| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You 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.apache.geode.internal.cache.partitioned.rebalance; |
| |
| import java.util.Set; |
| |
| import org.apache.geode.distributed.DistributedMember; |
| import org.apache.geode.distributed.DistributedSystem; |
| import org.apache.geode.distributed.internal.InternalDistributedSystem; |
| import org.apache.geode.distributed.internal.membership.InternalDistributedMember; |
| import org.apache.geode.internal.cache.partitioned.rebalance.model.Bucket; |
| import org.apache.geode.internal.cache.partitioned.rebalance.model.Member; |
| import org.apache.geode.internal.cache.partitioned.rebalance.model.Move; |
| import org.apache.geode.internal.cache.partitioned.rebalance.model.PartitionedRegionLoadModel; |
| import org.apache.geode.internal.cache.partitioned.rebalance.model.RefusalReason; |
| |
| public class ExplicitMoveDirector extends RebalanceDirectorAdapter { |
| |
| private PartitionedRegionLoadModel model; |
| private final int bucketId; |
| private final InternalDistributedMember source; |
| private final InternalDistributedMember target; |
| private final Object key; |
| private InternalDistributedSystem ds; |
| |
| |
| public ExplicitMoveDirector(Object key, int bucketId, DistributedMember source, |
| DistributedMember target, DistributedSystem distributedSystem) { |
| this.key = key; |
| this.bucketId = bucketId; |
| this.source = (InternalDistributedMember) source; |
| this.target = (InternalDistributedMember) target; |
| this.ds = (InternalDistributedSystem) distributedSystem; |
| } |
| |
| @Override |
| public void initialize(PartitionedRegionLoadModel model) { |
| this.model = model; |
| } |
| |
| @Override |
| public void membershipChanged(PartitionedRegionLoadModel model) { |
| initialize(model); |
| } |
| |
| @Override |
| public boolean nextStep() { |
| Bucket bucket = model.getBuckets()[bucketId]; |
| Member sourceMember = model.getMember(source); |
| Member targetMember = model.getMember(target); |
| if (sourceMember == null) { |
| throw new IllegalStateException( |
| String.format( |
| "Source member does not exist or is not a data store for the partitioned region %s: %s", |
| model.getName(), source)); |
| } |
| if (targetMember == null) { |
| throw new IllegalStateException( |
| String.format( |
| "Target member does not exist or is not a data store for the partitioned region %s: %s", |
| model.getName(), target)); |
| } |
| |
| if (bucket == null) { |
| throw new IllegalStateException("The bucket for key " + key + ", bucket " + bucketId |
| + ", region " + model.getName() + " does not exist"); |
| } |
| |
| if (!bucket.getMembersHosting().contains(sourceMember)) { |
| throw new IllegalStateException( |
| "The bucket for key " + key + ", bucket " + bucketId + ", region " + model.getName() |
| + " is not hosted by " + source + ". Members hosting: " + bucket.getMembersHosting()); |
| } |
| |
| RefusalReason reason = |
| targetMember.willAcceptBucket(bucket, sourceMember, model.enforceUniqueZones()); |
| if (reason.willAccept()) { |
| if (!model.moveBucket(new Move(sourceMember, targetMember, bucket))) { |
| // Double check to see if the source or destination have left the DS |
| Set allMembers = ds.getDistributionManager().getDistributionManagerIdsIncludingAdmin(); |
| if (!allMembers.contains(sourceMember)) { |
| throw new IllegalStateException( |
| String.format( |
| "Source member does not exist or is not a data store for the partitioned region %s: %s", |
| model.getName(), source)); |
| } |
| if (!allMembers.contains(targetMember)) { |
| throw new IllegalStateException( |
| String.format( |
| "Target member does not exist or is not a data store for the partitioned region %s: %s", |
| model.getName(), target)); |
| } |
| throw new IllegalStateException( |
| "Unable to move bucket " + bucket + " from " + sourceMember + " to " + targetMember); |
| } |
| } else { |
| throw new IllegalStateException("Unable to move bucket for " + model.getName() + ". " |
| + reason.formatMessage(targetMember, bucket)); |
| } |
| |
| return false; |
| } |
| } |