| /* |
| * 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.iotdb.confignode.manager.load.balancer; |
| |
| import org.apache.iotdb.common.rpc.thrift.TSeriesPartitionSlot; |
| import org.apache.iotdb.common.rpc.thrift.TTimePartitionSlot; |
| import org.apache.iotdb.commons.partition.DataPartitionTable; |
| import org.apache.iotdb.commons.partition.SchemaPartitionTable; |
| import org.apache.iotdb.confignode.exception.NotAvailableRegionGroupException; |
| import org.apache.iotdb.confignode.manager.IManager; |
| import org.apache.iotdb.confignode.manager.load.balancer.partition.GreedyPartitionAllocator; |
| import org.apache.iotdb.confignode.manager.load.balancer.partition.IPartitionAllocator; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * The SeriesPartitionSlotBalancer provides interfaces to generate optimal Partition allocation and |
| * migration plans |
| */ |
| public class PartitionBalancer { |
| |
| private final IManager configManager; |
| |
| public PartitionBalancer(IManager configManager) { |
| this.configManager = configManager; |
| } |
| |
| /** |
| * Allocate SchemaPartitions |
| * |
| * @param unassignedSchemaPartitionSlotsMap SchemaPartitionSlots that should be assigned |
| * @return Map<StorageGroupName, SchemaPartitionTable>, the allocating result |
| */ |
| public Map<String, SchemaPartitionTable> allocateSchemaPartition( |
| Map<String, List<TSeriesPartitionSlot>> unassignedSchemaPartitionSlotsMap) |
| throws NotAvailableRegionGroupException { |
| return genPartitionAllocator().allocateSchemaPartition(unassignedSchemaPartitionSlotsMap); |
| } |
| |
| /** |
| * Allocate DataPartitions |
| * |
| * @param unassignedDataPartitionSlotsMap DataPartitionSlots that should be assigned |
| * @return Map<StorageGroupName, DataPartitionTable>, the allocating result |
| */ |
| public Map<String, DataPartitionTable> allocateDataPartition( |
| Map<String, Map<TSeriesPartitionSlot, List<TTimePartitionSlot>>> |
| unassignedDataPartitionSlotsMap) |
| throws NotAvailableRegionGroupException { |
| return genPartitionAllocator().allocateDataPartition(unassignedDataPartitionSlotsMap); |
| } |
| |
| private IPartitionAllocator genPartitionAllocator() { |
| // TODO: The type of PartitionAllocator should be configurable |
| return new GreedyPartitionAllocator(configManager); |
| } |
| } |