func actionMemberList(c *cli.Context) {
if len(c.Args()) != 0 {
fmt.Fprintln(os.Stderr, "No arguments accepted")
os.Exit(1)
}
mAPI := mustNewMembersAPI(c)
ctx, cancel := contextWithTotalTimeout(c)
defer cancel()
members, err := mAPI.List(ctx)
if err != nil {
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(1)
}
leader, err := mAPI.Leader(ctx)
if err != nil {
fmt.Fprintln(os.Stderr, "Failed to get leader: ", err)
os.Exit(1)
}
for _, m := range members {
isLeader := false
if m.ID == leader.ID {
isLeader = true
}
if len(m.Name) == 0 {
fmt.Printf("%s[unstarted]: peerURLs=%s\n", m.ID, strings.Join(m.PeerURLs, ","))
} else {
fmt.Printf("%s: name=%s peerURLs=%s clientURLs=%s isLeader=%v\n", m.ID, m.Name, strings.Join(m.PeerURLs, ","), strings.Join(m.ClientURLs, ","), isLeader)
}
}
}
// txnCommandFunc executes the "txn" command.
func txnCommandFunc(c *cli.Context) {
if len(c.Args()) != 0 {
panic("unexpected args")
}
reader := bufio.NewReader(os.Stdin)
next := compareState
txn := &pb.TxnRequest{}
for next != nil {
next = next(txn, reader)
}
conn, err := grpc.Dial("127.0.0.1:12379")
if err != nil {
panic(err)
}
etcd := pb.NewEtcdClient(conn)
resp, err := etcd.Txn(context.Background(), txn)
if err != nil {
fmt.Println(err)
}
if resp.Succeeded {
fmt.Println("executed success request list")
} else {
fmt.Println("executed failure request list")
}
}
// removeDirCommandFunc executes the "rmdir" command.
func removeDirCommandFunc(c *cli.Context, client *etcd.Client) (*etcd.Response, error) {
if len(c.Args()) == 0 {
return nil, errors.New("Key required")
}
key := c.Args()[0]
return client.DeleteDir(key)
}
// watchCommandFunc executes the "watch" command.
func watchCommandFunc(c *cli.Context, client *etcd.Client) (*etcd.Response, error) {
if len(c.Args()) == 0 {
return nil, errors.New("Key required")
}
key := c.Args()[0]
recursive := c.Bool("recursive")
forever := c.Bool("forever")
index := 0
if c.Int("after-index") != 0 {
index = c.Int("after-index") + 1
}
if forever {
sigch := make(chan os.Signal, 1)
signal.Notify(sigch, os.Interrupt)
stop := make(chan bool)
go func() {
<-sigch
os.Exit(0)
}()
receiver := make(chan *etcd.Response)
errCh := make(chan error, 1)
go func() {
_, err := client.Watch(key, uint64(index), recursive, receiver, stop)
errCh <- err
}()
for {
select {
case resp := <-receiver:
printAll(resp, c.GlobalString("output"))
case err := <-errCh:
handleError(-1, err)
}
}
} else {
var resp *etcd.Response
var err error
resp, err = client.Watch(key, uint64(index), recursive, nil, nil)
if err != nil {
handleError(ErrorFromEtcd, err)
}
if err != nil {
return nil, err
}
printAll(resp, c.GlobalString("output"))
}
return nil, nil
}
// setDirCommandFunc executes the "setDir" command.
func setDirCommandFunc(c *cli.Context, client *etcd.Client) (*etcd.Response, error) {
if len(c.Args()) == 0 {
return nil, errors.New("Key required")
}
key := c.Args()[0]
ttl := c.Int("ttl")
return client.SetDir(key, uint64(ttl))
}
// getCommandFunc executes the "get" command.
func getCommandFunc(c *cli.Context, client *etcd.Client) (*etcd.Response, error) {
if len(c.Args()) == 0 {
return nil, errors.New("Key required")
}
key := c.Args()[0]
sorted := c.Bool("sort")
// Retrieve the value from the server.
return client.Get(key, sorted, false)
}
// lsCommandFunc executes the "ls" command.
func lsCommandFunc(c *cli.Context, client *etcd.Client) (*etcd.Response, error) {
key := "/"
if len(c.Args()) != 0 {
key = c.Args()[0]
}
recursive := c.Bool("recursive")
// Retrieve the value from the server.
