[ONOS-2263] - OVSDB -- Create the implementation of TunnelProvider using

OVSDB protocol.
1.Notify the Tunnel System when tunnel is added/updated/removed.

Change-Id: I98d918a55dab77005531918ecb8864dfafbc0c42

@@ -16,6 +16,7 @@
     <modules>
         <module>device</module>
         <module>host</module>
+        <module>tunnel</module>
     </modules>
 
     <dependencies>

+<?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-tunnel</artifactId>
+    <packaging>bundle</packaging>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.easymock</groupId>
+            <artifactId>easymock</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.provider.tunnel;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+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.incubator.net.tunnel.Tunnel;
+import org.onosproject.incubator.net.tunnel.TunnelDescription;
+import org.onosproject.incubator.net.tunnel.TunnelId;
+import org.onosproject.incubator.net.tunnel.TunnelProvider;
+import org.onosproject.incubator.net.tunnel.TunnelProviderRegistry;
+import org.onosproject.incubator.net.tunnel.TunnelProviderService;
+import org.onosproject.incubator.net.tunnel.TunnelService;
+import org.onosproject.net.ElementId;
+import org.onosproject.net.Path;
+import org.onosproject.net.provider.AbstractProvider;
+import org.onosproject.net.provider.ProviderId;
+import org.slf4j.Logger;
+
+/**
+ * Provider which uses when tunnel added/removed.
+ */
+@Component(immediate = true)
+@Service
+public class OvsdbTunnelProvider extends AbstractProvider
+        implements TunnelProvider {
+    private final Logger log = getLogger(getClass());
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected TunnelProviderRegistry providerRegistry;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected TunnelService tunnelService;
+
+    private TunnelProviderService providerService;
+
+    @Activate
+    public void activate() {
+        providerService = providerRegistry.register(this);
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        providerRegistry.unregister(this);
+        providerService = null;
+        log.info("Stopped");
+    }
+
+    public OvsdbTunnelProvider() {
+        super(new ProviderId("ovsdb", "org.onosproject.ovsdb.provider.tunnel"));
+    }
+
+    @Override
+    public void setupTunnel(Tunnel tunnel, Path path) {
+        // TODO: This will be implemented later.
+    }
+
+    @Override
+    public void setupTunnel(ElementId srcElement, Tunnel tunnel, Path path) {
+        // TODO: This will be implemented later.
+    }
+
+    @Override
+    public void releaseTunnel(Tunnel tunnel) {
+        // TODO: This will be implemented later.
+    }
+
+    @Override
+    public void releaseTunnel(ElementId srcElement, Tunnel tunnel) {
+        // TODO: This will be implemented later.
+    }
+
+    @Override
+    public void updateTunnel(Tunnel tunnel, Path path) {
+        // TODO: This will be implemented later.
+    }
+
+    @Override
+    public void updateTunnel(ElementId srcElement, Tunnel tunnel, Path path) {
+        // TODO: This will be implemented later.
+    }
+
+    @Override
+    public TunnelId tunnelAdded(TunnelDescription tunnel) {
+        return providerService.tunnelAdded(tunnel);
+    }
+
+    @Override
+    public void tunnelRemoved(TunnelDescription tunnel) {
+        providerService.tunnelRemoved(tunnel);
+    }
+
+    @Override
+    public void tunnelUpdated(TunnelDescription tunnel) {
+        providerService.tunnelUpdated(tunnel);
+    }
+
+    @Override
+    public Tunnel tunnelQueryById(TunnelId tunnelId) {
+        // TODO: This will be implemented later.
+        return null;
+    }
+}

