001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.camel.component.http;
018
019 import java.io.InputStream;
020
021 import org.apache.camel.Exchange;
022 import org.apache.camel.Message;
023 import org.apache.camel.Producer;
024 import org.apache.camel.impl.DefaultProducer;
025 import org.apache.commons.httpclient.Header;
026 import org.apache.commons.httpclient.HttpClient;
027 import org.apache.commons.httpclient.HttpMethod;
028 import org.apache.commons.httpclient.methods.ByteArrayRequestEntity;
029 import org.apache.commons.httpclient.methods.GetMethod;
030 import org.apache.commons.httpclient.methods.PostMethod;
031 import org.apache.commons.httpclient.methods.RequestEntity;
032
033 /**
034 * @version $Revision: 1.1 $
035 */
036 public class HttpProducer extends DefaultProducer<HttpExchange> implements Producer<HttpExchange> {
037 private HttpClient httpClient = new HttpClient();
038
039 public HttpProducer(HttpEndpoint endpoint) {
040 super(endpoint);
041 }
042
043 public void process(Exchange exchange) throws Exception {
044 HttpMethod method = createMethod(exchange);
045 int responseCode = httpClient.executeMethod(method);
046
047 // lets store the result in the output message.
048 InputStream in = method.getResponseBodyAsStream();
049 Message out = exchange.getOut(true);
050 out.setBody(in);
051
052 // lets set the headers
053 Header[] headers = method.getResponseHeaders();
054 for (Header header : headers) {
055 String name = header.getName();
056 String value = header.getValue();
057 out.setHeader(name, value);
058 }
059
060 out.setHeader("http.responseCode", responseCode);
061 }
062
063 protected HttpMethod createMethod(Exchange exchange) {
064 String uri = getEndpoint().getEndpointUri();
065 RequestEntity requestEntity = createRequestEntity(exchange);
066 if (requestEntity == null) {
067 return new GetMethod(uri);
068 }
069 // TODO we might be PUT? - have some better way to explicitly choose
070 // method
071 PostMethod method = new PostMethod(uri);
072 method.setRequestEntity(requestEntity);
073 return method;
074 }
075
076 protected RequestEntity createRequestEntity(Exchange exchange) {
077 Message in = exchange.getIn();
078 RequestEntity entity = in.getBody(RequestEntity.class);
079 if (entity == null) {
080 byte[] data = in.getBody(byte[].class);
081 String contentType = in.getHeader("Content-Type", String.class);
082 if (contentType != null) {
083 return new ByteArrayRequestEntity(data, contentType);
084 } else {
085 return new ByteArrayRequestEntity(data);
086 }
087 }
088 return entity;
089 }
090 }