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main.go
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main.go
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// Copyright 2018 The Operator-SDK 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 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"
"github.com/operator-framework/operator-sdk/pkg/k8sutil"
"github.com/operator-framework/operator-sdk/pkg/leader"
"github.com/operator-framework/operator-sdk/pkg/log/zap"
"github.com/operator-framework/operator-sdk/pkg/ready"
"github.com/operator-framework/operator-sdk/test/test-framework/pkg/apis"
"github.com/operator-framework/operator-sdk/test/test-framework/pkg/controller"
sdkVersion "github.com/operator-framework/operator-sdk/version"
"github.com/spf13/pflag"
"sigs.k8s.io/controller-runtime/pkg/client/config"
"sigs.k8s.io/controller-runtime/pkg/manager"
logf "sigs.k8s.io/controller-runtime/pkg/runtime/log"
"sigs.k8s.io/controller-runtime/pkg/runtime/signals"
)
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)
}
// Become the leader before proceeding
if err := leader.Become(context.TODO(), "memcached-operator-lock"); err != nil {
log.Error(err, "Failed to become leader")
return
}
r := ready.NewFileReady()
err = r.Set()
if err != nil {
log.Error(err, "")
os.Exit(1)
}
defer func() {
if err := r.Unset(); err != nil {
log.Error(err, "Failed to unset file ready")
}
}()
// Create a new Cmd to provide shared dependencies and start components
mgr, err := manager.New(cfg, manager.Options{Namespace: namespace})
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)
}
// Setup all Controllers
if err := controller.AddToManager(mgr); err != nil {
log.Error(err, "")
os.Exit(1)
}
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)
}
}