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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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 */
package org.apache.hc.core5.http.nio.entity;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.List;

import org.apache.hc.core5.concurrent.FutureCallback;
import org.apache.hc.core5.http.EntityDetails;
import org.apache.hc.core5.http.Header;
import org.apache.hc.core5.http.HttpException;
import org.apache.hc.core5.http.nio.AsyncEntityConsumer;
import org.apache.hc.core5.http.nio.CapacityChannel;

/**
 * No-op {@link AsyncEntityConsumer} that discards all data from the data stream.
 *
 * @since 5.0
 *
 * @deprecated Use {@link DiscardingEntityConsumer}
 */
@Deprecated
public final class NoopEntityConsumer implements AsyncEntityConsumer {

    private volatile FutureCallback resultCallback;

    @Override
    public void streamStart(
            final EntityDetails entityDetails,
            final FutureCallback resultCallback) throws IOException, HttpException {
        this.resultCallback = resultCallback;
    }

    @Override
    public void updateCapacity(final CapacityChannel capacityChannel) throws IOException {
        capacityChannel.update(Integer.MAX_VALUE);
    }

    @Override
    public void consume(final ByteBuffer src) throws IOException {
    }

    @Override
    public void streamEnd(final List trailers) throws IOException {
        if (resultCallback != null) {
            resultCallback.completed(null);
        }
    }

    @Override
    public void failed(final Exception cause) {
        if (resultCallback != null) {
            resultCallback.failed(cause);
        }
    }

    @Override
    public Void getContent() {
        return null;
    }

    @Override
    public void releaseResources() {
    }

}