1 files changed, 215 insertions, 0 deletions
diff --git a/framework/src/onos/core/net/src/main/java/org/onosproject/net/topology/impl/TopologyManager.java b/framework/src/onos/core/net/src/main/java/org/onosproject/net/topology/impl/TopologyManager.java
new file mode 100644
index 00000000..04c4f1c1
--- /dev/null
+++ b/framework/src/onos/core/net/src/main/java/org/onosproject/net/topology/impl/TopologyManager.java
@@ -0,0 +1,215 @@
+/*
+ * Copyright 2014 Open Networking Laboratory
+ *
+ * Licensed 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.onosproject.net.topology.impl;
+
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.apache.felix.scr.annotations.Service;
+import org.onosproject.net.provider.AbstractListenerProviderRegistry;
+import org.onosproject.event.Event;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.Link;
+import org.onosproject.net.Path;
+import org.onosproject.net.provider.AbstractProviderService;
+import org.onosproject.net.topology.ClusterId;
+import org.onosproject.net.topology.GraphDescription;
+import org.onosproject.net.topology.LinkWeight;
+import org.onosproject.net.topology.Topology;
+import org.onosproject.net.topology.TopologyCluster;
+import org.onosproject.net.topology.TopologyEvent;
+import org.onosproject.net.topology.TopologyGraph;
+import org.onosproject.net.topology.TopologyListener;
+import org.onosproject.net.topology.TopologyProvider;
+import org.onosproject.net.topology.TopologyProviderRegistry;
+import org.onosproject.net.topology.TopologyProviderService;
+import org.onosproject.net.topology.TopologyService;
+import org.onosproject.net.topology.TopologyStore;
+import org.onosproject.net.topology.TopologyStoreDelegate;
+import org.slf4j.Logger;
+
+import java.util.List;
+import java.util.Set;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.onosproject.security.AppGuard.checkPermission;
+import static org.slf4j.LoggerFactory.getLogger;
+import static org.onosproject.security.AppPermission.Type.*;
+
+
+/**
+ * Provides basic implementation of the topology SB &amp; NB APIs.
+ */
+@Component(immediate = true)
+@Service
+public class TopologyManager
+        extends AbstractListenerProviderRegistry<TopologyEvent, TopologyListener,
+                                                 TopologyProvider, TopologyProviderService>
+        implements TopologyService, TopologyProviderRegistry {
+
+    public static final String TOPOLOGY_NULL = "Topology cannot be null";
+    private static final String DEVICE_ID_NULL = "Device ID cannot be null";
+    private static final String CLUSTER_ID_NULL = "Cluster ID cannot be null";
+    private static final String CLUSTER_NULL = "Topology cluster cannot be null";
+    public static final String CONNECTION_POINT_NULL = "Connection point cannot be null";
+
+    private final Logger log = getLogger(getClass());
+
+    private TopologyStoreDelegate delegate = new InternalStoreDelegate();
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected TopologyStore store;
+
+    @Activate
+    public void activate() {
+        store.setDelegate(delegate);
+        eventDispatcher.addSink(TopologyEvent.class, listenerRegistry);
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        store.unsetDelegate(delegate);
+        eventDispatcher.removeSink(TopologyEvent.class);
+        log.info("Stopped");
+    }
+
+    @Override
+    public Topology currentTopology() {
+        checkPermission(TOPOLOGY_READ);
+        return store.currentTopology();
+    }
+
+    @Override
+    public boolean isLatest(Topology topology) {
+        checkPermission(TOPOLOGY_READ);
+        checkNotNull(topology, TOPOLOGY_NULL);
+        return store.isLatest(topology);
+    }
+
+    @Override
+    public Set<TopologyCluster> getClusters(Topology topology) {
+        checkPermission(TOPOLOGY_READ);
+        checkNotNull(topology, TOPOLOGY_NULL);
+        return store.getClusters(topology);
