Make WebSocket activation configurable.

[lgpl/argeo-commons.git] / org.argeo.ext.equinox.jetty / src / org / argeo / equinox / jetty / CmsJettyCustomizer.java

diff --git a/org.argeo.ext.equinox.jetty/src/org/argeo/equinox/jetty/CmsJettyCustomizer.java b/org.argeo.ext.equinox.jetty/src/org/argeo/equinox/jetty/CmsJettyCustomizer.java
new file mode 100644 (file)
index 0000000..60d2371
--- /dev/null
+++ b/org.argeo.ext.equinox.jetty/src/org/argeo/equinox/jetty/CmsJettyCustomizer.java
@@ -0,0 +1,51 @@
+package org.argeo.equinox.jetty;
+
+import java.util.Dictionary;
+
+import javax.servlet.ServletException;
+
+import org.eclipse.equinox.http.jetty.JettyCustomizer;
+import org.eclipse.jetty.servlet.ServletContextHandler;
+import org.eclipse.jetty.websocket.jsr356.server.ServerContainer;
+import org.eclipse.jetty.websocket.jsr356.server.deploy.WebSocketServerContainerInitializer;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.FrameworkUtil;
+
+/** Customises the Jetty HTTP server. */
+public class CmsJettyCustomizer extends JettyCustomizer {
+       private BundleContext bc = FrameworkUtil.getBundle(CmsJettyCustomizer.class).getBundleContext();
+
+       @Override
+       public Object customizeContext(Object context, Dictionary<String, ?> settings) {
+               // WebSocket
+               Object webSocketEnabled = settings.get("websocket.enabled");
+               if (webSocketEnabled != null && webSocketEnabled.toString().equals("true")) {
+                       ServletContextHandler servletContextHandler = (ServletContextHandler) context;
+                       new WebSocketInit(servletContextHandler).start();
+               }
+               return super.customizeContext(context, settings);
+
+       }
+
+       /** Configure websocket container asynchronously as it may take some time */
+       private class WebSocketInit extends Thread {
+               ServletContextHandler servletContextHandler;
+
+               public WebSocketInit(ServletContextHandler servletContextHandler) {
+                       super("WebSocket Init");
+                       this.servletContextHandler = servletContextHandler;
+               }
+
+               @Override
+               public void run() {
+                       ServerContainer serverContainer;
+                       try {
+                               serverContainer = WebSocketServerContainerInitializer.configureContext(servletContextHandler);
+                       } catch (ServletException e) {
+                               throw new IllegalStateException("Cannot configure web sockets", e);
+                       }
+                       bc.registerService(javax.websocket.server.ServerContainer.class, serverContainer, null);
+               }
+
+       }
+}