io/kube-openapi v0.0.0-20230308215209-15aac26d736a // indirect + k8s.io/utils v0.0.0-20230209194617-a36077c30491 // indirect + sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect + sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect + sigs.k8s.io/yaml v1.3.0 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..83129ea --- /dev/null +++ b/go.sum @@ -0,0 +1,605 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= +cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU= +cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY= +cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc= +cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0= +cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To= +cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4= +cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M= +cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc= +cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk= +cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs= +cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc= +cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY= +cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o= +cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE= +cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc= +cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg= +cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc= +cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ= +cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE= +cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk= +cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I= +cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw= +cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA= +cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU= +cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw= +cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos= +cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk= +cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs= +cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0= +dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo= +github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= +github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= +github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod 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v0.0.0-20221116044647-bc3834ca7abd/go.mod h1:B8JuhiUyNFVKdsE8h686QcCxMaH6HrOAZj4vswFpcB0= +sigs.k8s.io/structured-merge-diff/v4 v4.2.3 h1:PRbqxJClWWYMNV1dhaG4NsibJbArud9kFxnAMREiWFE= +sigs.k8s.io/structured-merge-diff/v4 v4.2.3/go.mod h1:qjx8mGObPmV2aSZepjQjbmb2ihdVs8cGKBraizNC69E= +sigs.k8s.io/yaml v1.3.0 h1:a2VclLzOGrwOHDiV8EfBGhvjHvP46CtW5j6POvhYGGo= +sigs.k8s.io/yaml v1.3.0/go.mod h1:GeOyir5tyXNByN85N/dRIT9es5UQNerPYEKK56eTBm8= diff --git a/modify.proto b/modify.proto new file mode 100644 index 0000000..4c75d2b --- /dev/null +++ b/modify.proto @@ -0,0 +1,40 @@ +syntax = "proto3"; +package modify.v1; + +import "google/protobuf/descriptor.proto"; + +option go_package = "github.com/kubernetes-sigs/aws-ebs-csi-driver/pkg/volumemodifier/rpc"; + +service Modify { + rpc GetCSIDriverModificationCapability(GetCSIDriverModificationCapabilityRequest) + returns (GetCSIDriverModificationCapabilityResponse) {} + + rpc ModifyVolumeProperties(ModifyVolumePropertiesRequest) + returns (ModifyVolumePropertiesResponse) {} +} + +message GetCSIDriverModificationCapabilityRequest { + // Intentionally empty. +} + +message GetCSIDriverModificationCapabilityResponse { + // Intentionally empty. +} + +message ModifyVolumePropertiesRequest { + // Name of the volume. + // This field is REQUIRED. + string name = 1; + + // New volume attributes. + // This field is REQUIRED. + map parameters = 2; + + // Contains additional information that + // may be required by driver. + map context = 3; +} + +message ModifyVolumePropertiesResponse { + // Intentionally empty. +} \ No newline at end of file diff --git a/pkg/client/csi_client.go b/pkg/client/csi_client.go new file mode 100644 index 0000000..aa792ec --- /dev/null +++ b/pkg/client/csi_client.go @@ -0,0 +1,74 @@ +package client + +import ( + "context" + "fmt" + "time" + + "github.com/kubernetes-csi/csi-lib-utils/connection" + "github.com/kubernetes-csi/csi-lib-utils/metrics" + "github.com/kubernetes-csi/csi-lib-utils/rpc" + "google.golang.org/grpc" + "k8s.io/klog/v2" + + modifyrpc "github.com/awslabs/volume-modifier-for-k8s/pkg/rpc" +) + +type Client interface { + GetDriverName(context.Context) (string, error) + + SupportsVolumeModification(context.Context) error + + Modify(ctx context.Context, volumeID string, params, reqContext map[string]string) error + + CloseConnection() +} + +func New(addr string, timeout time.Duration, metricsmanager metrics.CSIMetricsManager) (Client, error) { + conn, err := connection.Connect(addr, metricsmanager, connection.OnConnectionLoss(connection.ExitOnConnectionLoss())) + if err != nil { + return nil, fmt.Errorf("failed to connect to CSI driver: %w", err) + } + + err = rpc.ProbeForever(conn, timeout) + if err != nil { + return nil, fmt.Errorf("failed probing CSI driver: %w", err) + } + + return &client{ + conn: conn, + }, nil +} + +type client struct { + conn *grpc.ClientConn +} + +func (c *client) GetDriverName(ctx context.Context) (string, error) { + return rpc.GetDriverName(ctx, c.conn) +} + +func (c *client) SupportsVolumeModification(ctx context.Context) error { + cc := modifyrpc.NewModifyClient(c.conn) + req := &modifyrpc.GetCSIDriverModificationCapabilityRequest{} + _, err := cc.GetCSIDriverModificationCapability(ctx, req) + return err +} + +func (c *client) Modify(ctx context.Context, volumeID string, params, reqContext map[string]string) error { + cc := modifyrpc.NewModifyClient(c.conn) + req := &modifyrpc.ModifyVolumePropertiesRequest{ + Name: volumeID, + Parameters: params, + Context: reqContext, + } + _, err := cc.ModifyVolumeProperties(ctx, req) + if err == nil { + klog.V(4).InfoS("Volume modification completed", "volumeID", volumeID) + } + return err +} + +func (c *client) CloseConnection() { + c.conn.Close() +} diff --git a/pkg/client/fake_client.go b/pkg/client/fake_client.go new file mode 100644 index 0000000..c4167c6 --- /dev/null +++ b/pkg/client/fake_client.go @@ -0,0 +1,77 @@ +package client + +import ( + "context" + "fmt" + "sync" +) + +func NewFakeClient( + name string, + driverSupportsModification bool, + modificationShouldFail bool, +) *FakeClient { + return &FakeClient{ + name: name, + driverSupportsModification: driverSupportsModification, + modificationShouldFail: modificationShouldFail, + } +} + +type FakeClient struct { + name string + driverSupportsModification bool + modifyCalledMu sync.Mutex + modifyCalled int + modificationShouldFail bool + closed bool + volumeID string + params map[string]string + reqContext map[string]string +} + +func (f *FakeClient) GetDriverName(context.Context) (string, error) { + return f.name, nil +} + +func (f *FakeClient) SupportsVolumeModification(context.Context) error { + if !f.driverSupportsModification { + return fmt.Errorf("does not support modification") + } + return nil +} + +func (f *FakeClient) Modify(ctx context.Context, volumeID string, params, reqContext map[string]string) error { + f.modifyCalledMu.Lock() + defer f.modifyCalledMu.Unlock() + f.modifyCalled++ + f.volumeID = volumeID + f.params = params + f.reqContext = reqContext + if f.modificationShouldFail { + return fmt.Errorf("modification failed") + } + return nil +} + +func (f *FakeClient) CloseConnection() { + f.closed = true +} + +func (f *FakeClient) GetVolumeName() string { + return f.volumeID +} + +func (f *FakeClient) GetParams() map[string]string { + return f.params +} + +func (f *FakeClient) GetReqContext() map[string]string { + return f.reqContext +} + +func (f *FakeClient) GetModifyCallCount() int { + f.modifyCalledMu.Lock() + defer f.modifyCalledMu.Unlock() + return f.modifyCalled +} diff --git a/pkg/controller/controller.go b/pkg/controller/controller.go new file mode 100644 index 0000000..1726cf2 --- /dev/null +++ b/pkg/controller/controller.go @@ -0,0 +1,381 @@ +package controller + +import ( + "context" + "fmt" + "strings" + "sync" + "time" + + "github.com/awslabs/volume-modifier-for-k8s/pkg/modifier" + "github.com/awslabs/volume-modifier-for-k8s/pkg/util" + v1 "k8s.io/api/core/v1" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/apimachinery/pkg/types" + "k8s.io/apimachinery/pkg/util/wait" + "k8s.io/client-go/informers" + "k8s.io/client-go/kubernetes" + corev1 "k8s.io/client-go/kubernetes/typed/core/v1" + "k8s.io/client-go/tools/cache" + "k8s.io/client-go/tools/record" + "k8s.io/client-go/util/workqueue" + "k8s.io/klog/v2" + "k8s.io/kubectl/pkg/scheme" +) + +type ModifyController interface { + Run(int, context.Context) +} + +func NewModifyController( + name string, + modifier modifier.Modifier, + kubeClient kubernetes.Interface, + resyncPeriod time.Duration, + informerFactory informers.SharedInformerFactory, + pvcRateLimiter workqueue.RateLimiter, + retryModificationFailures bool, +) ModifyController { + pvInformer := informerFactory.Core().V1().PersistentVolumes() + pvcInformer := informerFactory.Core().V1().PersistentVolumeClaims() + claimQueue := workqueue.NewNamedRateLimitingQueue(pvcRateLimiter, fmt.Sprintf("%s-modify-pvc", name)) + + eventBroadcaster := record.NewBroadcaster() + eventBroadcaster.StartLogging(klog.Infof) + eventBroadcaster.StartRecordingToSink(&corev1.EventSinkImpl{Interface: kubeClient.CoreV1().Events(v1.NamespaceAll)}) + eventRecorder := eventBroadcaster.NewRecorder(scheme.Scheme, v1.EventSource{Component: fmt.Sprintf("volume-modifier-for-k8s-%s", name)}) + + ctrl := &modifyController{ + name: name, + annPrefix: fmt.Sprintf(AnnotationPrefixPattern, name), + modifier: modifier, + kubeClient: kubeClient, + claimQueue: claimQueue, + pvSynced: pvInformer.Informer().HasSynced, + pvcSynced: pvcInformer.Informer().HasSynced, + volumes: pvInformer.Informer().GetStore(), + claims: pvcInformer.Informer().GetStore(), + eventRecorder: eventRecorder, + modificationInProgress: make(map[string]struct{}), + } + + pvcInformer.Informer().AddEventHandlerWithResyncPeriod(cache.ResourceEventHandlerFuncs{ + AddFunc: ctrl.addPVC, + UpdateFunc: ctrl.updatePVC, + DeleteFunc: ctrl.deletePVC, + }, resyncPeriod) + + return ctrl +} + +type modifyController struct { + name string + annPrefix string + modifier modifier.Modifier + kubeClient kubernetes.Interface + claimQueue workqueue.RateLimitingInterface + eventRecorder record.EventRecorder + pvSynced cache.InformerSynced + pvcSynced cache.InformerSynced + + modificationInProgress map[string]struct{} + modificationInProgressMu sync.Mutex + + volumes cache.Store + claims cache.Store + + retryFailures bool +} + +func (c *modifyController) Run(workers int, ctx context.Context) { + defer c.claimQueue.ShutDown() + + klog.InfoS("Starting external modifier", "name", c.name) + defer klog.InfoS("Shutting down external modifier", "name", c.name) + + stopCh := ctx.Done() + informersSyncd := []cache.InformerSynced{c.pvSynced, c.pvcSynced} + + if !cache.WaitForCacheSync(stopCh, informersSyncd...) { + klog.Errorf("Cannot sync pv or pvc caches") + return + } + + for i := 0; i < workers; i++ { + go wait.Until(c.syncPVCs, 0, stopCh) + } + + <-stopCh +} + +func (c *modifyController) addPVC(obj interface{}) { + objKey, err := getObjectKeys(obj) + if err != nil { + klog.ErrorS(err, "unable to add obj to claim queue") + return + } + c.claimQueue.Add(objKey) +} + +func (c *modifyController) updatePVC(old, new interface{}) { + klog.V(6).InfoS("Received update from shared informer", "old", old, "new", new) + + oldPvc, ok := old.(*v1.PersistentVolumeClaim) + if !ok || oldPvc == nil { + return + } + + newPvc, ok := new.