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Convert UntypedActor to AbstractActor #22308

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This commit is contained in:
ortigali 2017-02-23 00:50:07 +05:00
parent 94afbee179
commit a175180b44
13 changed files with 217 additions and 264 deletions
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46
akka-docs/rst/java/code/docs/cluster/TransformationBackend.java
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@ -3,7 +3,7 @@ package docs.cluster;
import static docs.cluster.TransformationMessages.BACKEND_REGISTRATION;
import docs.cluster.TransformationMessages.TransformationJob;
import docs.cluster.TransformationMessages.TransformationResult;
import akka.actor.UntypedActor;
import akka.actor.AbstractActor;
import akka.cluster.Cluster;
import akka.cluster.ClusterEvent.CurrentClusterState;
import akka.cluster.ClusterEvent.MemberUp;
@ -11,50 +11,46 @@ import akka.cluster.Member;
import akka.cluster.MemberStatus;
//#backend
public class TransformationBackend extends UntypedActor {
public class TransformationBackend extends AbstractActor {
Cluster cluster = Cluster.get(getContext().system());
//subscribe to cluster changes, MemberUp
@Override
public void preStart() {
cluster.subscribe(getSelf(), MemberUp.class);
cluster.subscribe(self(), MemberUp.class);
}
//re-subscribe when restart
@Override
public void postStop() {
cluster.unsubscribe(getSelf());
cluster.unsubscribe(self());
}
@Override
public void onReceive(Object message) {
if (message instanceof TransformationJob) {
TransformationJob job = (TransformationJob) message;
getSender().tell(new TransformationResult(job.getText().toUpperCase()),
getSelf());
} else if (message instanceof CurrentClusterState) {
CurrentClusterState state = (CurrentClusterState) message;
for (Member member : state.getMembers()) {
if (member.status().equals(MemberStatus.up())) {
register(member);
public Receive createReceive() {
return receiveBuilder()
.match(TransformationJob.class, job -> {
sender().tell(new TransformationResult(job.getText().toUpperCase()),
self());
})
.match(CurrentClusterState.class, state -> {
for (Member member : state.getMembers()) {
if (member.status().equals(MemberStatus.up())) {
register(member);
}
}
}
} else if (message instanceof MemberUp) {
MemberUp mUp = (MemberUp) message;
register(mUp.member());
} else {
unhandled(message);
}
})
.match(MemberUp.class, mUp -> {
register(mUp.member());
})
.build();
}
void register(Member member) {
if (member.hasRole("frontend"))
getContext().actorSelection(member.address() + "/user/frontend").tell(
BACKEND_REGISTRATION, getSelf());
BACKEND_REGISTRATION, self());
}
}
//#backend