Coverage Report - org.mule.module.jersey.JerseyResourcesComponent
 
Classes in this File Line Coverage Branch Coverage Complexity
JerseyResourcesComponent
0%
0/77
0%
0/24
0
 
 1  
 /*
 2  
  * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 3  
  * The software in this package is published under the terms of the CPAL v1.0
 4  
  * license, a copy of which has been included with this distribution in the
 5  
  * LICENSE.txt file.
 6  
  */
 7  
 package org.mule.module.jersey;
 8  
 
 9  
 import org.mule.api.MuleEvent;
 10  
 import org.mule.api.MuleMessage;
 11  
 import org.mule.api.component.JavaComponent;
 12  
 import org.mule.api.endpoint.EndpointURI;
 13  
 import org.mule.api.lifecycle.InitialisationException;
 14  
 import org.mule.api.processor.MessageProcessor;
 15  
 import org.mule.api.transformer.TransformerException;
 16  
 import org.mule.component.AbstractComponent;
 17  
 import org.mule.transport.http.HttpConnector;
 18  
 
 19  
 import com.sun.jersey.api.core.DefaultResourceConfig;
 20  
 import com.sun.jersey.core.header.InBoundHeaders;
 21  
 import com.sun.jersey.core.spi.component.ioc.IoCComponentProviderFactory;
 22  
 import com.sun.jersey.spi.container.ContainerRequest;
 23  
 import com.sun.jersey.spi.container.ContainerResponse;
 24  
 import com.sun.jersey.spi.container.WebApplication;
 25  
 import com.sun.jersey.spi.container.WebApplicationFactory;
 26  
 
 27  
 import java.io.InputStream;
 28  
 import java.net.URI;
 29  
 import java.net.URISyntaxException;
 30  
 import java.util.ArrayList;
 31  
 import java.util.HashSet;
 32  
 import java.util.List;
 33  
 import java.util.Set;
 34  
 
 35  
 import javax.ws.rs.ext.ExceptionMapper;
 36  
 
 37  
 import org.apache.commons.logging.Log;
 38  
 import org.apache.commons.logging.LogFactory;
 39  
 
 40  
 /**
 41  
  * Wraps a set of components which can get invoked by Jersey. This component will
 42  
  * map the MuleMessage format to the internal Jersey format. Jersey will then select
 43  
  * the appropriate component to invoke based on the request parameters/URI.
 44  
  */
 45  0
 public class JerseyResourcesComponent extends AbstractComponent
 46  
 {
 47  0
     public static String JERSEY_RESPONSE = "jersey_response";
 48  
 
 49  0
     protected final Log logger = LogFactory.getLog(this.getClass());
 50  
 
 51  
     private List<JavaComponent> components;
 52  
 
 53  
     private WebApplication application;
 54  
 
 55  0
     private List<ExceptionMapper<?>> exceptionMappers = new ArrayList<ExceptionMapper<?>>();
 56  
 
 57  
     @Override
 58  
     protected void doInitialise() throws InitialisationException
 59  
     {
 60  0
         super.doInitialise();
 61  
 
 62  0
         final Set<Class<?>> resources = new HashSet<Class<?>>();
 63  
 
 64  0
         if (components == null)
 65  
         {
 66  0
             throw new IllegalStateException("There must be at least one component in the Jersey resources.");
 67  
         }
 68  
 
 69  0
         initializeResources(resources);
 70  0
         initializeExceptionMappers(resources);
 71  
 
 72  0
         DefaultResourceConfig resourceConfig = createConfiguration(resources);
 73  
 
 74  0
         application = WebApplicationFactory.createWebApplication();
 75  0
         application.initiate(resourceConfig, getComponentProvider());
 76  0
     }
 77  
 
 78  
     protected void initializeResources(Set<Class<?>> resources) throws InitialisationException
 79  
     {
 80  
         // Initialize the Jersey resources using the components
 81  0
         for (JavaComponent component : components)
 82  
         {
 83  
             Class<?> c;
 84  
             try
 85  
             {
 86  0
                 c = component.getObjectType();
 87  0
                 resources.add(c);
 88  
             }
 89  0
             catch (Exception e)
 90  
             {
 91  0
                 throw new InitialisationException(e, this);
 92  0
             }
 93  0
         }
 94  0
     }
 95  
 
 96  
     protected void initializeExceptionMappers(final Set<Class<?>> resources)
 97  
     {
 98  
         // Initialise Exception Mappers
 99  0
         for (ExceptionMapper<?> exceptionMapper : exceptionMappers)
 100  
         {
 101  0
             resources.add(exceptionMapper.getClass());
 102  
         }
 103  0
     }
 104  
 
 105  
     protected DefaultResourceConfig createConfiguration(final Set<Class<?>> resources)
 106  
     {
 107  0
         return new DefaultResourceConfig(resources);
 108  
     }
 109  
 
 110  
     @Override
 111  
     protected Object doInvoke(MuleEvent event) throws Exception
 112  
     {
 113  0
         MuleMessage message = event.getMessage();
 114  
 
