tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 1 | package org.onlab.onos.store.cluster.impl; |
| 2 | |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 3 | import com.google.common.base.Optional; |
| 4 | import com.google.common.cache.LoadingCache; |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 5 | import com.google.common.collect.ImmutableSet; |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 6 | import com.hazelcast.core.IMap; |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 7 | import com.hazelcast.core.Member; |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 8 | import com.hazelcast.core.MemberAttributeEvent; |
| 9 | import com.hazelcast.core.MembershipEvent; |
| 10 | import com.hazelcast.core.MembershipListener; |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 11 | import org.apache.felix.scr.annotations.Activate; |
| 12 | import org.apache.felix.scr.annotations.Component; |
| 13 | import org.apache.felix.scr.annotations.Deactivate; |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 14 | import org.apache.felix.scr.annotations.Service; |
| 15 | import org.onlab.onos.cluster.ClusterStore; |
| 16 | import org.onlab.onos.cluster.ControllerNode; |
| 17 | import org.onlab.onos.cluster.DefaultControllerNode; |
| 18 | import org.onlab.onos.cluster.NodeId; |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 19 | import org.onlab.onos.store.impl.AbsentInvalidatingLoadingCache; |
| 20 | import org.onlab.onos.store.impl.AbstractDistributedStore; |
| 21 | import org.onlab.onos.store.impl.OptionalCacheLoader; |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 22 | import org.onlab.packet.IpPrefix; |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 23 | |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 24 | import java.util.Map; |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 25 | import java.util.Set; |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 26 | import java.util.concurrent.ConcurrentHashMap; |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 27 | |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 28 | import static com.google.common.cache.CacheBuilder.newBuilder; |
| 29 | import static org.onlab.onos.cluster.ControllerNode.State; |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 30 | |
| 31 | /** |
| 32 | * Distributed implementation of the cluster nodes store. |
| 33 | */ |
| 34 | @Component(immediate = true) |
| 35 | @Service |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 36 | public class DistributedClusterStore extends AbstractDistributedStore |
| 37 | implements ClusterStore { |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 38 | |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 39 | private IMap<byte[], byte[]> rawNodes; |
| 40 | private LoadingCache<NodeId, Optional<DefaultControllerNode>> nodes; |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 41 | |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 42 | private String listenerId; |
| 43 | private final MembershipListener listener = new InnerMembershipListener(); |
| 44 | private final Map<NodeId, State> states = new ConcurrentHashMap<>(); |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 45 | |
| 46 | @Activate |
| 47 | public void activate() { |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 48 | super.activate(); |
| 49 | listenerId = theInstance.getCluster().addMembershipListener(listener); |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 50 | |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 51 | rawNodes = theInstance.getMap("nodes"); |
| 52 | OptionalCacheLoader<NodeId, DefaultControllerNode> nodeLoader |
| 53 | = new OptionalCacheLoader<>(storeService, rawNodes); |
| 54 | nodes = new AbsentInvalidatingLoadingCache<>(newBuilder().build(nodeLoader)); |
| 55 | rawNodes.addEntryListener(new RemoteEventHandler<>(nodes), true); |
| 56 | |
| 57 | loadClusterNodes(); |
| 58 | |
| 59 | log.info("Started"); |
| 60 | } |
| 61 | |
| 62 | // Loads the initial set of cluster nodes |
| 63 | private void loadClusterNodes() { |
| 64 | for (Member member : theInstance.getCluster().getMembers()) { |
| 65 | addMember(member); |
| 66 | } |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | @Deactivate |
| 70 | public void deactivate() { |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 71 | theInstance.getCluster().removeMembershipListener(listenerId); |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 72 | log.info("Stopped"); |
| 73 | } |
| 74 | |
| 75 | @Override |
| 76 | public ControllerNode getLocalNode() { |
| 77 | return node(theInstance.getCluster().getLocalMember()); |
| 78 | } |
| 79 | |
| 80 | @Override |
| 81 | public Set<ControllerNode> getNodes() { |
| 82 | ImmutableSet.Builder<ControllerNode> builder = ImmutableSet.builder(); |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 83 | for (Optional<DefaultControllerNode> optional : nodes.asMap().values()) { |
| 84 | builder.add(optional.get()); |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 85 | } |
| 86 | return builder.build(); |
| 87 | } |
| 88 | |
| 89 | @Override |
| 90 | public ControllerNode getNode(NodeId nodeId) { |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 91 | return nodes.getUnchecked(nodeId).orNull(); |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 92 | } |
| 93 | |
| 94 | @Override |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 95 | public State getState(NodeId nodeId) { |
| 96 | State state = states.get(nodeId); |
| 97 | return state == null ? State.INACTIVE : state; |
| 98 | } |
| 99 | |
| 100 | @Override |
| 101 | public void removeNode(NodeId nodeId) { |
| 102 | synchronized (this) { |
| 103 | rawNodes.remove(serialize(nodeId)); |
| 104 | nodes.invalidate(nodeId); |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | // Adds a new node based on the specified member |
| 109 | private synchronized void addMember(Member member) { |
| 110 | DefaultControllerNode node = node(member); |
| 111 | rawNodes.put(serialize(node.id()), serialize(node)); |
| 112 | nodes.put(node.id(), Optional.of(node)); |
| 113 | states.put(node.id(), State.ACTIVE); |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 114 | } |
| 115 | |
| 116 | // Creates a controller node descriptor from the Hazelcast member. |
tom | b41d1ac | 2014-09-24 01:51:24 -0700 | [diff] [blame] | 117 | private DefaultControllerNode node(Member member) { |
| 118 | IpPrefix ip = memberAddress(member); |
| 119 | return new DefaultControllerNode(new NodeId(ip.toString()), ip); |
| 120 | } |
| 121 | |
| 122 | private IpPrefix memberAddress(Member member) { |
| 123 | byte[] address = member.getSocketAddress().getAddress().getAddress(); |
| 124 | return IpPrefix.valueOf(address); |
| 125 | } |
| 126 | |
| 127 | // Interceptor for membership events. |
| 128 | private class InnerMembershipListener implements MembershipListener { |
| 129 | @Override |
| 130 | public void memberAdded(MembershipEvent membershipEvent) { |
| 131 | log.info("Member {} added", membershipEvent.getMember()); |
| 132 | addMember(membershipEvent.getMember()); |
| 133 | } |
| 134 | |
| 135 | @Override |
| 136 | public void memberRemoved(MembershipEvent membershipEvent) { |
| 137 | log.info("Member {} removed", membershipEvent.getMember()); |
| 138 | states.put(new NodeId(memberAddress(membershipEvent.getMember()).toString()), |
| 139 | State.INACTIVE); |
| 140 | } |
| 141 | |
| 142 | @Override |
| 143 | public void memberAttributeChanged(MemberAttributeEvent memberAttributeEvent) { |
| 144 | log.info("Member {} attribute {} changed to {}", |
| 145 | memberAttributeEvent.getMember(), |
| 146 | memberAttributeEvent.getKey(), |
| 147 | memberAttributeEvent.getValue()); |
| 148 | } |
tom | 2d7c65f | 2014-09-23 01:09:35 -0700 | [diff] [blame] | 149 | } |
| 150 | } |