Java CompletableFuture.complete方法代碼示例

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
public void testOnPingIncorrect(boolean fin, boolean rsv1, boolean rsv2,
                                boolean rsv3, ByteBuffer data) {
    if (fin && !rsv1 && !rsv2 && !rsv3 && data.remaining() <= 125) {
        throw new SkipException("Correct frame");
    }
    CompletableFuture<WebSocket> webSocket = new CompletableFuture<>();
    MockChannel channel = new MockChannel.Builder()
            .provideFrame(fin, rsv1, rsv2, rsv3, Opcode.PING, data)
            .expectClose((code, reason) ->
                    Integer.valueOf(1002).equals(code) && "".equals(reason))
            .build();
    MockListener listener = new MockListener.Builder()
            .expectOnOpen((ws) -> true)
            .expectOnError((ws, error) -> error instanceof ProtocolException)
            .build();
    webSocket.complete(newWebSocket(channel, listener));
    checkExpectations(500, TimeUnit.MILLISECONDS, channel, listener);
}
 

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
private Void handle(CompletableFuture<Response<OutputT>> future,
                    Response<OutputT> resp,
                    Throwable err) {
    try {
        if (resp != null && resp.isSuccess()) {
            retryHandler.releaseRetryCapacity();
            future.complete(resp);
        } else if (resp != null) {
            retryHandler.setLastRetriedException(handleSdkException(resp));
            executeRetry(future);
        } else {
            SdkClientException exception = new SdkClientException(err);
            retryHandler.setLastRetriedException(handleSdkException(Response.fromFailure(exception, null)));
            executeRetry(future);
        }
    } catch (Exception e) {
        future.completeExceptionally(e);
    }
    return null;
}
 

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
@Override
protected void readContent(ByteBuf in, CompletableFuture<Long> promise) {
    try {
        int before = in.readableBytes();
        sink.write(in);
        int after = in.readableBytes();
        readed += before - after;

        //處理   內容長度
        if (readed >= length) {
            promise.complete(readed);
        }
    } catch (IOException e) {
        throw new FastdfsException("write response to output error.", e);
    }
}
 

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
@Benchmark
public String flatMapPromiseN() throws InterruptedException, ExecutionException {
  CompletableFuture<String> p = new CompletableFuture<>();
  CompletableFuture<String> f = p;
  for (int i = 0; i < N.n; i++)
    f = f.thenCompose(flatMapF);
  p.complete(string);
  return f.get();
}
 

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
Connection(EventLoopGroup group) throws InterruptedException {
  final ChannelInboundHandler inboundHandler
      = new SimpleChannelInboundHandler<RaftNettyServerReplyProto>() {
    @Override
    protected void channelRead0(ChannelHandlerContext ctx,
                                RaftNettyServerReplyProto proto) {
      final CompletableFuture<RaftNettyServerReplyProto> future = pollReply();
      if (future == null) {
        throw new IllegalStateException("Request #" + getCallId(proto)
            + " not found");
      }
      if (proto.getRaftNettyServerReplyCase() == EXCEPTIONREPLY) {
        final Object ioe = ProtoUtils.toObject(proto.getExceptionReply().getException());
        future.completeExceptionally((IOException)ioe);
      } else {
        future.complete(proto);
      }
    }
  };
  final ChannelInitializer<SocketChannel> initializer
      = new ChannelInitializer<SocketChannel>() {
    @Override
    protected void initChannel(SocketChannel ch) throws Exception {
      final ChannelPipeline p = ch.pipeline();

      p.addLast(new ProtobufVarint32FrameDecoder());
      p.addLast(new ProtobufDecoder(RaftNettyServerReplyProto.getDefaultInstance()));
      p.addLast(new ProtobufVarint32LengthFieldPrepender());
      p.addLast(new ProtobufEncoder());

      p.addLast(inboundHandler);
    }
  };

  client.connect(peer.getAddress(), group, initializer);
}
 

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
@Benchmark
public String mapPromiseN() throws InterruptedException, ExecutionException {
  CompletableFuture<String> p = new CompletableFuture<String>();
  CompletableFuture<String> f = p;
  for (int i = 0; i < N.n; i++)
    f = f.thenApplyAsync(mapF);
  p.complete(string);
  return f.get();
}
 

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
@Benchmark
public Void ensurePromise() throws InterruptedException, ExecutionException {
  CompletableFuture<Void> p = new CompletableFuture<Void>();
  CompletableFuture<Void> f = p.thenRun(ensureF);
  p.complete(null);
  return f.get();
}
 

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
@Test public void testPropagateCancellation_completedResultNotPropagated() {
  CompletableFuture<String> outer = new CompletableFuture<>();
  CompletableFuture<String> inner = new CompletableFuture<>();
  assertThat(Utils.propagateCancellation(outer, inner)).isSameAs(outer);
  outer.complete("ok");
  assertThat(outer.isCancelled()).isFalse();
  assertThat(inner.isCancelled()).isFalse();
  assertThat(outer.isDone()).isTrue();
  assertThat(inner.isDone()).isFalse();
}
 

