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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2017 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in org.testifyproject.testifyprojectpliance with the License.  You can
 * obtain a copy of the License at
 * https://oss.oracle.org.testifyproject.testifyproject/licenses/CDDL+GPL-1.1
 * or LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
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 */

package org.testifyproject.glassfish.org.testifyproject.message.internal;

import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.StreamingOutput;
import javax.ws.rs.ext.MessageBodyWriter;

import javax.inject.Singleton;

/**
 * Message body writer that supports {@link StreamingOutput streaming output} marshalling.
 *
 * @author Paul Sandoz
 */
@Produces({"application/octet-stream", "*/*"})
@Singleton
public final class StreamingOutputProvider implements MessageBodyWriter {

    @Override
    public boolean isWriteable(Class t, Type gt, Annotation[] as, MediaType mediaType) {
        return StreamingOutput.class.isAssignableFrom(t);
    }

    @Override
    public long getSize(StreamingOutput o, Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return -1;
    }

    @Override
    public void writeTo(StreamingOutput o, Class t, Type gt, Annotation[] as,
            MediaType mediaType, MultivaluedMap httpHeaders,
            OutputStream entity) throws IOException {
        o.write(entity);
    }
}