| /* |
| * 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.db.storageengine.dataregion.snapshot; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.FileReader; |
| import java.io.IOException; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| public class SnapshotLogAnalyzer { |
| private static final Logger LOGGER = LoggerFactory.getLogger(SnapshotLogAnalyzer.class); |
| private final File snapshotLogFile; |
| private final BufferedReader reader; |
| private String snapshotId; |
| private boolean complete; |
| private Set<String> fileInfoSet = new HashSet<>(); |
| |
| public SnapshotLogAnalyzer(File snapshotLogFile) throws IOException { |
| this.snapshotLogFile = snapshotLogFile; |
| this.reader = new BufferedReader(new FileReader(snapshotLogFile)); |
| this.analyze(); |
| } |
| |
| public void close() { |
| try { |
| reader.close(); |
| } catch (IOException e) { |
| LOGGER.error("Exception occurs when closing log analyzer", e); |
| } |
| } |
| |
| public String getSnapshotId() { |
| return snapshotId; |
| } |
| |
| /** |
| * Return the total num of file in this snapshot. |
| * |
| * @return |
| */ |
| public int getTotalFileCountInSnapshot() throws IOException { |
| return fileInfoSet.size(); |
| } |
| |
| public Set<String> getFileInfoSet() { |
| return fileInfoSet; |
| } |
| |
| private void analyze() throws IOException { |
| try { |
| snapshotId = reader.readLine(); |
| String line; |
| while ((line = reader.readLine()) != null && !line.equals(SnapshotLogger.END_FLAG)) { |
| fileInfoSet.add(line); |
| } |
| complete = line != null; |
| } finally { |
| reader.close(); |
| } |
| } |
| |
| public boolean isSnapshotComplete() throws IOException { |
| return complete; |
| } |
| } |