| /* |
| * Copyright 2014-present 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.cluster.impl; |
| |
| import com.google.common.collect.Sets; |
| |
| 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.apache.karaf.system.SystemService; |
| import org.joda.time.DateTime; |
| import org.onlab.packet.IpAddress; |
| import org.onlab.util.Tools; |
| import org.onosproject.cluster.ClusterAdminService; |
| import org.onosproject.cluster.ClusterEvent; |
| import org.onosproject.cluster.ClusterEventListener; |
| import org.onosproject.cluster.ClusterMetadata; |
| import org.onosproject.cluster.ClusterMetadataAdminService; |
| import org.onosproject.cluster.ClusterMetadataDiff; |
| import org.onosproject.cluster.ClusterMetadataEvent; |
| import org.onosproject.cluster.ClusterMetadataEventListener; |
| import org.onosproject.cluster.ClusterMetadataService; |
| import org.onosproject.cluster.ClusterService; |
| import org.onosproject.cluster.ClusterStore; |
| import org.onosproject.cluster.ClusterStoreDelegate; |
| import org.onosproject.cluster.ControllerNode; |
| import org.onosproject.cluster.DefaultPartition; |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.cluster.Partition; |
| import org.onosproject.cluster.PartitionId; |
| import org.onosproject.event.AbstractListenerManager; |
| import org.slf4j.Logger; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static org.onosproject.security.AppGuard.checkPermission; |
| import static org.onosproject.security.AppPermission.Type.CLUSTER_READ; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Implementation of the cluster service. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class ClusterManager |
| extends AbstractListenerManager<ClusterEvent, ClusterEventListener> |
| implements ClusterService, ClusterAdminService { |
| |
| public static final String INSTANCE_ID_NULL = "Instance ID cannot be null"; |
| private static final int DEFAULT_PARTITION_SIZE = 3; |
| private final Logger log = getLogger(getClass()); |
| |
| private ClusterStoreDelegate delegate = new InternalStoreDelegate(); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ClusterMetadataService clusterMetadataService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ClusterMetadataAdminService clusterMetadataAdminService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected ClusterStore store; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY) |
| protected SystemService systemService; |
| |
| private final AtomicReference<ClusterMetadata> currentMetadata = new AtomicReference<>(); |
| private final InternalClusterMetadataListener metadataListener = new InternalClusterMetadataListener(); |
| |
| @Activate |
| public void activate() { |
| store.setDelegate(delegate); |
| eventDispatcher.addSink(ClusterEvent.class, listenerRegistry); |
| clusterMetadataService.addListener(metadataListener); |
| processMetadata(clusterMetadataService.getClusterMetadata()); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| clusterMetadataService.removeListener(metadataListener); |
| store.unsetDelegate(delegate); |
| eventDispatcher.removeSink(ClusterEvent.class); |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public ControllerNode getLocalNode() { |
| checkPermission(CLUSTER_READ); |
| return store.getLocalNode(); |
| } |
| |
| @Override |
| public Set<ControllerNode> getNodes() { |
| checkPermission(CLUSTER_READ); |
| return store.getNodes(); |
| } |
| |
| @Override |
| public ControllerNode getNode(NodeId nodeId) { |
| checkPermission(CLUSTER_READ); |
| checkNotNull(nodeId, INSTANCE_ID_NULL); |
| return store.getNode(nodeId); |
| } |
| |
| @Override |
| public ControllerNode.State getState(NodeId nodeId) { |
| checkPermission(CLUSTER_READ); |
| checkNotNull(nodeId, INSTANCE_ID_NULL); |
| return store.getState(nodeId); |
| } |
| |
| @Override |
| public void markFullyStarted(boolean started) { |
| store.markFullyStarted(started); |
| } |
| |
| @Override |
| public DateTime getLastUpdated(NodeId nodeId) { |
| checkPermission(CLUSTER_READ); |
| return store.getLastUpdated(nodeId); |
| } |
| |
| @Override |
| public void formCluster(Set<ControllerNode> nodes) { |
| formCluster(nodes, DEFAULT_PARTITION_SIZE); |
| } |
| |
| @Override |
| public void formCluster(Set<ControllerNode> nodes, int partitionSize) { |
| checkNotNull(nodes, "Nodes cannot be null"); |
| checkArgument(!nodes.isEmpty(), "Nodes cannot be empty"); |
| |
| ClusterMetadata metadata = new ClusterMetadata("default", nodes, buildDefaultPartitions(nodes, partitionSize)); |
| clusterMetadataAdminService.setClusterMetadata(metadata); |
| try { |
| log.warn("Shutting down container for cluster reconfiguration!"); |
| // Clean up persistent state associated with previous cluster configuration. |
| Tools.removeDirectory(System.getProperty("karaf.data") + "/partitions"); |
| systemService.reboot("now", SystemService.Swipe.NONE); |
| } catch (Exception e) { |
| log.error("Unable to reboot container", e); |
| } |
| } |
| |
| @Override |
| public ControllerNode addNode(NodeId nodeId, IpAddress ip, int tcpPort) { |
| checkNotNull(nodeId, INSTANCE_ID_NULL); |
| checkNotNull(ip, "IP address cannot be null"); |
| checkArgument(tcpPort > 5000, "TCP port must be > 5000"); |
| return store.addNode(nodeId, ip, tcpPort); |
| } |
| |
| @Override |
| public void removeNode(NodeId nodeId) { |
| checkNotNull(nodeId, INSTANCE_ID_NULL); |
| store.removeNode(nodeId); |
| } |
| |
| // Store delegate to re-post events emitted from the store. |
| private class InternalStoreDelegate implements ClusterStoreDelegate { |
| @Override |
| public void notify(ClusterEvent event) { |
| post(event); |
| } |
| } |
| |
| private static Set<Partition> buildDefaultPartitions(Collection<ControllerNode> nodes, int partitionSize) { |
| List<ControllerNode> sorted = new ArrayList<>(nodes); |
| Collections.sort(sorted, (o1, o2) -> o1.id().toString().compareTo(o2.id().toString())); |
| Set<Partition> partitions = Sets.newHashSet(); |
| // add partitions |
| int length = nodes.size(); |
| int count = Math.min(partitionSize, length); |
| for (int i = 0; i < length; i++) { |
| int index = i; |
| Set<NodeId> set = new HashSet<>(count); |
| for (int j = 0; j < count; j++) { |
| set.add(sorted.get((i + j) % length).id()); |
| } |
| partitions.add(new DefaultPartition(PartitionId.from((index + 1)), set)); |
| } |
| return partitions; |
| } |
| |
| /** |
| * Processes metadata by adding and removing nodes from the cluster. |
| */ |
| private synchronized void processMetadata(ClusterMetadata metadata) { |
| try { |
| ClusterMetadataDiff examiner = |
| new ClusterMetadataDiff(currentMetadata.get(), metadata); |
| examiner.nodesAdded().forEach(node -> addNode(node.id(), node.ip(), node.tcpPort())); |
| examiner.nodesRemoved().forEach(this::removeNode); |
| } finally { |
| currentMetadata.set(metadata); |
| } |
| } |
| |
| private class InternalClusterMetadataListener implements ClusterMetadataEventListener { |
| @Override |
| public void event(ClusterMetadataEvent event) { |
| processMetadata(event.subject()); |
| } |
| } |
| } |