| /* |
| * 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.hugegraph.backend.store.raft.compress; |
| |
| import org.apache.hugegraph.config.CoreOptions; |
| import org.apache.hugegraph.config.HugeConfig; |
| |
| public class CompressStrategyManager { |
| |
| private static byte DEFAULT_STRATEGY = 1; |
| public static final byte SERIAL_STRATEGY = 1; |
| public static final byte PARALLEL_STRATEGY = 2; |
| public static final byte MAX_STRATEGY = 5; |
| private static CompressStrategy[] compressStrategies = new CompressStrategy[MAX_STRATEGY]; |
| |
| static { |
| addCompressStrategy(SERIAL_STRATEGY, new SerialCompressStrategy()); |
| } |
| |
| private CompressStrategyManager() { |
| } |
| |
| public static void addCompressStrategy(int index, CompressStrategy compressStrategy) { |
| if (compressStrategies.length <= index) { |
| CompressStrategy[] newCompressStrategies = new CompressStrategy[index + MAX_STRATEGY]; |
| System.arraycopy(compressStrategies, 0, newCompressStrategies, 0, |
| compressStrategies.length); |
| compressStrategies = newCompressStrategies; |
| } |
| compressStrategies[index] = compressStrategy; |
| } |
| |
| public static CompressStrategy getDefault() { |
| return compressStrategies[DEFAULT_STRATEGY]; |
| } |
| |
| public static void init(final HugeConfig config) { |
| if (!config.get(CoreOptions.RAFT_SNAPSHOT_PARALLEL_COMPRESS)) { |
| return; |
| } |
| // add parallel compress strategy |
| if (compressStrategies[PARALLEL_STRATEGY] == null) { |
| CompressStrategy compressStrategy = new ParallelCompressStrategy( |
| config.get(CoreOptions.RAFT_SNAPSHOT_COMPRESS_THREADS), |
| config.get(CoreOptions.RAFT_SNAPSHOT_DECOMPRESS_THREADS)); |
| CompressStrategyManager.addCompressStrategy( |
| CompressStrategyManager.PARALLEL_STRATEGY, compressStrategy); |
| DEFAULT_STRATEGY = PARALLEL_STRATEGY; |
| } |
| } |
| } |