1 files changed, 125 insertions, 0 deletions
diff --git a/framework/src/onos/providers/bgp/topology/src/main/java/org/onosproject/provider/bgp/topology/impl/BgpTopologyProvider.java b/framework/src/onos/providers/bgp/topology/src/main/java/org/onosproject/provider/bgp/topology/impl/BgpTopologyProvider.java
new file mode 100755
index 00000000..34803663
--- /dev/null
+++ b/framework/src/onos/providers/bgp/topology/src/main/java/org/onosproject/provider/bgp/topology/impl/BgpTopologyProvider.java
@@ -0,0 +1,125 @@
+/*
+ * Copyright 2015 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.provider.bgp.topology.impl;
+
+import static org.onosproject.bgp.controller.BgpDpid.uri;
+import static org.onosproject.net.DeviceId.deviceId;
+
+import org.onlab.packet.ChassisId;
+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.onosproject.bgp.controller.BgpController;
+import org.onosproject.bgp.controller.BgpDpid;
+import org.onosproject.bgp.controller.BgpNodeListener;
+import org.onosproject.bgpio.protocol.linkstate.BgpNodeLSNlriVer4;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.MastershipRole;
+import org.onosproject.net.device.DefaultDeviceDescription;
+import org.onosproject.net.device.DeviceDescription;
+import org.onosproject.net.device.DeviceProvider;
+import org.onosproject.net.device.DeviceProviderRegistry;
+import org.onosproject.net.device.DeviceProviderService;
+import org.onosproject.net.provider.AbstractProvider;
+import org.onosproject.net.provider.ProviderId;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Provider which uses an BGP controller to detect network infrastructure topology.
+ */
+@Component(immediate = true)
+public class BgpTopologyProvider extends AbstractProvider implements DeviceProvider {
+
+    public BgpTopologyProvider() {
+        super(new ProviderId("bgp", "org.onosproject.provider.bgp"));
+    }
+
+    private static final Logger log = LoggerFactory.getLogger(BgpTopologyProvider.class);
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected DeviceProviderRegistry deviceProviderRegistry;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected BgpController controller;
+
+    private DeviceProviderService deviceProviderService;
+
+    private InternalBgpProvider listener = new InternalBgpProvider();
+    private static final String UNKNOWN = "unknown";
+
+    @Activate
+    public void activate() {
+        deviceProviderService = deviceProviderRegistry.register(this);
+        controller.addListener(listener);
+    }
+
+    @Deactivate
+    public void deactivate() {
+        controller.removeListener(listener);
+    }
+
+    /*
+     * Implements device and link update.
+     */
+    private class InternalBgpProvider implements BgpNodeListener {
+
+        @Override
+        public void addNode(BgpNodeLSNlriVer4 nodeNlri) {
+            log.debug("Add node {}", nodeNlri.toString());
+
+            if (deviceProviderService == null) {
+                return;
+            }
+            BgpDpid nodeUri = new BgpDpid(nodeNlri);
+            DeviceId deviceId = deviceId(uri(nodeUri.toString()));
+            ChassisId cId = new ChassisId();
+
+            DeviceDescription description = new DefaultDeviceDescription(uri(nodeUri.toString()), Device.Type.ROUTER,
+                                                                         UNKNOWN, UNKNOWN, UNKNOWN, UNKNOWN, cId);
+            deviceProviderService.deviceConnected(deviceId, description);
+
+        }
+
+        @Override
+        public void deleteNode(BgpNodeLSNlriVer4 nodeNlri) {
+            log.debug("Delete node {}", nodeNlri.toString());
+
+            if (deviceProviderService == null) {
+                return;
+            }
+
+            BgpDpid nodeUri = new BgpDpid(nodeNlri);
+            deviceProviderService.deviceDisconnected(deviceId(uri(nodeUri.toString())));
+        }
+    }
+
+    @Override
+    public void triggerProbe(DeviceId deviceId) {
+        // TODO Auto-generated method stub
+    }
+
+    @Override
+    public void roleChanged(DeviceId deviceId, MastershipRole newRole) {
+    }
+
+    @Override
+    public boolean isReachable(DeviceId deviceId) {
+        // TODO Auto-generated method stub
+        return true;
+    }
+}