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local.go
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local.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 up
import (
"fmt"
"os"
"os/exec"
"os/signal"
"os/user"
"path/filepath"
"runtime"
"strings"
"syscall"
"time"
"github.com/operator-framework/operator-sdk/internal/util/projutil"
ansibleOperator "github.com/operator-framework/operator-sdk/pkg/ansible/operator"
proxy "github.com/operator-framework/operator-sdk/pkg/ansible/proxy"
"github.com/operator-framework/operator-sdk/pkg/k8sutil"
"github.com/operator-framework/operator-sdk/pkg/scaffold"
ansibleScaffold "github.com/operator-framework/operator-sdk/pkg/scaffold/ansible"
sdkVersion "github.com/operator-framework/operator-sdk/version"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"sigs.k8s.io/controller-runtime/pkg/client/config"
"sigs.k8s.io/controller-runtime/pkg/manager"
logf "sigs.k8s.io/controller-runtime/pkg/runtime/log"
)
func NewLocalCmd() *cobra.Command {
upLocalCmd := &cobra.Command{
Use: "local",
Short: "Launches the operator locally",
Long: `The operator-sdk up local command launches the operator on the local machine
by building the operator binary with the ability to access a
kubernetes cluster using a kubeconfig file.
`,
Run: upLocalFunc,
}
upLocalCmd.Flags().StringVar(&kubeConfig, "kubeconfig", "", "The file path to kubernetes configuration file; defaults to $HOME/.kube/config")
upLocalCmd.Flags().StringVar(&operatorFlags, "operator-flags", "", "The flags that the operator needs. Example: \"--flag1 value1 --flag2=value2\"")
upLocalCmd.Flags().StringVar(&namespace, "namespace", "default", "The namespace where the operator watches for changes.")
upLocalCmd.Flags().StringVar(&ldFlags, "go-ldflags", "", "Set Go linker options")
return upLocalCmd
}
var (
kubeConfig string
operatorFlags string
namespace string
ldFlags string
)
const (
defaultConfigPath = ".kube/config"
)
func upLocalFunc(cmd *cobra.Command, args []string) {
mustKubeConfig()
log.Info("Running the operator locally.")
switch projutil.GetOperatorType() {
case projutil.OperatorTypeGo:
projutil.MustInProjectRoot()
upLocal()
case projutil.OperatorTypeAnsible:
upLocalAnsible()
default:
log.Fatal("failed to determine operator type")
}
}
// mustKubeConfig checks if the kubeconfig file exists.
func mustKubeConfig() {
// if kubeConfig is not specified, search for the default kubeconfig file under the $HOME/.kube/config.
if len(kubeConfig) == 0 {
usr, err := user.Current()
if err != nil {
log.Fatalf("failed to determine user's home dir: (%v)", err)
}
kubeConfig = filepath.Join(usr.HomeDir, defaultConfigPath)
}
_, err := os.Stat(kubeConfig)
if err != nil && os.IsNotExist(err) {
log.Fatalf("failed to find the kubeconfig file (%v): (%v)", kubeConfig, err)
}
}
func upLocal() {
args := []string{"run"}
if ldFlags != "" {
args = append(args, []string{"-ldflags", ldFlags}...)
}
args = append(args, filepath.Join(scaffold.ManagerDir, scaffold.CmdFile))
if operatorFlags != "" {
extraArgs := strings.Split(operatorFlags, " ")
args = append(args, extraArgs...)
}
dc := exec.Command("go", args...)
c := make(chan os.Signal)
signal.Notify(c, os.Interrupt, syscall.SIGTERM)
go func() {
<-c
err := dc.Process.Kill()
if err != nil {
log.Fatalf("failed to terminate the operator: (%v)", err)
}
os.Exit(0)
}()
dc.Stdout = os.Stdout
dc.Stderr = os.Stderr
dc.Env = append(os.Environ(), fmt.Sprintf("%v=%v", k8sutil.KubeConfigEnvVar, kubeConfig))
dc.Env = append(dc.Env, fmt.Sprintf("%v=%v", k8sutil.WatchNamespaceEnvVar, namespace))
err := dc.Run()
if err != nil {
log.Fatalf("failed to run operator locally: (%v)", err)
}
}
func upLocalAnsible() {
// Set the kubeconfig that the manager will be able to grab
os.Setenv(k8sutil.KubeConfigEnvVar, kubeConfig)
logf.SetLogger(logf.ZapLogger(false))
mgr, err := manager.New(config.GetConfigOrDie(), manager.Options{Namespace: namespace})
if err != nil {
log.Fatal(err)
}
printVersion()
log.Infof("watching namespace: %s", namespace)
done := make(chan error)
// start the proxy
err = proxy.Run(done, proxy.Options{
Address: "localhost",
Port: 8888,
KubeConfig: mgr.GetConfig(),
})
if err != nil {
log.Fatalf("error starting proxy: (%v)", err)
}
// start the operator
go ansibleOperator.Run(done, mgr, "./"+ansibleScaffold.WatchesYamlFile, time.Minute)
// wait for either to finish
err = <-done
if err != nil {
log.Fatal(err)
}
log.Info("Exiting.")
}
func printVersion() {
log.Infof("Go Version: %s", runtime.Version())
log.Infof("Go OS/Arch: %s/%s", runtime.GOOS, runtime.GOARCH)
log.Infof("operator-sdk Version: %v", sdkVersion.Version)
}