org.apache.spark.network.ExtendedChannelPromise.java Source code

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Here is the source code for org.apache.spark.network.ExtendedChannelPromise.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.spark.network;

import java.util.ArrayList;
import java.util.List;

import io.netty.channel.Channel;
import io.netty.channel.ChannelPromise;
import io.netty.channel.DefaultChannelPromise;
import io.netty.util.concurrent.Future;
import io.netty.util.concurrent.GenericFutureListener;

class ExtendedChannelPromise extends DefaultChannelPromise {

    private List<GenericFutureListener<Future<Void>>> listeners = new ArrayList<>();
    private boolean success;

    ExtendedChannelPromise(Channel channel) {
        super(channel);
        success = false;
    }

    @Override
    public ChannelPromise addListener(GenericFutureListener<? extends Future<? super Void>> listener) {
        @SuppressWarnings("unchecked")
        GenericFutureListener<Future<Void>> gfListener = (GenericFutureListener<Future<Void>>) listener;
        listeners.add(gfListener);
        return super.addListener(listener);
    }

    @Override
    public boolean isSuccess() {
        return success;
    }

    @Override
    public ChannelPromise await() throws InterruptedException {
        return this;
    }

    public void finish(boolean success) {
        this.success = success;
        listeners.forEach(listener -> {
            try {
                listener.operationComplete(this);
            } catch (Exception e) {
                // do nothing
            }
        });
    }
}