Fix syncing loops, fix logger issue with updated kubernetes controller (

#8)

cmd/provider/main.go

@@ -6,6 +6,7 @@ package main
 
 import (
 	"context"
+	"io"
 	"os"
 	"path/filepath"
 	"time"
@@ -37,19 +38,21 @@ func main() {
 	var (
 		app                     = kingpin.New(filepath.Base(os.Args[0]), "Terraform based Crossplane provider for Vault").DefaultEnvars()
 		debug                   = app.Flag("debug", "Run with debug logging.").Short('d').Bool()
-		syncPeriod              = app.Flag("sync", "Controller manager sync period such as 300ms, 1.5h, or 2h45m").Short('s').Default("1h").Duration()
+		syncInterval            = app.Flag("sync", "Controller manager sync period such as 300ms, 1.5h, or 2h45m").Short('s').Default("12h").Duration()
 		leaderElection          = app.Flag("leader-election", "Use leader election for the controller manager.").Short('l').Default("false").OverrideDefaultFromEnvar("LEADER_ELECTION").Bool()
 		terraformVersion        = app.Flag("terraform-version", "Terraform version.").Required().Envar("TERRAFORM_VERSION").String()
 		providerSource          = app.Flag("terraform-provider-source", "Terraform provider source.").Required().Envar("TERRAFORM_PROVIDER_SOURCE").String()
 		providerVersion         = app.Flag("terraform-provider-version", "Terraform provider version.").Required().Envar("TERRAFORM_PROVIDER_VERSION").String()
 		maxReconcileRate        = app.Flag("max-reconcile-rate", "The global maximum rate per second at which resources may checked for drift from the desired state.").Default("10").Int()
 		maxConcurrentReconciles = app.Flag("max-concurrent-reconciles", "The amount of items that will be processed concurrently.").Default("10").Int()
+		pollInterval            = app.Flag("poll", "Poll interval controls how often an individual resource should be checked for drift.").Default("30m").Duration()
 
 		namespace                  = app.Flag("namespace", "Namespace used to set as default scope in default secret store config.").Default("crossplane-system").Envar("POD_NAMESPACE").String()
 		enableExternalSecretStores = app.Flag("enable-external-secret-stores", "Enable support for ExternalSecretStores.").Default("false").Envar("ENABLE_EXTERNAL_SECRET_STORES").Bool()
 	)
 
 	kingpin.MustParse(app.Parse(os.Args[1:]))
+	ctrl.SetLogger(zap.New(zap.WriteTo(io.Discard)))
 
 	zl := zap.New(zap.UseDevMode(*debug))
 	log := logging.NewLogrLogger(zl.WithName("upjet-provider-vault"))
@@ -60,7 +63,10 @@ func main() {
 		ctrl.SetLogger(zl)
 	}
 
-	log.Debug("Starting", "sync-period", syncPeriod.String())
+	// currently, we configure the jitter to be the 5% of the poll interval
+	pollJitter := time.Duration(float64(*pollInterval) * 0.05)
+	log.Debug("Starting", "sync-interval", syncInterval.String(),
+		"poll-interval", pollInterval.String(), "poll-jitter", pollJitter, "max-reconcile-rate", *maxReconcileRate)
 
 	cfg, err := ctrl.GetConfig()
 	kingpin.FatalIfError(err, "Cannot get API server rest config")
@@ -69,7 +75,7 @@ func main() {
 		LeaderElection:   *leaderElection,
 		LeaderElectionID: "crossplane-leader-election-upjet-provider-vault",
 		Cache: cache.Options{
-			SyncPeriod: syncPeriod,
+			SyncPeriod: syncInterval,
 		},
 		LeaderElectionResourceLock: resourcelock.LeasesResourceLock,
 		LeaseDuration:              func() *time.Duration { d := 60 * time.Second; return &d }(),
@@ -81,14 +87,15 @@ func main() {
 		Options: xpcontroller.Options{
 			Logger:                  log,
 			GlobalRateLimiter:       ratelimiter.NewGlobal(*maxReconcileRate),
-			PollInterval:            1 * time.Minute,
+			PollInterval:            *pollInterval,
 			MaxConcurrentReconciles: *maxConcurrentReconciles,
 		},
 		Provider: config.GetProvider(),
 		// use the following WorkspaceStoreOption to enable the shared gRPC mode
 		// terraform.WithProviderRunner(terraform.NewSharedProvider(log, os.Getenv("TERRAFORM_NATIVE_PROVIDER_PATH"), terraform.WithNativeProviderArgs("-debuggable")))
 		WorkspaceStore: terraform.NewWorkspaceStore(log),
 		SetupFn:        clients.TerraformSetupBuilder(*terraformVersion, *providerSource, *providerVersion),
+		PollJitter:     pollJitter,
 	}
 
 	if *enableExternalSecretStores {