return client.Get(key, false, recursive)
}
func mustUserAPIAndName(c *cli.Context) (client.AuthUserAPI, string) {
args := c.Args()
if len(args) != 1 {
fmt.Fprintln(os.Stderr, "Please provide a username")
os.Exit(1)
}
api := mustNewAuthUserAPI(c)
username := args[0]
return api, username
}
func mustRoleAPIAndName(c *cli.Context) (client.AuthRoleAPI, string) {
args := c.Args()
if len(args) != 1 {
fmt.Fprintln(os.Stderr, "Please provide a role name")
os.Exit(1)
}
name := args[0]
api := mustNewAuthRoleAPI(c)
return api, name
}
// updatedirCommandFunc executes the "updatedir" command.
func updatedirCommandFunc(c *cli.Context, ki client.KeysAPI) {
if len(c.Args()) == 0 {
handleError(ExitBadArgs, errors.New("key required"))
}
key := c.Args()[0]
ttl := c.Int("ttl")
ctx, cancel := contextWithTotalTimeout(c)
_, err := ki.Set(ctx, key, "", &client.SetOptions{TTL: time.Duration(ttl) * time.Second, Dir: true, PrevExist: client.PrevExist})
cancel()
if err != nil {
handleError(ExitServerError, err)
}
}
// mkdirCommandFunc executes the "mkdir" command.
func mkdirCommandFunc(c *cli.Context, ki client.KeysAPI, prevExist client.PrevExistType) {
if len(c.Args()) == 0 {
handleError(ExitBadArgs, errors.New("key required"))
}
key := c.Args()[0]
ttl := c.Int("ttl")
_, err := ki.Set(context.TODO(), key, "", &client.SetOptions{TTL: time.Duration(ttl) * time.Second, Dir: true, PrevExist: prevExist})
if err != nil {
handleError(ExitServerError, err)
}
}
// deleteRangeCommandFunc executes the "delegeRange" command.
func deleteRangeCommandFunc(c *cli.Context) {
if len(c.Args()) == 0 {
panic("bad arg")
}
var rangeEnd []byte
key := []byte(c.Args()[0])
if len(c.Args()) > 1 {
rangeEnd = []byte(c.Args()[1])
}
conn, err := grpc.Dial(c.GlobalString("endpoint"))
if err != nil {
panic(err)
}
etcd := pb.NewEtcdClient(conn)
req := &pb.DeleteRangeRequest{Key: key, RangeEnd: rangeEnd}
etcd.DeleteRange(context.Background(), req)
if rangeEnd != nil {
fmt.Printf("range [%s, %s) is deleted\n", string(key), string(rangeEnd))
} else {
fmt.Printf("key %s is deleted\n", string(key))
}
}
// rmdirCommandFunc executes the "rmdir" command.
func rmdirCommandFunc(c *cli.Context, ki client.KeysAPI) {
if len(c.Args()) == 0 {
handleError(ExitBadArgs, errors.New("key required"))
}
key := c.Args()[0]
resp, err := ki.Delete(context.TODO(), key, &client.DeleteOptions{Dir: true})
if err != nil {
handleError(ExitServerError, err)
}
if !resp.Node.Dir {
printResponseKey(resp, c.GlobalString("output"))
}
}
// lsCommandFunc executes the "ls" command.
