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package org.mule.module.client; |
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import org.mule.DefaultMuleEvent; |
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import org.mule.DefaultMuleMessage; |
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import org.mule.MessageExchangePattern; |
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import org.mule.RequestContext; |
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import org.mule.api.FutureMessageResult; |
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import org.mule.api.MuleContext; |
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import org.mule.api.MuleEvent; |
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import org.mule.api.MuleException; |
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import org.mule.api.MuleMessage; |
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import org.mule.api.MuleSession; |
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import org.mule.api.config.MuleProperties; |
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import org.mule.api.endpoint.EndpointBuilder; |
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import org.mule.api.endpoint.EndpointFactory; |
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import org.mule.api.endpoint.ImmutableEndpoint; |
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import org.mule.api.endpoint.OutboundEndpoint; |
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import org.mule.api.lifecycle.Disposable; |
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import org.mule.api.security.Credentials; |
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import org.mule.api.transformer.wire.WireFormat; |
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import org.mule.api.transport.DispatchException; |
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import org.mule.client.DefaultLocalMuleClient.MuleClientFlowConstruct; |
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import org.mule.module.client.i18n.ClientMessages; |
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import org.mule.module.client.remoting.RemoteDispatcherException; |
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import org.mule.module.client.remoting.ServerHandshake; |
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import org.mule.module.client.remoting.UnsupportedWireFormatException; |
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import org.mule.module.client.remoting.notification.RemoteDispatcherNotification; |
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import org.mule.security.MuleCredentials; |
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import org.mule.session.DefaultMuleSession; |
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import org.mule.transformer.TransformerUtils; |
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import org.mule.transport.NullPayload; |
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import org.mule.util.ClassUtils; |
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import org.mule.util.IOUtils; |
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import org.mule.util.SerializationUtils; |
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import java.io.ByteArrayInputStream; |
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import java.io.ByteArrayOutputStream; |
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import java.io.InputStream; |
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import java.util.Map; |
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import edu.emory.mathcs.backport.java.util.concurrent.Callable; |
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import edu.emory.mathcs.backport.java.util.concurrent.Executor; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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public class RemoteDispatcher implements Disposable |
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{ |
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|
65 | 0 | protected static final Log logger = LogFactory.getLog(RemoteDispatcher.class); |
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private OutboundEndpoint asyncServerEndpoint; |
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private OutboundEndpoint syncServerEndpoint; |
72 | 0 | private Credentials credentials = null; |
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private MuleContext muleContext; |
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private Executor asyncExecutor; |
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private WireFormat wireFormat; |
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protected RemoteDispatcher(String endpoint, Credentials credentials, MuleContext muleContext) throws MuleException |
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{ |
87 | 0 | this(endpoint, muleContext); |
88 | 0 | this.credentials = credentials; |
89 | 0 | } |
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protected RemoteDispatcher(String endpoint, MuleContext muleContext) throws MuleException |
92 | 0 | { |
93 | 0 | this.muleContext = muleContext; |
94 | 0 | EndpointFactory endpointFactory = muleContext.getEndpointFactory(); |
95 | 0 | asyncServerEndpoint = endpointFactory.getOutboundEndpoint(endpoint); |
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|
97 | 0 | EndpointBuilder endpointBuilder = endpointFactory.getEndpointBuilder(endpoint); |
98 | 0 | endpointBuilder.setExchangePattern(MessageExchangePattern.REQUEST_RESPONSE); |
99 | 0 | syncServerEndpoint = muleContext.getEndpointFactory().getOutboundEndpoint( |
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endpointBuilder); |
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|
102 | 0 | wireFormat = requestWireFormat(); |
103 | 0 | } |
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protected WireFormat requestWireFormat() throws MuleException |
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{ |
107 | 0 | MuleMessage msg = new DefaultMuleMessage(ServerHandshake.SERVER_HANDSHAKE_PROPERTY, muleContext); |
108 | 0 | MuleMessage result = null; |
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|