(*v1.PersistentVolumeClaim) + if !ok || newPvc == nil { + return + } + + if c.needsProcessing(oldPvc, newPvc) { + c.addPVC(new) + } +} + +func (c *modifyController) deletePVC(obj interface{}) { + klog.V(6).InfoS("Received delete from shared informer", "obj", obj) + objKey, err := getObjectKeys(obj) + if err != nil { + return + } + c.claimQueue.Forget(objKey) +} + +func (c *modifyController) syncPVCs() { + key, quit := c.claimQueue.Get() + if quit { + return + } + defer c.claimQueue.Done(key) + + if err := c.syncPVC(key.(string)); err != nil { + klog.ErrorS(err, "error syncing PVC", "key", key) + if c.retryFailures { + c.claimQueue.AddRateLimited(key) + } + } else { + c.claimQueue.Forget(key) + } +} + +func (c *modifyController) syncPVC(key string) error { + klog.InfoS("Started PVC processing", "key", key) + namespace, name, err := cache.SplitMetaNamespaceKey(key) + if err != nil { + return fmt.Errorf("cannot get namespace and name from key (%s): %w", key, err) + } + + pvcObject, exists, err := c.claims.GetByKey(key) + if err != nil { + return fmt.Errorf("cannot get PVC for key (%s): %w", key, err) + } + + if !exists { + klog.InfoS("PVC is deleted or does not exist", "namespace", namespace, "name", name) + return nil + } + + pvc, ok := pvcObject.(*v1.PersistentVolumeClaim) + if !ok { + return fmt.Errorf("expected PVC for key (%s) but got %v", key, pvcObject) + } + + if pvc.Spec.VolumeName == "" { + klog.InfoS("PV bound to PVC is not created yet", "pvc", util.PVCKey(pvc)) + return nil + } + + volumeObj, exists, err := c.volumes.GetByKey(pvc.Spec.VolumeName) + if err != nil { + return fmt.Errorf("get PV %q of pvc %q failed: %v", pvc.Spec.VolumeName, util.PVCKey(pvc), err) + } + + if !exists { + klog.Warningf("PV %q bound to PVC %s not found", pvc.Spec.VolumeName, util.PVCKey(pvc)) + return nil + } + + pv, ok := volumeObj.(*v1.PersistentVolume) + if !ok { + return fmt.Errorf("expected volume but got %+v", volumeObj) + } + + if !c.pvcNeedsModification(pv, pvc) { + klog.InfoS("No need to modify PVC", "pvc", util.PVCKey(pvc)) + return nil + } + + return c.modifyPVC(pv, pvc) +} + +// Determines if the PVC needs modification. +func (c *modifyController) pvcNeedsModification(pv *v1.PersistentVolume, pvc *v1.PersistentVolumeClaim) bool { + // Check if there's already a modification going on. + if c.ifPVCModificationInProgress(pvc.Name) { + klog.InfoS("modification for pvc is already undergoing", "pvc", util.PVCKey(pvc)) + return false + } + + // Only Bound PVC can be modified + if pvc.Status.Phase != v1.ClaimBound { + klog.InfoS("pvc is not bound", "pvc", util.PVCKey(pvc)) + return false + } + + if pvc.Spec.VolumeName == "" { + klog.InfoS("volume name is empty", "pvc", util.PVCKey(pvc)) + return false + } + + if !c.annotationsUpdated(pvc.Annotations, pv.Annotations) { + klog.InfoS("annotations not updated", "pvc", util.PVCKey(pvc)) + return false + } + + return true +} + +func (c *modifyController) addPVCToInProgressList(pvc string) { + c.modificationInProgressMu.Lock() + defer c.modificationInProgressMu.Unlock() + c.modificationInProgress[pvc] = struct{}{} +} + +func (c *modifyController) ifPVCModificationInProgress(pvc string) bool { + c.modificationInProgressMu.Lock() + defer c.modificationInProgressMu.Unlock() + _, ok := c.modificationInProgress[pvc] + return ok +} + +func (c *modifyController) removePVCFromInProgressList(pvc string) { + c.modificationInProgressMu.Lock() + defer c.modificationInProgressMu.Unlock() + delete(c.modificationInProgress, pvc) +} + +func (c *modifyController) modifyPVC(pv *v1.PersistentVolume, pvc *v1.PersistentVolumeClaim) error { + c.addPVCToInProgressList(pvc.Name) + defer c.removePVCFromInProgressList(pvc.Name) + + params := make(map[string]string) + for key, value := range pvc.Annotations { + if c.isValidAnnotation(key) { + params[c.attributeFromValidAnnotation(key)] = value + } + } + + reqContext := make(map[string]string) + + c.eventRecorder.Event(pvc, v1.EventTypeNormal, VolumeModificationStarted, fmt.Sprintf("External modifier is modifying volume %s", pv.Name)) + + err := c.modifier.Modify(pv, params, reqContext) + if err != nil { + c.eventRecorder.Eventf(pvc, v1.EventTypeWarning, VolumeModificationFailed, err.Error()) + return fmt.Errorf("modification of volume %q failed by modifier %q: %w", pvc.Name, c.name, err) + } else { + c.eventRecorder.Eventf(pvc, v1.EventTypeNormal, VolumeModificationSuccessful, "External modifier has successfully modified volume %s", pv.Name) + } + + return c.markPVCModificationComplete(pv, params) +} + +func (c *modifyController) isValidAnnotation(ann string) bool { + return strings.HasPrefix(ann, fmt.Sprintf(AnnotationPrefixPattern, c.name)) && + !strings.HasSuffix(ann, "-status") +} + +func (c *modifyController) attributeFromValidAnnotation(ann string) string { + return strings.TrimPrefix(ann, fmt.Sprintf(AnnotationPrefixPattern, c.name)) +} + +func (c *modifyController) markPVCModificationComplete(oldPV *v1.PersistentVolume, params map[string]string) error { + newPV := oldPV.DeepCopy() + for key, value := range params { + newPV.Annotations[fmt.Sprintf("%s/%s", c.name, key)] = value + } + + _, err := c.patchPV(oldPV, newPV, true) + return err +} + +func (c *modifyController) patchPV(old, new *v1.PersistentVolume, addResourceVersionCheck bool) (*v1.PersistentVolume, error) { + patchBytes, err := util.GetPatchData(old, new) + if err != nil { + return old, fmt.Errorf("can't patch status of PV %s as patch data generation failed: %v", old.Name, err) + } + + updatedPV, err := c.kubeClient.CoreV1().PersistentVolumes(). + Patch(context.TODO(), old.Name, types.StrategicMergePatchType, patchBytes, metav1.PatchOptions{}) + + if err != nil { + return old, fmt.Errorf("can't patch PV %s with %v", old.Name, err) + } + + err = c.volumes.Update(updatedPV) + if err != nil { + return old, fmt.Errorf("error updating PV %s in local cache: %v", old.Name, err) + } + return updatedPV, nil +} + +// Check if annotations are updated. +func (c *modifyController) annotationsUpdated(pvcAnnotations, pvAnnotations map[string]string) bool { + m := make(map[string]string) + for key, value := range pvcAnnotations { + if c.isValidAnnotation(key) { + m[key] = value + } + } + + for key, value := range m { + if pvAnnotations[key] != value { + return true + } + } + + return false +} + +// Checks if a PVC needs to be processed after an Update. +// Gets a list of all annotations beginning with "/" both PVCs. +// Then checks if the annotations are different between the old and new PVCs. +// If any of them are, this PVC needs to be processed. +func (c *modifyController) needsProcessing(old *v1.PersistentVolumeClaim, new *v1.PersistentVolumeClaim) bool { + if old.ResourceVersion == new.ResourceVersion { + return false + } + + annotations := make(map[string]struct{}) + for key, _ := range new.Annotations { + if c.isValidAnnotation(key) { + annotations[key] = struct{}{} + } + } + + for a, _ := range annotations { + oldValue := old.Annotations[a] + newValue := new.Annotations[a] + + if oldValue != newValue { + return true + } + } + return false +} + +func getObjectKeys(obj interface{}) (string, error) { + if unknown, ok := obj.(cache.DeletedFinalStateUnknown); ok && unknown.Obj != nil { + obj = unknown.Obj + } + + objKey, err := cache.DeletionHandlingMetaNamespaceKeyFunc(obj) + if err != nil { + klog.Errorf("Failed to get key from object: %v", err) + return "", err + } + return objKey, nil +} diff --git a/pkg/controller/controller_test.go b/pkg/controller/controller_test.go new file mode 100644 index 0000000..24a0591 --- /dev/null +++ b/pkg/controller/controller_test.go @@ -0,0 +1,224 @@ +package controller + +import ( + "context" + "fmt" + "strings" + "testing" + "time" + + csi "github.com/awslabs/volume-modifier-for-k8s/pkg/client" + "github.com/awslabs/volume-modifier-for-k8s/pkg/modifier" + v1 "k8s.io/api/core/v1" + "k8s.io/apimachinery/pkg/api/resource" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/apimachinery/pkg/runtime" + "k8s.io/apimachinery/pkg/types" + "k8s.io/client-go/informers" + "k8s.io/client-go/kubernetes/fake" + "k8s.io/client-go/util/workqueue" +) + +const ( + namespace = "default" +) + +func TestControllerRun(t *testing.T) { + testCases := []struct { + name string + driverName string + clientReturnsError bool + pvc *v1.PersistentVolumeClaim + pv *v1.PersistentVolume + additionalPVCAnnotations map[string]string + expectedModifyVolumeCallCount int + expectInProgressModificationAnnotation bool + updatedCapacity string + expectSuccessfulModification bool + }{ + { + name: "volume modification succeeds after updating annotation", + driverName: "ebs.csi.aws.com", + pvc: newFakePVC(), + pv: newFakePV("testPVC", namespace, "test"), + additionalPVCAnnotations: map[string]string{ + "ebs.csi.aws.com/volumeType": "io2", + "ebs.csi.aws.com/iops": "5000", + }, + expectedModifyVolumeCallCount: 1, + expectSuccessfulModification: true, + }, + { + name: "volume modification fails after client returns error", + driverName: "ebs.csi.aws.com", + pvc: newFakePVC(), + pv: newFakePV("testPVC", namespace, "test"), + additionalPVCAnnotations: map[string]string{ + "ebs.csi.aws.com/volumeType": "io2", + "ebs.csi.aws.com/iops": "5000", + }, + expectedModifyVolumeCallCount: 1, + clientReturnsError: true, + expectSuccessfulModification: false, + }, + { + name: "no volume modification after PVC resync", + driverName: "ebs.csi.aws.com", + pvc: newFakePVC(), + pv: newFakePV("testPVC", namespace, "test"), + expectedModifyVolumeCallCount: 0, + expectSuccessfulModification: false, + }, + { + name: "no volume modification after non-annotation PVC update", + driverName: "ebs.csi.aws.com", + pvc: newFakePVC(), + pv: newFakePV("testPVC", namespace, "test"), + expectedModifyVolumeCallCount: 0, + updatedCapacity: "35Gi", + expectSuccessfulModification: false, + }, + } + + for _, tc := range testCases { + t.Run(tc.name, func(t *testing.T) { + client := csi.NewFakeClient(tc.driverName, true, tc.clientReturnsError) + driverName, _ := client.GetDriverName(context.TODO()) + + var objects []runtime.Object + if tc.pvc != nil { + if tc.additionalPVCAnnotations != nil { + for k, v := range tc.additionalPVCAnnotations { + tc.pvc.Annotations[k] = v + } + } + if tc.updatedCapacity != "" { + capacity := resource.MustParse(tc.updatedCapacity) + tc.pvc.Spec.Resources.Requests[v1.ResourceStorage] = capacity + } + objects = append(objects, tc.pvc) + } + if tc.pv != nil { + tc.pv.Spec.PersistentVolumeSource.CSI.Driver = driverName + objects = append(objects, tc.pv) + } + + k8sClient := fake.NewSimpleClientset(objects...) + factory := informers.NewSharedInformerFactory(k8sClient, 0) + + modifier, err := modifier.NewFromClient(tc.driverName, client, k8sClient, 0) + if err != nil { + t.Fatal(err) + } + + controller := NewModifyController( + tc.driverName, + modifier, + k8sClient, + 0, + factory, + workqueue.DefaultControllerRateLimiter(), + false, + ) + + stopCh := make(chan struct{}) + factory.Start(stopCh) + + ctx := context.Background() + defer ctx.Done() + go controller.Run(1, ctx) + + time.Sleep(1 * time.Second) + + if client.GetModifyCallCount() != tc.expectedModifyVolumeCallCount { + t.Fatalf("unexpected modify volume call count: expected %d, got %d", tc.expectedModifyVolumeCallCount, client.GetModifyCallCount()) + } + + updatedPV, err := k8sClient.CoreV1().PersistentVolumes().Get(context.TODO(), tc.pv.Name, metav1.GetOptions{}) + if err != nil { + t.Fatal(err) + } + + if tc.expectSuccessfulModification { + err = verifyAnnotationsOnPV(updatedPV.Annotations, tc.additionalPVCAnnotations) + } else { + err = verifyNoAnnotationsOnPV(updatedPV.Annotations, driverName) + } + if err != nil { + t.Fatal(err) + } + }) + } +} + +func verifyNoAnnotationsOnPV(ann map[string]string, driverName string) error { + for k, v := range ann { + if strings.HasPrefix(k, driverName) { + return fmt.Errorf("found annotation on PV: %s (value: %s)", k, v) + } + } + return nil +} + +func verifyAnnotationsOnPV(updatedAnnotations, expectedAnnotations map[string]string) error { + for k, v := range expectedAnnotations { + if updatedAnnotations[k] != v { + return fmt.Errorf("unexpected annotation on PV: %s (value : %s)", k, v) + } + } + return nil +} + +func newFakePVC() *v1.PersistentVolumeClaim { + return &v1.PersistentVolumeClaim{ + ObjectMeta: metav1.ObjectMeta{ + Name: "testPVC", + Namespace: namespace, + UID: "test", + Annotations: make(map[string]string), + }, + Spec: v1.PersistentVolumeClaimSpec{ + Resources: v1.ResourceRequirements{ + Requests: map[v1.ResourceName]resource.Quantity{ + v1.ResourceStorage: *resource.NewQuantity(10*1024*1024*1024, resource.BinarySI), + }, + }, + VolumeName: "testPV", + }, + Status: v1.PersistentVolumeClaimStatus{ + Phase: v1.ClaimBound, + Capacity: map[v1.ResourceName]resource.Quantity{ + v1.ResourceStorage: *resource.NewQuantity(10*1024*1024*1024, resource.BinarySI), + }, + }, + } +} + +func newFakePV(pvcName, pvcNamespace string, pvcUID types.UID) *v1.PersistentVolume { + pv := &v1.PersistentVolume{ + ObjectMeta: metav1.ObjectMeta{ + Name: "testPV", + Annotations: make(map[string]string), + }, + Spec: v1.PersistentVolumeSpec{ + Capacity: map[v1.ResourceName]resource.Quantity{ + v1.ResourceStorage: *resource.NewQuantity(10*1024*1024*1024, resource.BinarySI), + }, + PersistentVolumeSource: v1.PersistentVolumeSource{ + CSI: &v1.CSIPersistentVolumeSource{ + Driver: "test", + VolumeHandle: "vol-123243434", + }, + }, + }, + } + if pvcName != "" { + pv.Spec.ClaimRef = &v1.ObjectReference{ + Namespace: pvcNamespace, + Name: pvcName, + UID: pvcUID, + } + pv.Status.Phase = v1.VolumeBound + } + return pv +} diff --git a/pkg/controller/util.go b/pkg/controller/util.go new file mode 100644 index 0000000..9d06a1a --- /dev/null +++ b/pkg/controller/util.go @@ -0,0 +1,13 @@ +package controller + +const ( + VolumeModificationStarted = "VolumeModificationStarted" + + VolumeModificationFailed = "VolumeModificationFailed" + + VolumeModificationSuccessful = "VolumeModificationSuccessful" + + AnnotationPrefixPattern = "%s/" + + AnnotationStatusPrefixPattern = "%s/%s-status" +) diff --git a/pkg/modifier/csi_modifier.go b/pkg/modifier/csi_modifier.go new file mode 100644 index 0000000..cb34932 --- /dev/null +++ b/pkg/modifier/csi_modifier.go @@ -0,0 +1,67 @@ +package modifier + +import ( + "context" + "fmt" + "time" + + csi "github.com/awslabs/volume-modifier-for-k8s/pkg/client" + v1 "k8s.io/api/core/v1" + "k8s.io/client-go/kubernetes" + csitrans "k8s.io/csi-translation-lib" + "k8s.io/klog/v2" +) + +func NewFromClient( + name string, + csiClient csi.Client, + kubeClient kubernetes.Interface, + timeout time.Duration, +) (Modifier, error) { + return &csiModifier{ + name: name, + client: csiClient, + k8sClient: kubeClient, + timeout: timeout, + }, nil +} + +type csiModifier struct { + name string + client csi.Client + timeout time.Duration + k8sClient kubernetes.Interface +} + +func (c *csiModifier) Name() string { + return c.name +} + +func (c *csiModifier) Modify(pv *v1.PersistentVolume, params, reqContext map[string]string) error { + klog.V(6).InfoS("Received modify request", "pv", pv, "params", params) + + var ( + volumeID string + ) + + if pv.Spec.CSI != nil { + volumeID = pv.Spec.CSI.VolumeHandle + } else { + translator := csitrans.New() + if translator.IsMigratedCSIDriverByName(c.name) { + csiPV, err := translator.TranslateInTreePVToCSI(pv) + if err != nil { + return fmt.Errorf("failed to translate persistent volume: %w", err) + } + volumeID = csiPV.Spec.CSI.VolumeHandle + } else { + return fmt.Errorf("volume %v is not migrated to CSI", pv.Name) + } + } + + klog.InfoS("Calling modify volume for volume", "volumeID", volumeID) + + ctx, cancel := context.WithTimeout(context.TODO(), c.timeout) + defer cancel() + return c.client.Modify(ctx, volumeID, params, reqContext) +} diff --git a/pkg/modifier/csi_modifier_test.go b/pkg/modifier/csi_modifier_test.go new file mode 100644 index 0000000..b2911b5 --- /dev/null +++ b/pkg/modifier/csi_modifier_test.go @@ -0,0 +1,163 @@ +package modifier + +import ( + "testing" + + csi "github.com/awslabs/volume-modifier-for-k8s/pkg/client" + "github.com/google/go-cmp/cmp" + v1 "k8s.io/api/core/v1" + "k8s.io/apimachinery/pkg/api/resource" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/client-go/kubernetes" + "k8s.io/client-go/kubernetes/fake" +) + +func TestNewModifier(t *testing.T) { + testCases := []struct { + name string + driverName string + }{ + { + name: "new modifier succeeds", + driverName: "mock", + }, + } + + for _, tc := range testCases { + t.Run(tc.name, func(t *testing.T) { + client := csi.NewFakeClient(tc.name, true, false) + k8sClient := getFakeKubernetesClient() + modifier, err := NewFromClient(tc.driverName, client, k8sClient, 0) + if err != nil { + t.Fatal(err) + } + if modifier.Name() != tc.driverName { + t.Fatalf("unexpected modifier name, expected %s, got %s", tc.driverName, modifier.Name()) + } + }) + } +} + +func TestModify(t *testing.T) { + testCases := []struct { + name string + driverName string + inTree bool + clientReturnsError bool + params map[string]string + reqContext map[string]string + }{ + { + name: "modify succeeds", + driverName: "ebs.csi.aws.com", + params: map[string]string{ + "foo": "bar", + }, + reqContext: map[string]string{ + "baz": "bar", + }, + }, + { + name: "modify fails", + driverName: "ebs.csi.aws.com", + params: map[string]string{ + "foo": "bar", + }, + reqContext: map[string]string{ + "baz": "bar", + }, + clientReturnsError: true, + }, + { + name: "test intree migrated PV modification succeeds", + driverName: "ebs.csi.aws.com", + inTree: true, + params: map[string]string{ + "foo": "bar", + }, + reqContext: map[string]string{ + "baz": "bar", + }, + }, + } + + for _, tc := range testCases { + t.Run(tc.name, func(t *testing.T) { + client := csi.NewFakeClient(tc.name, true, tc.clientReturnsError) + k8sClient := getFakeKubernetesClient() + volumeID := "vol-1234355446a2" + var pv *v1.PersistentVolume + if tc.inTree { + pv = newFakeInTreePV("test", volumeID) + } else { + pv = newFakeCSIPV("test", tc.driverName, volumeID) + } + modifier, err := NewFromClient(tc.driverName, client, k8sClient, 0) + if err != nil { + t.Fatal(err) + } + err = modifier.Modify(pv, tc.params, tc.reqContext) + if err != nil { + if !tc.clientReturnsError { + t.Fatal(err) + } + } + if client.GetVolumeName() != volumeID { + t.Fatalf("unexpected volume ID: got %s, expected %s", client.GetVolumeName(), volumeID) + } + if diff := cmp.Diff(client.GetParams(), tc.params); diff != "" { + t.Fatalf("unexpected params: diff = %v", diff) + } + if diff := cmp.Diff(client.GetReqContext(), tc.reqContext); diff != "" { + t.Fatalf("unexpected req context: diff = %v", diff) + } + }) + } +} + +func newFakeInTreePV(name, volumeID string) *v1.PersistentVolume { + pv := &v1.PersistentVolume{ + ObjectMeta: metav1.ObjectMeta{ + Name: name, + }, + Spec: v1.PersistentVolumeSpec{ + AccessModes: []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}, + Capacity: v1.ResourceList{ + v1.ResourceName(v1.ResourceStorage): resource.MustParse("4Gi"), + }, + PersistentVolumeSource: v1.PersistentVolumeSource{ + AWSElasticBlockStore: &v1.AWSElasticBlockStoreVolumeSource{ + VolumeID: volumeID, + ReadOnly: false, + }, + }, + }, + } + return pv +} + +func newFakeCSIPV(name, driverName, volumeID string) *v1.PersistentVolume { + pv := &v1.PersistentVolume{ + ObjectMeta: metav1.ObjectMeta{ + Name: name, + }, + Spec: v1.PersistentVolumeSpec{ + AccessModes: []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}, + Capacity: v1.ResourceList{ + v1.ResourceName(v1.ResourceStorage): resource.MustParse("4Gi"), + }, + PersistentVolumeSource: v1.PersistentVolumeSource{ + CSI: &v1.CSIPersistentVolumeSource{ + Driver: driverName, + VolumeHandle: volumeID, + ReadOnly: false, + }, + }, + }, + } + return pv +} + +func getFakeKubernetesClient() kubernetes.Interface { + return fake.NewSimpleClientset() +} diff --git a/pkg/modifier/modifier.go b/pkg/modifier/modifier.go new file mode 100644 index 0000000..248962a --- /dev/null +++ b/pkg/modifier/modifier.go @@ -0,0 +1,9 @@ +package modifier + +import v1 "k8s.io/api/core/v1" + +type Modifier interface { + Name() string + + Modify(*v1.PersistentVolume, map[string]string, map[string]string) error +} diff --git a/pkg/rpc/modify.pb.go b/pkg/rpc/modify.pb.go new file mode 100644 index 0000000..c63c331 --- /dev/null +++ b/pkg/rpc/modify.pb.go @@ -0,0 +1,381 @@ +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.25.0 +// protoc v3.15.8 +// source: modify.proto + +package rpc + +import ( + proto "github.com/golang/protobuf/proto" + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + _ "google.golang.org/protobuf/types/descriptorpb" + reflect "reflect" + sync "sync" +) + +const ( + // Verify that this generated code is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) + // Verify that runtime/protoimpl is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) +) + +// This is a compile-time assertion that a sufficiently up-to-date version +// of the legacy proto package is being used. +const _ = proto.ProtoPackageIsVersion4 + +type GetCSIDriverModificationCapabilityRequest struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields +} + +func (x *GetCSIDriverModificationCapabilityRequest) Reset() { + *x = GetCSIDriverModificationCapabilityRequest{} + if protoimpl.UnsafeEnabled { + mi := &file_modify_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *GetCSIDriverModificationCapabilityRequest) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*GetCSIDriverModificationCapabilityRequest) ProtoMessage() {} + +func (x *GetCSIDriverModificationCapabilityRequest) ProtoReflect() protoreflect.Message { + mi := &file_modify_proto_msgTypes[0] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use GetCSIDriverModificationCapabilityRequest.ProtoReflect.Descriptor instead. +func (*GetCSIDriverModificationCapabilityRequest) Descriptor() ([]byte, []int) { + return file_modify_proto_rawDescGZIP(), []int{0} +} + +type GetCSIDriverModificationCapabilityResponse struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields +} + +func (x *GetCSIDriverModificationCapabilityResponse) Reset() { + *x = GetCSIDriverModificationCapabilityResponse{} + if protoimpl.UnsafeEnabled { + mi := &file_modify_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *GetCSIDriverModificationCapabilityResponse) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*GetCSIDriverModificationCapabilityResponse) ProtoMessage() {} + +func (x *GetCSIDriverModificationCapabilityResponse) ProtoReflect() protoreflect.Message { + mi := &file_modify_proto_msgTypes[1] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use GetCSIDriverModificationCapabilityResponse.ProtoReflect.Descriptor instead. +func (*GetCSIDriverModificationCapabilityResponse) Descriptor() ([]byte, []int) { + return file_modify_proto_rawDescGZIP(), []int{1} +} + +type ModifyVolumePropertiesRequest struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Name of the volume. + // This field is REQUIRED. + Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"` + // New volume attributes. + // This field is REQUIRED. + Parameters map[string]string `protobuf:"bytes,2,rep,name=parameters,proto3" json:"parameters,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"` + // Contains additional information that + // may be required by driver. + Context map[string]string `protobuf:"bytes,3,rep,name=context,proto3" json:"context,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"` +} + +func (x *ModifyVolumePropertiesRequest) Reset() { + *x = ModifyVolumePropertiesRequest{} + if protoimpl.UnsafeEnabled { + mi := &file_modify_proto_msgTypes[2] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *ModifyVolumePropertiesRequest) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*ModifyVolumePropertiesRequest) ProtoMessage() {} + +func (x *ModifyVolumePropertiesRequest) ProtoReflect() protoreflect.Message { + mi := &file_modify_proto_msgTypes[2] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use ModifyVolumePropertiesRequest.ProtoReflect.Descriptor instead. +func (*ModifyVolumePropertiesRequest) Descriptor() ([]byte, []int) { + return