| /* |
| * Copyright 2016 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.primitives.impl; |
| |
| import io.atomix.catalyst.serializer.Serializer; |
| import io.atomix.catalyst.transport.Address; |
| import io.atomix.resource.ResourceType; |
| |
| import java.io.File; |
| import java.util.Collection; |
| import java.util.Optional; |
| import java.util.Set; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.stream.Collectors; |
| |
| import org.onosproject.cluster.ClusterService; |
| import org.onosproject.cluster.ControllerNode; |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.cluster.Partition; |
| import org.onosproject.cluster.PartitionId; |
| import org.onosproject.store.cluster.messaging.MessagingService; |
| import org.onosproject.store.primitives.resources.impl.AtomixConsistentMap; |
| import org.onosproject.store.primitives.resources.impl.AtomixLeaderElector; |
| import org.onosproject.store.service.PartitionInfo; |
| |
| import com.google.common.collect.Collections2; |
| import com.google.common.collect.ImmutableSet; |
| |
| /** |
| * Storage partition. |
| */ |
| public class StoragePartition implements Managed<StoragePartition> { |
| |
| private final AtomicBoolean isOpened = new AtomicBoolean(false); |
| private final Serializer serializer; |
| private final MessagingService messagingService; |
| private final ClusterService clusterService; |
| private final File logFolder; |
| private Partition partition; |
| private NodeId localNodeId; |
| private StoragePartitionServer server; |
| private StoragePartitionClient client; |
| |
| public static final Collection<ResourceType> RESOURCE_TYPES = ImmutableSet.of( |
| new ResourceType(AtomixLeaderElector.class), |
| new ResourceType(AtomixConsistentMap.class)); |
| |
| public StoragePartition(Partition partition, |
| MessagingService messagingService, |
| ClusterService clusterService, |
| Serializer serializer, |
| File logFolder) { |
| this.partition = partition; |
| this.messagingService = messagingService; |
| this.clusterService = clusterService; |
| this.localNodeId = clusterService.getLocalNode().id(); |
| this.serializer = serializer; |
| this.logFolder = logFolder; |
| } |
| |
| /** |
| * Returns the partition client instance. |
| * @return client |
| */ |
| public StoragePartitionClient client() { |
| return client; |
| } |
| |
| @Override |
| public CompletableFuture<Void> open() { |
| if (partition.getMembers().contains(localNodeId)) { |
| openServer(); |
| } |
| return openClient().thenAccept(v -> isOpened.set(true)) |
| .thenApply(v -> null); |
| } |
| |
| @Override |
| public CompletableFuture<Void> close() { |
| // We do not explicitly close the server and instead let the cluster |
| // deal with this as an unclean exit. |
| return closeClient(); |
| } |
| |
| /** |
| * Returns the identifier of the {@link Partition partition} associated with this instance. |
| * @return partition identifier |
| */ |
| public PartitionId getId() { |
| return partition.getId(); |
| } |
| |
| /** |
| * Returns the identifiers of partition members. |
| * @return partition member instance ids |
| */ |
| public Collection<NodeId> getMembers() { |
| return partition.getMembers(); |
| } |
| |
| /** |
| * Returns the {@link Address addresses} of partition members. |
| * @return partition member addresses |
| */ |
| public Collection<Address> getMemberAddresses() { |
| return Collections2.transform(partition.getMembers(), this::toAddress); |
| } |
| |
| /** |
| * Attempts to rejoin the partition. |
| * @return future that is completed after the operation is complete |
| */ |
| private CompletableFuture<Void> openServer() { |
| if (!partition.getMembers().contains(localNodeId) || server != null) { |
| return CompletableFuture.completedFuture(null); |
| } |
| StoragePartitionServer server = new StoragePartitionServer(toAddress(localNodeId), |
| this, |
| serializer, |
| () -> new CopycatTransport(CopycatTransport.Mode.SERVER, |
| partition.getId(), |
| messagingService), |
| logFolder); |
| return server.open().thenRun(() -> this.server = server); |
| } |
| |
| /** |
| * Attempts to join the partition as a new member. |
| * @return future that is completed after the operation is complete |
| */ |
| private CompletableFuture<Void> joinCluster() { |
| Set<NodeId> otherMembers = partition.getMembers() |
| .stream() |
| .filter(nodeId -> !nodeId.equals(localNodeId)) |
| .collect(Collectors.toSet()); |
| StoragePartitionServer server = new StoragePartitionServer(toAddress(localNodeId), |
| this, |
| serializer, |
| () -> new CopycatTransport(CopycatTransport.Mode.SERVER, |
| partition.getId(), |
| messagingService), |
| logFolder); |
| return server.join(Collections2.transform(otherMembers, this::toAddress)).thenRun(() -> this.server = server); |
| } |
| |
| private CompletableFuture<StoragePartitionClient> openClient() { |
| client = new StoragePartitionClient(this, |
| serializer, |
| new CopycatTransport(CopycatTransport.Mode.CLIENT, |
| partition.getId(), |
| messagingService)); |
| return client.open().thenApply(v -> client); |
| } |
| |
| /** |
| * Closes the partition server if it was previously opened. |
| * @return future that is completed when the operation completes |
| */ |
| public CompletableFuture<Void> leaveCluster() { |
| return server != null ? server.closeAndExit() : CompletableFuture.completedFuture(null); |
| } |
| |
| @Override |
| public boolean isOpen() { |
| return isOpened.get(); |
| } |
| |
| private CompletableFuture<Void> closeClient() { |
| if (client != null) { |
| return client.close(); |
| } |
| return CompletableFuture.completedFuture(null); |
| } |
| |
| private Address toAddress(NodeId nodeId) { |
| ControllerNode node = clusterService.getNode(nodeId); |
| return new Address(node.ip().toString(), node.tcpPort()); |
| } |
| |
| /** |
| * Returns the partition information if this partition is locally managed i.e. |
| * this node is a active member of the partition. |
| * @return partition info |
| */ |
| public Optional<PartitionInfo> info() { |
| return server != null && server.isOpen() ? Optional.of(server.info()) : Optional.empty(); |
| } |
| |
| public void onUpdate(Partition newValue) { |
| if (partition.getMembers().contains(localNodeId) && newValue.getMembers().contains(localNodeId)) { |
| return; |
| } |
| if (!partition.getMembers().contains(localNodeId) && !newValue.getMembers().contains(localNodeId)) { |
| return; |
| } |
| this.partition = newValue; |
| if (partition.getMembers().contains(localNodeId)) { |
| joinCluster(); |
| } else if (!partition.getMembers().contains(localNodeId)) { |
| leaveCluster(); |
| } |
| } |
| } |