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main.go
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main.go
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/*
Copyright 2019 The OpenEBS 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"
"github.com/openebs/node-disk-manager/pkg/env"
"github.com/openebs/node-disk-manager/pkg/setup"
"github.com/openebs/node-disk-manager/pkg/upgrade"
"github.com/openebs/node-disk-manager/pkg/upgrade/v040_041"
"github.com/openebs/node-disk-manager/pkg/upgrade/v041_042"
"github.com/openebs/node-disk-manager/pkg/version"
"os"
"runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"time"
"github.com/openebs/node-disk-manager/pkg/apis"
"github.com/openebs/node-disk-manager/pkg/controller"
"github.com/operator-framework/operator-sdk/pkg/k8sutil"
"github.com/operator-framework/operator-sdk/pkg/leader"
"github.com/operator-framework/operator-sdk/pkg/ready"
sdkVersion "github.com/operator-framework/operator-sdk/version"
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
"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"
)
//ReconciliationInterval defines the triggering interval for reconciliation operation
const ReconciliationInterval = 5 * time.Second
var log = logf.Log.WithName("ndm-operator")
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("operator-sdk Version: %v", sdkVersion.Version))
log.Info(fmt.Sprintf("Version Tag: %s", version.GetVersion()))
log.Info(fmt.Sprintf("Git Commit: %s", version.GetGitCommit()))
}
func main() {
flag.Parse()
// 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(logf.ZapLogger(false))
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
leader.Become(context.TODO(), "node-disk-manager-lock")
r := ready.NewFileReady()
err = r.Set()
if err != nil {
log.Error(err, "")
os.Exit(1)
}
defer r.Unset()
reconInterval := ReconciliationInterval
// Create a new Cmd to provide shared dependencies and start components
mgr, err := manager.New(cfg, manager.Options{Namespace: namespace, SyncPeriod: &reconInterval})
if err != nil {
log.Error(err, "")
os.Exit(1)
}
// check if CRDs need to be installed.
// The OPENEBS_IO_INSTALL_CRD env is checked
if env.IsInstallCRDEnabled() {
log.Info("Installing the components")
// get a new install setup
setupConfig, err := setup.NewInstallSetup(cfg)
if err != nil {
log.Error(err, "")
os.Exit(1)
}
// install the components
if err = setupConfig.Install(); 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)
}
// Upgrade the components if required
k8sClient, err := client.New(cfg, client.Options{})
if err != nil {
log.Error(err, "")
os.Exit(1)
}
log.Info("Check if CR has to be upgraded, and perform upgrade")
err = performUpgrade(k8sClient)
if err != nil {
log.Error(err, "Upgrade failed")
os.Exit(1)
}
// Setup all Controllers
if err := controller.AddToManager(mgr); err != nil {
log.Error(err, "")
os.Exit(1)
}
log.Info("Starting the ndm-operator...")
// Start the Cmd
if err := mgr.Start(signals.SetupSignalHandler()); err != nil {
log.Error(err, "manager exited non-zero")
os.Exit(1)
}
}
// performUpgrade performs the upgrade operations
func performUpgrade(client client.Client) error {
v040_v041UpgradeTask := v040_041.NewUpgradeTask("0.4.0", "0.4.1", client)
v041_v042UpgradeTask := v041_042.NewUpgradeTask("0.4.1", "0.4.2", client)
return upgrade.RunUpgrade(v040_v041UpgradeTask, v041_v042UpgradeTask)
}