file_modify_proto_rawDescGZIP(), []int{2} +} + +func (x *ModifyVolumePropertiesRequest) GetName() string { + if x != nil { + return x.Name + } + return "" +} + +func (x *ModifyVolumePropertiesRequest) GetParameters() map[string]string { + if x != nil { + return x.Parameters + } + return nil +} + +func (x *ModifyVolumePropertiesRequest) GetContext() map[string]string { + if x != nil { + return x.Context + } + return nil +} + +type ModifyVolumePropertiesResponse struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields +} + +func (x *ModifyVolumePropertiesResponse) Reset() { + *x = ModifyVolumePropertiesResponse{} + if protoimpl.UnsafeEnabled { + mi := &file_modify_proto_msgTypes[3] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *ModifyVolumePropertiesResponse) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*ModifyVolumePropertiesResponse) ProtoMessage() {} + +func (x *ModifyVolumePropertiesResponse) ProtoReflect() protoreflect.Message { + mi := &file_modify_proto_msgTypes[3] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use ModifyVolumePropertiesResponse.ProtoReflect.Descriptor instead. +func (*ModifyVolumePropertiesResponse) Descriptor() ([]byte, []int) { + return file_modify_proto_rawDescGZIP(), []int{3} +} + +var File_modify_proto protoreflect.FileDescriptor + +var file_modify_proto_rawDesc = []byte{ + 0x0a, 0x0c, 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x09, + 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x79, 0x2e, 0x76, 0x31, 0x1a, 0x20, 0x67, 0x6f, 0x6f, 0x67, 0x6c, + 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x64, 0x65, 0x73, 0x63, 0x72, + 0x69, 0x70, 0x74, 0x6f, 0x72, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 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0x2f, 0x72, 0x70, 0x63, 0x62, 0x06, + 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33, +} + +var ( + file_modify_proto_rawDescOnce sync.Once + file_modify_proto_rawDescData = file_modify_proto_rawDesc +) + +func file_modify_proto_rawDescGZIP() []byte { + file_modify_proto_rawDescOnce.Do(func() { + file_modify_proto_rawDescData = protoimpl.X.CompressGZIP(file_modify_proto_rawDescData) + }) + return file_modify_proto_rawDescData +} + +var file_modify_proto_msgTypes = make([]protoimpl.MessageInfo, 6) +var file_modify_proto_goTypes = []interface{}{ + (*GetCSIDriverModificationCapabilityRequest)(nil), // 0: modify.v1.GetCSIDriverModificationCapabilityRequest + (*GetCSIDriverModificationCapabilityResponse)(nil), // 1: modify.v1.GetCSIDriverModificationCapabilityResponse + (*ModifyVolumePropertiesRequest)(nil), // 2: modify.v1.ModifyVolumePropertiesRequest + (*ModifyVolumePropertiesResponse)(nil), // 3: modify.v1.ModifyVolumePropertiesResponse + nil, // 4: modify.v1.ModifyVolumePropertiesRequest.ParametersEntry + nil, // 5: modify.v1.ModifyVolumePropertiesRequest.ContextEntry +} +var file_modify_proto_depIdxs = []int32{ + 4, // 0: modify.v1.ModifyVolumePropertiesRequest.parameters:type_name -> modify.v1.ModifyVolumePropertiesRequest.ParametersEntry + 5, // 1: modify.v1.ModifyVolumePropertiesRequest.context:type_name -> modify.v1.ModifyVolumePropertiesRequest.ContextEntry + 0, // 2: modify.v1.Modify.GetCSIDriverModificationCapability:input_type -> modify.v1.GetCSIDriverModificationCapabilityRequest + 2, // 3: modify.v1.Modify.ModifyVolumeProperties:input_type -> modify.v1.ModifyVolumePropertiesRequest + 1, // 4: modify.v1.Modify.GetCSIDriverModificationCapability:output_type -> modify.v1.GetCSIDriverModificationCapabilityResponse + 3, // 5: modify.v1.Modify.ModifyVolumeProperties:output_type -> modify.v1.ModifyVolumePropertiesResponse + 4, // [4:6] is the sub-list for method output_type + 2, // [2:4] is the sub-list for method input_type + 2, // [2:2] is the sub-list for extension type_name + 2, // [2:2] is the sub-list for extension extendee + 0, // [0:2] is the sub-list for field type_name +} + +func init() { file_modify_proto_init() } +func file_modify_proto_init() { + if File_modify_proto != nil { + return + } + if !protoimpl.UnsafeEnabled { + file_modify_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*GetCSIDriverModificationCapabilityRequest); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_modify_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*GetCSIDriverModificationCapabilityResponse); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_modify_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*ModifyVolumePropertiesRequest); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_modify_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*ModifyVolumePropertiesResponse); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: file_modify_proto_rawDesc, + NumEnums: 0, + NumMessages: 6, + NumExtensions: 0, + NumServices: 1, + }, + GoTypes: file_modify_proto_goTypes, + DependencyIndexes: file_modify_proto_depIdxs, + MessageInfos: file_modify_proto_msgTypes, + }.Build() + File_modify_proto = out.File + file_modify_proto_rawDesc = nil + file_modify_proto_goTypes = nil + file_modify_proto_depIdxs = nil +} diff --git a/pkg/rpc/modify_grpc.pb.go b/pkg/rpc/modify_grpc.pb.go new file mode 100644 index 0000000..195c3f8 --- /dev/null +++ b/pkg/rpc/modify_grpc.pb.go @@ -0,0 +1,137 @@ +// Code generated by protoc-gen-go-grpc. DO NOT EDIT. + +package rpc + +import ( + context "context" + grpc "google.golang.org/grpc" + codes "google.golang.org/grpc/codes" + status "google.golang.org/grpc/status" +) + +// This is a compile-time assertion to ensure that this generated file +// is compatible with the grpc package it is being compiled against. +// Requires gRPC-Go v1.32.0 or later. +const _ = grpc.SupportPackageIsVersion7 + +// ModifyClient is the client API for Modify service. +// +// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream. +type ModifyClient interface { + GetCSIDriverModificationCapability(ctx context.Context, in *GetCSIDriverModificationCapabilityRequest, opts ...grpc.CallOption) (*GetCSIDriverModificationCapabilityResponse, error) + ModifyVolumeProperties(ctx