| /* |
| * 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.List; |
| |
| import org.apache.logging.log4j.Logger; |
| |
| import org.apache.geode.distributed.internal.membership.InternalDistributedMember; |
| import org.apache.geode.internal.Assert; |
| import org.apache.geode.internal.cache.FixedPartitionAttributesImpl; |
| import org.apache.geode.internal.cache.PartitionedRegion; |
| 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.logging.internal.log4j.api.LogService; |
| |
| /** |
| * A director to move primaries to improve the load balance of a fixed partition region. This is |
| * most commonly used as an FPRDirector |
| * |
| */ |
| public class MovePrimariesFPR extends RebalanceDirectorAdapter { |
| private static final Logger logger = LogService.getLogger(); |
| |
| private PartitionedRegionLoadModel model; |
| |
| @Override |
| public void initialize(PartitionedRegionLoadModel model) { |
| this.model = model; |
| |
| } |
| |
| @Override |
| public void membershipChanged(PartitionedRegionLoadModel model) { |
| initialize(model); |
| |
| } |
| |
| @Override |
| public boolean nextStep() { |
| makeFPRPrimaryForThisNode(); |
| return false; |
| } |
| |
| /** |
| * Move all primary from other to this |
| */ |
| private void makeFPRPrimaryForThisNode() { |
| PartitionedRegion partitionedRegion = model.getPartitionedRegion(); |
| List<FixedPartitionAttributesImpl> FPAs = partitionedRegion.getFixedPartitionAttributesImpl(); |
| InternalDistributedMember targetId = partitionedRegion.getDistributionManager().getId(); |
| Member target = model.getMember(targetId); |
| for (Bucket bucket : model.getBuckets()) { |
| if (bucket != null) { |
| for (FixedPartitionAttributesImpl fpa : FPAs) { |
| if (fpa.hasBucket(bucket.getId()) && fpa.isPrimary()) { |
| Member source = bucket.getPrimary(); |
| if (source != target) { |
| // HACK: In case we don't know who is Primary at this time |
| // we just set source as target too for stat purposes |
| |
| source = (source == null || source == model.INVALID_MEMBER) ? target : source; |
| if (logger.isDebugEnabled()) { |
| logger.debug( |
| "PRLM#movePrimariesForFPR: For Bucket#{}, moving primary from source {} to target {}", |
| bucket.getId(), bucket.getPrimary(), target); |
| } |
| |
| boolean successfulMove = model.movePrimary(new Move(source, target, bucket)); |
| // We have to move the primary otherwise there is some problem! |
| Assert.assertTrue(successfulMove, |
| " Fixed partitioned region not able to move the primary!"); |
| if (successfulMove) { |
| if (logger.isDebugEnabled()) { |
| logger.debug( |
| "PRLM#movePrimariesForFPR: For Bucket#{}, moved primary from source {} to target {}", |
| bucket.getId(), bucket.getPrimary(), target); |
| } |
| |
| bucket.setPrimary(target, bucket.getPrimaryLoad()); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |