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main.go
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main.go
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// Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 (
"flag"
"fmt"
"os"
"go.uber.org/zap/zapcore"
"github.com/gardener/etcd-druid/controllers"
"github.com/go-logr/logr"
"sigs.k8s.io/controller-runtime/pkg/log/zap"
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
ctrl "sigs.k8s.io/controller-runtime"
// +kubebuilder:scaffold:imports
)
var logger = ctrl.Log.WithName("druid")
func main() {
ctx := ctrl.SetupSignalHandler()
ctrl.SetLogger(zap.New(buildDefaultLoggerOpts()...))
mgrConfig := controllers.ManagerConfig{}
controllers.InitFromFlags(flag.CommandLine, &mgrConfig)
flag.Parse()
printFlags(logger)
if err := mgrConfig.Validate(); err != nil {
logger.Error(err, "validation of manager config failed")
os.Exit(1)
}
mgr, err := controllers.CreateManagerWithControllers(&mgrConfig)
if err != nil {
logger.Error(err, "failed to create druid controller manager")
os.Exit(1)
}
// +kubebuilder:scaffold:builder
logger.Info("Starting manager")
if err := mgr.Start(ctx); err != nil {
logger.Error(err, "Error running manager")
os.Exit(1)
}
}
func printFlags(logger logr.Logger) {
var flagsToPrint string
flag.VisitAll(func(f *flag.Flag) {
flagsToPrint += fmt.Sprintf("%s: %s, ", f.Name, f.Value)
})
logger.Info(fmt.Sprintf("Running with flags: %s", flagsToPrint[:len(flagsToPrint)-2]))
}
func buildDefaultLoggerOpts() []zap.Opts {
var opts []zap.Opts
opts = append(opts, zap.UseDevMode(false))
opts = append(opts, zap.JSONEncoder(func(encoderConfig *zapcore.EncoderConfig) {
encoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
encoderConfig.EncodeDuration = zapcore.StringDurationEncoder
}))
return opts
}