| /* |
| * 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.trigger; |
| |
| import org.apache.iotdb.common.rpc.thrift.TDataNodeLocation; |
| import org.apache.iotdb.commons.utils.TestOnly; |
| import org.apache.iotdb.confignode.rpc.thrift.TTriggerState; |
| |
| import org.apache.tsfile.utils.ReadWriteIOUtils; |
| |
| import javax.annotation.concurrent.NotThreadSafe; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.stream.Collectors; |
| |
| /** This Class used to save the information of Triggers and implements methods of manipulate it. */ |
| @NotThreadSafe |
| public class TriggerTable { |
| private final Map<String, TriggerInformation> triggerTable; |
| |
| public TriggerTable() { |
| triggerTable = new ConcurrentHashMap<>(); |
| } |
| |
| public TriggerTable(Map<String, TriggerInformation> triggerTable) { |
| this.triggerTable = triggerTable; |
| } |
| // for createTrigger |
| public void addTriggerInformation(String triggerName, TriggerInformation triggerInformation) { |
| triggerTable.put(triggerName, triggerInformation); |
| } |
| |
| public TriggerInformation getTriggerInformation(String triggerName) { |
| return triggerTable.get(triggerName); |
| } |
| |
| public TriggerInformation removeTriggerInformation(String triggerName) { |
| return triggerTable.remove(triggerName); |
| } |
| |
| // for dropTrigger |
| public void deleteTriggerInformation(String triggerName) { |
| triggerTable.remove(triggerName); |
| } |
| |
| public boolean containsTrigger(String triggerName) { |
| return triggerTable.containsKey(triggerName); |
| } |
| |
| public void setTriggerState(String triggerName, TTriggerState triggerState) { |
| triggerTable.get(triggerName).setTriggerState(triggerState); |
| } |
| |
| // for getTriggerTable |
| public List<TriggerInformation> getAllTriggerInformation() { |
| return new ArrayList<>(triggerTable.values()); |
| } |
| |
| public List<TriggerInformation> getAllStatefulTriggerInformation() { |
| return triggerTable.values().stream() |
| .filter(TriggerInformation::isStateful) |
| .collect(Collectors.toList()); |
| } |
| |
| public TDataNodeLocation getTriggerLocation(String triggerName) { |
| TriggerInformation triggerInformation = triggerTable.get(triggerName); |
| return triggerInformation == null ? null : triggerInformation.getDataNodeLocation(); |
| } |
| |
| public List<String> getTransferringTriggers() { |
| return triggerTable.values().stream() |
| .filter( |
| triggerInformation -> |
| triggerInformation.getTriggerState() == TTriggerState.TRANSFERRING) |
| .map(TriggerInformation::getTriggerName) |
| .collect(Collectors.toList()); |
| } |
| |
| // update stateful trigger to TRANSFERRING which dataNodeLocation is in transferNodes |
| public void updateTriggersOnTransferNodes(List<TDataNodeLocation> transferNodes) { |
| Set<TDataNodeLocation> dataNodeLocationSet = new HashSet<>(transferNodes); |
| triggerTable |
| .values() |
| .forEach( |
| triggerInformation -> { |
| if (triggerInformation.isStateful() |
| && dataNodeLocationSet.contains(triggerInformation.getDataNodeLocation())) { |
| triggerInformation.setTriggerState(TTriggerState.TRANSFERRING); |
| } |
| }); |
| } |
| |
| public void updateTriggerLocation(String triggerName, TDataNodeLocation dataNodeLocation) { |
| TriggerInformation triggerInformation = triggerTable.get(triggerName); |
| // triggerInformation will not be null here |
| triggerInformation.setDataNodeLocation(dataNodeLocation); |
| triggerTable.put(triggerName, triggerInformation); |
| } |
| |
| public boolean isEmpty() { |
| return triggerTable.isEmpty(); |
| } |
| |
| @TestOnly |
| public Map<String, TriggerInformation> getTable() { |
| return triggerTable; |
| } |
| |
| public void serializeTriggerTable(OutputStream outputStream) throws IOException { |
| ReadWriteIOUtils.write(triggerTable.size(), outputStream); |
| for (TriggerInformation triggerInformation : triggerTable.values()) { |
| ReadWriteIOUtils.write(triggerInformation.serialize(), outputStream); |
| } |
| } |
| |
| public void deserializeTriggerTable(InputStream inputStream) throws IOException { |
| int size = ReadWriteIOUtils.readInt(inputStream); |
| while (size > 0) { |
| TriggerInformation triggerInformation = TriggerInformation.deserialize(inputStream); |
| triggerTable.put(triggerInformation.getTriggerName(), triggerInformation); |
| size--; |
| } |
| } |
| |
| public void clear() { |
| triggerTable.clear(); |
| } |
| } |