110 | 0 | MuleEvent resultEvent = syncServerEndpoint.process(new DefaultMuleEvent(msg, syncServerEndpoint, |
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new DefaultMuleSession(new MuleClientFlowConstruct(muleContext), muleContext))); |
112 | 0 | if (resultEvent != null) |
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{ |
114 | 0 | result = resultEvent.getMessage(); |
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} |
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|
117 | 0 | if(result==null) |
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{ |
119 | 0 | throw new RemoteDispatcherException(ClientMessages.failedToDispatchActionNoResponseFromServer("request wire format", 5000)); |
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} |
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ServerHandshake handshake; |
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try |
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{ |
125 | 0 | ByteArrayInputStream in = new ByteArrayInputStream(result.getPayloadAsBytes()); |
126 | 0 | handshake = (ServerHandshake) SerializationUtils.deserialize(in, muleContext); |
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} |
128 | 0 | catch (Exception e) |
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{ |
130 | 0 | throw new RemoteDispatcherException(ClientMessages.failedToDeserializeHandshakeFromServer(), e); |
131 | 0 | } |
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try |
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{ |
135 | 0 | WireFormat wf = (WireFormat)ClassUtils.instanciateClass(handshake.getWireFormatClass(), |
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ClassUtils.NO_ARGS, getClass()); |
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|
138 | 0 | wf.setMuleContext(muleContext); |
139 | 0 | return wf; |
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} |
141 | 0 | catch (Exception e) |
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{ |
143 | 0 | throw new UnsupportedWireFormatException(handshake.getWireFormatClass(), e); |
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} |
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} |
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protected void setExecutor(Executor e) |
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{ |
149 | 0 | this.asyncExecutor = e; |
150 | 0 | } |
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public void dispatchToRemoteComponent(String component, Object payload, Map messageProperties) |
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throws MuleException |
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{ |
167 | 0 | doToRemoteComponent(component, payload, messageProperties, false); |
168 | 0 | } |
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public MuleMessage sendToRemoteComponent(String component, Object payload, Map messageProperties) |
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throws MuleException |
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{ |
186 | 0 | return doToRemoteComponent(component, payload, messageProperties, true); |
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} |
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public FutureMessageResult sendAsyncToRemoteComponent(final String component, |
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String transformers, |
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final Object payload, |
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final Map messageProperties) throws MuleException |
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{ |
211 | 0 | Callable callable = new Callable() |
212 | 0 | { |
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public Object call() throws Exception |
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{ |
215 | 0 | return doToRemoteComponent(component, payload, messageProperties, true); |
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} |
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}; |
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|
219 | 0 | FutureMessageResult result = new FutureMessageResult(callable, muleContext); |
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|
221 | 0 | if (asyncExecutor != null) |
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{ |
223 | 0 | result.setExecutor(asyncExecutor); |
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} |
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|
226 | 0 | if (transformers != null) |
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{ |
228 | 0 | result.setTransformers(TransformerUtils.getTransformers(transformers, muleContext)); |
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} |
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|
231 | 0 | result.execute(); |
232 | 0 | return result; |
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} |
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public MuleMessage sendRemote(String endpoint, Object payload, Map messageProperties, int timeout) |
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throws MuleException |
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{ |
238 | 0 | return doToRemote(endpoint, payload, messageProperties, true, timeout); |
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} |
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public MuleMessage sendRemote(String endpoint, Object payload, Map messageProperties) throws MuleException |
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{ |
243 | 0 | return doToRemote(endpoint, payload, messageProperties, true, |
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muleContext.getConfiguration().getDefaultResponseTimeout()); |
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} |
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public void dispatchRemote(String endpoint, Object payload, Map messageProperties) throws MuleException |
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{ |
249 | 0 | doToRemote(endpoint, payload, messageProperties, false, -1); |
250 | 0 | } |
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public FutureMessageResult sendAsyncRemote(final String endpoint, |
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final Object payload, |
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final Map messageProperties) throws MuleException |