+/*
+ * 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 tunnel discovery.
+ *
+ */
+package org.onosproject.ovsdb.provider.tunnel;
\ 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.provider.tunnel;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+import java.util.ArrayList;
+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.core.DefaultGroupId;
+import org.onosproject.incubator.net.tunnel.DefaultTunnelDescription;
+import org.onosproject.incubator.net.tunnel.IpTunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.Tunnel;
+import org.onosproject.incubator.net.tunnel.TunnelDescription;
+import org.onosproject.incubator.net.tunnel.TunnelEndPoint;
+import org.onosproject.incubator.net.tunnel.TunnelId;
+import org.onosproject.incubator.net.tunnel.TunnelName;
+import org.onosproject.incubator.net.tunnel.TunnelProvider;
+import org.onosproject.incubator.net.tunnel.TunnelProviderRegistry;
+import org.onosproject.incubator.net.tunnel.TunnelProviderService;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.DefaultAnnotations;
+import org.onosproject.net.DefaultLink;
+import org.onosproject.net.DefaultPath;
+import org.onosproject.net.Link;
+import org.onosproject.net.SparseAnnotations;
+import org.onosproject.net.provider.AbstractProviderService;
+import org.onosproject.net.provider.ProviderId;
+
+/**
+ * Test for ovsdb tunnel provider.
+ */
+public class OvsdbTunnelProviderTest {
+    private final OvsdbTunnelProvider provider = new OvsdbTunnelProvider();
+    private final TestTunnelRegistry tunnelRegistry = new TestTunnelRegistry();
+    private TestTunnelProviderService providerService;
+
+    @Before
+    public void setUp() {
+        provider.providerRegistry = tunnelRegistry;
+        provider.activate();
+    }
+
+    @Test
+    public void basics() {
+        assertNotNull("registration expected", providerService);
+        assertEquals("incorrect provider", provider, providerService.provider());
+    }
+
+    @Test
+    public void testTunnelAdded() {
+        TunnelEndPoint src = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                .valueOf("192.168.1.1"));
+        TunnelEndPoint dst = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                .valueOf("192.168.1.3"));
+        SparseAnnotations annotations = DefaultAnnotations.builder()
+                .set("bandwidth", "1024").build();
+        Link link = new DefaultLink(
+                                    this.provider.id(),
+                                    ConnectPoint.deviceConnectPoint("192.168.2.3/20"),
+                                    ConnectPoint.deviceConnectPoint("192.168.2.4/30"),
+                                    Link.Type.DIRECT);
+        List<Link> links = new ArrayList<Link>();
+        links.add(link);
+        TunnelDescription tunnel = new DefaultTunnelDescription(
+                                                                TunnelId.valueOf("1234"),
+                                                                src,
+                                                                dst,
+                                                                Tunnel.Type.VXLAN,
+                                                                new DefaultGroupId(0),
+                                                                this.provider.id(),
+                                                                TunnelName.tunnelName("tunnel12"),
+                                                                new DefaultPath(this.provider.id(), links, 0.3),
+                                                                annotations);
+        provider.tunnelAdded(tunnel);
+        assertEquals(1, providerService.tunnelSet.size());
+    }
+
+    @Test
+    public void testTunnelRemoved() {
+        TunnelEndPoint src = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                .valueOf("192.168.1.1"));
+        TunnelEndPoint dst = IpTunnelEndPoint.ipTunnelPoint(IpAddress
+                .valueOf("192.168.1.3"));
+        SparseAnnotations annotations = DefaultAnnotations.builder()
+                .set("bandwidth", "1024").build();
+        Link link = new DefaultLink(
+                                    this.provider.id(),
+                                    ConnectPoint.deviceConnectPoint("192.168.2.3/20"),
+                                    ConnectPoint.deviceConnectPoint("192.168.2.4/30"),
+                                    Link.Type.DIRECT);
+        List<Link> links = new ArrayList<Link>();
+        links.add(link);
+        TunnelDescription tunnel = new DefaultTunnelDescription(
+                                                                TunnelId.valueOf("1234"),
+                                                                src,
+                                                                dst,
+                                                                Tunnel.Type.VXLAN,
+                                                                new DefaultGroupId(0),
+                                                                this.provider.id(),
+                                                                TunnelName.tunnelName("tunnel1"),
+                                                                new DefaultPath(this.provider.id(), links, 0.3),
+                                                                annotations);
+        provider.tunnelRemoved(tunnel);
+        assertEquals(0, providerService.tunnelSet.size());
+    }
+
+    @After
+    public void tearDown() {
+        provider.deactivate();
+        provider.providerRegistry = null;
+    }
+
+    private class TestTunnelRegistry implements TunnelProviderRegistry {
+
+        @Override
+        public TunnelProviderService register(TunnelProvider provider) {
+            providerService = new TestTunnelProviderService(provider);
+            return providerService;
+        }
+
+        @Override
+        public void unregister(TunnelProvider provider) {
+
+        }
+
+        @Override
+        public Set<ProviderId> getProviders() {
+            return null;
+        }
+
+    }
+
+    private class TestTunnelProviderService
+            extends AbstractProviderService<TunnelProvider>
+            implements TunnelProviderService {
+        Set<TunnelDescription> tunnelSet = new HashSet<TunnelDescription>();
+
+        protected TestTunnelProviderService(TunnelProvider provider) {
+            super(provider);
+        }
+
+        @Override
+        public TunnelId tunnelAdded(TunnelDescription tunnel) {
+            tunnelSet.add(tunnel);
+            return null;
+        }
+
+        @Override
+        public void tunnelRemoved(TunnelDescription tunnel) {
+            tunnelSet.remove(tunnel);
+        }
+
+        @Override
+        public void tunnelUpdated(TunnelDescription tunnel) {
+
+        }
+
+        @Override
+        public Tunnel tunnelQueryById(TunnelId tunnelId) {
+            return null;
+        }
+
+    }
+}