Examples with ShutdownCommand org.apache.hc.core5.http.nio.command.ShutdownCommand used on opensource projects

Example 1 with ShutdownCommand

use of org.apache.hc.core5.http.nio.command.ShutdownCommand in project httpcomponents-core by apache.

the class AbstractH2StreamMultiplexer method processPendingCommands.

private void processPendingCommands() throws IOException, HttpException {
    while (streamMap.size() < remoteConfig.getMaxConcurrentStreams()) {
        final Command command = ioSession.poll();
        if (command == null) {
            break;
        }
        if (command instanceof ShutdownCommand) {
            final ShutdownCommand shutdownCommand = (ShutdownCommand) command;
            if (shutdownCommand.getType() == CloseMode.IMMEDIATE) {
                for (final Iterator<Map.Entry<Integer, H2Stream>> it = streamMap.entrySet().iterator(); it.hasNext(); ) {
                    final Map.Entry<Integer, H2Stream> entry = it.next();
                    final H2Stream stream = entry.getValue();
                    stream.cancel();
                }
                streamMap.clear();
                connState = ConnectionHandshake.SHUTDOWN;
            } else {
                if (connState.compareTo(ConnectionHandshake.ACTIVE) <= 0) {
                    final RawFrame goAway = frameFactory.createGoAway(processedRemoteStreamId, H2Error.NO_ERROR, "Graceful shutdown");
                    commitFrame(goAway);
                    connState = streamMap.isEmpty() ? ConnectionHandshake.SHUTDOWN : ConnectionHandshake.GRACEFUL_SHUTDOWN;
                }
            }
            break;
        } else if (command instanceof PingCommand) {
            final PingCommand pingCommand = (PingCommand) command;
            final AsyncPingHandler handler = pingCommand.getHandler();
            pingHandlers.add(handler);
            final RawFrame ping = frameFactory.createPing(handler.getData());
            commitFrame(ping);
        } else if (command instanceof ExecutableCommand) {
            final int streamId = generateStreamId();
            final H2StreamChannelImpl channel = new H2StreamChannelImpl(streamId, true, initInputWinSize, initOutputWinSize);
            final ExecutableCommand executableCommand = (ExecutableCommand) command;
            final H2StreamHandler streamHandler = createLocallyInitiatedStream(executableCommand, channel, httpProcessor, connMetrics);
            final H2Stream stream = new H2Stream(channel, streamHandler, false);
            streamMap.put(streamId, stream);
            if (streamListener != null) {
                final int initInputWindow = stream.getInputWindow().get();
                streamListener.onInputFlowControl(this, streamId, initInputWindow, initInputWindow);
                final int initOutputWindow = stream.getOutputWindow().get();
                streamListener.onOutputFlowControl(this, streamId, initOutputWindow, initOutputWindow);
            }
            if (stream.isOutputReady()) {
                stream.produceOutput();
            }
            final CancellableDependency cancellableDependency = executableCommand.getCancellableDependency();
            if (cancellableDependency != null) {
                cancellableDependency.setDependency(stream::abort);
            }
            if (!outputQueue.isEmpty()) {
                return;
            }
        }
    }
}

Example 2 with ShutdownCommand

use of org.apache.hc.core5.http.nio.command.ShutdownCommand in project httpcomponents-core by apache.

the class AbstractHttp1StreamDuplexer method processCommands.

private void processCommands() throws HttpException, IOException {
    for (; ; ) {
        final Command command = ioSession.poll();
        if (command == null) {
            return;
        }
        if (command instanceof ShutdownCommand) {
            final ShutdownCommand shutdownCommand = (ShutdownCommand) command;
            requestShutdown(shutdownCommand.getType());
        } else if (command instanceof RequestExecutionCommand) {
            if (connState.compareTo(ConnectionState.GRACEFUL_SHUTDOWN) >= 0) {
                command.cancel();
            } else {
                execute((RequestExecutionCommand) command);
                return;
            }
        } else {
            throw new HttpException("Unexpected command: " + command.getClass());
        }
    }
}