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Merge pull request #6 from Vicente-Cheng/add-webhook
Add StorageClass Validator
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,132 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "context" | ||
| "os" | ||
|
|
||
| "github.com/harvester/webhook/pkg/config" | ||
| "github.com/harvester/webhook/pkg/server" | ||
| "github.com/harvester/webhook/pkg/server/admission" | ||
| "github.com/rancher/wrangler/pkg/generated/controllers/core" | ||
| ctlstorage "github.com/rancher/wrangler/v3/pkg/generated/controllers/storage" | ||
| "github.com/rancher/wrangler/v3/pkg/kubeconfig" | ||
| "github.com/rancher/wrangler/v3/pkg/signals" | ||
| "github.com/sirupsen/logrus" | ||
| "github.com/urfave/cli/v2" | ||
| "k8s.io/client-go/rest" | ||
|
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| "github.com/harvester/csi-driver-lvm/pkg/webhook/storageclass" | ||
| ) | ||
|
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| const webhookName = "harvester-csi-driver-lvm-webhook" | ||
|
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| func main() { | ||
| var options config.Options | ||
| var logLevel string | ||
|
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| flags := []cli.Flag{ | ||
| &cli.StringFlag{ | ||
| Name: "loglevel", | ||
| Usage: "Specify log level", | ||
| EnvVars: []string{"LOGLEVEL"}, | ||
| Value: "info", | ||
| Destination: &logLevel, | ||
| }, | ||
| &cli.IntFlag{ | ||
| Name: "threadiness", | ||
| EnvVars: []string{"THREADINESS"}, | ||
| Usage: "Specify controller threads", | ||
| Value: 5, | ||
| Destination: &options.Threadiness, | ||
| }, | ||
| &cli.IntFlag{ | ||
| Name: "https-port", | ||
| EnvVars: []string{"WEBHOOK_SERVER_HTTPS_PORT"}, | ||
| Usage: "HTTPS listen port", | ||
| Value: 8443, | ||
| Destination: &options.HTTPSListenPort, | ||
| }, | ||
| &cli.StringFlag{ | ||
| Name: "namespace", | ||
| EnvVars: []string{"NAMESPACE"}, | ||
| Destination: &options.Namespace, | ||
| Usage: "The harvester namespace", | ||
| Value: "harvester-system", | ||
| Required: true, | ||
| }, | ||
| &cli.StringFlag{ | ||
| Name: "controller-user", | ||
| EnvVars: []string{"CONTROLLER_USER_NAME"}, | ||
| Destination: &options.ControllerUsername, | ||
| Value: "harvester-csi-driver-lvm-webhook", | ||
| Usage: "The harvester controller username", | ||
| }, | ||
| &cli.StringFlag{ | ||
| Name: "gc-user", | ||
| EnvVars: []string{"GARBAGE_COLLECTION_USER_NAME"}, | ||
| Destination: &options.GarbageCollectionUsername, | ||
| Usage: "The system username that performs garbage collection", | ||
| Value: "system:serviceaccount:kube-system:generic-garbage-collector", | ||
| }, | ||
| } | ||
|
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| cfg, err := kubeconfig.GetNonInteractiveClientConfig(os.Getenv("KUBECONFIG")).ClientConfig() | ||
| if err != nil { | ||
| logrus.Fatal(err) | ||
| } | ||
|
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| ctx := signals.SetupSignalContext() | ||
|
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| app := cli.NewApp() | ||
| app.Flags = flags | ||
| app.Action = func(_ *cli.Context) error { | ||
| setLogLevel(logLevel) | ||
| err := runWebhookServer(ctx, cfg, &options) | ||
| return err | ||
| } | ||
|
|
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| if err := app.Run(os.Args); err != nil { | ||
| logrus.Fatalf("run webhook server failed: %v", err) | ||
| } | ||
| } | ||
|
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| func runWebhookServer(ctx context.Context, cfg *rest.Config, options *config.Options) error { | ||
| storageFactory, err := ctlstorage.NewFactoryFromConfig(cfg) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| coreFactory, err := core.NewFactoryFromConfig(cfg) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| nodeClient := coreFactory.Core().V1().Node() | ||
| storageclassClient := storageFactory.Storage().V1().StorageClass() | ||
| webhookServer := server.NewWebhookServer(ctx, cfg, webhookName, options) | ||
|
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| storageclassValidator := storageclass.NewStorageClassValidator(storageclassClient, nodeClient) | ||
|
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| var validators = []admission.Validator{ | ||
| storageclassValidator, | ||
| } | ||
|
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| if err := webhookServer.RegisterValidators(validators...); err != nil { | ||
| return err | ||
| } | ||
|
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| if err := webhookServer.Start(); err != nil { | ||
| return err | ||
| } | ||
|
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| <-ctx.Done() | ||
|
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| return nil | ||
| } | ||
|
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| func setLogLevel(level string) { | ||
| ll, err := logrus.ParseLevel(level) | ||
| if err != nil { | ||
| ll = logrus.DebugLevel | ||
| } | ||
| // set global log level | ||
| logrus.SetLevel(ll) | ||
| } |
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