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package org.mule.providers.http; |
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import org.mule.impl.MuleMessage; |
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import org.mule.impl.message.ExceptionPayload; |
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import org.mule.providers.AbstractMessageDispatcher; |
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import org.mule.providers.http.i18n.HttpMessages; |
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import org.mule.providers.http.transformers.HttpClientMethodResponseToObject; |
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import org.mule.providers.http.transformers.ObjectToHttpClientMethodRequest; |
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import org.mule.providers.streaming.StreamMessageAdapter; |
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import org.mule.umo.UMOEvent; |
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import org.mule.umo.UMOMessage; |
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import org.mule.umo.endpoint.UMOImmutableEndpoint; |
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import org.mule.umo.provider.DispatchException; |
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import org.mule.umo.provider.ReceiveException; |
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import org.mule.umo.provider.UMOMessageAdapter; |
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import org.mule.umo.provider.UMOStreamMessageAdapter; |
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import org.mule.umo.transformer.TransformerException; |
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import org.mule.umo.transformer.UMOTransformer; |
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import org.mule.util.StringUtils; |
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|
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import java.io.IOException; |
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import java.io.OutputStream; |
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import java.net.URI; |
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import java.net.URISyntaxException; |
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import java.util.Iterator; |
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import java.util.Map; |
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import java.util.Properties; |
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|
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import org.apache.commons.codec.binary.Base64; |
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import org.apache.commons.httpclient.Cookie; |
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import org.apache.commons.httpclient.Header; |
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import org.apache.commons.httpclient.HostConfiguration; |
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import org.apache.commons.httpclient.HttpClient; |
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import org.apache.commons.httpclient.HttpMethod; |
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import org.apache.commons.httpclient.HttpState; |
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import org.apache.commons.httpclient.HttpStatus; |
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import org.apache.commons.httpclient.UsernamePasswordCredentials; |
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import org.apache.commons.httpclient.auth.AuthScope; |
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import org.apache.commons.httpclient.methods.ByteArrayRequestEntity; |
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import org.apache.commons.httpclient.methods.GetMethod; |
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import org.apache.commons.httpclient.methods.PostMethod; |
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import org.apache.commons.httpclient.methods.RequestEntity; |
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import org.apache.commons.httpclient.params.HttpMethodParams; |
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import org.apache.commons.httpclient.protocol.Protocol; |
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import org.apache.commons.io.IOUtils; |
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|
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public class HttpClientMessageDispatcher extends AbstractMessageDispatcher |
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{ |
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private final HttpConnector connector; |
63 | 0 | private volatile HttpClient client = null; |
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private final UMOTransformer receiveTransformer; |
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|
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public HttpClientMessageDispatcher(UMOImmutableEndpoint endpoint) |
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{ |
68 | 0 | super(endpoint); |
69 | 0 | this.connector = (HttpConnector) endpoint.getConnector(); |
70 | 0 | this.receiveTransformer = new HttpClientMethodResponseToObject(); |
71 | 0 | } |
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|
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protected void doConnect() throws Exception |
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{ |
75 | 0 | if (client == null) |
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{ |
77 | 0 | HttpState state = new HttpState(); |
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|
79 | 0 | if (connector.getProxyUsername() != null) |
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{ |
81 | 0 | state.setProxyCredentials(new AuthScope(null, -1, null, null), |
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new UsernamePasswordCredentials(connector.getProxyUsername(), |
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connector.getProxyPassword())); |
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} |
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|
