Example usage for io.netty.channel ChannelProgressivePromise addListener

Introduction

In this page you can find the example usage for io.netty.channel ChannelProgressivePromise addListener.

Prototype

@Override
    ChannelProgressivePromise addListener(GenericFutureListener<? extends Future<? super Void>> listener);

Source Link

Usage

From source file:com.addthis.hydra.data.query.op.OpGroupBy.java

License:Apache License

public OpGroupBy(QueryOpProcessor processor, String args, ChannelProgressivePromise opPromise) {
    super(opPromise);
    this.memTotal = 0;
    this.processor = processor;
    this.memTip = processor.memTip();
    this.rowTip = processor.rowTip();
    if (!args.contains(":")) {
        throw new IllegalStateException("groupby query argument missing ':'");
    }//from   w w  w.j a v  a2s  .  c om
    String[] components = args.split(":", 2);
    this.mergeConfig = new MergeConfig(components[0]);
    this.queryDeclaration = components[1];
    this.forwardingOp = new OpForward(opPromise, getNext());
    // ops don't usually fail promises themselves, so this logic is unlikely to activate, but might as well
    this.errorForwarder = channelFuture -> {
        if (!channelFuture.isSuccess()) {
            opPromise.tryFailure(channelFuture.cause());
        }
    };
    opPromise.addListener(channelFuture -> {
        if (channelFuture.isSuccess()) {
            for (QueryOp queryOp : resultTable.values()) {
                queryOp.getOpPromise().trySuccess();
            }
        } else {
            Throwable failureCause = channelFuture.cause();
            for (QueryOp queryOp : resultTable.values()) {
                queryOp.getOpPromise().tryFailure(failureCause);
            }
        }
    });
}

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From source file:com.addthis.hydra.data.query.op.OpGroupBy.java

License:Apache License

/**
 * Generate new promise for the child operation.
 *
 * @param opPromise promise of the 'groupby' query operation
 *
 * @return generated promise//from  w w  w. j a  v a 2 s.  c  o  m
 */
private ChannelProgressivePromise generateNewPromise(ChannelProgressivePromise opPromise) {
    final ChannelProgressivePromise result;
    if (opPromise.channel() == null) {
        result = new DefaultChannelProgressivePromise(null, ImmediateEventExecutor.INSTANCE);
    } else {
        result = opPromise.channel().newProgressivePromise();
    }
    result.addListener(errorForwarder);
    return result;
}

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