DefaultChannelConfig Class — netty Architecture

Source Code

transport/src/main/java/io/netty/channel/DefaultChannelConfig.java lines 47–442

public class DefaultChannelConfig implements ChannelConfig {
    private static final MessageSizeEstimator DEFAULT_MSG_SIZE_ESTIMATOR = DefaultMessageSizeEstimator.DEFAULT;

    private static final int DEFAULT_CONNECT_TIMEOUT = 30000;

    private static final AtomicIntegerFieldUpdater<DefaultChannelConfig> AUTOREAD_UPDATER =
            AtomicIntegerFieldUpdater.newUpdater(DefaultChannelConfig.class, "autoRead");
    private static final AtomicReferenceFieldUpdater<DefaultChannelConfig, WriteBufferWaterMark> WATERMARK_UPDATER =
            AtomicReferenceFieldUpdater.newUpdater(
                    DefaultChannelConfig.class, WriteBufferWaterMark.class, "writeBufferWaterMark");

    protected final Channel channel;

    private volatile ByteBufAllocator allocator = ByteBufAllocator.DEFAULT;
    private volatile RecvByteBufAllocator rcvBufAllocator;
    private volatile MessageSizeEstimator msgSizeEstimator = DEFAULT_MSG_SIZE_ESTIMATOR;

    private volatile int connectTimeoutMillis = DEFAULT_CONNECT_TIMEOUT;
    private volatile int writeSpinCount = 16;
    private volatile int maxMessagesPerWrite = Integer.MAX_VALUE;

    @SuppressWarnings("FieldMayBeFinal")
    private volatile int autoRead = 1;
    private volatile boolean autoClose = true;
    private volatile WriteBufferWaterMark writeBufferWaterMark = WriteBufferWaterMark.DEFAULT;
    private volatile boolean pinEventExecutor = true;

    public DefaultChannelConfig(Channel channel) {
        this(channel, new AdaptiveRecvByteBufAllocator());
    }

    protected DefaultChannelConfig(Channel channel, RecvByteBufAllocator allocator) {
        setRecvByteBufAllocator(allocator, channel.metadata());
        this.channel = channel;
    }

    @Override
    @SuppressWarnings("deprecation")
    public Map<ChannelOption<?>, Object> getOptions() {
        return getOptions(
                null,
                CONNECT_TIMEOUT_MILLIS, MAX_MESSAGES_PER_READ, WRITE_SPIN_COUNT,
                ALLOCATOR, AUTO_READ, AUTO_CLOSE, RECVBUF_ALLOCATOR, WRITE_BUFFER_HIGH_WATER_MARK,
                WRITE_BUFFER_LOW_WATER_MARK, WRITE_BUFFER_WATER_MARK, MESSAGE_SIZE_ESTIMATOR,
                SINGLE_EVENTEXECUTOR_PER_GROUP, MAX_MESSAGES_PER_WRITE);
    }

    protected Map<ChannelOption<?>, Object> getOptions(
            Map<ChannelOption<?>, Object> result, ChannelOption<?>... options) {
        if (result == null) {
            result = new IdentityHashMap<ChannelOption<?>, Object>();
        }
        for (ChannelOption<?> o: options) {
            result.put(o, getOption(o));
        }
        return result;
    }

    @SuppressWarnings("unchecked")
    @Override
    public boolean setOptions(Map<ChannelOption<?>, ?> options) {
        ObjectUtil.checkNotNull(options, "options");

        boolean setAllOptions = true;
        for (Entry<ChannelOption<?>, ?> e: options.entrySet()) {
            if (!setOption((ChannelOption<Object>) e.getKey(), e.getValue())) {
                setAllOptions = false;
            }
        }

        return setAllOptions;
    }

    @Override
    @SuppressWarnings({ "unchecked", "deprecation" })
    public <T> T getOption(ChannelOption<T> option) {
        ObjectUtil.checkNotNull(option, "option");

        if (option == CONNECT_TIMEOUT_MILLIS) {
            return (T) Integer.valueOf(getConnectTimeoutMillis());
        }