1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
package org.mule.transport.http; |
12 | |
|
13 | |
import org.mule.DefaultMuleMessage; |
14 | |
import org.mule.api.MuleEvent; |
15 | |
import org.mule.api.MuleMessage; |
16 | |
import org.mule.api.endpoint.OutboundEndpoint; |
17 | |
import org.mule.api.transformer.Transformer; |
18 | |
import org.mule.api.transformer.TransformerException; |
19 | |
import org.mule.api.transport.DispatchException; |
20 | |
import org.mule.api.transport.OutputHandler; |
21 | |
import org.mule.message.DefaultExceptionPayload; |
22 | |
import org.mule.transport.AbstractMessageDispatcher; |
23 | |
import org.mule.transport.http.transformers.ObjectToHttpClientMethodRequest; |
24 | |
import org.mule.util.StringUtils; |
25 | |
|
26 | |
import java.io.IOException; |
27 | |
import java.io.InputStream; |
28 | |
import java.net.URI; |
29 | |
import java.net.URISyntaxException; |
30 | |
import java.util.Iterator; |
31 | |
import java.util.Map; |
32 | |
|
33 | |
import org.apache.commons.httpclient.Cookie; |
34 | |
import org.apache.commons.httpclient.Header; |
35 | |
import org.apache.commons.httpclient.HostConfiguration; |
36 | |
import org.apache.commons.httpclient.HttpClient; |
37 | |
import org.apache.commons.httpclient.HttpMethod; |
38 | |
import org.apache.commons.httpclient.cookie.CookiePolicy; |
39 | |
import org.apache.commons.httpclient.methods.ByteArrayRequestEntity; |
40 | |
import org.apache.commons.httpclient.methods.EntityEnclosingMethod; |
41 | |
import org.apache.commons.httpclient.params.HttpMethodParams; |
42 | |
import org.apache.commons.httpclient.protocol.Protocol; |
43 | |
|
44 | |
|
45 | |
|
46 | |
|
47 | |
public class HttpClientMessageDispatcher extends AbstractMessageDispatcher |
48 | |
{ |
49 | |
|
50 | |
|
51 | |
|
52 | |
public static final int ERROR_STATUS_CODE_RANGE_START = 400; |
53 | |
private final HttpConnector connector; |
54 | 64 | private volatile HttpClient client = null; |
55 | |
private final Transformer sendTransformer; |
56 | |
|
57 | |
public HttpClientMessageDispatcher(OutboundEndpoint endpoint) |
58 | |
{ |
59 | 64 | super(endpoint); |
60 | 64 | this.connector = (HttpConnector) endpoint.getConnector(); |
61 | 64 | this.sendTransformer = new ObjectToHttpClientMethodRequest(); |
62 | 64 | } |
63 | |
|
64 | |
protected void doConnect() throws Exception |
65 | |
{ |
66 | 64 | if (client == null) |
67 | |
{ |
68 | 64 | client = connector.doClientConnect(); |
69 | |
} |
70 | 64 | } |
71 | |
|
72 | |
protected void doDisconnect() throws Exception |
73 | |
{ |
74 | 64 | client = null; |
75 | 64 | } |
76 | |
|
77 | |
protected void doDispatch(MuleEvent event) throws Exception |
78 | |
{ |
79 | 0 | HttpMethod httpMethod = getMethod(event); |
80 | |
try |
81 | |
{ |
82 | 0 | execute(event, httpMethod); |
83 | |
|
84 | 0 | if (httpMethod.getStatusCode() >= ERROR_STATUS_CODE_RANGE_START) |
85 | |
{ |
86 | 0 | logger.error(httpMethod.getResponseBodyAsString()); |
87 | 0 | throw new DispatchException(event.getMessage(), event.getEndpoint(), new Exception( |
88 | |
"Http call returned a status of: " + httpMethod.getStatusCode() + " " |
89 | |
+ httpMethod.getStatusText())); |
90 | |
} |
91 | |
} |
92 | |
finally |
93 | |
{ |
94 | 0 | httpMethod.releaseConnection(); |
95 | 0 | } |
96 | 0 | } |
97 | |
|
98 | |
protected HttpMethod execute(MuleEvent event, HttpMethod httpMethod) |
99 | |
throws Exception |
100 | |
{ |
101 | |
|
102 | |
try |
103 | |
{ |
104 | 140 | URI uri = event.getEndpoint().getEndpointURI().getUri(); |
105 | |
|
106 | 140 | this.processCookies(event); |
107 | |
|
108 | |
|
109 | 140 | client.executeMethod(getHostConfig(uri), httpMethod); |
