jstorm-core/src/main/java/com/alibaba/jstorm/utils/OlderFileFilter.java

/**
 * 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 com.alibaba.jstorm.utils;

import java.io.File;
import java.io.FileFilter;

/**
 * filter the older file, skip the files' modify time which is less sec than now
 * 
 * @author lixin
 * 
 */
public class OlderFileFilter implements FileFilter {

    private int seconds;

    public OlderFileFilter(int seconds) {
        this.seconds = seconds;
    }

    @Override
    public boolean accept(File pathname) {

        long current_time = System.currentTimeMillis();

        return (pathname.lastModified() + seconds * 1000 <= current_time) ;
    }
    
    
    public static void main(String[] args) {
    	long current_time = System.currentTimeMillis();
    	String test = "test";
    	
    	
    	File file = new File(test);
    	file.delete();
    	file.mkdir();
    	file.setLastModified(current_time);
    	
    	JStormUtils.sleepMs(10 * 1000);

    	File newFile = new File(test);
    	System.out.println("modify time: " + newFile.lastModified() + ", raw:" + current_time);
    	
    }

}