+    }
+
+    @Override
+    public TopologyCluster getCluster(Topology topology, ClusterId clusterId) {
+        checkPermission(TOPOLOGY_READ);
+        checkNotNull(topology, TOPOLOGY_NULL);
+        checkNotNull(topology, CLUSTER_ID_NULL);
+        return store.getCluster(topology, clusterId);
+    }
+
+    @Override
+    public Set<DeviceId> getClusterDevices(Topology topology, TopologyCluster cluster) {
+        checkPermission(TOPOLOGY_READ);
+        checkNotNull(topology, TOPOLOGY_NULL);
+        checkNotNull(topology, CLUSTER_NULL);
+        return store.getClusterDevices(topology, cluster);
+    }
+
+    @Override
+    public Set<Link> getClusterLinks(Topology topology, TopologyCluster cluster) {
+        checkPermission(TOPOLOGY_READ);
+        checkNotNull(topology, TOPOLOGY_NULL);
+        checkNotNull(topology, CLUSTER_NULL);
+        return store.getClusterLinks(topology, cluster);
+    }
+
+    @Override
+    public TopologyGraph getGraph(Topology topology) {
+        checkPermission(TOPOLOGY_READ);
+        checkNotNull(topology, TOPOLOGY_NULL);
+        return store.getGraph(topology);
+    }
+
+    @Override
+    public Set<Path> getPaths(Topology topology, DeviceId src, DeviceId dst) {
+        checkPermission(TOPOLOGY_READ);
+        checkNotNull(topology, TOPOLOGY_NULL);
+        checkNotNull(src, DEVICE_ID_NULL);
+        checkNotNull(dst, DEVICE_ID_NULL);
+        return store.getPaths(topology, src, dst);
+    }
+
+    @Override
+    public Set<Path> getPaths(Topology topology, DeviceId src, DeviceId dst, LinkWeight weight) {
+        checkPermission(TOPOLOGY_READ);
+
+        checkNotNull(topology, TOPOLOGY_NULL);
+        checkNotNull(src, DEVICE_ID_NULL);
+        checkNotNull(dst, DEVICE_ID_NULL);
+        checkNotNull(weight, "Link weight cannot be null");
+        return store.getPaths(topology, src, dst, weight);
+    }
+
+    @Override
+    public boolean isInfrastructure(Topology topology, ConnectPoint connectPoint) {
+        checkPermission(TOPOLOGY_READ);
+        checkNotNull(topology, TOPOLOGY_NULL);
+        checkNotNull(connectPoint, CONNECTION_POINT_NULL);
+        return store.isInfrastructure(topology, connectPoint);
+    }
+
+    @Override
+    public boolean isBroadcastPoint(Topology topology, ConnectPoint connectPoint) {
+        checkPermission(TOPOLOGY_READ);
+        checkNotNull(topology, TOPOLOGY_NULL);
+        checkNotNull(connectPoint, CONNECTION_POINT_NULL);
+        return store.isBroadcastPoint(topology, connectPoint);
+    }
+
+    // Personalized host provider service issued to the supplied provider.
+    @Override
+    protected TopologyProviderService createProviderService(TopologyProvider provider) {
+        return new InternalTopologyProviderService(provider);
+    }
+
+    private class InternalTopologyProviderService
+            extends AbstractProviderService<TopologyProvider>
+            implements TopologyProviderService {
+
+        InternalTopologyProviderService(TopologyProvider provider) {
+            super(provider);
+        }
+
+        @Override
+        public void topologyChanged(GraphDescription topoDescription,
+                                    List<Event> reasons) {
+            checkNotNull(topoDescription, "Topology description cannot be null");
+
+            TopologyEvent event = store.updateTopology(provider().id(),
+                                                       topoDescription, reasons);
+            if (event != null) {
+                log.info("Topology {} changed", event.subject());
+                post(event);
+            }
+        }
+    }
+
+    // Store delegate to re-post events emitted from the store.
+    private class InternalStoreDelegate implements TopologyStoreDelegate {
+        @Override
+        public void notify(TopologyEvent event) {
+            post(event);
+        }
+    }
+}