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December 1, 2016 10:28
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Example of partitioning message over internal channels in golang
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| package main | |
| import ( | |
| "fmt" | |
| "hash/fnv" | |
| "strconv" | |
| "sync" | |
| "time" | |
| ) | |
| func main() { | |
| wg := sync.WaitGroup{} | |
| numberOfWorkers := uint64(4) | |
| channels := make([]chan string, numberOfWorkers) | |
| for i := uint64(0); i < numberOfWorkers; i++ { | |
| channels[int(i)] = make(chan string) | |
| } | |
| for i, c := range channels { | |
| go process_queue(wg, i, c) | |
| } | |
| uids := []string{"niels", "jurriaan", "arno", "daan", "martijn", "cheffrey", "koen", "martijn", "cheffrey", "koen"} | |
| h := fnv.New64a() | |
| for _, uid := range uids { | |
| h.Write([]byte(uid)) | |
| channels[h.Sum64()%numberOfWorkers] <- uid | |
| h.Reset() | |
| } | |
| time.Sleep(time.Second * 1) | |
| for _, c := range channels { | |
| close(c) | |
| } | |
| wg.Wait() | |
| } | |
| func process_queue(wg sync.WaitGroup, n int, c chan string) { | |
| name := strconv.Itoa(n) | |
| for msg := range c { | |
| fmt.Printf("Queue %s received: %s \n", name, msg) | |
| } | |
| wg.Done() | |
| } |
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Volgens mij spel je het als 'cheffrey'