juneau-rest/juneau-rest-server/src/main/java/org/apache/juneau/rest/processor/InputStreamProcessor.java

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package org.apache.juneau.rest.processor;

import static org.apache.juneau.common.internal.IOUtils.*;

import java.io.*;

import org.apache.juneau.rest.*;

/**
 * Response processor for {@link InputStream} objects.
 *
 * <p>
 * Simply pipes the contents of the {@link InputStream} to {@link RestResponse#getNegotiatedOutputStream()}.
 *
 * <h5 class='section'>See Also:</h5><ul>
 * 	<li class='link'><a class="doclink" href="../../../../../index.html#jrs.ResponseProcessors">Response Processors</a>
 * </ul>
 */
public final class InputStreamProcessor implements ResponseProcessor {

	@Override /* ResponseProcessor */
	public int process(RestOpSession opSession) throws IOException {

		RestResponse res = opSession.getResponse();
		InputStream is = res.getContent(InputStream.class);

		if (is == null)
			return NEXT;

		try (InputStream is2 = is; OutputStream os = res.getNegotiatedOutputStream()) {
			pipe(is2, os);
		}

		return FINISHED;
	}
}