86 | 0 | client = new HttpClient(); |
87 | 0 | client.setState(state); |
88 | 0 | client.setHttpConnectionManager(connector.getClientConnectionManager()); |
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} |
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|
104 | 0 | } |
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|
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protected void doDisconnect() throws Exception |
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{ |
108 | 0 | client = null; |
109 | 0 | } |
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|
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protected void doDispatch(UMOEvent event) throws Exception |
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{ |
113 | 0 | HttpMethod httpMethod = getMethod(event); |
114 | 0 | execute(event, httpMethod, true); |
115 | 0 | if (httpMethod.getStatusCode() >= 400) |
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{ |
117 | 0 | logger.error(httpMethod.getResponseBodyAsString()); |
118 | 0 | throw new DispatchException(event.getMessage(), event.getEndpoint(), new Exception( |
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"Http call returned a status of: " + httpMethod.getStatusCode() + " " |
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+ httpMethod.getStatusText())); |
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} |
122 | 0 | } |
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protected UMOMessage doReceive(long timeout) throws Exception |
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{ |
137 | 0 | HttpMethod httpMethod = new GetMethod(endpoint.getEndpointURI().getAddress()); |
138 | 0 | httpMethod.setDoAuthentication(true); |
139 | 0 | if (endpoint.getEndpointURI().getUserInfo() != null |
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&& endpoint.getProperty(HttpConstants.HEADER_AUTHORIZATION) == null) |
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{ |
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|
143 | 0 | StringBuffer header = new StringBuffer(128); |
144 | 0 | header.append("Basic "); |
145 | 0 | header.append(new String(Base64.encodeBase64(endpoint.getEndpointURI().getUserInfo().getBytes( |
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endpoint.getEncoding())))); |
147 | 0 | httpMethod.addRequestHeader(HttpConstants.HEADER_AUTHORIZATION, header.toString()); |
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} |
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try |
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{ |
151 | 0 | HttpClient client = new HttpClient(); |
152 | 0 | client.executeMethod(httpMethod); |
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|
154 | 0 | if (httpMethod.getStatusCode() == HttpStatus.SC_OK) |
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{ |
156 | 0 | return (UMOMessage) receiveTransformer.transform(httpMethod); |
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} |
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else |
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{ |
160 | 0 | throw new ReceiveException( |
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HttpMessages.requestFailedWithStatus(httpMethod.getStatusLine().toString()), |
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endpoint, timeout); |
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} |
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} |
165 | 0 | catch (ReceiveException e) |
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{ |
167 | 0 | throw e; |
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} |
169 | 0 | catch (Exception e) |
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{ |
171 | 0 | throw new ReceiveException(endpoint, timeout, e); |
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} |
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finally |
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{ |
175 | 0 | httpMethod.releaseConnection(); |
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} |
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} |
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|
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protected HttpMethod execute(UMOEvent event, HttpMethod httpMethod, boolean closeConnection) |
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throws Exception |
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{ |
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|
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try |
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{ |
185 | 0 | URI uri = event.getEndpoint().getEndpointURI().getUri(); |
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|
187 | 0 | this.processCookies(event); |
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|
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|
190 | 0 | client.executeMethod(getHostConfig(uri), httpMethod); |
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|
192 | 0 | return httpMethod; |
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} |
194 | 0 | catch (IOException e) |
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{ |
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|
197 | 0 | throw new DispatchException(event.getMessage(), event.getEndpoint(), e); |
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} |
199 | 0 | catch (Exception e) |
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{ |
201 | 0 | throw new DispatchException(event.getMessage(), event.getEndpoint(), e); |
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} |
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finally |
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{ |
205 | 0 | if (httpMethod != null && closeConnection) |
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{ |
207 | 0 | httpMethod.releaseConnection(); |
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} |
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} |
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} |
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|
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protected void processCookies(UMOEvent event) |
