Examples with AddCredit org.apache.flink.runtime.io.network.netty.NettyMessage.AddCredit used on opensource projects

Example 1 with AddCredit

use of org.apache.flink.runtime.io.network.netty.NettyMessage.AddCredit in project flink by apache.

the class PartitionRequestServerHandler method channelRead0.

@Override
protected void channelRead0(ChannelHandlerContext ctx, NettyMessage msg) throws Exception {
    try {
        Class<?> msgClazz = msg.getClass();
        // ----------------------------------------------------------------
        if (msgClazz == PartitionRequest.class) {
            PartitionRequest request = (PartitionRequest) msg;
            LOG.debug("Read channel on {}: {}.", ctx.channel().localAddress(), request);
            try {
                NetworkSequenceViewReader reader;
                reader = new CreditBasedSequenceNumberingViewReader(request.receiverId, request.credit, outboundQueue);
                reader.requestSubpartitionView(partitionProvider, request.partitionId, request.queueIndex);
                outboundQueue.notifyReaderCreated(reader);
            } catch (PartitionNotFoundException notFound) {
                respondWithError(ctx, notFound, request.receiverId);
            }
        } else // ----------------------------------------------------------------
        if (msgClazz == TaskEventRequest.class) {
            TaskEventRequest request = (TaskEventRequest) msg;
            if (!taskEventPublisher.publish(request.partitionId, request.event)) {
                respondWithError(ctx, new IllegalArgumentException("Task event receiver not found."), request.receiverId);
            }
        } else if (msgClazz == CancelPartitionRequest.class) {
            CancelPartitionRequest request = (CancelPartitionRequest) msg;
            outboundQueue.cancel(request.receiverId);
        } else if (msgClazz == CloseRequest.class) {
            outboundQueue.close();
        } else if (msgClazz == AddCredit.class) {
            AddCredit request = (AddCredit) msg;
            outboundQueue.addCreditOrResumeConsumption(request.receiverId, reader -> reader.addCredit(request.credit));
        } else if (msgClazz == ResumeConsumption.class) {
            ResumeConsumption request = (ResumeConsumption) msg;
            outboundQueue.addCreditOrResumeConsumption(request.receiverId, NetworkSequenceViewReader::resumeConsumption);
        } else if (msgClazz == AckAllUserRecordsProcessed.class) {
            AckAllUserRecordsProcessed request = (AckAllUserRecordsProcessed) msg;
            outboundQueue.acknowledgeAllRecordsProcessed(request.receiverId);
        } else if (msgClazz == NewBufferSize.class) {
            NewBufferSize request = (NewBufferSize) msg;
            outboundQueue.notifyNewBufferSize(request.receiverId, request.bufferSize);
        } else {
            LOG.warn("Received unexpected client request: {}", msg);
        }
    } catch (Throwable t) {
        respondWithError(ctx, t);
    }
}

Example 2 with AddCredit

use of org.apache.flink.runtime.io.network.netty.NettyMessage.AddCredit in project flink by apache.

the class CreditBasedPartitionRequestClientHandlerTest method testNotifyCreditAvailable.

