[ONOS-2261] - OVSDB -- Create the implementation of DeviceProvider using

OVSDB protocol.
1.Notify the Device System when the ovsdb node is connected.
2.Notify the Device System when the ovsdb node is disconected.

Change-Id: Iff795bfaca624bf957eb1c17626dfb56e241550a

@@ -51,6 +51,7 @@
         <module>features</module>
         <module>tools/package/archetypes</module>
         <module>tools/package/branding</module>
+        <module>ovsdb</module>
     </modules>
 
     <url>http://onosproject.org/</url>

+<?xml version="1.0"?>
+<project
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+    xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.onosproject</groupId>
+        <artifactId>onos-ovsdb-providers</artifactId>
+        <version>1.3.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>onos-ovsdb-provider-device</artifactId>
+    <packaging>bundle</packaging>
+
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

+/*
+ * 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.ovsdb.providers.device;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.slf4j.LoggerFactory.getLogger;
+
+import java.net.URI;
+
+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.onlab.packet.ChassisId;
+import org.onosproject.net.DefaultAnnotations;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.MastershipRole;
+import org.onosproject.net.SparseAnnotations;
+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.device.DeviceService;
+import org.onosproject.net.provider.AbstractProvider;
+import org.onosproject.net.provider.ProviderId;
+import org.onosproject.ovsdb.controller.OvsdbController;
+import org.onosproject.ovsdb.controller.OvsdbNodeId;
+import org.onosproject.ovsdb.controller.OvsdbNodeListener;
+import org.slf4j.Logger;
+
+/**
+ * Provider which uses an ovsdb controller to detect device.
+ */
+@Component(immediate = true)
+@Service
+public class OvsdbDeviceProvider extends AbstractProvider
+        implements DeviceProvider {
+    private final Logger log = getLogger(getClass());
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected DeviceProviderRegistry providerRegistry;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected DeviceService deviceService;
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected OvsdbController controller;
+
+    private DeviceProviderService providerService;
+    private OvsdbNodeListener innerNodeListener = new InnerOvsdbNodeListener();
+    protected static final String ISNOTNULL = "OvsdbNodeId is not null";
+    private static final String UNKNOWN = "unknown";
+
+    @Activate
+    public void activate() {
+        providerService = providerRegistry.register(this);
+        controller.addNodeListener(innerNodeListener);
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        providerRegistry.unregister(this);
+        providerService = null;
+        log.info("Stopped");
+    }
+
+    public OvsdbDeviceProvider() {
+        super(new ProviderId("ovsdb", "org.onosproject.ovsdb.provider.device"));
+    }
+
+    @Override
+    public void triggerProbe(DeviceId deviceId) {
+        // TODO: This will be implemented later.
+        log.info("Triggering probe on device {}", deviceId);
+    }
+
+    @Override
+    public void roleChanged(DeviceId deviceId, MastershipRole newRole) {
+        // TODO: This will be implemented later.
+    }
+
+    @Override
+    public boolean isReachable(DeviceId deviceId) {
+        return true;
+    }
+
+    private class InnerOvsdbNodeListener implements OvsdbNodeListener {
+
+        @Override
+        public void nodeAdded(OvsdbNodeId nodeId) {
+            checkNotNull(nodeId, ISNOTNULL);
+            DeviceId deviceId = DeviceId.deviceId(nodeId.toString());
+            URI uri = URI.create(nodeId.toString());
+            ChassisId cid = new ChassisId();
+            String ipAddress = nodeId.getIpAddress();
+            SparseAnnotations annotations = DefaultAnnotations.builder()
+                    .set("ipaddress", ipAddress).build();
+            DeviceDescription deviceDescription = new DefaultDeviceDescription(
+                                                                               uri,
+                                                                               Device.Type.CONTROLLER,
+                                                                               UNKNOWN, UNKNOWN,
+                                                                               UNKNOWN, UNKNOWN,
+                                                                               cid,
+                                                                               annotations);
+            providerService.deviceConnected(deviceId, deviceDescription);
+
+        }
+
+        @Override
+        public void nodeRemoved(OvsdbNodeId nodeId) {
+            checkNotNull(nodeId, ISNOTNULL);
+            DeviceId deviceId = DeviceId.deviceId(nodeId.toString());
+            providerService.deviceDisconnected(deviceId);
+
+        }
+    }
+}

+/*
+ * 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.
+ */
+
+/**
+ *Provider that uses ovsdb controller as a means of infrastructure device discovery.
+ *
+ */
+package org.onosproject.ovsdb.providers.device;
\ No newline at end of file

