Example usage for io.netty.channel ChannelPromise trySuccess

Introduction

In this page you can find the example usage for io.netty.channel ChannelPromise trySuccess.

Prototype

boolean trySuccess();

Source Link

Usage

From source file:reactor.ipc.netty.channel.NettyOperations.java

License:Open Source License

/**
 * Callback when a writer {@link Subscriber} has effectively terminated listening
 * on further {@link Publisher} signals.
 *
 * @param ctx the actual {@link ChannelHandlerContext}
 * @param last an optional callback for the last written payload
 * @param promise the promise to fulfil for acknowledging termination success
 * @param exception non null if the writer has terminated with a failure
 *///from   w ww  . j  a  va  2s.com
protected void doOnTerminatedWriter(ChannelHandlerContext ctx, ChannelFuture last, final ChannelPromise promise,
        final Throwable exception) {
    if (ctx.channel().isOpen()) {
        ChannelFutureListener listener = future -> {
            if (exception != null) {
                promise.tryFailure(exception);
            } else if (future.isSuccess()) {
                promise.trySuccess();
            } else {
                promise.tryFailure(future.cause());
            }
        };

        if (last != null) {
            last.addListener(listener);
            ctx.flush();
        }
    } else {
        if (exception != null) {
            promise.tryFailure(exception);
        } else {
            promise.trySuccess();
        }
    }
}