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 ProviderSession session;
  38     private Thread webSocketServerThread;
  39
  40     @Override
  41     public void onSessionInitiated(ProviderSession session) {
  42         DataBrokerService dataService = session.getService(DataBrokerService.class);
  43
  44         BrokerFacade.getInstance().setContext(session);
  45         BrokerFacade.getInstance().setDataService(dataService);
  46
  47         SchemaService schemaService = session.getService(SchemaService.class);
  48         listenerRegistration = schemaService.registerSchemaServiceListener(ControllerContext.getInstance());
  49         ControllerContext.getInstance().setSchemas(schemaService.getGlobalContext());
  50         ControllerContext.getInstance().setMountService(session.getService(MountService.class));
  51     }
  52
  53     @Override
  54     public void start(BundleContext context) throws Exception {
  55         bundleContext = context;
  56         brokerServiceTrancker = new ServiceTracker<>(context, Broker.class, this);
  57         brokerServiceTrancker.open();
  58         webSocketServerThread = new Thread(new WebSocketServer());
  59         webSocketServerThread.setName("Web socket server");
  60         webSocketServerThread.start();
  61     }
  62
  63     @Override
  64     public void stop(BundleContext context) {
  65         if (listenerRegistration != null) {
  66             try {
  67                 listenerRegistration.close();
  68             } catch (Exception e) {
  69                 e.printStackTrace();
  70             }
  71         }
  72         webSocketServerThread.interrupt();
  73         session.close();
  74         brokerServiceTrancker.close();
  75     }
  76
  77     @Override
  78     public Collection<ProviderFunctionality> getProviderFunctionality() {
  79         return Collections.emptySet();
  80     }
  81
  82     @Override
  83     public Broker addingService(ServiceReference<Broker> reference) {
  84         Broker broker = bundleContext.getService(reference);
  85         broker.registerProvider(this, bundleContext);
  86         return broker;
  87     }
  88
  89     @Override
  90     public void modifiedService(ServiceReference<Broker> reference, Broker service) {
  91         // NOOP
  92     }
  93
  94     @Override
  95     public void removedService(ServiceReference<Broker> reference, Broker service) {
  96         bundleContext.ungetService(reference);
  97         BrokerFacade.getInstance().setContext(null);
  98         BrokerFacade.getInstance().setDataService(null);
  99         ControllerContext.getInstance().setSchemas(null);
 100     }
 101 }