X-Git-Url: https://gerrit.onap.org/r/gitweb?p=demo.git;a=blobdiff_plain;f=vnfs%2FDAaaS%2Fmicroservices%2Fremote-config-operator%2Fcmd%2Fmanager%2Fmain.go;fp=vnfs%2FDAaaS%2Fmicroservices%2Fremote-config-operator%2Fcmd%2Fmanager%2Fmain.go;h=454533fab60c6a1190d34338ced327a72408e35e;hp=0000000000000000000000000000000000000000;hb=2026cb5283fbc44a4f68641f6e85628381ebda04;hpb=938afb8217d5414c4cd0d63650e24d0398ddcc91 diff --git a/vnfs/DAaaS/microservices/remote-config-operator/cmd/manager/main.go b/vnfs/DAaaS/microservices/remote-config-operator/cmd/manager/main.go new file mode 100644 index 00000000..454533fa --- /dev/null +++ b/vnfs/DAaaS/microservices/remote-config-operator/cmd/manager/main.go @@ -0,0 +1,182 @@ +package main + +import ( + "context" + "flag" + "fmt" + "os" + "runtime" + + // Import all Kubernetes client auth plugins (e.g. Azure, GCP, OIDC, etc.) + _ "k8s.io/client-go/plugin/pkg/client/auth" + "k8s.io/client-go/rest" + + "remote-config-operator/pkg/apis" + "remote-config-operator/pkg/controller" + + monitoringv1 "github.com/coreos/prometheus-operator/pkg/apis/monitoring/v1" + "github.com/operator-framework/operator-sdk/pkg/k8sutil" + kubemetrics "github.com/operator-framework/operator-sdk/pkg/kube-metrics" + "github.com/operator-framework/operator-sdk/pkg/leader" + "github.com/operator-framework/operator-sdk/pkg/log/zap" + "github.com/operator-framework/operator-sdk/pkg/metrics" + "github.com/operator-framework/operator-sdk/pkg/restmapper" + sdkVersion "github.com/operator-framework/operator-sdk/version" + "github.com/spf13/pflag" + v1 "k8s.io/api/core/v1" + "k8s.io/apimachinery/pkg/util/intstr" + "sigs.k8s.io/controller-runtime/pkg/client/config" + logf "sigs.k8s.io/controller-runtime/pkg/log" + "sigs.k8s.io/controller-runtime/pkg/manager" + "sigs.k8s.io/controller-runtime/pkg/manager/signals" +) + +// Change below variables to serve metrics on different host or port. +var ( + metricsHost = "0.0.0.0" + metricsPort int32 = 8383 + operatorMetricsPort int32 = 8686 +) +var log = logf.Log.WithName("cmd") + +func printVersion() { + log.Info(fmt.Sprintf("Go Version: %s", runtime.Version())) + log.Info(fmt.Sprintf("Go OS/Arch: %s/%s", runtime.GOOS, runtime.GOARCH)) + log.Info(fmt.Sprintf("Version of operator-sdk: %v", sdkVersion.Version)) +} + +func main() { + // Add the zap logger flag set to the CLI. The flag set must + // be added before calling pflag.Parse(). + pflag.CommandLine.AddFlagSet(zap.FlagSet()) + + // Add flags registered by imported packages (e.g. glog and + // controller-runtime) + pflag.CommandLine.AddGoFlagSet(flag.CommandLine) + + pflag.Parse() + + // Use a zap logr.Logger implementation. If none of the zap + // flags are configured (or if the zap flag set is not being + // used), this defaults to a production zap logger. + // + // The logger instantiated here can be changed to any logger + // implementing the logr.Logger interface. This logger will + // be propagated through the whole operator, generating + // uniform and structured logs. + logf.SetLogger(zap.Logger()) + + printVersion() + + namespace, err := k8sutil.GetWatchNamespace() + if err != nil { + log.Error(err, "Failed to get watch namespace") + os.Exit(1) + } + + // Get a config to talk to the apiserver + cfg, err := config.GetConfig() + if err != nil { + log.Error(err, "") + os.Exit(1) + } + + ctx := context.TODO() + // Become the leader before proceeding + err = leader.Become(ctx, "remote-config-operator-lock") + if err != nil { + log.Error(err, "") + os.Exit(1) + } + + // Create a new Cmd to provide shared dependencies and start components + mgr, err := manager.New(cfg, manager.Options{ + Namespace: namespace, + MapperProvider: restmapper.NewDynamicRESTMapper, + MetricsBindAddress: fmt.Sprintf("%s:%d", metricsHost, metricsPort), + }) + if err != nil { + log.Error(err, "") + os.Exit(1) + } + + log.Info("Registering Components.") + + // Setup Scheme for all resources + if err := apis.AddToScheme(mgr.GetScheme()); err != nil { + log.Error(err, "") + os.Exit(1) + } + + // Adding the monitoringv1 + if err := monitoringv1.AddToScheme(mgr.GetScheme()); err != nil { + log.Error(err, "") + os.Exit(1) + } + + // Setup all Controllers + if err := controller.AddToManager(mgr); err != nil { + log.Error(err, "") + os.Exit(1) + } + + if err = serveCRMetrics(cfg); err != nil { + log.Info("Could not generate and serve custom resource metrics", "error", err.Error()) + } + + // Add to the below struct any other metrics ports you want to expose. + servicePorts := []v1.ServicePort{ + {Port: metricsPort, Name: metrics.OperatorPortName, Protocol: v1.ProtocolTCP, TargetPort: intstr.IntOrString{Type: intstr.Int, IntVal: metricsPort}}, + {Port: operatorMetricsPort, Name: metrics.CRPortName, Protocol: v1.ProtocolTCP, TargetPort: intstr.IntOrString{Type: intstr.Int, IntVal: operatorMetricsPort}}, + } + // Create Service object to expose the metrics port(s). + service, err := metrics.CreateMetricsService(ctx, cfg, servicePorts) + if err != nil { + log.Info("Could not create metrics Service", "error", err.Error()) + } + + // CreateServiceMonitors will automatically create the prometheus-operator ServiceMonitor resources + // necessary to configure Prometheus to scrape metrics from this operator. + services := []*v1.Service{service} + _, err = metrics.CreateServiceMonitors(cfg, namespace, services) + if err != nil { + log.Info("Could not create ServiceMonitor object", "error", err.Error()) + // If this operator is deployed to a cluster without the prometheus-operator running, it will return + // ErrServiceMonitorNotPresent, which can be used to safely skip ServiceMonitor creation. + if err == metrics.ErrServiceMonitorNotPresent { + log.Info("Install prometheus-operator in your cluster to create ServiceMonitor objects", "error", err.Error()) + } + } + + log.Info("Starting the Cmd.") + + // Start the Cmd + if err := mgr.Start(signals.SetupSignalHandler()); err != nil { + log.Error(err, "Manager exited non-zero") + os.Exit(1) + } +} + +// serveCRMetrics gets the Operator/CustomResource GVKs and generates metrics based on those types. +// It serves those metrics on "http://metricsHost:operatorMetricsPort". +func serveCRMetrics(cfg *rest.Config) error { + // Below function returns filtered operator/CustomResource specific GVKs. + // For more control override the below GVK list with your own custom logic. + filteredGVK, err := k8sutil.GetGVKsFromAddToScheme(apis.AddToScheme) + if err != nil { + return err + } + // Get the namespace the operator is currently deployed in. + operatorNs, err := k8sutil.GetOperatorNamespace() + if err != nil { + return err + } + // To generate metrics in other namespaces, add the values below. + ns := []string{operatorNs} + // Generate and serve custom resource specific metrics. + err = kubemetrics.GenerateAndServeCRMetrics(cfg, ns, filteredGVK, metricsHost, operatorMetricsPort) + if err != nil { + return err + } + return nil +}