forked from alibaba/kt-connect
/
util.go
207 lines (184 loc) · 6.46 KB
/
util.go
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package command
import (
"fmt"
"os"
"os/signal"
"strings"
"syscall"
"github.com/alibaba/kt-connect/pkg/kt"
"github.com/alibaba/kt-connect/pkg/kt/cluster"
"github.com/alibaba/kt-connect/pkg/kt/options"
"github.com/alibaba/kt-connect/pkg/kt/util"
"github.com/rs/zerolog/log"
"github.com/urfave/cli"
)
// NewCommands return new Connect Action
func NewCommands(kt kt.CliInterface, action ActionInterface, options *options.DaemonOptions) []cli.Command {
return []cli.Command{
newRunCommand(kt, options, action),
newConnectCommand(kt, options, action),
newExchangeCommand(kt, options, action),
newMeshCommand(kt, options, action),
newDashboardCommand(kt, options, action),
NewCheckCommand(kt, options, action),
}
}
// SetUpWaitingChannel registry waiting channel
func SetUpWaitingChannel() (ch chan os.Signal) {
ch = make(chan os.Signal)
signal.Notify(ch, os.Interrupt, syscall.SIGHUP, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT)
return
}
// SetUpCloseHandler registry close handeler
func SetUpCloseHandler(cli kt.CliInterface, options *options.DaemonOptions, action string) (ch chan os.Signal) {
ch = make(chan os.Signal)
// see https://en.wikipedia.org/wiki/Signal_(IPC)
signal.Notify(ch, os.Interrupt, syscall.SIGHUP, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT, syscall.SIGKILL)
go func() {
<-ch
log.Info().Msgf("- Terminal And Clean Workspace\n")
CleanupWorkspace(cli, options)
log.Info().Msgf("- Successful Clean Up Workspace\n")
os.Exit(0)
}()
return
}
// CleanupWorkspace clean workspace
func CleanupWorkspace(cli kt.CliInterface, options *options.DaemonOptions) {
log.Info().Msgf("- start Clean Workspace\n")
if _, err := os.Stat(options.RuntimeOptions.PidFile); err == nil {
log.Info().Msgf("- remove pid %s", options.RuntimeOptions.PidFile)
if err = os.Remove(options.RuntimeOptions.PidFile); err != nil {
log.Error().Err(err).
Msgf("stop process:%s failed", options.RuntimeOptions.PidFile)
}
}
if _, err := os.Stat(".jvmrc"); err == nil {
log.Info().Msgf("- Remove .jvmrc %s", options.RuntimeOptions.PidFile)
if err = os.Remove(".jvmrc"); err != nil {
log.Error().Err(err).Msg("delete .jvmrc failed")
}
}
if _, err := os.Stat(".envrc"); err == nil {
log.Info().Msgf("- Remove .envrc %s", options.RuntimeOptions.PidFile)
if err = os.Remove(".envrc"); err != nil {
log.Error().Err(err).Msg("delete .envrc failed")
}
}
if len(options.ConnectOptions.Hosts) > 0 {
util.DropHosts(options.ConnectOptions.Hosts)
}
kubernetes, err := cli.Kubernetes()
if err != nil {
log.Error().Msgf("fails create kubernetes client when clean up workspace")
return
}
if len(options.RuntimeOptions.Origin) > 0 {
log.Info().Msgf("- Recover Origin App %s", options.RuntimeOptions.Origin)
err := kubernetes.ScaleTo(options.RuntimeOptions.Origin, options.Namespace, &options.RuntimeOptions.Replicas)
if err != nil {
log.Error().
Str("namespace", options.Namespace).