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{ |
256 | 0 | Callable callable = new Callable() |
257 | 0 | { |
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public Object call() throws Exception |
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{ |
260 | 0 | return doToRemote(endpoint, payload, messageProperties, true, -1); |
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} |
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}; |
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|
264 | 0 | FutureMessageResult result = new FutureMessageResult(callable, muleContext); |
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|
266 | 0 | if (asyncExecutor != null) |
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{ |
268 | 0 | result.setExecutor(asyncExecutor); |
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} |
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|
271 | 0 | result.execute(); |
272 | 0 | return result; |
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} |
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public MuleMessage receiveRemote(String endpoint, int timeout) throws MuleException |
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{ |
277 | 0 | RemoteDispatcherNotification action = new RemoteDispatcherNotification(null, RemoteDispatcherNotification.ACTION_RECEIVE, endpoint); |
278 | 0 | action.setProperty(MuleProperties.MULE_REMOTE_SYNC_PROPERTY, "true"); |
279 | 0 | if (timeout != MuleEvent.TIMEOUT_NOT_SET_VALUE) |
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{ |
281 | 0 | action.setProperty(MuleProperties.MULE_EVENT_TIMEOUT_PROPERTY, new Long(timeout)); |
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} |
283 | 0 | return dispatchAction(action, true, timeout); |
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} |
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public FutureMessageResult asyncReceiveRemote(final String endpoint, final int timeout) |
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throws MuleException |
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{ |
289 | 0 | Callable callable = new Callable() |
290 | 0 | { |
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public Object call() throws Exception |
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{ |
293 | 0 | return receiveRemote(endpoint, timeout); |
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} |
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}; |
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|
297 | 0 | FutureMessageResult result = new FutureMessageResult(callable, muleContext); |
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|
299 | 0 | if (asyncExecutor != null) |
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{ |
301 | 0 | result.setExecutor(asyncExecutor); |
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} |
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|
304 | 0 | result.execute(); |
305 | 0 | return result; |
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} |
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protected MuleMessage doToRemoteComponent(String component, |
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Object payload, |
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Map messageProperties, |
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boolean synchronous) throws MuleException |
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{ |
313 | 0 | MuleMessage message = new DefaultMuleMessage(payload, messageProperties, muleContext); |
314 | 0 | message.setOutboundProperty(MuleProperties.MULE_REMOTE_SYNC_PROPERTY, synchronous); |
315 | 0 | setCredentials(message); |
316 | 0 | RemoteDispatcherNotification action = new RemoteDispatcherNotification(message, RemoteDispatcherNotification.ACTION_INVOKE, |
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"mule://" + component); |
318 | 0 | return dispatchAction(action, synchronous, |
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muleContext.getConfiguration().getDefaultResponseTimeout()); |
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} |
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protected MuleMessage doToRemote(String endpoint, |
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Object payload, |
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Map messageProperties, |
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boolean synchronous, |
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int timeout) throws MuleException |
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{ |
328 | 0 | MuleMessage message = new DefaultMuleMessage(payload, messageProperties, muleContext); |
329 | 0 | message.setOutboundProperty(MuleProperties.MULE_REMOTE_SYNC_PROPERTY, String.valueOf(synchronous)); |
330 | 0 | setCredentials(message); |
331 | 0 | RemoteDispatcherNotification action = new RemoteDispatcherNotification(message, (synchronous |
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? RemoteDispatcherNotification.ACTION_SEND : RemoteDispatcherNotification.ACTION_DISPATCH), endpoint); |
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|
334 | 0 | return dispatchAction(action, synchronous, timeout); |
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} |
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protected MuleMessage dispatchAction(RemoteDispatcherNotification action, boolean synchronous, int timeout) |
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throws MuleException |
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{ |
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OutboundEndpoint serverEndpoint; |
341 | 0 | if (synchronous) |
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{ |
343 | 0 | serverEndpoint = syncServerEndpoint; |
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} |
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else |
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{ |
347 | 0 | serverEndpoint = asyncServerEndpoint; |
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} |
349 | 0 | MuleMessage serializeMessage = new DefaultMuleMessage(action, muleContext); |
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|
351 | 0 | updateContext(serializeMessage, serverEndpoint, synchronous); |
