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asynq/example_test.go
2020-10-13 06:31:47 -07:00

116 lines
2.3 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 asynq_test
import (
"fmt"
"log"
"os"
"os/signal"
"time"
"github.com/hibiken/asynq"
"golang.org/x/sys/unix"
)
func ExampleServer_Run() {
srv := asynq.NewServer(
asynq.RedisClientOpt{Addr: ":6379"},
asynq.Config{Concurrency: 20},
)
h := asynq.NewServeMux()
// ... Register handlers
// Run blocks and waits for os signal to terminate the program.
if err := srv.Run(h); err != nil {
log.Fatal(err)
}
}
func ExampleServer_Stop() {
srv := asynq.NewServer(
asynq.RedisClientOpt{Addr: ":6379"},
asynq.Config{Concurrency: 20},
)
h := asynq.NewServeMux()
// ... Register handlers
if err := srv.Start(h); err != nil {
log.Fatal(err)
}
sigs := make(chan os.Signal, 1)
signal.Notify(sigs, unix.SIGTERM, unix.SIGINT)
<-sigs // wait for termination signal
srv.Stop()
}
func ExampleServer_Quiet() {
srv := asynq.NewServer(
asynq.RedisClientOpt{Addr: ":6379"},
asynq.Config{Concurrency: 20},
)
h := asynq.NewServeMux()
// ... Register handlers
if err := srv.Start(h); err != nil {
log.Fatal(err)
}
sigs := make(chan os.Signal, 1)
signal.Notify(sigs, unix.SIGTERM, unix.SIGINT, unix.SIGTSTP)
// Handle SIGTERM, SIGINT to exit the program.
// Handle SIGTSTP to stop processing new tasks.
for {
s := <-sigs
if s == unix.SIGTSTP {
srv.Quiet() // stop processing new tasks
continue
}
break
}
srv.Stop()
}
func ExampleScheduler() {
scheduler := asynq.NewScheduler(
asynq.RedisClientOpt{Addr: ":6379"},
&asynq.SchedulerOpts{Location: time.Local},
)
if _, err := scheduler.Register("* * * * *", asynq.NewTask("task1", nil)); err != nil {
log.Fatal(err)
}
if _, err := scheduler.Register("@every 30s", asynq.NewTask("task2", nil)); err != nil {
log.Fatal(err)
}
// Run blocks and waits for os signal to terminate the program.
if err := scheduler.Run(); err != nil {
log.Fatal(err)
}
}
func ExampleParseRedisURI() {
rconn, err := asynq.ParseRedisURI("redis://localhost:6379/10")
if err != nil {
log.Fatal(err)
}
r, ok := rconn.(asynq.RedisClientOpt)
if !ok {
log.Fatal("unexpected type")
}
fmt.Println(r.Addr)
fmt.Println(r.DB)
// Output:
// localhost:6379
// 10
}