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{ |
214 | 0 | UMOMessage msg = event.getMessage(); |
215 | 0 | Cookie[] cookies = (Cookie[]) msg.removeProperty(HttpConnector.HTTP_COOKIES_PROPERTY); |
216 | 0 | if (cookies != null && cookies.length > 0) |
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{ |
218 | 0 | String policy = (String) msg.removeProperty(HttpConnector.HTTP_COOKIE_SPEC_PROPERTY); |
219 | 0 | client.getParams().setCookiePolicy(CookieHelper.getCookiePolicy(policy)); |
220 | 0 | client.getState().addCookies(cookies); |
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} |
222 | 0 | } |
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|
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protected HttpMethod getMethod(UMOEvent event) throws TransformerException |
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{ |
226 | 0 | UMOMessage msg = event.getMessage(); |
227 | 0 | String method = msg.getStringProperty(HttpConnector.HTTP_METHOD_PROPERTY, HttpConstants.METHOD_POST); |
228 | 0 | URI uri = event.getEndpoint().getEndpointURI().getUri(); |
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HttpMethod httpMethod; |
230 | 0 | Object body = event.getTransformedMessage(); |
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|
232 | 0 | if (body instanceof HttpMethod) |
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{ |
234 | 0 | httpMethod = (HttpMethod)body; |
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} |
236 | 0 | else if (HttpConstants.METHOD_GET.equalsIgnoreCase(method)) |
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{ |
238 | 0 | httpMethod = new GetMethod(uri.toString()); |
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} |
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else |
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{ |
242 | 0 | PostMethod postMethod = new PostMethod(uri.toString()); |
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|
244 | 0 | if (body instanceof String) |
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{ |
246 | 0 | ObjectToHttpClientMethodRequest trans = new ObjectToHttpClientMethodRequest(); |
247 | 0 | httpMethod = (HttpMethod)trans.transform(body.toString()); |
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} |
249 | 0 | else if (body instanceof UMOStreamMessageAdapter) |
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{ |
251 | 0 | UMOStreamMessageAdapter sma = (UMOStreamMessageAdapter)body; |
252 | 0 | Map headers = sma.getOutputHandler().getHeaders(event); |
253 | 0 | for (Iterator iterator = headers.entrySet().iterator(); iterator.hasNext();) |
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{ |
255 | 0 | Map.Entry entry = (Map.Entry)iterator.next(); |
256 | 0 | postMethod.addRequestHeader((String)entry.getKey(), (String)entry.getValue()); |
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} |
258 | 0 | postMethod.setRequestEntity(new StreamPayloadRequestEntity((StreamMessageAdapter)body, event)); |
259 | 0 | postMethod.setContentChunked(true); |
260 | 0 | httpMethod = postMethod; |
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} |
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else |
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{ |
264 | 0 | byte[] buffer = event.getTransformedMessageAsBytes(); |
265 | 0 | postMethod.setRequestEntity(new ByteArrayRequestEntity(buffer, event.getEncoding())); |
266 | 0 | httpMethod = postMethod; |
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} |
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|
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} |
270 | 0 | httpMethod.setDoAuthentication(true); |
271 | 0 | if (event.getCredentials() != null) |
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{ |
273 | 0 | String authScopeHost = msg.getStringProperty("http.auth.scope.host", null); |
274 | 0 | int authScopePort = msg.getIntProperty("http.auth.scope.port", -1); |
275 | 0 | String authScopeRealm = msg.getStringProperty("http.auth.scope.realm", null); |
276 | 0 | String authScopeScheme = msg.getStringProperty("http.auth.scope.scheme", null); |
277 | 0 | client.getState().setCredentials( |
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new AuthScope(authScopeHost, authScopePort, authScopeRealm, authScopeScheme), |
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new UsernamePasswordCredentials(event.getCredentials().getUsername(), new String( |
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event.getCredentials().getPassword()))); |
281 | 0 | client.getParams().setAuthenticationPreemptive(true); |
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} |
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else |
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{ |
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|
286 | 0 | client.getParams().setAuthenticationPreemptive(false); |
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} |
288 | 0 | return httpMethod; |
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} |
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protected UMOMessage doSend(UMOEvent event) throws Exception |
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{ |
298 | 0 | HttpMethod httpMethod = getMethod(event); |
299 | 0 | httpMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new MuleHttpMethodRetryHandler()); |
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|
301 | 0 | httpMethod = execute(event, httpMethod, false); |
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|
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try |
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{ |
305 | 0 | Properties h = new Properties(); |
306 | 0 | Header[] headers = httpMethod.getResponseHeaders(); |
307 | 0 | for (int i = 0; i < headers.length; i++) |
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{ |
309 | 0 | h.setProperty(headers[i].getName(), headers[i].getValue()); |
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} |
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|
312 | 0 | String status = String.valueOf(httpMethod.getStatusCode()); |
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|
