micro/examples/pubsub/main.go

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package main
import (
"fmt"
"time"
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log "github.com/golang/glog"
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"github.com/myodc/go-micro/broker"
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"github.com/myodc/go-micro/cmd"
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)
var (
topic = "go.micro.topic.foo"
)
func pub() {
tick := time.NewTicker(time.Second)
i := 0
for _ = range tick.C {
msg := &broker.Message{
Header: map[string]string{
"id": fmt.Sprintf("%d", i),
},
Body: []byte(fmt.Sprintf("%d: %s", i, time.Now().String())),
}
if err := broker.Publish(topic, msg); err != nil {
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log.Errorf("[pub] failed: %v", err)
} else {
fmt.Println("[pub] pubbed message:", string(msg.Body))
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}
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i++
}
}
func sub() {
_, err := broker.Subscribe(topic, func(msg *broker.Message) {
fmt.Println("[sub] received message:", string(msg.Body), "header", msg.Header)
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})
if err != nil {
fmt.Println(err)
}
}
func main() {
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cmd.Init()
if err := broker.Init(); err != nil {
log.Fatalf("Broker Init error: %v", err)
}
if err := broker.Connect(); err != nil {
log.Fatalf("Broker Connect error: %v", err)
}
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go pub()
go sub()
<-time.After(time.Second * 10)
}