Msgf("scale deployment:%s to %d failed", options.RuntimeOptions.Origin, options.RuntimeOptions.Replicas)
}
}
err = tryCleanShadowRelatedObjs(options, kubernetes)
if err != nil {
return
}
if len(options.RuntimeOptions.Service) > 0 {
log.Info().Msgf("- cleanup service %s", options.RuntimeOptions.Service)
err := kubernetes.RemoveService(options.RuntimeOptions.Service, options.Namespace)
if err != nil {
log.Error().Err(err).Msg("delete service failed")
}
}
}
func tryCleanShadowRelatedObjs(options *options.DaemonOptions, kubernetes cluster.KubernetesInterface) (err error) {
var shouldCleanSharedShadowResource bool
if len(options.RuntimeOptions.Shadow) > 0 {
if options.ConnectOptions != nil && options.ConnectOptions.ShareShadow {
shouldCleanSharedShadowResource, err = decreaseRefOrRemoveTheShadow(kubernetes, options)
if err != nil {
return
}
} else {
log.Info().Msgf("- clean shadow %s", options.RuntimeOptions.Shadow)
err = kubernetes.RemoveDeployment(options.RuntimeOptions.Shadow, options.Namespace)
if err != nil {
return
}
}
}
if len(options.RuntimeOptions.SSHCM) > 0 {
shouldDelWithShared := options.ConnectOptions != nil && options.ConnectOptions.ShareShadow && shouldCleanSharedShadowResource
if shouldDelWithShared || (options.ConnectOptions != nil && !options.ConnectOptions.ShareShadow) {
log.Info().Msgf("- clean sshcm %s", options.RuntimeOptions.SSHCM)
err = kubernetes.RemoveConfigMap(options.RuntimeOptions.SSHCM, options.Namespace)
if err != nil {
return
}
}
}
removePrivateKey(options)
return
}
// decreaseRefOrRemoveTheShadow
func decreaseRefOrRemoveTheShadow(kubernetes cluster.KubernetesInterface, options *options.DaemonOptions) (bool, error) {
return kubernetes.DecreaseRef(options.Namespace, options.RuntimeOptions.Shadow)
}
// removePrivateKey remove the private key of ssh
func removePrivateKey(options *options.DaemonOptions) {
if options.RuntimeOptions.SSHCM == "" {
return
}
splits := strings.Split(options.RuntimeOptions.SSHCM, "-")
component, version := splits[1], splits[len(splits)-1]
file := util.PrivateKeyPath(component, version)
if err := os.Remove(file); os.IsNotExist(err) {
log.Error().Err(err).Msgf("can't delete %s", file)
}
}
// validateKubeOpts support like '-n default | --kubeconfig=/path/to/kubeconfig'
func validateKubeOpts(opts []string) error {
errMsg := "kubectl option %s invalid, check it by 'kubectl options'"
for _, opt := range opts {
// validate like '--kubeconfig=/path/to/kube/config'
if strings.Contains(opt, "=") && len(strings.Fields(opt)) != 1 {
return fmt.Errorf(errMsg, opt)
}
// validate like '-n default'
if strings.Contains(opt, " ") && len(strings.Fields(opt)) != 2 {
return fmt.Errorf(errMsg, opt)
}
}
return nil
}
// combineKubeOpts set default options of kubectl if not assign
func combineKubeOpts(options *options.DaemonOptions) error {
if err := validateKubeOpts(options.KubeOptions); err != nil {
return err
}
var configured, namespaced bool
for _, opt := range options.KubeOptions {
strs := strings.Fields(opt)
if len(strs) == 1 {
strs = strings.Split(opt, "=")
}
switch strs[0] {
case "-n", "--namespace":
options.Namespace = strs[1]
namespaced = true
case "--kubeconfig":
options.KubeConfig = strs[1]
configured = true
}
}
if !configured {
options.KubeOptions = append(options.KubeOptions, fmt.Sprintf("--kubeconfig=%s", options.KubeConfig))
}
if !namespaced {
options.KubeOptions = append(options.KubeOptions, fmt.Sprintf("--namespace=%s", options.Namespace))
}
return nil
}