mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
134 lines
3.3 KiB
Go
134 lines
3.3 KiB
Go
// Copyright 2015 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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"sync"
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"time"
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v3 "github.com/coreos/etcd/clientv3"
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"github.com/coreos/etcd/pkg/flags"
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"github.com/spf13/cobra"
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)
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// NewEndpointCommand returns the cobra command for "endpoint".
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func NewEndpointCommand() *cobra.Command {
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ec := &cobra.Command{
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Use: "endpoint",
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Short: "endpoint is used to check endpoints.",
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}
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ec.AddCommand(newEpHealthCommand())
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ec.AddCommand(newEpStatusCommand())
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return ec
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}
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func newEpHealthCommand() *cobra.Command {
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cmd := &cobra.Command{
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Use: "health",
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Short: "health checks the healthiness of endpoints specified in `--endpoints` flag",
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Run: epHealthCommandFunc,
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}
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return cmd
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}
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func newEpStatusCommand() *cobra.Command {
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return &cobra.Command{
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Use: "status",
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Short: "status prints out the status of endpoints specified in `--endpoints` flag",
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Run: epStatusCommandFunc,
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}
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}
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// epHealthCommandFunc executes the "endpoint-health" command.
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func epHealthCommandFunc(cmd *cobra.Command, args []string) {
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flags.SetPflagsFromEnv("ETCDCTL", cmd.InheritedFlags())
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endpoints, err := cmd.Flags().GetStringSlice("endpoints")
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if err != nil {
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ExitWithError(ExitError, err)
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}
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sec := secureCfgFromCmd(cmd)
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dt := dialTimeoutFromCmd(cmd)
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cfgs := []*v3.Config{}
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for _, ep := range endpoints {
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cfg, err := newClientCfg([]string{ep}, dt, sec)
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if err != nil {
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ExitWithError(ExitBadArgs, err)
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}
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cfgs = append(cfgs, cfg)
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}
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var wg sync.WaitGroup
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for _, cfg := range cfgs {
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wg.Add(1)
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go func(cfg *v3.Config) {
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defer wg.Done()
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ep := cfg.Endpoints[0]
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cli, err := v3.New(*cfg)
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if err != nil {
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fmt.Printf("%s is unhealthy: failed to connect: %v\n", ep, err)
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return
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}
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st := time.Now()
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// get a random key. As long as we can get the response without an error, the
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// endpoint is health.
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ctx, cancel := commandCtx(cmd)
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_, err = cli.Get(ctx, "health")
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cancel()
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if err != nil {
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fmt.Printf("%s is unhealthy: failed to commit proposal: %v\n", ep, err)
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} else {
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fmt.Printf("%s is healthy: successfully committed proposal: took = %v\n", ep, time.Since(st))
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}
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}(cfg)
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}
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wg.Wait()
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}
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type epStatus struct {
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Ep string `json:"Endpoint"`
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Resp *v3.StatusResponse `json:"Status"`
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}
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func epStatusCommandFunc(cmd *cobra.Command, args []string) {
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c := mustClientFromCmd(cmd)
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statusList := []epStatus{}
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var err error
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for _, ep := range c.Endpoints() {
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ctx, cancel := commandCtx(cmd)
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resp, serr := c.Status(ctx, ep)
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cancel()
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if serr != nil {
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err = serr
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fmt.Fprintf(os.Stderr, "Failed to get the status of endpoint %s (%v)\n", ep, serr)
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continue
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}
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statusList = append(statusList, epStatus{Ep: ep, Resp: resp})
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}
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display.EndpointStatus(statusList)
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if err != nil {
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os.Exit(ExitError)
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}
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}
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