+/*
+ * 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.ovsdb.providers.device;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.packet.IpAddress;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.MastershipRole;
+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.device.PortDescription;
+import org.onosproject.net.device.PortStatistics;
+import org.onosproject.net.provider.ProviderId;
+import org.onosproject.ovsdb.controller.OvsdbClientService;
+import org.onosproject.ovsdb.controller.OvsdbController;
+import org.onosproject.ovsdb.controller.OvsdbEventListener;
+import org.onosproject.ovsdb.controller.OvsdbNodeId;
+import org.onosproject.ovsdb.controller.OvsdbNodeListener;
+
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
+
+/**
+ * Test for ovsdb device provider.
+ */
+public class OvsdbDeviceProviderTest {
+    private final OvsdbDeviceProvider provider = new OvsdbDeviceProvider();
+    private final TestDeviceRegistry registry = new TestDeviceRegistry();
+    private final TestController controller = new TestController();
+
+    @Before
+    public void startUp() {
+        provider.providerRegistry = registry;
+        provider.controller = controller;
+        provider.activate();
+        assertNotNull("provider should be registered", registry.provider);
+    }
+
+    @After
+    public void tearDown() {
+        provider.deactivate();
+        provider.controller = null;
+        provider.providerRegistry = null;
+    }
+
+    @Test
+    public void triggerProbe() {
+
+    }
+
+    @Test
+    public void testNodeAdded() {
+        controller.listener.nodeAdded(new OvsdbNodeId(IpAddress
+                .valueOf("192.168.202.36"), 5000));
+        assertEquals("ovsdb node added", 1, registry.connected.size());
+    }
+
+    @Test
+    public void testNodeRemoved() {
+        controller.listener.nodeAdded(new OvsdbNodeId(IpAddress
+                .valueOf("192.168.202.36"), 5000));
+        controller.listener.nodeRemoved(new OvsdbNodeId(IpAddress
+                .valueOf("192.168.202.36"), 5000));
+        assertEquals("ovsdb node removded", 0, registry.connected.size());
+    }
+
+    private class TestDeviceRegistry implements DeviceProviderRegistry {
+        DeviceProvider provider;
+
+        Set<DeviceId> connected = new HashSet<>();
+        Multimap<DeviceId, PortDescription> ports = HashMultimap.create();
+        PortDescription descr = null;
+
+        @Override
+        public DeviceProviderService register(DeviceProvider provider) {
+            this.provider = provider;
+            return new TestProviderService();
+        }
+
+        @Override
+        public void unregister(DeviceProvider provider) {
+        }
+
+        @Override
+        public Set<ProviderId> getProviders() {
+            return null;
+        }
+
+        private class TestProviderService implements DeviceProviderService {
+
+            @Override
+            public DeviceProvider provider() {
+                return null;
+            }
+
+            @Override
+            public void deviceConnected(DeviceId deviceId,
+                                        DeviceDescription deviceDescription) {
+                connected.add(deviceId);
+            }
+
+            @Override
+            public void deviceDisconnected(DeviceId deviceId) {
+                connected.remove(deviceId);
+                ports.removeAll(deviceId);
+            }
+
+            @Override
+            public void updatePorts(DeviceId deviceId,
+                                    List<PortDescription> portDescriptions) {
+                for (PortDescription p : portDescriptions) {
+                    ports.put(deviceId, p);
+                }
+            }
+
+            @Override
+            public void portStatusChanged(DeviceId deviceId,
+                                          PortDescription portDescription) {
+                ports.put(deviceId, portDescription);
+                descr = portDescription;
+            }
+
+            @Override
+            public void receivedRoleReply(DeviceId deviceId,
+                                          MastershipRole requested,
+                                          MastershipRole response) {
+            }
+
+            @Override
+            public void updatePortStatistics(DeviceId deviceId,
+                                             Collection<PortStatistics> portStatistics) {
+
+            }
+
+        }
+    }
+
+    private class TestController implements OvsdbController {
+        OvsdbNodeListener listener = null;
+
+        @Override
+        public void addNodeListener(OvsdbNodeListener listener) {
+            this.listener = listener;
+        }
+
+        @Override
+        public void removeNodeListener(OvsdbNodeListener listener) {
+            this.listener = null;
+        }
+
+        @Override
+        public void addOvsdbEventListener(OvsdbEventListener listener) {
+
+        }
+
+        @Override
+        public void removeOvsdbEventListener(OvsdbEventListener listener) {
+
+        }
+
+        @Override
+        public List<OvsdbNodeId> getNodeIds() {
+            return null;
+        }
+
+        @Override
+        public OvsdbClientService getOvsdbClient(OvsdbNodeId nodeId) {
+            return null;
+        }
+
+    }
+
+}

+<?xml version="1.0"?>
+<project
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+    xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.onosproject</groupId>
+        <artifactId>onos-providers</artifactId>
+        <version>1.3.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>onos-ovsdb-providers</artifactId>
+    <packaging>pom</packaging>
+
+    <modules>
+        <module>device</module>
+    </modules>
+
+    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-ovsdb-api</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+         <dependency>
+            <groupId>org.easymock</groupId>
+            <artifactId>easymock</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

@@ -38,6 +38,7 @@
         <module>netconf</module>
         <module>null</module>
         <module>pcep</module>
+        <module>ovsdb</module>
     </modules>
 
     <dependencies>