314 | 0 | h.setProperty(HttpConnector.HTTP_STATUS_PROPERTY, status); |
315 | 0 | if (logger.isDebugEnabled()) |
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{ |
317 | 0 | logger.debug("Http response is: " + status); |
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} |
319 | 0 | ExceptionPayload ep = null; |
320 | 0 | if (httpMethod.getStatusCode() >= 400) |
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{ |
322 | 0 | ep = new ExceptionPayload(new DispatchException(event.getMessage(), event.getEndpoint(), |
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new Exception("Http call returned a status of: " + httpMethod.getStatusCode() + " " |
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+ httpMethod.getStatusText()))); |
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} |
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UMOMessage m; |
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|
328 | 0 | Header header = httpMethod.getResponseHeader(HttpConstants.HEADER_CONTENT_TYPE); |
329 | 0 | if ((header != null) && event.isStreaming()) |
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{ |
331 | 0 | HttpStreamMessageAdapter sp = (HttpStreamMessageAdapter)connector.getStreamMessageAdapter( |
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httpMethod.getResponseBodyAsStream(), null); |
333 | 0 | sp.setHttpMethod(httpMethod); |
334 | 0 | m = new MuleMessage(sp, h); |
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} |
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else |
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{ |
338 | 0 | Object body = IOUtils.toByteArray(httpMethod.getResponseBodyAsStream()); |
339 | 0 | if (body == null) |
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{ |
341 | 0 | body = StringUtils.EMPTY; |
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} |
343 | 0 | UMOMessageAdapter adapter = connector.getMessageAdapter(new Object[]{body, h}); |
344 | 0 | m = new MuleMessage(adapter); |
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} |
346 | 0 | m.setExceptionPayload(ep); |
347 | 0 | return m; |
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} |
349 | 0 | catch (Exception e) |
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{ |
351 | 0 | throw new DispatchException(event.getMessage(), event.getEndpoint(), e); |
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} |
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finally |
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{ |
355 | 0 | if (httpMethod != null && !event.isStreaming()) |
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{ |
357 | 0 | httpMethod.releaseConnection(); |
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} |
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} |
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} |
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|
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protected HostConfiguration getHostConfig(URI uri) throws URISyntaxException |
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{ |
364 | 0 | Protocol protocol = Protocol.getProtocol(uri.getScheme().toLowerCase()); |
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|
366 | 0 | String host = uri.getHost(); |
367 | 0 | int port = uri.getPort(); |
368 | 0 | HostConfiguration config = new HostConfiguration(); |
369 | 0 | config.setHost(host, port, protocol); |
370 | 0 | if (StringUtils.isNotBlank(connector.getProxyHostname())) |
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{ |
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|
373 | 0 | config.setProxy(connector.getProxyHostname(), connector.getProxyPort()); |
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} |
375 | 0 | return config; |
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} |
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|
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protected void doDispose() |
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{ |
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|
381 | 0 | } |
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|
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private class StreamPayloadRequestEntity implements RequestEntity |
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{ |
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private UMOStreamMessageAdapter messageAdapter; |
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private UMOEvent event; |
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|
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public StreamPayloadRequestEntity(UMOStreamMessageAdapter messageAdapter, UMOEvent event) |
389 | 0 | { |
390 | 0 | this.messageAdapter = messageAdapter; |
391 | 0 | this.event = event; |
392 | 0 | } |
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|
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public boolean isRepeatable() |
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{ |
396 | 0 | return true; |
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} |
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|
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public void writeRequest(OutputStream outputStream) throws IOException |
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{ |
401 | 0 | messageAdapter.getOutputHandler().write(event, outputStream); |
402 | 0 | } |
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|
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public long getContentLength() |
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{ |
406 | 0 | return -1L; |
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} |
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|
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public String getContentType() |
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{ |
411 | 0 | return event.getMessage().getStringProperty(HttpConstants.HEADER_CONTENT_TYPE, null); |
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} |
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} |
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|
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} |