110 | |
|
111 | 140 | return httpMethod; |
112 | |
} |
113 | 0 | catch (IOException e) |
114 | |
{ |
115 | |
|
116 | 0 | throw new DispatchException(event.getMessage(), event.getEndpoint(), e); |
117 | |
} |
118 | 0 | catch (Exception e) |
119 | |
{ |
120 | 0 | throw new DispatchException(event.getMessage(), event.getEndpoint(), e); |
121 | |
} |
122 | |
|
123 | |
} |
124 | |
|
125 | |
protected void processCookies(MuleEvent event) |
126 | |
{ |
127 | 140 | MuleMessage msg = event.getMessage(); |
128 | 140 | Object cookieObject = msg.removeProperty(HttpConnector.HTTP_COOKIES_PROPERTY); |
129 | 140 | if (cookieObject instanceof Cookie[]) |
130 | |
{ |
131 | |
|
132 | 0 | Cookie[] cookies = (Cookie[]) cookieObject; |
133 | 0 | if (cookies != null && cookies.length > 0) |
134 | |
{ |
135 | 0 | String policy = (String) msg.removeProperty(HttpConnector.HTTP_COOKIE_SPEC_PROPERTY); |
136 | 0 | client.getParams().setCookiePolicy(CookieHelper.getCookiePolicy(policy)); |
137 | 0 | client.getState().addCookies(cookies); |
138 | |
} |
139 | 0 | } |
140 | 140 | else if (cookieObject instanceof Map) |
141 | |
{ |
142 | |
|
143 | 2 | client.getParams().setCookiePolicy(CookiePolicy.RFC_2109); |
144 | |
|
145 | 2 | String host = this.getEndpoint().getEndpointURI().getHost(); |
146 | 2 | String path = this.getEndpoint().getEndpointURI().getPath(); |
147 | 2 | Map cookieMap = (Map) cookieObject; |
148 | 2 | Iterator keyIter = cookieMap.keySet().iterator(); |
149 | 4 | while (keyIter.hasNext()) |
150 | |
{ |
151 | 2 | String key = (String) keyIter.next(); |
152 | 2 | String value = (String) cookieMap.get(key); |
153 | 2 | Cookie cookie = new Cookie(host, key, value, path, null, false); |
154 | 2 | client.getState().addCookie(cookie); |
155 | 2 | } |
156 | 2 | } |
157 | 138 | else if (cookieObject != null) |
158 | |
{ |
159 | 0 | throw new IllegalArgumentException("Invalid cookies " + cookieObject); |
160 | |
} |
161 | 140 | } |
162 | |
|
163 | |
protected HttpMethod getMethod(MuleEvent event) throws TransformerException |
164 | |
{ |
165 | 142 | MuleMessage msg = event.getMessage(); |
166 | 142 | setPropertyFromEndpoint(event, msg, HttpConnector.HTTP_CUSTOM_HEADERS_MAP_PROPERTY); |
167 | |
|
168 | |
HttpMethod httpMethod; |
169 | 142 | Object body = event.transformMessage(); |
170 | |
|
171 | 140 | if (body instanceof HttpMethod) |
172 | |
{ |
173 | 126 | httpMethod = (HttpMethod)body; |
174 | |
} |
175 | |
else |
176 | |
{ |
177 | 14 | httpMethod = (HttpMethod) sendTransformer.transform(msg); |
178 | |
} |
179 | |
|
180 | |
|
181 | 140 | return httpMethod; |
182 | |
} |
183 | |
|
184 | |
protected void setPropertyFromEndpoint(MuleEvent event, MuleMessage msg, String prop) |
185 | |
{ |
186 | 142 | Object o = msg.getProperty(prop, null); |
187 | 142 | if (o == null) { |
188 | |
|
189 | 142 | o = event.getEndpoint().getProperty(prop); |
190 | 142 | if (o != null) { |
191 | 0 | msg.setProperty(prop, o); |
192 | |
} |
193 | |
} |
194 | 142 | } |
195 | |
|
196 | |
protected HttpMethod createEntityMethod(MuleEvent event, Object body, EntityEnclosingMethod postMethod) |
197 | |
throws TransformerException |
198 | |
{ |
199 | |
HttpMethod httpMethod; |
200 | 0 | if (body instanceof String) |
201 | |
{ |
202 | 0 | ObjectToHttpClientMethodRequest trans = new ObjectToHttpClientMethodRequest(); |
203 | 0 | httpMethod = (HttpMethod)trans.transform(body.toString()); |
204 | 0 | } |
205 | 0 | else if (body instanceof byte[]) |
206 | |
{ |
207 | 0 | byte[] buffer = event.transformMessageToBytes(); |
208 | 0 | postMethod.setRequestEntity(new ByteArrayRequestEntity(buffer, event.getEncoding())); |
