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

   1 package org.argeo.server.webextender;
   2
   3 import org.apache.catalina.Container;
   4 import org.apache.catalina.Context;
   5 import org.apache.catalina.Service;
   6 import org.springframework.osgi.web.deployer.WarDeployment;
   7 import org.springframework.osgi.web.deployer.tomcat.TomcatWarDeployer;
   8 import org.springframework.util.ObjectUtils;
   9
  10 /**
  11  * Wraps the Spring DM Tomcat deployer in order to avoid issue with call to
  12  * getServerInfo() when undeployed. We need to hack a lot here because Spring
  13  * OSGi Web is really not extendable.
  14  */
  15 public class TomcatDeployer extends TomcatWarDeployer {
  16         private String serverInfo;
  17         private Service service;
  18         private String contextPath = "/org.argeo.rap.webapp";
  19
  20         @Override
  21         public void setService(Object service) {
  22                 this.service = (Service) service;
  23                 super.setService(service);
  24                 // TODO: listen to OSGi service so that we get notified in the
  25                 // (unlikely) case the underlying service is updated
  26                 serverInfo = ((Service) service).getInfo();
  27                 if (log.isTraceEnabled())
  28                         log.trace("Argeo modified Tomcat deployer used");
  29         }
  30
  31         @Override
  32         protected String getServerInfo() {
  33                 return serverInfo;
  34         }
  35
  36         @Override
  37         protected void startDeployment(WarDeployment deployment) throws Exception {
  38                 // Context context = ((TomcatWarDeployment)
  39                 // deployment).getCatalinaContext();
  40                 // context.setCookies(false);
  41                 super.startDeployment(deployment);
  42
  43                 // Required for multiple RAP sessions to work with Tomcat
  44                 // see
  45                 // http://wiki.eclipse.org/RAP/FAQ#How_to_run_a_RAP_application_in_multiple_browser_tabs.2Fwindows.3F
  46                 Context context = getContext(contextPath);
  47                 if (context != null)
  48                         context.setCookies(false);
  49         }
  50
  51         /** @return null if not found */
  52         private Context getContext(String path) {
  53                 for (Container container : getHost().findChildren()) {
  54                         if (log.isTraceEnabled())
  55                                 log.trace(container.getClass() + ": " + container.getName());
  56                         if (container instanceof Context) {
  57                                 Context context = (Context) container;
  58                                 if (path.equals(context.getPath()))
  59                                         return context;
  60                         }
  61                 }
  62                 return null;
  63         }
  64
  65         private Container getHost() {
  66                 // get engine
  67                 Container container = service.getContainer();
  68
  69                 if (container == null)
  70                         throw new IllegalStateException(
  71                                         "The Tomcat server doesn't have any Engines defined");
  72                 // now get host
  73                 Container[] children = container.findChildren();
  74                 if (ObjectUtils.isEmpty(children))
  75                         throw new IllegalStateException(
  76                                         "The Tomcat server doesn't have any Hosts defined");
  77
  78                 // pick the first one and associate the context with it
  79                 return children[0];
  80         }
  81
  82         public void setContextPath(String contextPath) {
  83                 this.contextPath = contextPath;
  84         }
  85
  86 }