[ONOS-3116] Port Pair Group service implementation

Change-Id: I0e5b0df35c43f9ec750e77703dc1a657e71abfca

+/*
+ * 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.vtnrsc.portpairgroup.impl;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.slf4j.LoggerFactory.getLogger;
+
+import java.util.Collections;
+
+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.util.KryoNamespace;
+import org.onosproject.store.serializers.KryoNamespaces;
+import org.onosproject.store.service.EventuallyConsistentMap;
+import org.onosproject.store.service.MultiValuedTimestamp;
+import org.onosproject.store.service.StorageService;
+import org.onosproject.store.service.WallClockTimestamp;
+import org.onosproject.vtnrsc.PortPairGroup;
+import org.onosproject.vtnrsc.PortPairGroupId;
+import org.onosproject.vtnrsc.portpairgroup.PortPairGroupService;
+import org.slf4j.Logger;
+
+/**
+ * Provides implementation of the portPairGroupService.
+ */
+@Component(immediate = true)
+@Service
+public class PortPairGroupManager implements PortPairGroupService {
+
+    private final Logger log = getLogger(getClass());
+
+    private static final String PORT_PAIR_GROUP_ID_NULL = "PortPairGroup ID cannot be null";
+    private static final String PORT_PAIR_GROUP_NULL = "PortPairGroup cannot be null";
+
+    private EventuallyConsistentMap<PortPairGroupId, PortPairGroup> portPairGroupStore;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected StorageService storageService;
+
+    @Activate
+    public void activate() {
+
+        KryoNamespace.Builder serializer = KryoNamespace.newBuilder()
+                .register(KryoNamespaces.API)
+                .register(MultiValuedTimestamp.class)
+                .register(PortPairGroup.class);
+
+        portPairGroupStore = storageService
+                .<PortPairGroupId, PortPairGroup>eventuallyConsistentMapBuilder()
+                .withName("portpairgroupstore").withSerializer(serializer)
+                .withTimestampProvider((k, v) -> new WallClockTimestamp()).build();
+
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        portPairGroupStore.destroy();
+        log.info("Stopped");
+    }
+
+    @Override
+    public boolean exists(PortPairGroupId portPairGroupId) {
+        checkNotNull(portPairGroupId, PORT_PAIR_GROUP_ID_NULL);
+        return portPairGroupStore.containsKey(portPairGroupId);
+    }
+
+    @Override
+    public int getPortPairGroupCount() {
+        return portPairGroupStore.size();
+    }
+
+    @Override
+    public Iterable<PortPairGroup> getPortPairGroups() {
+        return Collections.unmodifiableCollection(portPairGroupStore.values());
+    }
+
+    @Override
+    public PortPairGroup getPortPairGroup(PortPairGroupId portPairGroupId) {
+        checkNotNull(portPairGroupId, PORT_PAIR_GROUP_ID_NULL);
+        return portPairGroupStore.get(portPairGroupId);
+    }
+
+    @Override
+    public boolean createPortPairGroup(PortPairGroup portPairGroup) {
+        checkNotNull(portPairGroup, PORT_PAIR_GROUP_NULL);
+
+        portPairGroupStore.put(portPairGroup.portPairGroupId(), portPairGroup);
+        if (!portPairGroupStore.containsKey(portPairGroup.portPairGroupId())) {
+            log.debug("The portPairGroup is created failed which identifier was {}", portPairGroup.portPairGroupId()
+                      .toString());
+            return false;
+        }
+        return true;
+    }
+
+    @Override
+    public boolean updatePortPairGroup(PortPairGroup portPairGroup) {
+        checkNotNull(portPairGroup, PORT_PAIR_GROUP_NULL);
+
+        if (!portPairGroupStore.containsKey(portPairGroup.portPairGroupId())) {
+            log.debug("The portPairGroup is not exist whose identifier was {} ",
+                      portPairGroup.portPairGroupId().toString());
+            return false;
+        }
+
+        portPairGroupStore.put(portPairGroup.portPairGroupId(), portPairGroup);
+
+        if (!portPairGroup.equals(portPairGroupStore.get(portPairGroup.portPairGroupId()))) {
+            log.debug("The portPairGroup is updated failed whose identifier was {} ",
+                      portPairGroup.portPairGroupId().toString());
+            return false;
+        }
+        return true;
+    }
+
+    @Override
+    public boolean removePortPairGroup(PortPairGroupId portPairGroupId) {
+        checkNotNull(portPairGroupId, PORT_PAIR_GROUP_NULL);
+
+        portPairGroupStore.remove(portPairGroupId);
+        if (portPairGroupStore.containsKey(portPairGroupId)) {
+            log.debug("The portPairGroup is removed failed whose identifier was {}",
+                      portPairGroupId.toString());
+            return false;
+        }
+        return true;
+    }
+}

+/*
+ * 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.
+ */
+
+/**
+ * Implementation of service for interacting with the inventory of port pair groups.
+ */
+package org.onosproject.vtnrsc.portpairgroup.impl;