context.Context, in *ModifyVolumePropertiesRequest, opts ...grpc.CallOption) (*ModifyVolumePropertiesResponse, error) +} + +type modifyClient struct { + cc grpc.ClientConnInterface +} + +func NewModifyClient(cc grpc.ClientConnInterface) ModifyClient { + return &modifyClient{cc} +} + +func (c *modifyClient) GetCSIDriverModificationCapability(ctx context.Context, in *GetCSIDriverModificationCapabilityRequest, opts ...grpc.CallOption) (*GetCSIDriverModificationCapabilityResponse, error) { + out := new(GetCSIDriverModificationCapabilityResponse) + err := c.cc.Invoke(ctx, "/modify.v1.Modify/GetCSIDriverModificationCapability", in, out, opts...) + if err != nil { + return nil, err + } + return out, nil +} + +func (c *modifyClient) ModifyVolumeProperties(ctx context.Context, in *ModifyVolumePropertiesRequest, opts ...grpc.CallOption) (*ModifyVolumePropertiesResponse, error) { + out := new(ModifyVolumePropertiesResponse) + err := c.cc.Invoke(ctx, "/modify.v1.Modify/ModifyVolumeProperties", in, out, opts...) + if err != nil { + return nil, err + } + return out, nil +} + +// ModifyServer is the server API for Modify service. +// All implementations must embed UnimplementedModifyServer +// for forward compatibility +type ModifyServer interface { + GetCSIDriverModificationCapability(context.Context, *GetCSIDriverModificationCapabilityRequest) (*GetCSIDriverModificationCapabilityResponse, error) + ModifyVolumeProperties(context.Context, *ModifyVolumePropertiesRequest) (*ModifyVolumePropertiesResponse, error) + mustEmbedUnimplementedModifyServer() +} + +// UnimplementedModifyServer must be embedded to have forward compatible implementations. +type UnimplementedModifyServer struct { +} + +func (UnimplementedModifyServer) GetCSIDriverModificationCapability(context.Context, *GetCSIDriverModificationCapabilityRequest) (*GetCSIDriverModificationCapabilityResponse, error) { + return nil, status.Errorf(codes.Unimplemented, "method GetCSIDriverModificationCapability not implemented") +} +func (UnimplementedModifyServer) ModifyVolumeProperties(context.Context, *ModifyVolumePropertiesRequest) (*ModifyVolumePropertiesResponse, error) { + return nil, status.Errorf(codes.Unimplemented, "method ModifyVolumeProperties not implemented") +} +func (UnimplementedModifyServer) mustEmbedUnimplementedModifyServer() {} + +// UnsafeModifyServer may be embedded to opt out of forward compatibility for this service. +// Use of this interface is not recommended, as added methods to ModifyServer will +// result in compilation errors. +type UnsafeModifyServer interface { + mustEmbedUnimplementedModifyServer() +} + +func RegisterModifyServer(s grpc.ServiceRegistrar, srv ModifyServer) { + s.RegisterService(&Modify_ServiceDesc, srv) +} + +func _Modify_GetCSIDriverModificationCapability_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) { + in := new(GetCSIDriverModificationCapabilityRequest) + if err := dec(in); err != nil { + return nil, err + } + if interceptor == nil { + return srv.(ModifyServer).GetCSIDriverModificationCapability(ctx, in) + } + info := &grpc.UnaryServerInfo{ + Server: srv, + FullMethod: "/modify.v1.Modify/GetCSIDriverModificationCapability", + } + handler := func(ctx context.Context, req interface{}) (interface{}, error) { + return srv.(ModifyServer).GetCSIDriverModificationCapability(ctx, req.(*GetCSIDriverModificationCapabilityRequest)) + } + return interceptor(ctx, in, info, handler) +} + +func _Modify_ModifyVolumeProperties_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) { + in := new(ModifyVolumePropertiesRequest) + if err := dec(in); err != nil { + return nil, err + } + if interceptor == nil { + return srv.(ModifyServer).ModifyVolumeProperties(ctx, in) + } + info := &grpc.UnaryServerInfo{ + Server: srv, + FullMethod: "/modify.v1.Modify/ModifyVolumeProperties", + } + handler := func(ctx context.Context, req interface{}) (interface{}, error) { + return srv.(ModifyServer).ModifyVolumeProperties(ctx, req.(*ModifyVolumePropertiesRequest)) + } + return interceptor(ctx, in, info, handler) +} + +// Modify_ServiceDesc is the grpc.ServiceDesc for Modify service. +// It's only intended for direct use with grpc.RegisterService, +// and not to be introspected or modified (even as a copy) +var Modify_ServiceDesc = grpc.ServiceDesc{ + ServiceName: "modify.v1.Modify", + HandlerType: (*ModifyServer)(nil), + Methods: []grpc.MethodDesc{ + { + MethodName: "GetCSIDriverModificationCapability", + Handler: _Modify_GetCSIDriverModificationCapability_Handler, + }, + { + MethodName: "ModifyVolumeProperties", + Handler: _Modify_ModifyVolumeProperties_Handler, + }, + }, + Streams: []grpc.StreamDesc{}, + Metadata: "modify.proto", +} diff --git a/pkg/util/util.go b/pkg/util/util.go new file mode 100644 index 0000000..2738053 --- /dev/null +++ b/pkg/util/util.go @@ -0,0 +1,42 @@ +package util + +import ( + "encoding/json" + "fmt" + "regexp" + + v1 "k8s.io/api/core/v1" + "k8s.io/apimachinery/pkg/util/strategicpatch" +) + +// PVCKey returns an unique key of a PVC object, +func PVCKey(pvc *v1.PersistentVolumeClaim) string { + return fmt.Sprintf("%s/%s", pvc.Namespace, pvc.Name) +} + +func GetPatchData(oldObj, newObj interface{}) ([]byte, error) { + oldData, err := json.Marshal(oldObj) + if err != nil { + return nil, fmt.Errorf("marshal old object failed: %v", err) + } + newData, err := json.Marshal(newObj) + if err != nil { + return nil, fmt.Errorf("marshal new object failed: %v", err) + } + patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldData, newData, oldObj) + if err != nil { + return nil, fmt.Errorf("CreateTwoWayMergePatch failed: %v", err) + } + return patchBytes, nil +} + +// SanitizeName changes any name to a sanitized name which can be accepted by kubernetes. +func SanitizeName(name string) string { + re := regexp.MustCompile("[^a-zA-Z0-9-]") + name = re.ReplaceAllString(name, "-") + if name[len(name)-1] == '-' { + // name must not end with '-' + name = name + "X" + } + return name +}