/**
 * Verifies that {@link RemoteInputChannel} is enqueued in the pipeline for notifying credits,
 * and verifies the behaviour of credit notification by triggering channel's writability
 * changed.
 */
@Test
public void testNotifyCreditAvailable() throws Exception {
    final CreditBasedPartitionRequestClientHandler handler = new CreditBasedPartitionRequestClientHandler();
    final NetworkBufferAllocator allocator = new NetworkBufferAllocator(handler);
    final EmbeddedChannel channel = new EmbeddedChannel(handler);
    final PartitionRequestClient client = new NettyPartitionRequestClient(channel, handler, mock(ConnectionID.class), mock(PartitionRequestClientFactory.class));
    final NetworkBufferPool networkBufferPool = new NetworkBufferPool(10, 32);
    final SingleInputGate inputGate = createSingleInputGate(2, networkBufferPool);
    final RemoteInputChannel[] inputChannels = new RemoteInputChannel[2];
    inputChannels[0] = createRemoteInputChannel(inputGate, client);
    inputChannels[1] = createRemoteInputChannel(inputGate, client);
    try {
        inputGate.setInputChannels(inputChannels);
        final BufferPool bufferPool = networkBufferPool.createBufferPool(6, 6);
        inputGate.setBufferPool(bufferPool);
        inputGate.setupChannels();
        inputChannels[0].requestSubpartition();
        inputChannels[1].requestSubpartition();
        // The two input channels should send partition requests
        assertTrue(channel.isWritable());
        Object readFromOutbound = channel.readOutbound();
        assertThat(readFromOutbound, instanceOf(PartitionRequest.class));
        assertEquals(inputChannels[0].getInputChannelId(), ((PartitionRequest) readFromOutbound).receiverId);
        assertEquals(2, ((PartitionRequest) readFromOutbound).credit);
        readFromOutbound = channel.readOutbound();
        assertThat(readFromOutbound, instanceOf(PartitionRequest.class));
        assertEquals(inputChannels[1].getInputChannelId(), ((PartitionRequest) readFromOutbound).receiverId);
        assertEquals(2, ((PartitionRequest) readFromOutbound).credit);
        // The buffer response will take one available buffer from input channel, and it will
        // trigger
        // requesting (backlog + numExclusiveBuffers - numAvailableBuffers) floating buffers
        final BufferResponse bufferResponse1 = createBufferResponse(TestBufferFactory.createBuffer(32), 0, inputChannels[0].getInputChannelId(), 1, allocator);
        final BufferResponse bufferResponse2 = createBufferResponse(TestBufferFactory.createBuffer(32), 0, inputChannels[1].getInputChannelId(), 1, allocator);
        handler.channelRead(mock(ChannelHandlerContext.class), bufferResponse1);
        handler.channelRead(mock(ChannelHandlerContext.class), bufferResponse2);
        assertEquals(2, inputChannels[0].getUnannouncedCredit());
        assertEquals(2, inputChannels[1].getUnannouncedCredit());
        channel.runPendingTasks();
        // The two input channels should notify credits availability via the writable channel
        readFromOutbound = channel.readOutbound();
        assertThat(readFromOutbound, instanceOf(AddCredit.class));
        assertEquals(inputChannels[0].getInputChannelId(), ((AddCredit) readFromOutbound).receiverId);
        assertEquals(2, ((AddCredit) readFromOutbound).credit);
        readFromOutbound = channel.readOutbound();
        assertThat(readFromOutbound, instanceOf(AddCredit.class));
        assertEquals(inputChannels[1].getInputChannelId(), ((AddCredit) readFromOutbound).receiverId);
        assertEquals(2, ((AddCredit) readFromOutbound).credit);
        assertNull(channel.readOutbound());
        ByteBuf channelBlockingBuffer = blockChannel(channel);
        // Trigger notify credits availability via buffer response on the condition of an
        // un-writable channel
        final BufferResponse bufferResponse3 = createBufferResponse(TestBufferFactory.createBuffer(32), 1, inputChannels[0].getInputChannelId(), 1, allocator);
        handler.channelRead(mock(ChannelHandlerContext.class), bufferResponse3);
        assertEquals(1, inputChannels[0].getUnannouncedCredit());
        assertEquals(0, inputChannels[1].getUnannouncedCredit());
        channel.runPendingTasks();
        // The input channel will not notify credits via un-writable channel
        assertFalse(channel.isWritable());
        assertNull(channel.readOutbound());
        // Flush the buffer to make the channel writable again
        channel.flush();
        assertSame(channelBlockingBuffer, channel.readOutbound());
        // The input channel should notify credits via channel's writability changed event
        assertTrue(channel.isWritable());
        readFromOutbound = channel.readOutbound();
        assertThat(readFromOutbound, instanceOf(AddCredit.class));
        assertEquals(1, ((AddCredit) readFromOutbound).credit);
        assertEquals(0, inputChannels[0].getUnannouncedCredit());
        assertEquals(0, inputChannels[1].getUnannouncedCredit());
        // no more messages
        assertNull(channel.readOutbound());
    } finally {
        releaseResource(inputGate, networkBufferPool);
        channel.close();
    }
}