1 files changed, 145 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/host-http-osgi/src/main/java/org/apache/tuscany/sca/http/osgi/HttpServiceWrapper.java b/sca-java-2.x/tags/2.0.1-RC1/modules/host-http-osgi/src/main/java/org/apache/tuscany/sca/http/osgi/HttpServiceWrapper.java
new file mode 100644
index 0000000000..3cfca3e6c8
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/host-http-osgi/src/main/java/org/apache/tuscany/sca/http/osgi/HttpServiceWrapper.java
@@ -0,0 +1,145 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.tuscany.sca.http.osgi;
+
+import javax.servlet.Servlet;
+
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.InvalidSyntaxException;
+import org.osgi.framework.ServiceEvent;
+import org.osgi.framework.ServiceListener;
+import org.osgi.framework.ServiceReference;
+import org.osgi.service.http.HttpService;
+import org.osgi.util.tracker.ServiceTracker;
+
+/**
+ * A whiteboard for HttpService and Servlet
+ */
+public class HttpServiceWrapper {
+
+    static final String SERVLET_URI = "servlet.uri";
+    private ServiceTracker httpTracker;
+    private BundleContext bc;
+
+    private class HttpServiceTracker extends ServiceTracker {
+        private HttpServiceTracker() {
+            super(bc, HttpService.class.getName(), null);
+        }
+
+        @Override
+        public Object addingService(ServiceReference reference) {
+            HttpService httpService = (HttpService)super.addingService(reference);
+            // Register existing servlets
+            String filter = "(objectclass=" + Servlet.class.getName() + ")";
+            ServiceReference[] servlets = null;
+            try {
+                servlets = bc.getServiceReferences(null, filter);
+            } catch (InvalidSyntaxException e) {
+                throw new IllegalStateException(e);
+            }
+            for (int i = 0; servlets != null && i < servlets.length; i++) {
+                Servlet servlet = (Servlet)bc.getService(servlets[i]);
+                String alias = (String)servlets[i].getProperty(SERVLET_URI);
+
+                try {
+                    httpService.registerServlet(alias, servlet, null, null);
+                } catch (Exception e) {
+                    throw new IllegalStateException(e);
+                }
+            }
+            return httpService;
+        }
+    }
+
+    public HttpServiceWrapper(BundleContext bc) {
+        super();
+        this.bc = bc;
+    }
+
+    void open() {
+        httpTracker = new HttpServiceTracker();
+        httpTracker.open();
+
+        ServiceListener sl = new ServiceListener() {
+            public void serviceChanged(ServiceEvent ev) {
+                ServiceReference sr = ev.getServiceReference();
+                switch (ev.getType()) {
+                    case ServiceEvent.REGISTERED: {
+                        registerServlet(sr);
+                    }
+                        break;
+                    case ServiceEvent.UNREGISTERING: {
+                        unregisterServlet(sr);
+                    }
+                        break;
+                }
+            }
+        };
+
+        String filter = "(objectclass=" + Servlet.class.getName() + ")";
+        try {
+            bc.addServiceListener(sl, filter);
+            ServiceReference[] servlets = bc.getServiceReferences(null, filter);
+            for (int i = 0; servlets != null && i < servlets.length; i++) {
+                sl.serviceChanged(new ServiceEvent(ServiceEvent.REGISTERED, servlets[i]));
+            }
+        } catch (InvalidSyntaxException e) {
+            e.printStackTrace();
+        }
+    }
+
+    void close() {
+        if (httpTracker != null) {
+            httpTracker.close();
+        }
+    }
+
+    void registerServlet(ServiceReference sr) {
+        Servlet servlet = (Servlet)bc.getService(sr);
+        String alias = (String)sr.getProperty(SERVLET_URI);
+
+        Object[] httpServices = httpTracker.getServices();
+
+        for (int i = 0; httpServices != null && i < httpServices.length; i++) {
+            HttpService http = (HttpService)httpServices[i];
+            try {
+                http.registerServlet(alias, servlet, null, null);
+            } catch (Exception e) {
+                throw new IllegalStateException(e);
+            }
+        }
+    }
+
+    void unregisterServlet(ServiceReference sr) {
+        String alias = (String)sr.getProperty(SERVLET_URI);
+        Object[] httpServices = httpTracker.getServices();
+
+        for (int i = 0; httpServices != null && i < httpServices.length; i++) {
+            HttpService http = (HttpService)httpServices[i];
+            try {
+                http.unregister(alias);
+            } catch (Exception e) {
+                throw new IllegalStateException(e);
+            }
+            bc.ungetService(sr);
+        }
+    }
+
+}