DefaultChannelPromise Class — netty Architecture

Source Code

transport/src/main/java/io/netty/channel/DefaultChannelPromise.java lines 30–172

public class DefaultChannelPromise extends DefaultPromise<Void> implements ChannelPromise, FlushCheckpoint {

    private final Channel channel;
    private long checkpoint;

    /**
     * Creates a new instance.
     *
     * @param channel
     *        the {@link Channel} associated with this future
     */
    public DefaultChannelPromise(Channel channel) {
        this.channel = checkNotNull(channel, "channel");
    }

    /**
     * Creates a new instance.
     *
     * @param channel
     *        the {@link Channel} associated with this future
     */
    public DefaultChannelPromise(Channel channel, EventExecutor executor) {
        super(executor);
        this.channel = checkNotNull(channel, "channel");
    }

    @Override
    protected EventExecutor executor() {
        EventExecutor e = super.executor();
        if (e == null) {
            return channel().eventLoop();
        } else {
            return e;
        }
    }

    @Override
    public Channel channel() {
        return channel;
    }

    @Override
    public ChannelPromise setSuccess() {
        return setSuccess(null);
    }

    @Override
    public ChannelPromise setSuccess(Void result) {
        super.setSuccess(result);
        return this;
    }

    @Override
    public boolean trySuccess() {
        return trySuccess(null);
    }

    @Override
    public ChannelPromise setFailure(Throwable cause) {
        super.setFailure(cause);
        return this;
    }

    @Override
    public ChannelPromise addListener(GenericFutureListener<? extends Future<? super Void>> listener) {
        super.addListener(listener);
        return this;
    }

    @Override
    public ChannelPromise addListeners(GenericFutureListener<? extends Future<? super Void>>... listeners) {
        super.addListeners(listeners);
        return this;
    }

    @Override
    public ChannelPromise removeListener(GenericFutureListener<? extends Future<? super Void>> listener) {
        super.removeListener(listener);
        return this;
    }