下面列出了java.util.concurrent.CompletableFuture#completeAsync ( ) 实例代码,或者点击链接到github查看源代码,也可以在右侧发表评论。
@Override
void completeResponse(Response r) {
HttpResponseImpl.logResponse(r);
pushCF.complete(r); // not strictly required for push API
// start reading the body using the obtained BodyProcessor
CompletableFuture<Void> start = new MinimalFuture<>();
start.thenCompose( v -> readBodyAsync(getPushHandler(), false, getExchange().executor()))
.whenComplete((T body, Throwable t) -> {
if (t != null) {
responseCF.completeExceptionally(t);
} else {
HttpResponseImpl<T> response = new HttpResponseImpl<>(r.request, r, body, getExchange());
responseCF.complete(response);
}
});
start.completeAsync(() -> null, getExchange().executor());
}
CompletableFuture<U> multiResponseAsync() {
CompletableFuture<Void> start = new MinimalFuture<>();
CompletableFuture<HttpResponseImpl<T>> cf = responseAsync0(start);
CompletableFuture<HttpResponse<T>> mainResponse =
cf.thenApply((HttpResponseImpl<T> b) -> {
multiResponseHandler.onResponse(b);
return (HttpResponse<T>)b;
});
pushGroup.setMainResponse(mainResponse);
// set up house-keeping related to multi-response
mainResponse.thenAccept((r) -> {
// All push promises received by now.
pushGroup.noMorePushes(true);
});
CompletableFuture<U> res = multiResponseHandler.completion(pushGroup.groupResult(), pushGroup.pushesCF());
start.completeAsync( () -> null, executor); // trigger execution
return res;
}
public Future<Void> getLinkAttachedProbe() {
Objects.requireNonNull(this.client);
if (client.getLinkAttached() != null) {
return client.getLinkAttached();
} else {
CompletableFuture<Void> defaultWait = new CompletableFuture<Void>();
defaultWait.completeAsync(() -> {
try {
Thread.sleep(14000);
} catch (Exception e) {
LOGGER.error("Error in default wait for link attached", e);
}
return null;
}, r -> new Thread(r).start());
return defaultWait;
}
}
public static <U> CompletableFuture<U> supply(ExceptionalSupplier<U> supplier, Executor executor) {
CompletableFuture<U> cf = new MinimalFuture<>();
cf.completeAsync( () -> {
try {
return supplier.get();
} catch (Throwable ex) {
throw new CompletionException(ex);
}
}, executor);
return cf;
}
/**
* completeAsync completes with value of given supplier
*/
public void testCompleteAsync() {
for (Integer v1 : new Integer[] { 1, null })
{
CompletableFuture<Integer> f = new CompletableFuture<>();
f.completeAsync(() -> v1);
f.join();
checkCompletedNormally(f, v1);
}}
/**
* completeAsync completes exceptionally if given supplier throws
*/
public void testCompleteAsync2() {
CompletableFuture<Integer> f = new CompletableFuture<>();
CFException ex = new CFException();
f.completeAsync(() -> { throw ex; });
try {
f.join();
shouldThrow();
} catch (CompletionException success) {}
checkCompletedWithWrappedException(f, ex);
}
/**
* completeAsync with given executor completes with value of given supplier
*/
public void testCompleteAsync3() {
for (Integer v1 : new Integer[] { 1, null })
{
CompletableFuture<Integer> f = new CompletableFuture<>();
ThreadExecutor executor = new ThreadExecutor();
f.completeAsync(() -> v1, executor);
assertSame(v1, f.join());
checkCompletedNormally(f, v1);
assertEquals(1, executor.count.get());
}}
/**
* completeAsync with given executor completes exceptionally if
* given supplier throws
*/
public void testCompleteAsync4() {
CompletableFuture<Integer> f = new CompletableFuture<>();
CFException ex = new CFException();
ThreadExecutor executor = new ThreadExecutor();
f.completeAsync(() -> { throw ex; }, executor);
try {
f.join();
shouldThrow();
} catch (CompletionException success) {}
checkCompletedWithWrappedException(f, ex);
assertEquals(1, executor.count.get());
}
@Test
void makeContextAwareCompletableFutureUsingCompleteAsync() throws Exception {
final RequestContext context =
ServiceRequestContext.builder(HttpRequest.of(HttpMethod.GET, "/")).build();
final CompletableFuture<String> originalFuture = new CompletableFuture<>();
final CompletableFuture<String> contextAwareFuture = context.makeContextAware(originalFuture);
final CompletableFuture<String> resultFuture = contextAwareFuture.completeAsync(() -> "success");
originalFuture.complete("success");
assertThat(resultFuture.get()).isEqualTo("success");
}
@Test
void makeContextAwareCompletableFutureUsingCompleteAsyncWithExecutor() throws Exception {
final ExecutorService executor = Executors.newFixedThreadPool(2);
final RequestContext context =
ServiceRequestContext.builder(HttpRequest.of(HttpMethod.GET, "/")).build();
final CompletableFuture<String> originalFuture = new CompletableFuture<>();