func lsCommandFunc(c *cli.Context, ki client.KeysAPI) {
key := "/"
if len(c.Args()) != 0 {
key = c.Args()[0]
}
sort := c.Bool("sort")
recursive := c.Bool("recursive")
resp, err := ki.Get(context.TODO(), key, &client.GetOptions{Sort: sort, Recursive: recursive})
if err != nil {
handleError(ExitServerError, err)
}
printLs(c, resp)
}
func actionMemberAdd(c *cli.Context) {
args := c.Args()
if len(args) != 2 {
fmt.Fprintln(os.Stderr, "Provide a name and a single member peerURL")
os.Exit(1)
}
mAPI := mustNewMembersAPI(c)
url := args[1]
ctx, cancel := context.WithTimeout(context.Background(), client.DefaultRequestTimeout)
m, err := mAPI.Add(ctx, url)
cancel()
if err != nil {
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(1)
}
newID := m.ID
newName := args[0]
fmt.Printf("Added member named %s with ID %s to cluster\n", newName, newID)
ctx, cancel = context.WithTimeout(context.Background(), client.DefaultRequestTimeout)
members, err := mAPI.List(ctx)
cancel()
if err != nil {
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(1)
}
conf := []string{}
for _, memb := range members {
for _, u := range memb.PeerURLs {
n := memb.Name
if memb.ID == newID {
n = newName
}
conf = append(conf, fmt.Sprintf("%s=%s", n, u))
}
}
fmt.Print("\n")
fmt.Printf("ETCD_NAME=%q\n", newName)
fmt.Printf("ETCD_INITIAL_CLUSTER=%q\n", strings.Join(conf, ","))
fmt.Printf("ETCD_INITIAL_CLUSTER_STATE=\"existing\"\n")
}
func actionMemberRemove(c *cli.Context) {
args := c.Args()
if len(args) != 1 {
fmt.Fprintln(os.Stderr, "Provide a single member ID")
os.Exit(1)
}
removalID := args[0]
mAPI := mustNewMembersAPI(c)
// Get the list of members.
listctx, listCancel := context.WithTimeout(context.Background(), client.DefaultRequestTimeout)
members, err := mAPI.List(listctx)
listCancel()
if err != nil {
fmt.Fprintln(os.Stderr, "Error while verifying ID against known members:", err.Error())
os.Exit(1)
}
// Sanity check the input.
foundID := false
for _, m := range members {
if m.ID == removalID {
foundID = true
}
if m.Name == removalID {
// Note that, so long as it's not ambiguous, we *could* do the right thing by name here.
fmt.Fprintf(os.Stderr, "Found a member named %s; if this is correct, please use its ID, eg:\n\tetcdctl member remove %s\n", m.Name, m.ID)
fmt.Fprintf(os.Stderr, "For more details, read the documentation at https://github.com/coreos/etcd/blob/master/Documentation/runtime-configuration.md#remove-a-member\n\n")
}
}
if !foundID {
fmt.Fprintf(os.Stderr, "Couldn't find a member in the cluster with an ID of %s.\n", removalID)
os.Exit(1)
}
// Actually attempt to remove the member.
ctx, removeCancel := context.WithTimeout(context.Background(), client.DefaultRequestTimeout)
err = mAPI.Remove(ctx, removalID)
removeCancel()
if err != nil {
fmt.Fprintf(os.Stderr, "Recieved an error trying to remove member %s: %s", removalID, err.Error())
os.Exit(1)
}
fmt.Printf("Removed member %s from cluster\n", removalID)
}
func actionMemberList(c *cli.Context) {
if len(c.Args()) != 0 {
fmt.Fprintln(os.Stderr, "No arguments accepted")
os.Exit(1)
}
mAPI := mustNewMembersAPI(c)
ctx, cancel := context.WithTimeout(context.Background(), client.DefaultRequestTimeout)
members, err := mAPI.List(ctx)
cancel()
if err != nil {
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(1)
}
for _, m := range members {
fmt.Printf("%s: name=%s peerURLs=%s clientURLs=%s\n", m.ID, m.Name, strings.Join(m.PeerURLs, ","), strings.Join(m.ClientURLs, ","))
}
}
func actionUserList(c *cli.Context) {
if len(c.Args()) != 0 {
fmt.Fprintln(os.Stderr, "No arguments accepted")
os.Exit(1)
}
u := mustNewAuthUserAPI(c)
ctx, cancel := context.WithTimeout(context.Background(), client.DefaultRequestTimeout)
users, err := u.ListUsers(ctx)
cancel()
if err != nil {
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(1)
}
for _, user := range users {
fmt.Printf("%s\n", user)
}
}
// getCommandFunc executes the "get" command.
func getCommandFunc(c *cli.Context, client *etcd.Client) (*etcd.Response, error) {
if len(c.Args()) == 0 {
return nil, errors.New("Key required")
}
key := c.Args()[0]
consistent := c.Bool("consistent")
sorted := c.Bool("sort")
// Setup consistency on the client.
if consistent {
client.SetConsistency(etcd.STRONG_CONSISTENCY)
} else {
client.SetConsistency(etcd.WEAK_CONSISTENCY)
}
// Retrieve the value from the server.
