Add producer/consumer example with use of queue name for distribution of messages

This commit is contained in:
Asim 2015-12-24 19:39:37 +00:00
parent 5e1a618415
commit 74714876f2
2 changed files with 100 additions and 0 deletions

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package main
import (
"fmt"
log "github.com/golang/glog"
"github.com/micro/go-micro/broker"
"github.com/micro/go-micro/cmd"
_ "github.com/micro/go-plugins/broker/rabbitmq"
)
var (
topic = "go.micro.topic.foo"
)
// Example of a shared subscription which receives a subset of messages
func sharedSub() {
_, err := broker.Subscribe(topic, func(p broker.Publication) error {
fmt.Println("[sub] received message:", string(p.Message().Body), "header", p.Message().Header)
return nil
}, broker.QueueName("consumer"))
if err != nil {
fmt.Println(err)
}
}
// Example of a subscription which receives all the messages
func sub() {
_, err := broker.Subscribe(topic, func(p broker.Publication) error {
fmt.Println("[sub] received message:", string(p.Message().Body), "header", p.Message().Header)
return nil
})
if err != nil {
fmt.Println(err)
}
}
func main() {
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)
}
sub()
select {}
}

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package main
import (
"fmt"
"time"
log "github.com/golang/glog"
"github.com/micro/go-micro/broker"
"github.com/micro/go-micro/cmd"
_ "github.com/micro/go-plugins/broker/rabbitmq"
)
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 {
log.Errorf("[pub] failed: %v", err)
} else {
fmt.Println("[pub] pubbed message:", string(msg.Body))
}
i++
}
}
func main() {
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)
}
pub()
}