com.hp.autonomy.idolutils.processors.CopyResponseProcessor Maven / Gradle / Ivy

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/*
 * Copyright 2015 Hewlett-Packard Development Company, L.P.
 * Licensed under the MIT License (the "License"); you may not use this file except in compliance with the License.
 */

package com.hp.autonomy.idolutils.processors;

import com.autonomy.aci.client.services.Processor;
import com.autonomy.aci.client.services.ProcessorException;
import com.autonomy.aci.client.transport.AciResponseInputStream;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.commons.io.IOUtils;

/**
 * Processor which copies the entire response stream into the given {@link OutputStream} before flushing the output stream.
 */
@SuppressWarnings("WeakerAccess")
public class CopyResponseProcessor implements Processor {

    private static final long serialVersionUID = 8869650394998971739L;

    private final transient OutputStream outputStream;

    /**
     * Creates a new CopyResponseProcessor which writes to the given OutputStream.
     * @param outputStream The OutputStream to write to
     */
    public CopyResponseProcessor(final OutputStream outputStream) {
        this.outputStream = outputStream;
    }

    /**
     * Copies the given AciResponseInputStream into the OutputStream.
     * @param aciResponse The AciResponseInputStream to read
     * @return true If the method completes successfully
     * @throws ProcessorException If an IOException is thrown internally.
     */
    @Override
    public Boolean process(final AciResponseInputStream aciResponse) {
        try {
            IOUtils.copy(aciResponse, outputStream);

            outputStream.flush();

            return true;
        }
        catch(final IOException e) {
            throw new ProcessorException(e);
        }
    }
}