opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/sal/binding/codegen/impl/RpcRoutingTableImpl.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.binding.codegen.impl;
   9
  10 import org.opendaylight.controller.sal.binding.api.rpc.RpcRoutingTable;
  11 import org.opendaylight.yangtools.yang.binding.BaseIdentity;
  12 import org.opendaylight.yangtools.yang.binding.RpcService;
  13 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  14
  15 import java.util.Collections;
  16 import java.util.Map;
  17 import java.util.concurrent.ConcurrentHashMap;
  18 import java.util.concurrent.ConcurrentMap;
  19
  20 import org.opendaylight.yangtools.yang.binding.DataObject;
  21 import org.opendaylight.controller.md.sal.common.api.routing.RouteChangePublisher;
  22 import org.opendaylight.controller.md.sal.common.api.routing.RouteChangeListener;
  23 import org.opendaylight.controller.md.sal.common.impl.routing.RoutingUtils;
  24 import org.opendaylight.yangtools.concepts.AbstractObjectRegistration;
  25 import org.opendaylight.yangtools.concepts.Identifiable;
  26 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  27 import org.opendaylight.yangtools.concepts.Mutable;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 class RpcRoutingTableImpl<C extends BaseIdentity, S extends RpcService> //
  32 implements //
  33         Mutable, //
  34         RpcRoutingTable<C, S>, //
  35         RouteChangePublisher<Class<? extends BaseIdentity>, InstanceIdentifier<?>> {
  36
  37     private static final Logger LOGGER = LoggerFactory.getLogger(RpcRoutingTableImpl.class);
  38     private final String routerName;
  39     private final Class<S> serviceType;
  40
  41     private final Class<C> contextType;
  42     private final ConcurrentMap<InstanceIdentifier<?>, S> routes;
  43     private final Map<InstanceIdentifier<?>, S> unmodifiableRoutes;
  44
  45     private RouteChangeListener<Class<? extends BaseIdentity>, InstanceIdentifier<?>> listener;
  46     private S defaultRoute;
  47
  48     public RpcRoutingTableImpl(String routerName,Class<C> contextType, Class<S> serviceType) {
  49         super();
  50         this.routerName = routerName;
  51         this.serviceType = serviceType;
  52         this.contextType = contextType;
  53         this.routes = new ConcurrentHashMap<>();
  54         this.unmodifiableRoutes = Collections.unmodifiableMap(routes);
  55     }
  56
  57     @Override
  58     public void setDefaultRoute(S target) {
  59         defaultRoute = target;
  60     }
  61
  62     @Override
  63     public S getDefaultRoute() {
  64         return defaultRoute;
  65     }
  66
  67     @Override
  68     public <L extends RouteChangeListener<Class<? extends BaseIdentity>, InstanceIdentifier<?>>> ListenerRegistration<L> registerRouteChangeListener(
  69             L listener) {
  70         return (ListenerRegistration<L>) new SingletonListenerRegistration<L>(listener);
  71     }
  72
  73     @Override
  74     public Class<C> getIdentifier() {
  75         return contextType;
  76     }
  77
  78     @Override
  79     @SuppressWarnings("unchecked")
  80     public void updateRoute(InstanceIdentifier<?> path, S service) {
  81         S previous = this.routes.put(path, service);
  82
  83         LOGGER.debug("Route {} updated to {} in routing table {}",path,service,this);
  84         @SuppressWarnings("rawtypes")
  85         RouteChangeListener listenerCapture = listener;
  86         if (previous == null && listenerCapture != null) {
  87             listenerCapture.onRouteChange(RoutingUtils.announcementChange(contextType, path));
  88         }
  89     }
  90
  91
  92     @Override
  93     @SuppressWarnings("unchecked")
  94     public void removeRoute(InstanceIdentifier<?> path) {
  95         S previous = this.routes.remove(path);
  96         LOGGER.debug("Route {} to {} removed in routing table {}",path,previous,this);
  97         @SuppressWarnings("rawtypes")
  98         RouteChangeListener listenerCapture = listener;
  99         if (previous != null && listenerCapture != null) {
 100             listenerCapture.onRouteChange(RoutingUtils.removalChange(contextType, path));
 101         }
 102     }
 103
 104     public void removeRoute(InstanceIdentifier<?> path, S service) {
 105         @SuppressWarnings("rawtypes")
 106         RouteChangeListener listenerCapture = listener;
 107         if (routes.remove(path, service) && listenerCapture != null) {
 108             LOGGER.debug("Route {} to {} removed in routing table {}",path,service,this);
 109             listenerCapture.onRouteChange(RoutingUtils.removalChange(contextType, path));
 110         }
 111     }
 112
 113     @Override
 114     public S getRoute(InstanceIdentifier<?> nodeInstance) {
 115         S route = routes.get(nodeInstance);
 116         if (route != null) {
 117             return route;
 118         }
 119         return getDefaultRoute();
 120     }
 121
 122     @Override
 123     public Map<InstanceIdentifier<?>, S> getRoutes() {
 124         return unmodifiableRoutes;
 125     }
 126
 127     protected void removeAllReferences(S service) {
 128
 129     }
 130
 131
 132
 133     @Override
 134     public String toString() {
 135         return "RpcRoutingTableImpl [router=" + routerName + ", service=" + serviceType.getSimpleName() + ", context="
 136                 + contextType.getSimpleName() + "]";
 137     }
 138
 139
 140
 141     private class SingletonListenerRegistration<L extends RouteChangeListener<Class<? extends BaseIdentity>, InstanceIdentifier<?>>> extends
 142             AbstractObjectRegistration<L>
 143             implements ListenerRegistration<L> {
 144
 145         public SingletonListenerRegistration(L instance) {
 146             super(instance);
 147             listener = instance;
 148         }
 149
 150         @Override
 151         protected void removeRegistration() {
 152             listener = null;
 153         }
 154     }
 155 }