143 lines
3.9 KiB
Go
143 lines
3.9 KiB
Go
// Copyright 2016 CoreOS, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package command
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import (
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"fmt"
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"os"
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"strconv"
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"github.com/coreos/etcd/Godeps/_workspace/src/github.com/spf13/cobra"
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"github.com/coreos/etcd/Godeps/_workspace/src/golang.org/x/net/context"
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"github.com/coreos/etcd/clientv3"
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"github.com/coreos/etcd/lease"
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)
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// NewLeaseCommand returns the cobra command for "lease".
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func NewLeaseCommand() *cobra.Command {
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lc := &cobra.Command{
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Use: "lease",
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Short: "lease is used to manage leases.",
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}
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lc.AddCommand(NewLeaseCreateCommand())
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lc.AddCommand(NewLeaseRevokeCommand())
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lc.AddCommand(NewLeaseKeepAliveCommand())
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return lc
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}
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// NewLeaseCreateCommand returns the cobra command for "lease create".
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func NewLeaseCreateCommand() *cobra.Command {
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lc := &cobra.Command{
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Use: "create",
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Short: "create is used to create leases.",
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Run: leaseCreateCommandFunc,
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}
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return lc
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}
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// leaseCreateCommandFunc executes the "lease create" command.
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func leaseCreateCommandFunc(cmd *cobra.Command, args []string) {
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if len(args) != 1 {
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ExitWithError(ExitBadArgs, fmt.Errorf("lease create command needs TTL argument."))
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}
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ttl, err := strconv.ParseInt(args[0], 10, 64)
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if err != nil {
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ExitWithError(ExitBadArgs, fmt.Errorf("bad TTL (%v)", err))
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}
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c := mustClient(cmd)
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l := clientv3.NewLease(c)
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resp, err := l.Create(context.TODO(), ttl)
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if err != nil {
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fmt.Fprintf(os.Stderr, "failed to create lease (%v)\n", err)
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return
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}
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fmt.Printf("lease %016x created with TTL(%ds)\n", resp.ID, resp.TTL)
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}
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// NewLeaseRevokeCommand returns the cobra command for "lease revoke".
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func NewLeaseRevokeCommand() *cobra.Command {
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lc := &cobra.Command{
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Use: "revoke",
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Short: "revoke is used to revoke leases.",
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Run: leaseRevokeCommandFunc,
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}
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return lc
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}
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// leaseRevokeCommandFunc executes the "lease create" command.
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func leaseRevokeCommandFunc(cmd *cobra.Command, args []string) {
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if len(args) != 1 {
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ExitWithError(ExitBadArgs, fmt.Errorf("lease revoke command needs 1 argument"))
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}
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id, err := strconv.ParseInt(args[0], 16, 64)
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if err != nil {
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ExitWithError(ExitBadArgs, fmt.Errorf("bad lease ID arg (%v), expecting ID in Hex", err))
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}
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c := mustClient(cmd)
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l := clientv3.NewLease(c)
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_, err = l.Revoke(context.TODO(), lease.LeaseID(id))
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if err != nil {
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fmt.Fprintf(os.Stderr, "failed to revoke lease (%v)\n", err)
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return
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}
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fmt.Printf("lease %016x revoked\n", id)
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}
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// NewLeaseKeepAliveCommand returns the cobra command for "lease keep-alive".
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func NewLeaseKeepAliveCommand() *cobra.Command {
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lc := &cobra.Command{
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Use: "keep-alive",
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Short: "keep-alive is used to keep leases alive.",
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Run: leaseKeepAliveCommandFunc,
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}
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return lc
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}
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// leaseKeepAliveCommandFunc executes the "lease keep-alive" command.
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func leaseKeepAliveCommandFunc(cmd *cobra.Command, args []string) {
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if len(args) != 1 {
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ExitWithError(ExitBadArgs, fmt.Errorf("lease keep-alive command needs lease ID as argument"))
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}
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id, err := strconv.ParseInt(args[0], 16, 64)
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if err != nil {
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ExitWithError(ExitBadArgs, fmt.Errorf("bad lease ID arg (%v), expecting ID in Hex", err))
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}
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c := mustClient(cmd)
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l := clientv3.NewLease(c)
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respc, kerr := l.KeepAlive(context.TODO(), lease.LeaseID(id))
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if kerr != nil {
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ExitWithError(ExitBadConnection, kerr)
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}
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for resp := range respc {
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fmt.Printf("lease %016x keepalived with TTL(%d)\n", resp.ID, resp.TTL)
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}
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fmt.Printf("lease %016x expired or revoked.\n", id)
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}
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