server/runtime/org.argeo.server.webextender/src/main/java/org/argeo/server/webextender/TomcatDeployer.java

   1 /*
   2  * Copyright (C) 2007-2012 Mathieu Baudier
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.server.webextender;
  17
  18 import org.apache.catalina.Container;
  19 import org.apache.catalina.Context;
  20 import org.apache.catalina.Service;
  21 import org.springframework.osgi.web.deployer.WarDeployment;
  22 import org.springframework.osgi.web.deployer.tomcat.TomcatWarDeployer;
  23 import org.springframework.util.ObjectUtils;
  24
  25 /**
  26  * Wraps the Spring DM Tomcat deployer in order to avoid issue with call to
  27  * getServerInfo() when undeployed. We need to hack a lot here because Spring
  28  * OSGi Web is really not extendable.
  29  */
  30 public class TomcatDeployer extends TomcatWarDeployer {
  31         private String serverInfo;
  32         private Service service;
  33         private String contextPath = "/org.argeo.rap.webapp";
  34
  35         @Override
  36         public void setService(Object service) {
  37                 this.service = (Service) service;
  38                 super.setService(service);
  39                 // TODO: listen to OSGi service so that we get notified in the
  40                 // (unlikely) case the underlying service is updated
  41                 serverInfo = ((Service) service).getInfo();
  42                 if (log.isTraceEnabled())
  43                         log.trace("Argeo modified Tomcat deployer used");
  44         }
  45
  46         @Override
  47         protected String getServerInfo() {
  48                 return serverInfo;
  49         }
  50
  51         @Override
  52         protected void startDeployment(WarDeployment deployment) throws Exception {
  53                 // Context context = ((TomcatWarDeployment)
  54                 // deployment).getCatalinaContext();
  55                 // context.setCookies(false);
  56                 super.startDeployment(deployment);
  57
  58                 // Required for multiple RAP sessions to work with Tomcat
  59                 // see
  60                 // http://wiki.eclipse.org/RAP/FAQ#How_to_run_a_RAP_application_in_multiple_browser_tabs.2Fwindows.3F
  61                 Context context = getContext(contextPath);
  62                 if (context != null)
  63                         context.setCookies(false);
  64         }
  65
  66         /** @return null if not found */
  67         private Context getContext(String path) {
  68                 for (Container container : getHost().findChildren()) {
  69                         if (log.isTraceEnabled())
  70                                 log.trace(container.getClass() + ": " + container.getName());
  71                         if (container instanceof Context) {
  72                                 Context context = (Context) container;
  73                                 if (path.equals(context.getPath()))
  74                                         return context;
  75                         }
  76                 }
  77                 return null;
  78         }
  79
  80         private Container getHost() {
  81                 // get engine
  82                 Container container = service.getContainer();
  83
  84                 if (container == null)
  85                         throw new IllegalStateException(
  86                                         "The Tomcat server doesn't have any Engines defined");
  87                 // now get host
  88                 Container[] children = container.findChildren();
  89                 if (ObjectUtils.isEmpty(children))
  90                         throw new IllegalStateException(
  91                                         "The Tomcat server doesn't have any Hosts defined");
  92
  93                 // pick the first one and associate the context with it
  94                 return children[0];
  95         }
  96
  97         public void setContextPath(String contextPath) {
  98                 this.contextPath = contextPath;
  99         }
 100
 101 }