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improve AbstractActor, #21717

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* Receive class that wraps PartialFunction, to avoid
  scary scala types
* move AbstractActorContext to AbstractActor.ActorContext
* converting docs, many, many UntypedActor
* removing UntypedActor docs
* add unit test for ReceiveBuilder
* MiMa filters
* consistent use of getContext(), self(), sender()
* rename cross references
* migration guide
* skip samples for now
* improve match type safetyi, add matchUnchecked
  * the `? extends P` caused code like this to compile:
    `match(String.class, (Integer i) -> {})`
  * added matchUnchecked, since it can still be useful (um, convenient)
    to be able to do:
    `matchUnchecked(List.class, (List<String> list) -> {})`
* eleminate some scala.Option
  * preRestart
  * findChild
  * ActorIdentity.getActorRef
This commit is contained in:
Patrik Nordwall 2016-12-13 10:59:29 +01:00
parent 3617fe8b41
commit 4bd6b7aab1
157 changed files with 3290 additions and 8882 deletions
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61
akka-docs/rst/java/code/docs/io/japi/EchoManager.java
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@ -9,7 +9,7 @@ import java.net.InetSocketAddress;
import akka.actor.ActorRef;
import akka.actor.Props;
import akka.actor.SupervisorStrategy;
import akka.actor.UntypedActor;
import akka.actor.AbstractActor;
import akka.event.Logging;
import akka.event.LoggingAdapter;
import akka.io.Tcp;
@ -19,10 +19,10 @@ import akka.io.Tcp.CommandFailed;
import akka.io.Tcp.Connected;
import akka.io.TcpMessage;
public class EchoManager extends UntypedActor {
public class EchoManager extends AbstractActor {
final LoggingAdapter log = Logging
.getLogger(getContext().system(), getSelf());
.getLogger(getContext().system(), self());
final Class<?> handlerClass;
@ -41,41 +41,42 @@ public class EchoManager extends UntypedActor {
final ActorRef tcpManager = Tcp.get(getContext().system()).manager();
//#manager
tcpManager.tell(
TcpMessage.bind(getSelf(), new InetSocketAddress("localhost", 0), 100),
getSelf());
TcpMessage.bind(self(), new InetSocketAddress("localhost", 0), 100),
self());
}
@Override
public void postRestart(Throwable arg0) throws Exception {
// do not restart
getContext().stop(getSelf());
getContext().stop(self());
}
@Override
public void onReceive(Object msg) throws Exception {
if (msg instanceof Bound) {
log.info("listening on [{}]", ((Bound) msg).localAddress());
} else if (msg instanceof Tcp.CommandFailed) {
final CommandFailed failed = (CommandFailed) msg;
if (failed.cmd() instanceof Bind) {
log.warning("cannot bind to [{}]", ((Bind) failed.cmd()).localAddress());
getContext().stop(getSelf());
} else {
log.warning("unknown command failed [{}]", failed.cmd());
}
} else
if (msg instanceof Connected) {
final Connected conn = (Connected) msg;
log.info("received connection from [{}]", conn.remoteAddress());
final ActorRef connection = getSender();
final ActorRef handler = getContext().actorOf(
Props.create(handlerClass, connection, conn.remoteAddress()));
//#echo-manager
connection.tell(TcpMessage.register(handler,
true, // <-- keepOpenOnPeerClosed flag
true), getSelf());
//#echo-manager
}
public Receive createReceive() {
return receiveBuilder()
.match(Bound.class, msg -> {
log.info("listening on [{}]", msg.localAddress());
})
.match(Tcp.CommandFailed.class, failed -> {
if (failed.cmd() instanceof Bind) {
log.warning("cannot bind to [{}]", ((Bind) failed.cmd()).localAddress());
getContext().stop(self());
} else {
log.warning("unknown command failed [{}]", failed.cmd());
}
})
.match(Connected.class, conn -> {
log.info("received connection from [{}]", conn.remoteAddress());
final ActorRef connection = sender();
final ActorRef handler = getContext().actorOf(
Props.create(handlerClass, connection, conn.remoteAddress()));
//#echo-manager
connection.tell(TcpMessage.register(handler,
true, // <-- keepOpenOnPeerClosed flag
true), self());
//#echo-manager
})
.build();
}
}