Examples with Bootstrap io.netty.bootstrap.Bootstrap used on opensource projects

Example 31 with Bootstrap

use of io.netty.bootstrap.Bootstrap in project netty by netty.

the class LocalChannelTest method testWriteInWritePromiseCompletePreservesOrder.

@Test
public void testWriteInWritePromiseCompletePreservesOrder() throws InterruptedException {
    Bootstrap cb = new Bootstrap();
    ServerBootstrap sb = new ServerBootstrap();
    final CountDownLatch messageLatch = new CountDownLatch(2);
    final ByteBuf data = Unpooled.wrappedBuffer(new byte[1024]);
    final ByteBuf data2 = Unpooled.wrappedBuffer(new byte[512]);
    try {
        cb.group(group1).channel(LocalChannel.class).handler(new TestHandler());
        sb.group(group2).channel(LocalServerChannel.class).childHandler(new ChannelInboundHandlerAdapter() {

            @Override
            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                final long count = messageLatch.getCount();
                if ((data.equals(msg) && count == 2) || (data2.equals(msg) && count == 1)) {
                    ReferenceCountUtil.safeRelease(msg);
                    messageLatch.countDown();
                } else {
                    super.channelRead(ctx, msg);
                }
            }
        });
        Channel sc = null;
        Channel cc = null;
        try {
            // Start server
            sc = sb.bind(TEST_ADDRESS).syncUninterruptibly().channel();
            // Connect to the server
            cc = cb.connect(sc.localAddress()).syncUninterruptibly().channel();
            final Channel ccCpy = cc;
            // Make sure a write operation is executed in the eventloop
            cc.pipeline().lastContext().executor().execute(new Runnable() {

                @Override
                public void run() {
                    ChannelPromise promise = ccCpy.newPromise();
                    promise.addListener(new ChannelFutureListener() {

                        @Override
                        public void operationComplete(ChannelFuture future) throws Exception {
                            ccCpy.writeAndFlush(data2.retainedDuplicate(), ccCpy.newPromise());
                        }
                    });
                    ccCpy.writeAndFlush(data.retainedDuplicate(), promise);
                }
            });
            assertTrue(messageLatch.await(5, SECONDS));
        } finally {
            closeChannel(cc);
            closeChannel(sc);
        }
    } finally {
        data.release();
        data2.release();
    }
}

Example 32 with Bootstrap

use of io.netty.bootstrap.Bootstrap in project netty by netty.

the class ReentrantChannelTest method testCloseInFlush.

@Test
public void testCloseInFlush() throws Exception {
    LocalAddress addr = new LocalAddress("testCloseInFlush");
    ServerBootstrap sb = getLocalServerBootstrap();
    sb.bind(addr).sync().channel();
    Bootstrap cb = getLocalClientBootstrap();
    setInterest(Event.WRITE, Event.FLUSH, Event.CLOSE, Event.EXCEPTION);
    Channel clientChannel = cb.connect(addr).sync().channel();
    clientChannel.pipeline().addLast(new ChannelOutboundHandlerAdapter() {

        @Override
        public void write(final ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
            promise.addListener(new GenericFutureListener<Future<? super Void>>() {

                @Override
                public void operationComplete(Future<? super Void> future) throws Exception {
                    ctx.channel().close();
                }
            });
            super.write(ctx, msg, promise);
            ctx.channel().flush();
        }
    });
    clientChannel.write(createTestBuf(2000)).sync();
    clientChannel.closeFuture().sync();
    assertLog("WRITE\nFLUSH\nCLOSE\n");
}

Example 33 with Bootstrap

use of io.netty.bootstrap.Bootstrap in project netty by netty.

the class ReentrantChannelTest method testWritabilityChanged.

@Test
public void testWritabilityChanged() throws Exception {
    LocalAddress addr = new LocalAddress("testWritabilityChanged");
    ServerBootstrap sb = getLocalServerBootstrap();
    sb.bind(addr).sync().channel();
    Bootstrap cb = getLocalClientBootstrap();
    setInterest(Event.WRITE, Event.FLUSH, Event.WRITABILITY);
    Channel clientChannel = cb.connect(addr).sync().channel();
    clientChannel.config().setWriteBufferLowWaterMark(512);
    clientChannel.config().setWriteBufferHighWaterMark(1024);
    // What is supposed to happen from this point:
    //
    // 1. Because this write attempt has been made from a non-I/O thread,
    //    ChannelOutboundBuffer.pendingWriteBytes will be increased before
    //    write() event is really evaluated.
    //    -> channelWritabilityChanged() will be triggered,
    //       because the Channel became unwritable.
    //
    // 2. The write() event is handled by the pipeline in an I/O thread.
    //    -> write() will be triggered.
    //
    // 3. Once the write() event is handled, ChannelOutboundBuffer.pendingWriteBytes
    //    will be decreased.
    //    -> channelWritabilityChanged() will be triggered,
    //       because the Channel became writable again.
    //
    // 4. The message is added to the ChannelOutboundBuffer and thus
    //    pendingWriteBytes will be increased again.
    //    -> channelWritabilityChanged() will be triggered.
    //
    // 5. The flush() event causes the write request in theChannelOutboundBuffer
    //    to be removed.
    //    -> flush() and channelWritabilityChanged() will be triggered.
    //
    // Note that the channelWritabilityChanged() in the step 4 can occur between
    // the flush() and the channelWritabilityChanged() in the stap 5, because
    // the flush() is invoked from a non-I/O thread while the other are from
    // an I/O thread.
    ChannelFuture future = clientChannel.write(createTestBuf(2000));
    clientChannel.flush();
    future.sync();
    clientChannel.close().sync();
    assertLog(// Case 1:
    "WRITABILITY: writable=false\n" + "WRITE\n" + "WRITABILITY: writable=false\n" + "WRITABILITY: writable=false\n" + "FLUSH\n" + "WRITABILITY: writable=true\n", // Case 2:
    "WRITABILITY: writable=false\n" + "WRITE\n" + "WRITABILITY: writable=false\n" + "FLUSH\n" + "WRITABILITY: writable=true\n" + "WRITABILITY: writable=true\n");
}

