| /* |
| * 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.confignode.persistence; |
| |
| import org.apache.iotdb.common.rpc.thrift.TSStatus; |
| import org.apache.iotdb.commons.snapshot.SnapshotProcessor; |
| import org.apache.iotdb.confignode.consensus.request.write.confignode.UpdateClusterIdPlan; |
| import org.apache.iotdb.rpc.RpcUtils; |
| import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils; |
| |
| import org.apache.thrift.TException; |
| import org.apache.thrift.transport.TIOStreamTransport; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.util.UUID; |
| |
| public class ClusterInfo implements SnapshotProcessor { |
| |
| private static final Logger LOGGER = LoggerFactory.getLogger(ClusterInfo.class); |
| |
| private String clusterId = null; |
| |
| private static final String SNAPSHOT_FILENAME = "cluster_info.bin"; |
| |
| public String getClusterId() { |
| return clusterId; |
| } |
| |
| public TSStatus updateClusterId(UpdateClusterIdPlan updateClusterIdPlan) { |
| this.clusterId = updateClusterIdPlan.getClusterId(); |
| LOGGER.info("clusterID has been generated: {}", clusterId); |
| return RpcUtils.SUCCESS_STATUS; |
| } |
| |
| @Override |
| public boolean processTakeSnapshot(File snapshotDir) throws TException, IOException { |
| File snapshotFile = new File(snapshotDir, SNAPSHOT_FILENAME); |
| if (snapshotFile.exists() && snapshotFile.isFile()) { |
| LOGGER.error( |
| "Failed to take snapshot, because snapshot file [{}] is already exist.", |
| snapshotFile.getAbsolutePath()); |
| return false; |
| } |
| |
| File tmpFile = new File(snapshotFile.getAbsolutePath() + "-" + UUID.randomUUID()); |
| |
| try (FileOutputStream fileOutputStream = new FileOutputStream(tmpFile); |
| TIOStreamTransport tioStreamTransport = new TIOStreamTransport(fileOutputStream)) { |
| |
| ReadWriteIOUtils.write(clusterId, fileOutputStream); |
| |
| tioStreamTransport.flush(); |
| fileOutputStream.getFD().sync(); |
| tioStreamTransport.close(); |
| return tmpFile.renameTo(snapshotFile); |
| } |
| } |
| |
| @Override |
| public void processLoadSnapshot(File snapshotDir) throws TException, IOException { |
| File snapshotFile = new File(snapshotDir, SNAPSHOT_FILENAME); |
| if (!snapshotFile.exists() || !snapshotFile.isFile()) { |
| LOGGER.error( |
| "Failed to load snapshot,snapshot file [{}] is not exist.", |
| snapshotFile.getAbsolutePath()); |
| return; |
| } |
| |
| try (FileInputStream fileInputStream = new FileInputStream(snapshotFile)) { |
| clusterId = ReadWriteIOUtils.readString(fileInputStream); |
| } |
| |
| LOGGER.info("clusterID has been recovered from snapshot: {}", clusterId); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| ClusterInfo clusterInfo = (ClusterInfo) o; |
| return clusterId.equals(clusterInfo.getClusterId()); |
| } |
| } |