final CompletableFuture<String> contextAwareFuture = context.makeContextAware(originalFuture);
final CompletableFuture<String> resultFuture = contextAwareFuture.completeAsync(() -> "success",
executor);
originalFuture.complete("success");
assertThat(resultFuture.get()).isEqualTo("success");
}
/**
* completeAsync completes with value of given supplier
*/
public void testCompleteAsync() {
for (Integer v1 : new Integer[] { 1, null })
{
CompletableFuture<Integer> f = new CompletableFuture<>();
f.completeAsync(() -> v1);
f.join();
checkCompletedNormally(f, v1);
}}
/**
* completeAsync completes exceptionally if given supplier throws
*/
public void testCompleteAsync2() {
CompletableFuture<Integer> f = new CompletableFuture<>();
CFException ex = new CFException();
f.completeAsync(() -> {if (true) throw ex; return 1;});
try {
f.join();
shouldThrow();
} catch (CompletionException success) {}
checkCompletedWithWrappedException(f, ex);
}
/**
* completeAsync with given executor completes with value of given supplier
*/
public void testCompleteAsync3() {
for (Integer v1 : new Integer[] { 1, null })
{
CompletableFuture<Integer> f = new CompletableFuture<>();
ThreadExecutor executor = new ThreadExecutor();
f.completeAsync(() -> v1, executor);
assertSame(v1, f.join());
checkCompletedNormally(f, v1);
assertEquals(1, executor.count.get());
}}
/**
* completeAsync with given executor completes exceptionally if
* given supplier throws
*/
public void testCompleteAsync4() {
CompletableFuture<Integer> f = new CompletableFuture<>();
CFException ex = new CFException();
ThreadExecutor executor = new ThreadExecutor();
f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
try {
f.join();
shouldThrow();
} catch (CompletionException success) {}
checkCompletedWithWrappedException(f, ex);
assertEquals(1, executor.count.get());
}
private void closeNextStatement(Iterator<PooledPgPreparedStatement> statementsSource, CompletableFuture<Void> onComplete) {
if (statementsSource.hasNext()) {
statementsSource.next().delegate.close()
.thenAccept(v -> {
statementsSource.remove();
closeNextStatement(statementsSource, onComplete);
})
.exceptionally(th -> {
futuresExecutor.execute(() -> onComplete.completeExceptionally(th));
return null;
});
} else {
onComplete.completeAsync(() -> null, futuresExecutor);
}
}
@Test
public void testDelay () throws Exception {
Object input = new Object();
CompletableFuture<Object> future = new CompletableFuture<>();
future.completeAsync(() -> input, CompletableFuture.delayedExecutor(1, TimeUnit.SECONDS));
Thread.sleep(100);
assertFalse(future.isDone());
Thread.sleep(1000);
assertTrue(future.isDone());
assertSame(input, future.get());
}
public CompletableFuture<HttpResponseImpl<T>> responseAsync() {
CompletableFuture<Void> start = new MinimalFuture<>();
CompletableFuture<HttpResponseImpl<T>> cf = responseAsync0(start);
start.completeAsync( () -> null, executor); // trigger execution
return cf;
}
@Override
public CompletableFuture<Connection> getConnection() {
CompletableFuture<Connection> uponAvailable = new CompletableFuture<>();
lock.lock();
try {
if (closed) {
futuresExecutor.execute(() -> uponAvailable.completeExceptionally(new SqlException("Connection pool is closed")));
} else {
Connection connection = connections.poll();
if (connection != null) {
uponAvailable.completeAsync(() -> connection, futuresExecutor);
} else {
if (tryIncreaseSize()) {
new PooledPgConnection(new PgConnection(toStream.apply(futuresExecutor), dataConverter, encoding))
.connect(username, password, database)
.thenApply(pooledConnection -> {
if (validationQuery != null && !validationQuery.isBlank()) {
return pooledConnection.completeScript(validationQuery)
.handle((rss, th) -> {
if (th != null) {
return ((PooledPgConnection) pooledConnection).delegate.close()
.thenApply(v -> CompletableFuture.<Connection>failedFuture(th))
.thenCompose(Function.identity());
} else {
return CompletableFuture.completedFuture(pooledConnection);
}
})
.thenCompose(Function.identity());
} else {
return CompletableFuture.completedFuture(pooledConnection);
}
})
.thenCompose(Function.identity())
.thenAccept(pooledConnection -> uponAvailable.completeAsync(() -> pooledConnection, futuresExecutor))
.exceptionally(th -> {
lock.lock();
try {
size--;
futuresExecutor.execute(() -> uponAvailable.completeExceptionally(th));
return null;
} finally {
lock.unlock();
}
});
} else {
// Pool is full now and all connections are busy
subscribers.offer(uponAvailable);
}
}
}
} finally {
lock.unlock();
}
return uponAvailable;
}