forked from etcd-io/etcd
-
Notifications
You must be signed in to change notification settings - Fork 0
/
ep_command.go
133 lines (115 loc) · 3.3 KB
/
ep_command.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
// Copyright 2015 CoreOS, Inc.
//
// 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 command
import (
"fmt"
"os"
"sync"
"time"
v3 "github.com/coreos/etcd/clientv3"
"github.com/coreos/etcd/pkg/flags"
"github.com/spf13/cobra"
)
// NewEndpointCommand returns the cobra command for "endpoint".
func NewEndpointCommand() *cobra.Command {
ec := &cobra.Command{
Use: "endpoint",
Short: "endpoint is used to check endpoints.",
}
ec.AddCommand(newEpHealthCommand())
ec.AddCommand(newEpStatusCommand())
return ec
}
func newEpHealthCommand() *cobra.Command {
cmd := &cobra.Command{
Use: "health",
Short: "health checks the healthiness of endpoints specified in `--endpoints` flag",
Run: epHealthCommandFunc,
}
return cmd
}
func newEpStatusCommand() *cobra.Command {
return &cobra.Command{
Use: "status",
Short: "status prints out the status of endpoints specified in `--endpoints` flag",
Run: epStatusCommandFunc,
}
}
// epHealthCommandFunc executes the "endpoint-health" command.
func epHealthCommandFunc(cmd *cobra.Command, args []string) {
flags.SetPflagsFromEnv("ETCDCTL", cmd.InheritedFlags())
endpoints, err := cmd.Flags().GetStringSlice("endpoints")
if err != nil {
ExitWithError(ExitError, err)
}
sec := secureCfgFromCmd(cmd)
dt := dialTimeoutFromCmd(cmd)
cfgs := []*v3.Config{}
for _, ep := range endpoints {
cfg, err := newClientCfg([]string{ep}, dt, sec)
if err != nil {
ExitWithError(ExitBadArgs, err)
}
cfgs = append(cfgs, cfg)
}
var wg sync.WaitGroup
for _, cfg := range cfgs {
wg.Add(1)
go func(cfg *v3.Config) {
defer wg.Done()
ep := cfg.Endpoints[0]
cli, err := v3.New(*cfg)
if err != nil {
fmt.Printf("%s is unhealthy: failed to connect: %v\n", ep, err)
return
}
st := time.Now()
// get a random key. As long as we can get the response without an error, the
// endpoint is health.
ctx, cancel := commandCtx(cmd)
_, err = cli.Get(ctx, "health")
cancel()
if err != nil {
fmt.Printf("%s is unhealthy: failed to commit proposal: %v\n", ep, err)
} else {
fmt.Printf("%s is healthy: successfully committed proposal: took = %v\n", ep, time.Since(st))
}
}(cfg)
}
wg.Wait()
}
type epStatus struct {
Ep string `json:"Endpoint"`
Resp *v3.StatusResponse `json:"Status"`
}
func epStatusCommandFunc(cmd *cobra.Command, args []string) {
c := mustClientFromCmd(cmd)
statusList := []epStatus{}
var err error
for _, ep := range c.Endpoints() {
ctx, cancel := commandCtx(cmd)
resp, serr := c.Status(ctx, ep)
cancel()
if serr != nil {
err = serr
fmt.Fprintf(os.Stderr, "Failed to get the status of endpoint %s (%v)\n", ep, serr)
continue
}
statusList = append(statusList, epStatus{Ep: ep, Resp: resp})
}
display.EndpointStatus(statusList)
if err != nil {
os.Exit(ExitError)
}
}