209 | 0 | httpMethod = postMethod; |
210 | 0 | } |
211 | |
else |
212 | |
{ |
213 | 0 | if (!(body instanceof OutputHandler)) |
214 | |
{ |
215 | 0 | body = event.transformMessage(OutputHandler.class); |
216 | |
} |
217 | |
|
218 | 0 | OutputHandler outputHandler = (OutputHandler)body; |
219 | 0 | postMethod.setRequestEntity(new StreamPayloadRequestEntity(outputHandler, event)); |
220 | 0 | postMethod.setContentChunked(true); |
221 | 0 | httpMethod = postMethod; |
222 | |
} |
223 | |
|
224 | 0 | return httpMethod; |
225 | |
} |
226 | |
|
227 | |
|
228 | |
|
229 | |
|
230 | |
|
231 | |
|
232 | |
protected MuleMessage doSend(MuleEvent event) throws Exception |
233 | |
{ |
234 | 142 | HttpMethod httpMethod = getMethod(event); |
235 | 140 | connector.setupClientAuthorization(event, httpMethod, client, endpoint); |
236 | |
|
237 | 140 | httpMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new MuleHttpMethodRetryHandler()); |
238 | |
|
239 | 140 | Object body = null; |
240 | 140 | boolean releaseConn = false; |
241 | |
try |
242 | |
{ |
243 | 140 | httpMethod = execute(event, httpMethod); |
244 | |
|
245 | 140 | DefaultExceptionPayload ep = null; |
246 | 140 | if (httpMethod.getStatusCode() >= ERROR_STATUS_CODE_RANGE_START) |
247 | |
{ |
248 | 6 | ep = new DefaultExceptionPayload(new DispatchException(event.getMessage(), event.getEndpoint(), |
249 | |
new Exception("Http call returned a status of: " + httpMethod.getStatusCode() + " " |
250 | |
+ httpMethod.getStatusText()))); |
251 | |
} |
252 | |
|
253 | |
|
254 | 140 | InputStream is = httpMethod.getResponseBodyAsStream(); |
255 | 140 | if (is == null) |
256 | |
{ |
257 | 0 | body = StringUtils.EMPTY; |
258 | 0 | releaseConn = true; |
259 | |
} |
260 | |
else |
261 | |
{ |
262 | 140 | is = new ReleasingInputStream(is, httpMethod); |
263 | 140 | body = is; |
264 | |
} |
265 | |
|
266 | 140 | Header[] headers = httpMethod.getResponseHeaders(); |
267 | 140 | HttpMessageAdapter adapter = new HttpMessageAdapter(new Object[]{body, headers}); |
268 | |
|
269 | 140 | String status = String.valueOf(httpMethod.getStatusCode()); |
270 | |
|
271 | 140 | adapter.setProperty(HttpConnector.HTTP_STATUS_PROPERTY, status); |
272 | 140 | if (logger.isDebugEnabled()) |
273 | |
{ |
274 | 0 | logger.debug("Http response is: " + status); |
275 | |
} |
276 | |
|
277 | 140 | MuleMessage m = new DefaultMuleMessage(adapter); |
278 | |
|
279 | 140 | m.setExceptionPayload(ep); |
280 | 140 | return m; |
281 | |
} |
282 | 0 | catch (Exception e) |
283 | |
{ |
284 | 0 | releaseConn = true; |
285 | 0 | if (e instanceof DispatchException) |
286 | |
{ |
287 | 0 | throw (DispatchException) e; |
288 | |
} |
289 | |
|
290 | 0 | throw new DispatchException(event.getMessage(), event.getEndpoint(), e); |
291 | |
} |
292 | |
finally |
293 | |
{ |
294 | 140 | if (releaseConn) |
295 | |
{ |
296 | 0 | httpMethod.releaseConnection(); |
297 | |
} |
298 | |
} |
299 | |
} |
300 | |
|
301 | |
protected HostConfiguration getHostConfig(URI uri) throws URISyntaxException |
302 | |
{ |
303 | 140 | Protocol protocol = Protocol.getProtocol(uri.getScheme().toLowerCase()); |
304 | |
|
305 | 140 | String host = uri.getHost(); |
306 | 140 | int port = uri.getPort(); |
307 | 140 | HostConfiguration config = new HostConfiguration(); |
308 | 140 | config.setHost(host, port, protocol); |
309 | 140 | if (StringUtils.isNotBlank(connector.getProxyHostname())) |
310 | |
{ |
311 | |
|
312 | 0 | config.setProxy(connector.getProxyHostname(), connector.getProxyPort()); |
313 | |
} |
314 | 140 | return config; |
315 | |
} |
316 | |
|
317 | |
protected void doDispose() |
318 | |
{ |
319 | |
|
320 | 64 | } |
321 | |
} |