mirror of
https://github.com/hibiken/asynq.git
synced 2025-04-22 08:40:22 +08:00
dd25028027
* Rename ServerStatus to ServerState internally * Rename terminate to shutdown internally * Update Scheduler API to match Server API
116 lines
2.6 KiB
Go
116 lines
2.6 KiB
Go
// Copyright 2020 Kentaro Hibino. All rights reserved.
|
|
// Use of this source code is governed by a MIT license
|
|
// that can be found in the LICENSE file.
|
|
|
|
package cmd
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
"sort"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/spf13/cobra"
|
|
)
|
|
|
|
func init() {
|
|
rootCmd.AddCommand(serverCmd)
|
|
serverCmd.AddCommand(serverListCmd)
|
|
}
|
|
|
|
var serverCmd = &cobra.Command{
|
|
Use: "server",
|
|
Short: "Manage servers",
|
|
}
|
|
|
|
var serverListCmd = &cobra.Command{
|
|
Use: "ls",
|
|
Short: "List servers",
|
|
Long: `Server list (asynq server ls) shows all running worker servers
|
|
pulling tasks from the given redis instance.
|
|
|
|
The command shows the following for each server:
|
|
* Host and PID of the process in which the server is running
|
|
* Number of active workers out of worker pool
|
|
* Queue configuration
|
|
* State of the worker server ("active" | "stopped")
|
|
* Time the server was started
|
|
|
|
A "active" server is pulling tasks from queues and processing them.
|
|
A "stopped" server is no longer pulling new tasks from queues`,
|
|
Run: serverList,
|
|
}
|
|
|
|
func serverList(cmd *cobra.Command, args []string) {
|
|
r := createRDB()
|
|
|
|
servers, err := r.ListServers()
|
|
if err != nil {
|
|
fmt.Println(err)
|
|
os.Exit(1)
|
|
}
|
|
if len(servers) == 0 {
|
|
fmt.Println("No running servers")
|
|
return
|
|
}
|
|
|
|
// sort by hostname and pid
|
|
sort.Slice(servers, func(i, j int) bool {
|
|
x, y := servers[i], servers[j]
|
|
if x.Host != y.Host {
|
|
return x.Host < y.Host
|
|
}
|
|
return x.PID < y.PID
|
|
})
|
|
|
|
// print server info
|
|
cols := []string{"Host", "PID", "State", "Active Workers", "Queues", "Started"}
|
|
printRows := func(w io.Writer, tmpl string) {
|
|
for _, info := range servers {
|
|
fmt.Fprintf(w, tmpl,
|
|
info.Host, info.PID, info.Status,
|
|
fmt.Sprintf("%d/%d", info.ActiveWorkerCount, info.Concurrency),
|
|
formatQueues(info.Queues), timeAgo(info.Started))
|
|
}
|
|
}
|
|
printTable(cols, printRows)
|
|
}
|
|
|
|
func formatQueues(qmap map[string]int) string {
|
|
// sort queues by priority and name
|
|
type queue struct {
|
|
name string
|
|
priority int
|
|
}
|
|
var queues []*queue
|
|
for qname, p := range qmap {
|
|
queues = append(queues, &queue{qname, p})
|
|
}
|
|
sort.Slice(queues, func(i, j int) bool {
|
|
x, y := queues[i], queues[j]
|
|
if x.priority != y.priority {
|
|
return x.priority > y.priority
|
|
}
|
|
return x.name < y.name
|
|
})
|
|
|
|
var b strings.Builder
|
|
l := len(queues)
|
|
for _, q := range queues {
|
|
fmt.Fprintf(&b, "%s:%d", q.name, q.priority)
|
|
l--
|
|
if l > 0 {
|
|
b.WriteString(" ")
|
|
}
|
|
}
|
|
return b.String()
|
|
}
|
|
|
|
// timeAgo takes a time and returns a string of the format "<duration> ago".
|
|
func timeAgo(since time.Time) string {
|
|
d := time.Since(since).Round(time.Second)
|
|
return fmt.Sprintf("%v ago", d)
|
|
}
|