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The Async Http Client (AHC) classes.

There is a newer version: 3.0.0

/*
 * Copyright (c) 2015 AsyncHttpClient Project. All rights reserved.
 *
 * This program is licensed to you under the Apache License Version 2.0,
 * and you may not use this file except in compliance with the Apache License Version 2.0.
 * You may obtain a copy of the Apache License Version 2.0 at
 *     http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the Apache License Version 2.0 is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Apache License Version 2.0 for the specific language governing permissions and limitations there under.
 */
package org.asynchttpclient.request.body.generator;

import java.nio.ByteBuffer;
import java.util.Queue;

import org.asynchttpclient.request.body.Body;

public abstract class QueueBasedFeedableBodyGenerator> implements FeedableBodyGenerator {

    protected final T queue;
    private FeedListener listener;

    public QueueBasedFeedableBodyGenerator(T queue) {
        this.queue = queue;
    }

    @Override
    public Body createBody() {
        return new PushBody(queue);
    }

    protected abstract boolean offer(BodyChunk chunk) throws Exception;

    @Override
    public boolean feed(final ByteBuffer buffer, final boolean isLast) throws Exception {
        boolean offered = offer(new BodyChunk(buffer, isLast));
        if (offered && listener != null) {
            listener.onContentAdded();
        }
        return offered;
    }

    @Override
    public void setListener(FeedListener listener) {
        this.listener = listener;
    }
}