| /* |
| * 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.control; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import org.apache.geode.DataSerializer; |
| import org.apache.geode.internal.cache.PartitionedRegion; |
| import org.apache.geode.internal.serialization.DataSerializableFixedID; |
| import org.apache.geode.internal.serialization.DeserializationContext; |
| import org.apache.geode.internal.serialization.KnownVersion; |
| import org.apache.geode.internal.serialization.SerializationContext; |
| import org.apache.geode.management.internal.operation.RegionRedundancyStatusImpl; |
| |
| /** |
| * result object produced by the servers. These need to be transferred to the locators |
| * via functions so they need to be DataSerializable |
| */ |
| public class SerializableRegionRedundancyStatusImpl extends |
| RegionRedundancyStatusImpl |
| implements DataSerializableFixedID { |
| /** |
| * Default constructor used for serialization |
| */ |
| public SerializableRegionRedundancyStatusImpl() { |
| status = RedundancyStatus.NOT_SATISFIED; |
| } |
| |
| public SerializableRegionRedundancyStatusImpl(PartitionedRegion region) { |
| regionName = region.getName(); |
| configuredRedundancy = region.getRedundantCopies(); |
| actualRedundancy = calculateLowestRedundancy(region); |
| status = determineStatus(configuredRedundancy, actualRedundancy); |
| } |
| |
| /** |
| * Calculates the lowest redundancy for any bucket in the region. |
| * |
| * @param region The region for which the lowest redundancy should be calculated. |
| * @return The redundancy of the least redundant bucket in the region. |
| */ |
| int calculateLowestRedundancy(PartitionedRegion region) { |
| int numBuckets = region.getPartitionAttributes().getTotalNumBuckets(); |
| int minRedundancy = Integer.MAX_VALUE; |
| for (int i = 0; i < numBuckets; i++) { |
| int bucketRedundancy = region.getRegionAdvisor().getBucketRedundancy(i); |
| // Only consider redundancy for buckets that exist. Buckets that have not been created yet |
| // have a redundancy value of -1 |
| if (bucketRedundancy != -1 && bucketRedundancy < minRedundancy) { |
| minRedundancy = bucketRedundancy; |
| } |
| } |
| return minRedundancy == Integer.MAX_VALUE ? 0 : minRedundancy; |
| } |
| |
| /** |
| * Determines the {@link RedundancyStatus} for the region. If redundancy is not configured (i.e. |
| * configured redundancy = 0), this always returns {@link RedundancyStatus#SATISFIED}. |
| * |
| * @param desiredRedundancy The configured redundancy of the region. |
| * @param actualRedundancy The actual redundancy of the region. |
| * @return The {@link RedundancyStatus} for the region. |
| */ |
| private RedundancyStatus determineStatus(int desiredRedundancy, int actualRedundancy) { |
| boolean zeroRedundancy = desiredRedundancy == 0; |
| if (actualRedundancy == 0) { |
| return zeroRedundancy ? RedundancyStatus.SATISFIED : RedundancyStatus.NO_REDUNDANT_COPIES; |
| } |
| return desiredRedundancy == actualRedundancy ? RedundancyStatus.SATISFIED |
| : RedundancyStatus.NOT_SATISFIED; |
| } |
| |
| @Override |
| public String toString() { |
| return String.format(OUTPUT_STRING, regionName, status.name(), configuredRedundancy, |
| actualRedundancy); |
| } |
| |
| @Override |
| public int getDSFID() { |
| return REGION_REDUNDANCY_STATUS; |
| } |
| |
| @Override |
| public void toData(DataOutput out, SerializationContext context) throws IOException { |
| DataSerializer.writeString(regionName, out); |
| DataSerializer.writeEnum(status, out); |
| out.writeInt(configuredRedundancy); |
| out.writeInt(actualRedundancy); |
| } |
| |
| @Override |
| public void fromData(DataInput in, DeserializationContext context) |
| throws IOException, ClassNotFoundException { |
| regionName = DataSerializer.readString(in); |
| status = DataSerializer.readEnum(RedundancyStatus.class, in); |
| configuredRedundancy = in.readInt(); |
| actualRedundancy = in.readInt(); |
| } |
| |
| @Override |
| public KnownVersion[] getSerializationVersions() { |
| return null; |
| } |
| } |