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Merge pull request #337 from jboner/wip-1828-document-ec-√

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Adding example on how to roll your own ExecutionContext
This commit is contained in:
viktorklang 2012-02-20 12:59:38 -08:00
commit c435f10613
4 changed files with 55 additions and 15 deletions
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44
akka-docs/java/code/akka/docs/future/FutureDocTestBase.java
View file

@ -5,8 +5,6 @@ package akka.docs.future;
//#imports1
import akka.dispatch.*;
import akka.japi.Procedure;
import akka.japi.Procedure2;
import akka.util.Timeout;
//#imports1
@ -41,9 +39,17 @@ import static akka.dispatch.Futures.reduce;
//#imports6
//#imports7
import akka.dispatch.ExecutionContexts;
import akka.dispatch.ExecutionContextExecutorService;
//#imports7
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.junit.After;
import org.junit.Before;
@ -73,6 +79,20 @@ public class FutureDocTestBase {
system.shutdown();
}
@Test public void useCustomExecutionContext() throws Exception {
ExecutorService yourExecutorServiceGoesHere = Executors.newSingleThreadExecutor();
//#diy-execution-context
ExecutionContextExecutorService ec =
ExecutionContexts.fromExecutorService(yourExecutorServiceGoesHere);
//Use ec with your Futures
Future<String> f1 = Futures.successful("foo", ec);
// Then you shut the ec down somewhere at the end of your program/application.
ec.shutdown();
//#diy-execution-context
}
@Test
public void useBlockingFromActor() throws Exception {
ActorRef actor = system.actorOf(new Props(MyActor.class));
@ -324,10 +344,10 @@ public class FutureDocTestBase {
public void useAndThen() {
//#and-then
Future<String> future1 = Futures.successful("value", system.dispatcher()).andThen(new OnComplete<String>() {
public void onComplete(Throwable failure, String result) {
if (failure != null)
sendToIssueTracker(failure);
}
public void onComplete(Throwable failure, String result) {
if (failure != null)
sendToIssueTracker(failure);
}
}).andThen(new OnComplete<String>() {
public void onComplete(Throwable failure, String result) {
if (result != null)
@ -416,13 +436,13 @@ public class FutureDocTestBase {
Future<String> future = Futures.successful("foo", system.dispatcher());
//#onComplete
future.onComplete(new OnComplete<String>() {
public void onComplete(Throwable failure, String result) {
if (failure != null) {
//We got a failure, handle it here
} else {
// We got a result, do something with it
public void onComplete(Throwable failure, String result) {
if (failure != null) {
//We got a failure, handle it here
} else {
// We got a result, do something with it
}
}
}
});
//#onComplete
}

3
akka-docs/java/futures.rst
View file

@ -22,6 +22,9 @@ which is very similar to a ``java.util.concurrent.Executor``. if you have an ``A
it will use its default dispatcher as the ``ExecutionContext``, or you can use the factory methods provided
by the ``ExecutionContexts`` class to wrap ``Executors`` and ``ExecutorServices``, or even create your own.
.. includecode:: code/akka/docs/future/FutureDocTestBase.java
:include: imports1,imports7,diy-execution-context
Use with Actors
---------------