001/*
002 * Copyright 2002-2013 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.remoting.caucho;
018
019import java.io.IOException;
020import java.io.InputStream;
021import java.io.OutputStream;
022
023import com.caucho.burlap.io.BurlapInput;
024import com.caucho.burlap.io.BurlapOutput;
025import com.caucho.burlap.server.BurlapSkeleton;
026
027import org.springframework.beans.factory.InitializingBean;
028import org.springframework.remoting.support.RemoteExporter;
029import org.springframework.util.Assert;
030
031/**
032 * General stream-based protocol exporter for a Burlap endpoint.
033 *
034 * <p>Burlap is a slim, XML-based RPC protocol.
035 * For information on Burlap, see the
036 * <a href="https://www.caucho.com/burlap">Burlap website</a>.
037 * This exporter requires Burlap 3.x.
038 *
039 * @author Juergen Hoeller
040 * @since 2.5.1
041 * @see #invoke(java.io.InputStream, java.io.OutputStream)
042 * @see BurlapServiceExporter
043 * @see SimpleBurlapServiceExporter
044 * @deprecated as of Spring 4.0, since Burlap hasn't evolved in years
045 * and is effectively retired (in contrast to its sibling Hessian)
046 */
047@Deprecated
048public class BurlapExporter extends RemoteExporter implements InitializingBean {
049
050        private BurlapSkeleton skeleton;
051
052
053        @Override
054        public void afterPropertiesSet() {
055                prepare();
056        }
057
058        /**
059         * Initialize this service exporter.
060         */
061        public void prepare() {
062                checkService();
063                checkServiceInterface();
064                this.skeleton = new BurlapSkeleton(getProxyForService(), getServiceInterface());
065        }
066
067
068        /**
069         * Perform an invocation on the exported object.
070         * @param inputStream the request stream
071         * @param outputStream the response stream
072         * @throws Throwable if invocation failed
073         */
074        public void invoke(InputStream inputStream, OutputStream outputStream) throws Throwable {
075                Assert.notNull(this.skeleton, "Burlap exporter has not been initialized");
076                ClassLoader originalClassLoader = overrideThreadContextClassLoader();
077                try {
078                        this.skeleton.invoke(new BurlapInput(inputStream), new BurlapOutput(outputStream));
079                }
080                finally {
081                        try {
082                                inputStream.close();
083                        }
084                        catch (IOException ex) {
085                                // ignore
086                        }
087                        try {
088                                outputStream.close();
089                        }
090                        catch (IOException ex) {
091                                // ignore
092                        }
093                        resetThreadContextClassLoader(originalClassLoader);
094                }
095        }
096
097}