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run.go
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run.go
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// Copyright 2019 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 helm
import (
"context"
"fmt"
"os"
"runtime"
"github.com/operator-framework/operator-sdk/pkg/helm/controller"
hoflags "github.com/operator-framework/operator-sdk/pkg/helm/flags"
"github.com/operator-framework/operator-sdk/pkg/helm/release"
"github.com/operator-framework/operator-sdk/pkg/helm/watches"
"github.com/operator-framework/operator-sdk/pkg/k8sutil"
"github.com/operator-framework/operator-sdk/pkg/leader"
sdkVersion "github.com/operator-framework/operator-sdk/version"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"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))
}
// Run runs the helm operator
func Run(flags *hoflags.HelmOperatorFlags) error {
printVersion()
namespace, found := os.LookupEnv(k8sutil.WatchNamespaceEnvVar)
log = log.WithValues("Namespace", namespace)
if found {
if namespace == metav1.NamespaceAll {
log.Info("Watching all namespaces.")
} else {
log.Info("Watching single namespace.")
}
} else {
log.Info(fmt.Sprintf("%v environment variable not set. Watching all namespaces.",
k8sutil.WatchNamespaceEnvVar))
namespace = metav1.NamespaceAll
}
cfg, err := config.GetConfig()
if err != nil {
log.Error(err, "Failed to get config.")
return err
}
mgr, err := manager.New(cfg, manager.Options{
Namespace: namespace,
})
if err != nil {
log.Error(err, "Failed to create a new manager.")
return err
}
watches, err := watches.Load(flags.WatchesFile)
if err != nil {
log.Error(err, "Failed to create new manager factories.")
return err
}
for _, w := range watches {
// Register the controller with the factory.
err := controller.Add(mgr, controller.WatchOptions{
Namespace: namespace,
GVK: w.GroupVersionKind,
ManagerFactory: release.NewManagerFactory(mgr, w.ChartDir),
ReconcilePeriod: flags.ReconcilePeriod,
WatchDependentResources: w.WatchDependentResources,
})
if err != nil {
log.Error(err, "Failed to add manager factory to controller.")
return err
}
}
operatorName, err := k8sutil.GetOperatorName()
if err != nil {
log.Error(err, "Failed to get operator name")
return err
}
// Become the leader before proceeding
err = leader.Become(context.TODO(), operatorName+"-lock")
if err != nil {
log.Error(err, "Failed to become leader.")
return err
}
// Start the Cmd
if err = mgr.Start(signals.SetupSignalHandler()); err != nil {
log.Error(err, "Manager exited non-zero.")
os.Exit(1)
}
return nil
}