| /* |
| * 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.commons.pipe.plugin.builtin.BuiltinPipePlugin; |
| import org.apache.iotdb.commons.pipe.plugin.service.PipePluginClassLoader; |
| import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| public abstract class PipePluginMetaKeeper { |
| |
| protected final Map<String, PipePluginMeta> pipePluginNameToMetaMap = new ConcurrentHashMap<>(); |
| protected final Map<String, Class<?>> pipePluginNameToClassMap; |
| |
| public PipePluginMetaKeeper() { |
| pipePluginNameToClassMap = new ConcurrentHashMap<>(); |
| |
| loadBuiltInPlugins(); |
| } |
| |
| protected void loadBuiltInPlugins() { |
| for (final BuiltinPipePlugin builtinPipePlugin : BuiltinPipePlugin.values()) { |
| addPipePluginMeta( |
| builtinPipePlugin.getPipePluginName(), |
| new PipePluginMeta( |
| builtinPipePlugin.getPipePluginName(), builtinPipePlugin.getClassName())); |
| addPluginAndClass( |
| builtinPipePlugin.getPipePluginName(), builtinPipePlugin.getPipePluginClass()); |
| } |
| } |
| |
| public void addPipePluginMeta(String pluginName, PipePluginMeta pipePluginMeta) { |
| pipePluginNameToMetaMap.put(pluginName.toUpperCase(), pipePluginMeta); |
| } |
| |
| public void removePipePluginMeta(String pluginName) { |
| pipePluginNameToMetaMap.remove(pluginName.toUpperCase()); |
| } |
| |
| public PipePluginMeta getPipePluginMeta(String pluginName) { |
| return pipePluginNameToMetaMap.get(pluginName.toUpperCase()); |
| } |
| |
| public PipePluginMeta[] getAllPipePluginMeta() { |
| return pipePluginNameToMetaMap.values().toArray(new PipePluginMeta[0]); |
| } |
| |
| public boolean containsPipePlugin(String pluginName) { |
| return pipePluginNameToMetaMap.containsKey(pluginName.toUpperCase()); |
| } |
| |
| public void addPluginAndClass(String pluginName, Class<?> clazz) { |
| pipePluginNameToClassMap.put(pluginName.toUpperCase(), clazz); |
| } |
| |
| public Class<?> getPluginClass(String pluginName) { |
| return pipePluginNameToClassMap.get(pluginName.toUpperCase()); |
| } |
| |
| public void removePluginClass(String pluginName) { |
| pipePluginNameToClassMap.remove(pluginName.toUpperCase()); |
| } |
| |
| public void updatePluginClass(PipePluginMeta pipePluginMeta, PipePluginClassLoader classLoader) |
| throws ClassNotFoundException { |
| final Class<?> functionClass = Class.forName(pipePluginMeta.getClassName(), true, classLoader); |
| pipePluginNameToClassMap.put(pipePluginMeta.getPluginName().toUpperCase(), functionClass); |
| } |
| |
| protected void processTakeSnapshot(OutputStream outputStream) throws IOException { |
| ReadWriteIOUtils.write( |
| (int) |
| pipePluginNameToMetaMap.values().stream() |
| .filter(pipePluginMeta -> !pipePluginMeta.isBuiltin()) |
| .count(), |
| outputStream); |
| |
| for (PipePluginMeta pipePluginMeta : pipePluginNameToMetaMap.values()) { |
| if (pipePluginMeta.isBuiltin()) { |
| continue; |
| } |
| ReadWriteIOUtils.write(pipePluginMeta.serialize(), outputStream); |
| } |
| } |
| |
| protected void processLoadSnapshot(InputStream inputStream) throws IOException { |
| pipePluginNameToMetaMap.forEach( |
| (pluginName, pluginMeta) -> { |
| if (!pluginMeta.isBuiltin()) { |
| pipePluginNameToMetaMap.remove(pluginName); |
| } |
| }); |
| |
| final int pipePluginMetaSize = ReadWriteIOUtils.readInt(inputStream); |
| for (int i = 0; i < pipePluginMetaSize; i++) { |
| final PipePluginMeta pipePluginMeta = PipePluginMeta.deserialize(inputStream); |
| addPipePluginMeta(pipePluginMeta.getPluginName().toUpperCase(), pipePluginMeta); |
| } |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| PipePluginMetaKeeper that = (PipePluginMetaKeeper) o; |
| return pipePluginNameToMetaMap.equals(that.pipePluginNameToMetaMap); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(pipePluginNameToMetaMap); |
| } |
| } |