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