Example 34 with Bootstrap

use of io.netty.bootstrap.Bootstrap in project netty by netty.

the class SimpleChannelPoolTest method testAcquire.

@Test
public void testAcquire() throws Exception {
    EventLoopGroup group = new LocalEventLoopGroup();
    LocalAddress addr = new LocalAddress(LOCAL_ADDR_ID);
    Bootstrap cb = new Bootstrap();
    cb.remoteAddress(addr);
    cb.group(group).channel(LocalChannel.class);
    ServerBootstrap sb = new ServerBootstrap();
    sb.group(group).channel(LocalServerChannel.class).childHandler(new ChannelInitializer<LocalChannel>() {

        @Override
        public void initChannel(LocalChannel ch) throws Exception {
            ch.pipeline().addLast(new ChannelInboundHandlerAdapter());
        }
    });
    // Start server
    Channel sc = sb.bind(addr).sync().channel();
    CountingChannelPoolHandler handler = new CountingChannelPoolHandler();
    ChannelPool pool = new SimpleChannelPool(cb, handler);
    Channel channel = pool.acquire().sync().getNow();
    pool.release(channel).syncUninterruptibly();
    Channel channel2 = pool.acquire().sync().getNow();
    assertSame(channel, channel2);
    assertEquals(1, handler.channelCount());
    pool.release(channel2).syncUninterruptibly();
    // Should fail on multiple release calls.
    try {
        pool.release(channel2).syncUninterruptibly();
        fail();
    } catch (IllegalArgumentException e) {
        // expected
        assertFalse(channel.isActive());
    }
    assertEquals(1, handler.acquiredCount());
    assertEquals(2, handler.releasedCount());
    sc.close().sync();
    group.shutdownGracefully();
}

Example 35 with Bootstrap

use of io.netty.bootstrap.Bootstrap in project netty by netty.

the class SimpleChannelPoolTest method testUnhealthyChannelIsOfferedWhenNoHealthCheckRequested.

/**
     * Tests that if channel was unhealthy it is was offered back to the pool because
     * it was requested not to validate channel health on release.
     *
     * @throws Exception
     */
@Test
public void testUnhealthyChannelIsOfferedWhenNoHealthCheckRequested() throws Exception {
    EventLoopGroup group = new LocalEventLoopGroup();
    LocalAddress addr = new LocalAddress(LOCAL_ADDR_ID);
    Bootstrap cb = new Bootstrap();
    cb.remoteAddress(addr);
    cb.group(group).channel(LocalChannel.class);
    ServerBootstrap sb = new ServerBootstrap();
    sb.group(group).channel(LocalServerChannel.class).childHandler(new ChannelInitializer<LocalChannel>() {

        @Override
        public void initChannel(LocalChannel ch) throws Exception {
            ch.pipeline().addLast(new ChannelInboundHandlerAdapter());
        }
    });
    // Start server
    Channel sc = sb.bind(addr).syncUninterruptibly().channel();
    ChannelPoolHandler handler = new CountingChannelPoolHandler();
    ChannelPool pool = new SimpleChannelPool(cb, handler, ChannelHealthChecker.ACTIVE, false);
    Channel channel1 = pool.acquire().syncUninterruptibly().getNow();
    channel1.close().syncUninterruptibly();
    Future<Void> releaseFuture = pool.release(channel1, channel1.eventLoop().<Void>newPromise()).syncUninterruptibly();
    assertThat(releaseFuture.isSuccess(), CoreMatchers.is(true));
    Channel channel2 = pool.acquire().syncUninterruptibly().getNow();
    //verifying that in fact the channel2 is different that means is not pulled from the pool
    assertNotSame(channel1, channel2);
    sc.close().syncUninterruptibly();
    channel2.close().syncUninterruptibly();
    group.shutdownGracefully();
}