| /* |
| * 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.receiver; |
| |
| import org.apache.iotdb.rpc.RpcUtils; |
| import org.apache.iotdb.rpc.TSStatusCode; |
| import org.apache.iotdb.service.rpc.thrift.TPipeTransferReq; |
| import org.apache.iotdb.service.rpc.thrift.TPipeTransferResp; |
| |
| import org.apache.commons.io.FileUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.function.Supplier; |
| |
| public abstract class IoTDBReceiverAgent { |
| |
| private static final Logger LOGGER = LoggerFactory.getLogger(IoTDBReceiverAgent.class); |
| |
| protected ThreadLocal<IoTDBReceiver> receiverThreadLocal = new ThreadLocal<>(); |
| |
| protected static final Map<Byte, Supplier<IoTDBReceiver>> RECEIVER_CONSTRUCTORS = new HashMap<>(); |
| |
| protected abstract void initConstructors(); |
| |
| protected IoTDBReceiverAgent() { |
| initConstructors(); |
| } |
| |
| public final TPipeTransferResp receive(TPipeTransferReq req) { |
| final byte reqVersion = req.getVersion(); |
| if (RECEIVER_CONSTRUCTORS.containsKey(reqVersion)) { |
| return getReceiver(reqVersion).receive(req); |
| } else { |
| return new TPipeTransferResp( |
| RpcUtils.getStatus( |
| TSStatusCode.PIPE_VERSION_ERROR, |
| String.format("Unsupported pipe version %d", reqVersion))); |
| } |
| } |
| |
| protected final IoTDBReceiver getReceiver(byte reqVersion) { |
| if (receiverThreadLocal.get() == null) { |
| return setAndGetReceiver(reqVersion); |
| } |
| |
| final byte receiverThreadLocalVersion = receiverThreadLocal.get().getVersion().getVersion(); |
| if (receiverThreadLocalVersion != reqVersion) { |
| LOGGER.warn( |
| "The receiver version {} is different from the sender version {}," |
| + " the receiver will be reset to the sender version.", |
| receiverThreadLocalVersion, |
| reqVersion); |
| receiverThreadLocal.get().handleExit(); |
| receiverThreadLocal.remove(); |
| return setAndGetReceiver(reqVersion); |
| } |
| |
| return receiverThreadLocal.get(); |
| } |
| |
| private IoTDBReceiver setAndGetReceiver(byte reqVersion) { |
| if (RECEIVER_CONSTRUCTORS.containsKey(reqVersion)) { |
| receiverThreadLocal.set(RECEIVER_CONSTRUCTORS.get(reqVersion).get()); |
| } else { |
| throw new UnsupportedOperationException( |
| String.format("Unsupported pipe version %d", reqVersion)); |
| } |
| return receiverThreadLocal.get(); |
| } |
| |
| public final void handleClientExit() { |
| final IoTDBReceiver receiver = receiverThreadLocal.get(); |
| if (receiver != null) { |
| receiver.handleExit(); |
| receiverThreadLocal.remove(); |
| } |
| } |
| |
| public static void cleanPipeReceiverDir(File receiverFileDir) { |
| try { |
| FileUtils.deleteDirectory(receiverFileDir); |
| LOGGER.info("Clean pipe receiver dir {} successfully.", receiverFileDir); |
| } catch (Exception e) { |
| LOGGER.warn("Clean pipe receiver dir {} failed.", receiverFileDir, e); |
| } |
| |
| try { |
| FileUtils.forceMkdir(receiverFileDir); |
| LOGGER.info("Create pipe receiver dir {} successfully.", receiverFileDir); |
| } catch (IOException e) { |
| LOGGER.warn("Create pipe receiver dir {} failed.", receiverFileDir, e); |
| } |
| } |
| } |