return client.Get(key, sorted, false)
}
func actionRoleList(c *cli.Context) {
if len(c.Args()) != 0 {
fmt.Fprintln(os.Stderr, "No arguments accepted")
os.Exit(1)
}
r := mustNewAuthRoleAPI(c)
ctx, cancel := contextWithTotalTimeout(c)
roles, err := r.ListRoles(ctx)
cancel()
if err != nil {
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(1)
}
for _, role := range roles {
fmt.Printf("%s\n", role)
}
}
// compactionCommandFunc executes the "compaction" command.
func compactionCommandFunc(c *cli.Context) {
if len(c.Args()) != 1 {
panic("bad arg")
}
rev, err := strconv.ParseInt(c.Args()[0], 10, 64)
if err != nil {
panic("bad arg")
}
conn, err := grpc.Dial(c.GlobalString("endpoint"), grpc.WithInsecure())
if err != nil {
panic(err)
}
etcd := pb.NewEtcdClient(conn)
req := &pb.CompactionRequest{Revision: rev}
etcd.Compact(context.Background(), req)
}
func actionMemberRemove(c *cli.Context) {
args := c.Args()
if len(args) != 1 {
fmt.Fprintln(os.Stderr, "Provide a single member ID")
os.Exit(1)
}
mAPI := mustNewMembersAPI(c)
mID := args[0]
ctx, cancel := context.WithTimeout(context.Background(), client.DefaultRequestTimeout)
err := mAPI.Remove(ctx, mID)
cancel()
if err != nil {
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(1)
}
fmt.Printf("Removed member %s from cluster\n", mID)
}
// lsCommandFunc executes the "ls" command.
func lsCommandFunc(c *cli.Context, ki client.KeysAPI) {
key := "/"
if len(c.Args()) != 0 {
key = c.Args()[0]
}
sort := c.Bool("sort")
recursive := c.Bool("recursive")
quorum := c.Bool("quorum")
ctx, cancel := contextWithTotalTimeout(c)
resp, err := ki.Get(ctx, key, &client.GetOptions{Sort: sort, Recursive: recursive, Quorum: quorum})
cancel()
if err != nil {
handleError(ExitServerError, err)
}
printLs(c, resp)
}
// watchCommandFunc executes the "watch" command.
func watchCommandFunc(c *cli.Context, ki client.KeysAPI) {
if len(c.Args()) == 0 {
handleError(ExitBadArgs, errors.New("key required"))
}
key := c.Args()[0]
recursive := c.Bool("recursive")
forever := c.Bool("forever")
index := 0
if c.Int("after-index") != 0 {
index = c.Int("after-index") + 1
}
stop := false
w := ki.Watcher(key, &client.WatcherOptions{AfterIndex: uint64(index), Recursive: recursive})
sigch := make(chan os.Signal, 1)
signal.Notify(sigch, os.Interrupt)
go func() {
<-sigch
os.Exit(0)
}()
for !stop {
resp, err := w.Next(context.TODO())
if err != nil {
handleError(ExitServerError, err)
}
if resp.Node.Dir {
continue
}
if recursive {
fmt.Printf("[%s] %s\n", resp.Action, resp.Node.Key)
}
printResponseKey(resp, c.GlobalString("output"))
if !forever {
stop = true
}
}
}
// rmCommandFunc executes the "rm" command.
func rmCommandFunc(c *cli.Context, ki client.KeysAPI) {
if len(c.Args()) == 0 {
handleError(ExitBadArgs, errors.New("key required"))
}
key := c.Args()[0]
recursive := c.Bool("recursive")
dir := c.Bool("dir")
prevValue := c.String("with-value")
prevIndex := c.Int("with-index")
// TODO: handle transport timeout
resp, err := ki.Delete(context.TODO(), key, &client.DeleteOptions{PrevIndex: uint64(prevIndex), PrevValue: prevValue, Dir: dir, Recursive: recursive})
if err != nil {
handleError(ExitServerError, err)
}
if !resp.Node.Dir {
printResponseKey(resp, c.GlobalString("output"))
}
}
// getCommandFunc executes the "get" command.
