opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/rest/impl/RestconfProvider.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.sal.rest.impl;
   9
  10 import java.util.Collection;
  11 import java.util.Collections;
  12
  13 import org.opendaylight.controller.sal.core.api.Broker;
  14 import org.opendaylight.controller.sal.core.api.Broker.ProviderSession;
  15 import org.opendaylight.controller.sal.core.api.Provider;
  16 import org.opendaylight.controller.sal.core.api.data.DataBrokerService;
  17 import org.opendaylight.controller.sal.core.api.model.SchemaService;
  18 import org.opendaylight.controller.sal.core.api.mount.MountService;
  19 import org.opendaylight.controller.sal.restconf.impl.BrokerFacade;
  20 import org.opendaylight.controller.sal.restconf.impl.ControllerContext;
  21 import org.opendaylight.controller.sal.streams.websockets.WebSocketServer;
  22 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  23 import org.opendaylight.yangtools.yang.model.api.SchemaServiceListener;
  24 import org.osgi.framework.BundleActivator;
  25 import org.osgi.framework.BundleContext;
  26 import org.osgi.framework.ServiceReference;
  27 import org.osgi.util.tracker.ServiceTracker;
  28 import org.osgi.util.tracker.ServiceTrackerCustomizer;
  29
  30 public class RestconfProvider implements BundleActivator, Provider, ServiceTrackerCustomizer<Broker, Broker> {
  31
  32     public final static String NOT_INITALIZED_MSG = "Restconf is not initialized yet. Please try again later";
  33
  34     private ListenerRegistration<SchemaServiceListener> listenerRegistration;
  35     private ServiceTracker<Broker, Broker> brokerServiceTrancker;
  36     private BundleContext bundleContext;
  37     private Thread webSocketServerThread;
  38
  39     @Override
  40     public void onSessionInitiated(ProviderSession session) {
  41         DataBrokerService dataService = session.getService(DataBrokerService.class);
  42
  43         BrokerFacade.getInstance().setContext(session);
  44         BrokerFacade.getInstance().setDataService(dataService);
  45
  46         SchemaService schemaService = session.getService(SchemaService.class);
  47         listenerRegistration = schemaService.registerSchemaServiceListener(ControllerContext.getInstance());
  48         ControllerContext.getInstance().setSchemas(schemaService.getGlobalContext());
  49         ControllerContext.getInstance().setMountService(session.getService(MountService.class));
  50     }
  51
  52     @Override
  53     public void start(BundleContext context) throws Exception {
  54         String websocketPortStr = context.getProperty(WebSocketServer.WEBSOCKET_SERVER_CONFIG_PROPERTY);
  55         int websocketPort = (websocketPortStr != null && !"".equals(websocketPortStr))
  56                 ? Integer.parseInt(websocketPortStr) :  WebSocketServer.DEFAULT_PORT;
  57         bundleContext = context;
  58         webSocketServerThread = new Thread(WebSocketServer.createInstance(websocketPort));
  59         webSocketServerThread.setName("Web socket server");
  60         webSocketServerThread.start();
  61         brokerServiceTrancker = new ServiceTracker<>(context, Broker.class, this);
  62         brokerServiceTrancker.open();
  63     }
  64
  65     @Override
  66     public void stop(BundleContext context) {
  67         if (listenerRegistration != null) {
  68             try {
  69                 listenerRegistration.close();
  70             } catch (Exception e) {
  71                 e.printStackTrace();
  72             }
  73         }
  74         webSocketServerThread.interrupt();
  75         brokerServiceTrancker.close();
  76     }
  77
  78     @Override
  79     public Collection<ProviderFunctionality> getProviderFunctionality() {
  80         return Collections.emptySet();
  81     }
  82
  83     @Override
  84     public Broker addingService(ServiceReference<Broker> reference) {
  85         Broker broker = bundleContext.getService(reference);
  86         broker.registerProvider(this, bundleContext);
  87         return broker;
  88     }
  89
  90     @Override
  91     public void modifiedService(ServiceReference<Broker> reference, Broker service) {
  92         // NOOP
  93     }
  94
  95     @Override
  96     public void removedService(ServiceReference<Broker> reference, Broker service) {
  97         bundleContext.ungetService(reference);
  98         BrokerFacade.getInstance().setContext(null);
  99         BrokerFacade.getInstance().setDataService(null);
 100         ControllerContext.getInstance().setSchemas(null);
 101     }
 102 }