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
@Benchmark
public String flatMapPromise() throws InterruptedException, ExecutionException {
  CompletableFuture<String> p = new CompletableFuture<String>();
  p.thenCompose(flatMapF);
  p.complete(string);
  return p.get();
}
 

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
@Test public void wrapFuture_futureBecomesSuccess() throws Exception {
  CompletableFuture<String> future = new CompletableFuture<>();
  CompletionStage<Maybe<String, Exception>> stage = Maybe.catchException(Exception.class, future);
  assertPending(stage);
  future.complete("good");
  assertCompleted(stage).isEqualTo(Maybe.of("good"));
}
 

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
/**
 * This test is one part of verifying https://github.com/tunnelvisionlabs/java-threading/issues/11.
 */
@Test
public void testNotCompletedThenComposeCancelled() {
	CompletableFuture<Void> future = new CompletableFuture<>();
	CompletableFuture<Void> composed = future.thenCompose(s -> Futures.completedCancelled());
	future.complete(null);

	Assert.assertTrue(composed.isDone());
	Assert.assertTrue(composed.isCompletedExceptionally());
	Assert.assertFalse("Cancellation is not preserved when the antecedent is not completed when thenCompose is called", composed.isCancelled());

	thrown.expect(CompletionException.class);
	thrown.expectCause(isA(CancellationException.class));
	composed.join();
}
 

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
/**
 * newIncompleteFuture returns an incomplete CompletableFuture
 */
public void testNewIncompleteFuture() {
    for (Integer v1 : new Integer[] { 1, null })
{
    CompletableFuture<Integer> f = new CompletableFuture<>();
    CompletableFuture<Integer> g = f.newIncompleteFuture();
    checkIncomplete(f);
    checkIncomplete(g);
    f.complete(v1);
    checkCompletedNormally(f, v1);
    checkIncomplete(g);
    g.complete(v1);
    checkCompletedNormally(g, v1);
    assertSame(g.getClass(), CompletableFuture.class);
}}
 

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
synchronized void requestComplete() {
    number--;
    // don't unblock until number of requests has halved.
    if ((blocked && number <= maxnumber / 2) ||
                (!blocked && waiters.size() > 0)) {
        int toRelease = Math.min(maxnumber - number, waiters.size());
        for (int i=0; i<toRelease; i++) {
            CompletableFuture<Void> f = waiters.remove();
            number ++;
            f.complete(null);
        }
        blocked = number >= maxnumber;
    }
}
 

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
/**
 * runAfterBoth result completes exceptionally after exceptional
 * completion of either source
 */
public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
    for (ExecutionMode m : ExecutionMode.values())
    for (boolean fFirst : new boolean[] { true, false })
    for (boolean failFirst : new boolean[] { true, false })
    for (Integer v1 : new Integer[] { 1, null })
{
    final CompletableFuture<Integer> f = new CompletableFuture<>();
    final CompletableFuture<Integer> g = new CompletableFuture<>();
    final CFException ex = new CFException();
    final Noop r1 = new Noop(m);
    final Noop r2 = new Noop(m);
    final Noop r3 = new Noop(m);

    final CompletableFuture<Integer> fst =  fFirst ? f : g;
    final CompletableFuture<Integer> snd = !fFirst ? f : g;
    final Callable<Boolean> complete1 = failFirst ?
        () -> fst.completeExceptionally(ex) :
        () -> fst.complete(v1);
    final Callable<Boolean> complete2 = failFirst ?
        () -> snd.complete(v1) :
        () -> snd.completeExceptionally(ex);

    final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
    assertTrue(complete1.call());
    final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
    checkIncomplete(h1);
    checkIncomplete(h2);
    assertTrue(complete2.call());
    final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);

    checkCompletedWithWrappedException(h1, ex);
    checkCompletedWithWrappedException(h2, ex);
    checkCompletedWithWrappedException(h3, ex);
    r1.assertNotInvoked();
    r2.assertNotInvoked();
    r3.assertNotInvoked();
    checkCompletedNormally(failFirst ? snd : fst, v1);
    checkCompletedExceptionally(failFirst ? fst : snd, ex);
}}
 

import java.util.concurrent.CompletableFuture; //導入方法依賴的package包/類
/**
 * completeOnTimeout has no effect if completed within timeout
 */
public void testCompleteOnTimeout_completed() {
    for (Integer v1 : new Integer[] { 1, null })
{
    CompletableFuture<Integer> f = new CompletableFuture<>();
    CompletableFuture<Integer> g = new CompletableFuture<>();
    long startTime = System.nanoTime();
    f.complete(v1);
    assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
    assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
    g.complete(v1);
    checkCompletedNormally(f, v1);
    checkCompletedNormally(g, v1);
    assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
}}