forked from itspage/go-platform
/
event.go
89 lines (70 loc) · 1.49 KB
/
event.go
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package main
import (
"encoding/json"
"fmt"
"math/rand"
"time"
"github.com/micro/go-micro/cmd"
"github.com/micro/go-os/event"
"golang.org/x/net/context"
)
var (
types = []string{"Provisioned", "Restarted", "Deprovisioned"}
)
type Data struct {
Foo string
Bar int64
}
func init() {
rand.Seed(time.Now().UnixNano())
}
func randType() string {
return types[rand.Int()%len(types)]
}
func pub(ev event.Event) {
origin := "ev-client"
rootId := fmt.Sprintf("root.%s.%d", origin, time.Now().UnixNano())
b, _ := json.Marshal(&Data{
Foo: "foo",
Bar: time.Now().Unix(),
})
for i := 0; i < 10; i++ {
r := &event.Record{
Id: fmt.Sprintf("%s.%d", origin, time.Now().UnixNano()),
Type: "agent." + randType(),
Origin: origin,
Timestamp: time.Now().Unix(),
RootId: rootId,
Metadata: map[string]string{
"state": "update",
"action": "dosomething",
"message": "some event",
},
Data: string(b),
}
fmt.Println("Sending event", r.Id, r.Type)
if err := ev.Publish(context.TODO(), r); err != nil {
fmt.Println(err)
}
time.Sleep(time.Millisecond * 100)
}
}
func sub(ev event.Event) {
// subscribe to event type
err := ev.Subscribe(context.TODO(), func(rec *event.Record) {
fmt.Println("Received event", rec.Id, rec.Type)
}, "agent."+randType())
if err != nil {
fmt.Println(err)
return
}
}
func main() {
cmd.Init()
// create event handler
ev := event.NewEvent()
// subscribe to events
go sub(ev)
// publish events
pub(ev)
}