forked from gocraft/work
/
main.go
94 lines (78 loc) · 1.83 KB
/
main.go
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package main
import (
"flag"
"fmt"
"math/rand"
"time"
"github.com/gocraft/work"
"github.com/gomodule/redigo/redis"
)
var redisHostPort = flag.String("redis", ":6379", "redis hostport")
var redisNamespace = flag.String("ns", "work", "redis namespace")
func epsilonHandler(job *work.Job) error {
fmt.Println("epsilon")
time.Sleep(time.Second)
if rand.Intn(2) == 0 {
return fmt.Errorf("random error")
}
return nil
}
type context struct{}
func main() {
flag.Parse()
fmt.Println("Installing some fake data")
pool := newPool(*redisHostPort)
cleanKeyspace(pool, *redisNamespace)
// Enqueue some jobs:
go func() {
conn := pool.Get()
defer conn.Close()
conn.Do("SADD", *redisNamespace+":known_jobs", "foobar")
}()
go func() {
for {
en := work.NewEnqueuer(*redisNamespace, pool)
for i := 0; i < 20; i++ {
en.Enqueue("foobar", work.Q{"i": i})
}
time.Sleep(1 * time.Second)
}
}()
wp := work.NewWorkerPool(context{}, 5, *redisNamespace, pool)
wp.Job("foobar", epsilonHandler)
wp.Start()
select {}
}
func newPool(addr string) *redis.Pool {
return &redis.Pool{
MaxActive: 20,
MaxIdle: 20,
IdleTimeout: 240 * time.Second,
Dial: func() (redis.Conn, error) {
c, err := redis.Dial("tcp", addr)
if err != nil {
return nil, err
}
return c, nil
//return redis.NewLoggingConn(c, log.New(os.Stdout, "", 0), "redis"), err
},
Wait: true,
//TestOnBorrow: func(c redis.Conn, t time.Time) error {
// _, err := c.Do("PING")
// return err
//},
}
}
func cleanKeyspace(pool *redis.Pool, namespace string) {
conn := pool.Get()
defer conn.Close()
keys, err := redis.Strings(conn.Do("KEYS", namespace+"*"))
if err != nil {
panic("could not get keys: " + err.Error())
}
for _, k := range keys {
if _, err := conn.Do("DEL", k); err != nil {
panic("could not del: " + err.Error())
}
}
}