Refactored ClusterManager as proper fix for Karaf clean issue (Topic phi-fd-on)
Change-Id: Ibb328d73412855dd2d44ca6b734f738ae2996873
diff --git a/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/HazelcastClusterStore.java b/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/HazelcastClusterStore.java
new file mode 100644
index 0000000..d32f7a8
--- /dev/null
+++ b/core/store/dist/src/main/java/org/onosproject/store/cluster/impl/HazelcastClusterStore.java
@@ -0,0 +1,181 @@
+/*
+ * 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.store.cluster.impl;
+
+import com.google.common.base.Optional;
+import com.google.common.cache.LoadingCache;
+import com.google.common.collect.ImmutableSet;
+import com.hazelcast.core.IMap;
+import com.hazelcast.core.Member;
+import com.hazelcast.core.MemberAttributeEvent;
+import com.hazelcast.core.MembershipEvent;
+import com.hazelcast.core.MembershipListener;
+
+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.Service;
+import org.onosproject.cluster.ClusterEvent;
+import org.onosproject.cluster.ClusterStore;
+import org.onosproject.cluster.ClusterStoreDelegate;
+import org.onosproject.cluster.ControllerNode;
+import org.onosproject.cluster.DefaultControllerNode;
+import org.onosproject.cluster.NodeId;
+import org.onosproject.store.hz.AbsentInvalidatingLoadingCache;
+import org.onosproject.store.hz.AbstractHazelcastStore;
+import org.onosproject.store.hz.OptionalCacheLoader;
+import org.onlab.packet.IpAddress;
+
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import static com.google.common.cache.CacheBuilder.newBuilder;
+import static org.onosproject.cluster.ClusterEvent.Type.INSTANCE_ACTIVATED;
+import static org.onosproject.cluster.ClusterEvent.Type.INSTANCE_DEACTIVATED;
+import static org.onosproject.cluster.ControllerNode.State;
+
+/**
+ * Distributed, Hazelcast-based implementation of the cluster nodes store.
+ */
+@Component(immediate = true, enabled = false)
+@Service
+public class HazelcastClusterStore
+ extends AbstractHazelcastStore<ClusterEvent, ClusterStoreDelegate>
+ implements ClusterStore {
+
+ private IMap<byte[], byte[]> rawNodes;
+ private LoadingCache<NodeId, Optional<DefaultControllerNode>> nodes;
+
+ private String listenerId;
+ private final MembershipListener listener = new InternalMembershipListener();
+ private final Map<NodeId, State> states = new ConcurrentHashMap<>();
+
+ private String nodesListenerId;
+
+ @Override
+ @Activate
+ public void activate() {
+ super.activate();
+ listenerId = theInstance.getCluster().addMembershipListener(listener);
+
+ rawNodes = theInstance.getMap("nodes");
+ OptionalCacheLoader<NodeId, DefaultControllerNode> nodeLoader
+ = new OptionalCacheLoader<>(serializer, rawNodes);
+ nodes = new AbsentInvalidatingLoadingCache<>(newBuilder().build(nodeLoader));
+ nodesListenerId = rawNodes.addEntryListener(new RemoteCacheEventHandler<>(nodes), true);
+
+ loadClusterNodes();
+
+ log.info("Started");
+ }
+
+ // Loads the initial set of cluster nodes
+ private void loadClusterNodes() {
+ for (Member member : theInstance.getCluster().getMembers()) {
+ addNode(node(member));
+ }
+ }
+
+ @Deactivate
+ public void deactivate() {
+ rawNodes.removeEntryListener(nodesListenerId);
+ theInstance.getCluster().removeMembershipListener(listenerId);
+ log.info("Stopped");
+ }
+
+ @Override
+ public ControllerNode getLocalNode() {
+ return node(theInstance.getCluster().getLocalMember());
+ }
+
+ @Override
+ public Set<ControllerNode> getNodes() {
+ ImmutableSet.Builder<ControllerNode> builder = ImmutableSet.builder();
+ for (Optional<DefaultControllerNode> optional : nodes.asMap().values()) {
+ builder.add(optional.get());
+ }
+ return builder.build();
+ }
+
+ @Override
+ public ControllerNode getNode(NodeId nodeId) {
+ return nodes.getUnchecked(nodeId).orNull();
+ }
+
+ @Override
+ public State getState(NodeId nodeId) {
+ State state = states.get(nodeId);
+ return state == null ? State.INACTIVE : state;
+ }
+
+ @Override
+ public ControllerNode addNode(NodeId nodeId, IpAddress ip, int tcpPort) {
+ return addNode(new DefaultControllerNode(nodeId, ip, tcpPort));
+ }
+
+ @Override
+ public void removeNode(NodeId nodeId) {
+ synchronized (this) {
+ rawNodes.remove(serialize(nodeId));
+ nodes.invalidate(nodeId);
+ }
+ }
+
+ // Adds a new node based on the specified member
+ private synchronized ControllerNode addNode(DefaultControllerNode node) {
+ rawNodes.put(serialize(node.id()), serialize(node));
+ nodes.put(node.id(), Optional.of(node));
+ states.put(node.id(), State.ACTIVE);
+ return node;
+ }
+
+ // Creates a controller node descriptor from the Hazelcast member.
+ private DefaultControllerNode node(Member member) {
+ IpAddress ip = memberAddress(member);
+ return new DefaultControllerNode(new NodeId(ip.toString()), ip);
+ }
+
+ private IpAddress memberAddress(Member member) {
+ return IpAddress.valueOf(member.getSocketAddress().getAddress());
+ }
+
+ // Interceptor for membership events.
+ private class InternalMembershipListener implements MembershipListener {
+ @Override
+ public void memberAdded(MembershipEvent membershipEvent) {
+ log.info("Member {} added", membershipEvent.getMember());
+ ControllerNode node = addNode(node(membershipEvent.getMember()));
+ notifyDelegate(new ClusterEvent(INSTANCE_ACTIVATED, node));
+ }
+
+ @Override
+ public void memberRemoved(MembershipEvent membershipEvent) {
+ log.info("Member {} removed", membershipEvent.getMember());
+ NodeId nodeId = new NodeId(memberAddress(membershipEvent.getMember()).toString());
+ states.put(nodeId, State.INACTIVE);
+ notifyDelegate(new ClusterEvent(INSTANCE_DEACTIVATED, getNode(nodeId)));
+ }
+
+ @Override
+ public void memberAttributeChanged(MemberAttributeEvent memberAttributeEvent) {
+ log.info("Member {} attribute {} changed to {}",
+ memberAttributeEvent.getMember(),
+ memberAttributeEvent.getKey(),
+ memberAttributeEvent.getValue());
+ }
+ }
+}