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sync.go
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sync.go
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package cmd
import (
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"strings"
"time"
"github.com/spf13/cobra"
"gopkg.in/AlecAivazis/survey.v1/terminal"
"k8s.io/client-go/kubernetes"
"github.com/jenkins-x/jx/pkg/jx/cmd/templates"
"github.com/jenkins-x/jx/pkg/kube"
"github.com/jenkins-x/jx/pkg/log"
"github.com/jenkins-x/jx/pkg/util"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
type SyncOptions struct {
CommonOptions
Daemon bool
NoKsyncInit bool
SingleMode bool
Container string
Namespace string
Pod string
Dir string
RemoteDir string
Reload bool
WatchOnly bool
stopCh chan struct{}
}
var (
sync_long = templates.LongDesc(`
Synchronises your local files to a DevPod so you an build and test your code easily on the cloud
For more documentation see: [https://jenkins-x.io/developing/devpods/](https://jenkins-x.io/developing/devpods/)
`)
sync_example = templates.Examples(`
# Starts synchronizing the current directory files to the users DevPod
jx sync
`)
defaultStignoreFile = `.git
.idea
.settings
.vscode
bin
build
target
node_modules
`
)
func NewCmdSync(f Factory, in terminal.FileReader, out terminal.FileWriter, errOut io.Writer) *cobra.Command {
options := &SyncOptions{
CommonOptions: CommonOptions{
Factory: f,
In: in,
Out: out,
Err: errOut,
},
}
cmd := &cobra.Command{
Use: "sync",
Short: "Synchronises your local files to a DevPod",
Long: sync_long,
Example: sync_example,
Aliases: []string{"log"},
Run: func(cmd *cobra.Command, args []string) {
options.Cmd = cmd
options.Args = args
err := options.Run()
CheckErr(err)
},
}
/* cmd.Flags().StringVarP(&options.Container, "container", "c", "", "The name of the container to log")
cmd.Flags().StringVarP(&options.Namespace, "namespace", "n", "", "the namespace to look for the Deployment. Defaults to the current namespace")
cmd.Flags().StringVarP(&options.Pod, "pod", "p", "", "the pod name to use")
cmd.Flags().StringVarP(&options.Dir, "dir", "d", "", "The directory to watch. Defaults to the current directory")
cmd.Flags().StringVarP(&options.RemoteDir, "remote-dir", "r", "", "The remote directory in the DevPod to sync")
cmd.Flags().BoolVarP(&options.Reload, "reload", "", false, "Should we reload the remote container on file changes?")
*/
cmd.Flags().BoolVarP(&options.Daemon, "daemon", "", false, "Runs ksync in a background daemon")
cmd.Flags().BoolVarP(&options.NoKsyncInit, "no-init", "", false, "Disables the use of 'ksync init' to ensure we have initialised ksync")
cmd.Flags().BoolVarP(&options.SingleMode, "single-mode", "", false, "Terminates eagerly if `ksync watch` fails")
// deprecated
cmd.Flags().BoolVarP(&options.WatchOnly, "watch-only", "", false, "Deprecated this flag is now ignored!")
return cmd
}
func (o *SyncOptions) Run() error {
// ksync is installed to the jx/bin dir, so we can add it for the user
os.Setenv("PATH", util.PathWithBinary())
client, err := o.KubeClient()
if err != nil {
return err
}
version, err := o.installKSync()
if err != nil {
return err
}
if !o.NoKsyncInit {
flag, err := kube.IsDaemonSetExists(client, "ksync", "kube-system")
if !flag || err != nil {
log.Infof("Initialising ksync\n")
// Deal with https://github.com/vapor-ware/ksync/issues/218
err = o.runCommandInteractive(true, "ksync", "init", "--upgrade", "--image",
fmt.Sprintf("vaporio/ksync:%s", version))
if err != nil {
return err
}
}
}
if o.SingleMode {
return o.KsyncWatch()
}
for {
err = o.KsyncWatch()
if err != nil {
log.Warnf("Failed on ksync watch: %s\n", err)
}
}
}
func (o *SyncOptions) waitForKsyncWatchToFail() {
logged := false
for {
_, err := o.getCommandOutput("", "ksync", "get")
if err != nil {
// lets assume watch is no longer running
log.Infof("Looks like 'ksync watch' is not running: %s\n", err)
return
}
if !logged {
logged = true
log.Infof("It looks like 'ksync watch' is already running so we don't need to run it yet...\n")
}
time.Sleep(time.Second * 5)
}
}
func (o *SyncOptions) KsyncWatch() error {
o.waitForKsyncWatchToFail()
args := []string{"watch"}
if o.Daemon {
args = append(args, "--daemon")
}
cmd := exec.Command("ksync", args...)
cmd.Stdout = o.Out
cmd.Stderr = o.Out
err := cmd.Start()
if err != nil {
return err
}
log.Infof("Started the ksync watch\n")
time.Sleep(1 * time.Second)
state := cmd.ProcessState
if state != nil && state.Exited() {
return fmt.Errorf("ksync watch terminated")
}
return cmd.Wait()
}
// CreateKsync removes the exiting ksync if it already exists then create a new ksync of the given name
func (o *SyncOptions) CreateKsync(client kubernetes.Interface, ns string, name string, dir string, remoteDir string, username string) error {
// ksync is installed to the jx/bin dir, so we can add it for the user
os.Setenv("PATH", util.PathWithBinary())
info := util.ColorInfo
log.Infof("synchronizing directory %s to DevPod %s path %s\n", info(dir), info(name), info(remoteDir))
ignoreFile := filepath.Join(dir, ".stignore")
exists, err := util.FileExists(ignoreFile)
if err != nil {
return err
}
if !exists {
err = ioutil.WriteFile(ignoreFile, []byte(defaultStignoreFile), DefaultWritePermissions)
if err != nil {
return err
}
}
matchLabels := map[string]string{
kube.LabelDevPodUsername: username,
}
selector, err := metav1.LabelSelectorAsSelector(&metav1.LabelSelector{MatchLabels: matchLabels})
if err != nil {
return err
}
_, pods, err := kube.GetPodsWithLabels(client, ns, selector.String())
if err != nil {
return err
}
// ignore the bad lines that come
ignoreNames := []string{"starting", "watching"}
deleteNames := []string{}
err = o.retry(5, time.Second, func() error {
text, err := o.getCommandOutput(dir, "ksync", "get")
if err == nil {
for i, line := range strings.Split(text, "\n") {
if i > 1 {
cols := strings.Split(strings.TrimSpace(line), " ")
if len(cols) > 2 {
n := strings.TrimSpace(cols[0])
if n == name || pods[n] == nil {
if util.StringArrayIndex(deleteNames, n) < 0 && util.StringArrayIndex(ignoreNames, n) < 0 {
deleteNames = append(deleteNames, n)
}
}
}
}
}
}
return err
})
if err != nil {
log.Warnf("Failed to get from ksync daemon: %s\n", err)
}
reload := "--reload=false"
if o.Reload {
reload = "--reload=true"
}
for _, n := range deleteNames {
// ignore results as we may not have a spec yet for this name
log.Infof("Removing old ksync %s\n", n)
o.RunCommand("ksync", "delete", n)
}
time.Sleep(1 * time.Second)
return o.RunCommand("ksync", "create", "--name", name, "-l", "jenkins.io/devpod="+name, reload, "-n", ns, dir, remoteDir)
}
func (o *SyncOptions) killWatchProcess(cmd *exec.Cmd) {
if err := cmd.Process.Kill(); err != nil {
log.Warnf("failed to kill 'ksync watch' process: %s\n", err)
}
}