| /** |
| * 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.pulsar.common.util; |
| |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.nio.file.attribute.FileTime; |
| import lombok.Getter; |
| import lombok.ToString; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Class working with file's modified time. |
| */ |
| @ToString |
| public class FileModifiedTimeUpdater { |
| @Getter |
| String fileName; |
| @Getter |
| FileTime lastModifiedTime; |
| |
| public FileModifiedTimeUpdater(String fileName) { |
| this.fileName = fileName; |
| this.lastModifiedTime = updateLastModifiedTime(); |
| } |
| |
| private FileTime updateLastModifiedTime() { |
| if (fileName != null) { |
| Path p = Paths.get(fileName); |
| try { |
| return Files.getLastModifiedTime(p); |
| } catch (IOException e) { |
| LOG.error("Unable to fetch lastModified time for file {}: ", fileName, e); |
| } |
| } |
| return null; |
| } |
| |
| public boolean checkAndRefresh() { |
| FileTime newLastModifiedTime = updateLastModifiedTime(); |
| if (newLastModifiedTime != null && !newLastModifiedTime.equals(lastModifiedTime)) { |
| this.lastModifiedTime = newLastModifiedTime; |
| return true; |
| } |
| return false; |
| } |
| |
| private static final Logger LOG = LoggerFactory.getLogger(FileModifiedTimeUpdater.class); |
| } |