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main.go
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main.go
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package main
import (
"fmt"
"log"
"time"
console "github.com/AsynkronIT/goconsole"
"github.com/meeypioneer/mey-actor/actor"
"github.com/meeypioneer/mey-actor/cluster"
"github.com/meeypioneer/mey-actor/cluster/consul"
"github.com/meeypioneer/mey-actor/eventstream"
"github.com/meeypioneer/mey-actor/examples/cluster/shared"
"github.com/meeypioneer/mey-actor/remote"
)
const (
timeout = 1 * time.Second
)
// Logger is message middleware which logs messages before continuing to the next middleware
func Logger(next actor.ActorFunc) actor.ActorFunc {
fn := func(context actor.Context) {
switch context.Message().(type) {
case *actor.Started:
log.Printf("actor started " + context.Self().String())
case *actor.Stopped:
log.Printf("actor stopped " + context.Self().String())
}
next(context)
}
return fn
}
func main() {
//this node knows about Hello kind
remote.Register("Hello", actor.FromProducer(func() actor.Actor {
return &shared.HelloActor{}
}).WithMiddleware(Logger))
//
eventstream.Subscribe(func(event interface{}) {
switch msg := event.(type) {
case *cluster.MemberJoinedEvent:
log.Printf("Member Joined " + msg.Name())
case *cluster.MemberLeftEvent:
log.Printf("Member Left " + msg.Name())
case *cluster.MemberRejoinedEvent:
log.Printf("Member Rejoined " + msg.Name())
case *cluster.MemberUnavailableEvent:
log.Printf("Member Unavailable " + msg.Name())
case *cluster.MemberAvailableEvent:
log.Printf("Member Available " + msg.Name())
case cluster.ClusterTopologyEvent:
log.Printf("Cluster Topology Poll")
}
})
cp, err := consul.New()
if err != nil {
log.Fatal(err)
}
cluster.Start("mycluster", "127.0.0.1:8081", cp)
sync()
async()
console.ReadLine()
}
func sync() {
hello := shared.GetHelloGrain("abc")
options := cluster.NewGrainCallOptions().WithTimeout(5 * time.Second).WithRetry(5)
res, err := hello.SayHelloWithOpts(&shared.HelloRequest{Name: "GAM"}, options)
if err != nil {
log.Fatal(err)
}
log.Printf("Message from SayHello: %v", res.Message)
for i := 0; i < 10000; i++ {
x := shared.GetHelloGrain(fmt.Sprintf("hello%v", i))
x.SayHello(&shared.HelloRequest{Name: "GAM"})
}
log.Println("Done")
}
func async() {
hello := shared.GetHelloGrain("abc")
c, e := hello.AddChan(&shared.AddRequest{A: 123, B: 456})
for {
select {
case <-time.After(100 * time.Millisecond):
log.Println("Tick..") //this might not happen if res returns fast enough
case err := <-e:
log.Fatal(err)
case res := <-c:
log.Printf("Result is %v", res.Result)
return
}
}
}