 115  0
         String path = (String) message.getInboundProperty(HttpConnector.HTTP_REQUEST_PROPERTY);
 116  0
         String contextPath = (String) message.getInboundProperty(HttpConnector.HTTP_CONTEXT_PATH_PROPERTY);
 117  0
         String query = null;
 118  0
         int queryIdx = path.indexOf('?');
 119  0
         if (queryIdx != -1)
 120  
         {
 121  0
             query = path.substring(queryIdx + 1);
 122  0
             path = path.substring(0, queryIdx);
 123  
         }
 124  
 
 125  0
         EndpointURI endpointUri = event.getEndpoint().getEndpointURI();
 126  0
         String host = message.getInboundProperty("Host", endpointUri.getHost());
 127  0
         String method = message.getInboundProperty(HttpConnector.HTTP_METHOD_PROPERTY);
 128  0
         InBoundHeaders headers = new InBoundHeaders();
 129  0
         for (Object prop : message.getInboundPropertyNames())
 130  
         {
 131  0
             Object property = message.getInboundProperty(prop.toString());
 132  0
             if (property != null)
 133  
             {
 134  0
                 headers.add(prop.toString(), property.toString());
 135  
             }
 136  0
         }
 137  
 
 138  
         String scheme;
 139  0
         if ("servlet".equals(endpointUri.getScheme()))
 140  
         {
 141  0
             scheme = "http";
 142  
         }
 143  
         else
 144  
         {
 145  0
             scheme = endpointUri.getScheme();
 146  
         }
 147  
 
 148  0
         URI baseUri = getBaseUri(endpointUri, scheme, host, contextPath);
 149  0
         URI completeUri = getCompleteUri(endpointUri, scheme, host, path, query);
 150  0
         ContainerRequest req = new ContainerRequest(application, method, baseUri, completeUri, headers,
 151  
             getInputStream(message));
 152  0
         if (logger.isDebugEnabled())
 153  
         {
 154  0
             logger.debug("Base URI: " + baseUri);
 155  0
             logger.debug("Complete URI: " + completeUri);
 156  
         }
 157  
 
 158  0
         MuleResponseWriter writer = new MuleResponseWriter(message);
 159  0
         ContainerResponse res = new ContainerResponse(application, req, writer);
 160  
 
 161  0
         application.handleRequest(req, res);
 162  
 
 163  0
         return writer.getResponse();
 164  
     }
 165  
 
 166  
     protected static InputStream getInputStream(MuleMessage message) throws TransformerException
 167  
     {
 168  0
         return message.getPayload(InputStream.class);
 169  
     }
 170  
 
 171  
     protected IoCComponentProviderFactory getComponentProvider()
 172  
     {
 173  0
         return new MuleComponentProviderFactory(muleContext, components);
 174  
     }
 175  
 
 176  
     protected static URI getCompleteUri(EndpointURI endpointUri,
 177  
                                         String scheme,
 178  
                                         String host,
 179  
                                         String path,
 180  
                                         String query) throws URISyntaxException
 181  
     {
 182  0
         String uri = scheme + "://" + host + path;
 183  0
         if (query != null)
 184  
         {
 185  0
             uri += "?" + query;
 186  
         }
 187  
 
 188  0
         return new URI(uri);
 189  
     }
 190  
 
 191  
     protected static URI getBaseUri(EndpointURI endpointUri, String scheme, String host, String contextPath)
 192  
         throws URISyntaxException
 193  
     {
 194  0
         if (!contextPath.endsWith("/"))
 195  
         {
 196  0
             contextPath += "/";
 197  
         }
 198  
 
 199  0
         return new URI(scheme + "://" + host + contextPath);
 200  
     }
 201  
 
 202  
     public List<JavaComponent> getComponents()
 203  
     {
 204  0
         return components;
 205  
     }
 206  
 
 207  
     public void setComponents(List<JavaComponent> components)
 208  
     {
 209  0
         this.components = components;
 210  0
     }
 211  
 
 212  
     public void setMessageProcessors(List<MessageProcessor> messageProcessors)
 213  
     {
 214  0
         List<JavaComponent> javaComponents = new ArrayList<JavaComponent>();
 215  0
         for (MessageProcessor mp : messageProcessors)
 216  
         {
 217  0
             if (mp instanceof JavaComponent)
 218  
             {
 219  0
                 javaComponents.add((JavaComponent) mp);
 220  
             }
 221  
             else
 222  
             {
 223  0
                 throw new IllegalStateException("Only JavaComponents are allowed as MessageProcessors. Type "
 224  
                                                 + mp.getClass().getName() + " is not allowed.");
 225  
             }
 226  
         }
 227  0
         setComponents(javaComponents);
 228  0
     }
 229  
 
 230  
     public void setExceptionMapper(ExceptionMapper<?> exceptionMapper)
 231  
     {
 232  0
         exceptionMappers.add(exceptionMapper);
 233  0
     }
 234  
 }