func getCommandFunc(c *cli.Context, ki client.KeysAPI) {
if len(c.Args()) == 0 {
handleError(ExitBadArgs, errors.New("key required"))
}
key := c.Args()[0]
sorted := c.Bool("sort")
resp, err := ki.Get(context.TODO(), key, &client.GetOptions{Sort: sorted})
if err != nil {
handleError(ExitServerError, err)
}
if resp.Node.Dir {
fmt.Fprintln(os.Stderr, fmt.Sprintf("%s: is a directory", resp.Node.Key))
os.Exit(1)
}
printResponseKey(resp, c.GlobalString("output"))
}
func actionMemberUpdate(c *cli.Context) {
args := c.Args()
if len(args) != 2 {
fmt.Fprintln(os.Stderr, "Provide an ID and a list of comma separated peerURL (0xabcd http://example.com,http://example1.com)")
os.Exit(1)
}
mAPI := mustNewMembersAPI(c)
mid := args[0]
urls := args[1]
ctx, cancel := context.WithTimeout(context.Background(), client.DefaultRequestTimeout)
err := mAPI.Update(ctx, mid, strings.Split(urls, ","))
cancel()
if err != nil {
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(1)
}
fmt.Printf("Updated member with ID %s in cluster\n", mid)
}
// mkCommandFunc executes the "mk" command.
func mkCommandFunc(c *cli.Context, ki client.KeysAPI) {
if len(c.Args()) == 0 {
handleError(ExitBadArgs, errors.New("key required"))
}
key := c.Args()[0]
value, err := argOrStdin(c.Args(), os.Stdin, 1)
if err != nil {
handleError(ExitBadArgs, errors.New("value required"))
}
ttl := c.Int("ttl")
inorder := c.Bool("in-order")
var resp *client.Response
ctx, cancel := contextWithTotalTimeout(c)
if !inorder {
// Since PrevNoExist means that the Node must not exist previously,
// this Set method always creates a new key. Therefore, mk command
// succeeds only if the key did not previously exist, and the command
// prevents one from overwriting values accidentally.
resp, err = ki.Set(ctx, key, value, &client.SetOptions{TTL: time.Duration(ttl) * time.Second, PrevExist: client.PrevNoExist})
} else {
// If in-order flag is specified then create an inorder key under
// the directory identified by the key argument.
resp, err = ki.CreateInOrder(ctx, key, value, &client.CreateInOrderOptions{TTL: time.Duration(ttl) * time.Second})
}
cancel()
if err != nil {
handleError(ExitServerError, err)
}
printResponseKey(resp, c.GlobalString("output"))
}
// mkCommandFunc executes the "mk" command.
func mkCommandFunc(c *cli.Context, ki client.KeysAPI) {
if len(c.Args()) == 0 {
handleError(ExitBadArgs, errors.New("key required"))
}
key := c.Args()[0]
value, err := argOrStdin(c.Args(), os.Stdin, 1)
if err != nil {
handleError(ExitBadArgs, errors.New("value required"))
}
ttl := c.Int("ttl")
ctx, cancel := contextWithTotalTimeout(c)
// Since PrevNoExist means that the Node must not exist previously,
// this Set method always creates a new key. Therefore, mk command
// succeeds only if the key did not previously exist, and the command
// prevents one from overwriting values accidentally.
resp, err := ki.Set(ctx, key, value, &client.SetOptions{TTL: time.Duration(ttl) * time.Second, PrevExist: client.PrevNoExist})
cancel()
if err != nil {
handleError(ExitServerError, err)
}
printResponseKey(resp, c.GlobalString("output"))
}
// removeCommandFunc executes the "rm" command.
func removeCommandFunc(c *cli.Context, client *etcd.Client) (*etcd.Response, error) {
if len(c.Args()) == 0 {
return nil, errors.New("Key required")
}
key := c.Args()[0]
recursive := c.Bool("recursive")
dir := c.Bool("dir")
// TODO: distinguish with flag is not set and empty flag
// the cli pkg need to provide this feature
prevValue := c.String("with-value")
prevIndex := uint64(c.Int("with-index"))
if prevValue != "" || prevIndex != 0 {
return client.CompareAndDelete(key, prevValue, prevIndex)
}
if recursive || !dir {
return client.Delete(key, recursive)
}
return client.DeleteDir(key)
}
