| /* |
| * 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.commons.pipe.plugin.meta; |
| |
| import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| public class ConfigNodePipePluginMetaKeeper extends PipePluginMetaKeeper { |
| |
| protected final Map<String, String> jarNameToMd5Map; |
| protected final Map<String, Integer> jarNameToReferenceCountMap; |
| |
| public ConfigNodePipePluginMetaKeeper() { |
| super(); |
| |
| jarNameToMd5Map = new HashMap<>(); |
| jarNameToReferenceCountMap = new HashMap<>(); |
| } |
| |
| public synchronized boolean containsJar(String jarName) { |
| return jarNameToMd5Map.containsKey(jarName); |
| } |
| |
| public synchronized boolean jarNameExistsAndMatchesMd5(String jarName, String md5) { |
| return jarNameToMd5Map.containsKey(jarName) && jarNameToMd5Map.get(jarName).equals(md5); |
| } |
| |
| public synchronized void addJarNameAndMd5(String jarName, String md5) { |
| if (jarNameToReferenceCountMap.containsKey(jarName)) { |
| jarNameToReferenceCountMap.put(jarName, jarNameToReferenceCountMap.get(jarName) + 1); |
| } else { |
| jarNameToReferenceCountMap.put(jarName, 1); |
| jarNameToMd5Map.put(jarName, md5); |
| } |
| } |
| |
| public synchronized void removeJarNameAndMd5IfPossible(String jarName) { |
| if (jarNameToReferenceCountMap.containsKey(jarName)) { |
| int count = jarNameToReferenceCountMap.get(jarName); |
| if (count == 1) { |
| jarNameToReferenceCountMap.remove(jarName); |
| jarNameToMd5Map.remove(jarName); |
| } else { |
| jarNameToReferenceCountMap.put(jarName, count - 1); |
| } |
| } |
| } |
| |
| @Override |
| public void processTakeSnapshot(OutputStream outputStream) throws IOException { |
| ReadWriteIOUtils.write(jarNameToMd5Map.size(), outputStream); |
| for (Map.Entry<String, String> entry : jarNameToMd5Map.entrySet()) { |
| ReadWriteIOUtils.write(entry.getKey(), outputStream); |
| ReadWriteIOUtils.write(entry.getValue(), outputStream); |
| ReadWriteIOUtils.write(jarNameToReferenceCountMap.get(entry.getKey()), outputStream); |
| } |
| |
| super.processTakeSnapshot(outputStream); |
| } |
| |
| @Override |
| public void processLoadSnapshot(InputStream inputStream) throws IOException { |
| jarNameToMd5Map.clear(); |
| jarNameToReferenceCountMap.clear(); |
| |
| final int jarSize = ReadWriteIOUtils.readInt(inputStream); |
| for (int i = 0; i < jarSize; i++) { |
| final String jarName = ReadWriteIOUtils.readString(inputStream); |
| final String md5 = ReadWriteIOUtils.readString(inputStream); |
| final int count = ReadWriteIOUtils.readInt(inputStream); |
| jarNameToMd5Map.put(jarName, md5); |
| jarNameToReferenceCountMap.put(jarName, count); |
| } |
| |
| super.processLoadSnapshot(inputStream); |
| } |
| } |