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|
353 | 0 | ByteArrayOutputStream out = new ByteArrayOutputStream(); |
354 | 0 | wireFormat.write(out, serializeMessage, serverEndpoint.getEncoding()); |
355 | 0 | byte[] payload = out.toByteArray(); |
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|
357 | 0 | MuleMessage message = action.getMessage(); |
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|
359 | 0 | if (message == null) |
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{ |
361 | 0 | message = new DefaultMuleMessage(payload, muleContext); |
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} |
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else |
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{ |
365 | 0 | message = new DefaultMuleMessage(payload, message, muleContext); |
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} |
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|
368 | 0 | message.addProperties(action.getProperties()); |
369 | 0 | MuleSession session = new DefaultMuleSession(muleContext); |
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|
371 | 0 | MuleEvent event = new DefaultMuleEvent(message, serverEndpoint, session); |
372 | 0 | event.setTimeout(timeout); |
373 | 0 | if (logger.isDebugEnabled()) |
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{ |
375 | 0 | logger.debug("MuleClient sending remote call to: " + action.getResourceIdentifier() + ". At " |
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+ serverEndpoint.toString() + " . Event is: " + event); |
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} |
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|
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|
380 | 0 | MuleMessage result = null; |
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|
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try |
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{ |
384 | 0 | MuleEvent resultEvent = serverEndpoint.process(event); |
385 | 0 | if (resultEvent != null) |
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{ |
387 | 0 | result = resultEvent.getMessage(); |
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} |
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|
390 | 0 | if (result != null && result.getPayload() != null) |
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{ |
392 | 0 | if (result.getPayload() instanceof NullPayload) |
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{ |
394 | 0 | return null; |
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} |
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Object response; |
398 | 0 | if (result.getPayload() instanceof InputStream) |
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{ |
400 | 0 | byte[] b = IOUtils.toByteArray((InputStream)result.getPayload()); |
401 | 0 | if(b.length==0) return null; |
402 | 0 | ByteArrayInputStream in = new ByteArrayInputStream(b); |
403 | 0 | response = wireFormat.read(in); |
404 | 0 | } |
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else |
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{ |
407 | 0 | ByteArrayInputStream in = new ByteArrayInputStream(result.getPayloadAsBytes()); |
408 | 0 | response = wireFormat.read(in); |
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} |
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|
411 | 0 | if (response instanceof RemoteDispatcherNotification) |
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{ |
413 | 0 | response = ((RemoteDispatcherNotification)response).getMessage(); |
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} |
415 | 0 | return (MuleMessage)response; |
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} |
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} |
418 | 0 | catch (Exception e) |
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{ |
420 | 0 | throw new DispatchException(event, serverEndpoint, e); |
421 | 0 | } |
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|
423 | 0 | if (logger.isDebugEnabled()) |
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{ |
425 | 0 | logger.debug("Result of MuleClient remote call is: " |
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+ (result == null ? "null" : result.getPayload())); |
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} |
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|
429 | 0 | return result; |
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} |
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public void dispose() |
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{ |
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|
435 | 0 | } |
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|
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protected void setCredentials(MuleMessage message) |
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{ |
439 | 0 | if (credentials != null) |
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{ |
441 | 0 | message.setOutboundProperty(MuleProperties.MULE_USER_PROPERTY, MuleCredentials.createHeader( |
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credentials.getUsername(), credentials.getPassword())); |
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} |
444 | 0 | } |
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|
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public WireFormat getWireFormat() |
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{ |
448 | 0 | return wireFormat; |
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} |
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public void setWireFormat(WireFormat wireFormat) |
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{ |
453 | 0 | this.wireFormat = wireFormat; |
454 | 0 | } |
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|
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protected void updateContext(MuleMessage message, ImmutableEndpoint endpoint, boolean synchronous) |
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throws MuleException |
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{ |
459 | 0 | RequestContext.setEvent(new DefaultMuleEvent(message, endpoint, new DefaultMuleSession(muleContext))); |
460 | 0 | } |
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} |