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package com.frameworkset.daemon;
/**
* Copyright 2008 biaoping.yin
*
* Licensed 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.
*/
import com.frameworkset.util.ResourceInitial;
import com.frameworkset.util.UUIDResource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/**
*
Description:
*
* Copyright (c) 2018
* @Date 2020/1/22 10:41
* @author biaoping.yin
* @version 1.0
*/
public class FileBean {
private Logger log = LoggerFactory.getLogger(FileBean.class);
public FileBean(File file,
WrapperResourceInit init) {
super();
this.file = file;
this.inits = new ArrayList();
inits.add(init);
this.oldModifiedTime = file.lastModified();
}
private boolean removeflag = false;
private File file;
// private long lastModifiedTime;
private long oldModifiedTime;
private List inits;
/**
* @return the file
*/
public File getFile() {
return file;
}
/**
* @param file the file to set
*/
public void setFile(File file) {
this.file = file;
}
/**
* @return the oldModifiedTime
*/
public long getOldModifiedTime() {
return oldModifiedTime;
}
/**
* @param oldModifiedTime the oldModifiedTime to set
*/
public void setOldModifiedTime(long oldModifiedTime) {
this.oldModifiedTime = oldModifiedTime;
}
public boolean checkChanged()
{
if(file == null)
return false;
boolean exist = file.exists();
if(!exist)
{
//init.destroy();
return false;
}
long lastModifiedTime = file.lastModified();
if(this.oldModifiedTime != lastModifiedTime)
{
return true;
}
else
{
return false;
}
}
/**
* 1 resolved java.util.ConcurrentModificationException by biaoping.yin on 2015.03.09
*/
public synchronized void reinit()
{
//System.out.println("Reload changed file：" + file.getAbsolutePath());
if(log.isInfoEnabled()) {
log.info("Reload resources in changed file：" + file.getAbsolutePath());
}
long lastModifiedTime = file.lastModified();
if(lastModifiedTime == this.oldModifiedTime)
return;
else {
//检查文件是否已经读写完毕，通过文件间隔1秒检测lastModified时间搓来判断（不一定准确）
// long length = file.length();
long last = lastModifiedTime;
do {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
break;
}
lastModifiedTime = file.lastModified();
if (last == lastModifiedTime) {
// lastModifiedTime = file.lastModified();
break;
} else {
last = lastModifiedTime;
}
}
while(true);
}
this.oldModifiedTime = lastModifiedTime;
for(int i = 0; inits != null && i < this.inits.size(); i++)
{
WrapperResourceInit init = inits.get(i);
try {
init.reinit();
if(log.isInfoEnabled()) {
log.info("Reload changed resource file " + init.getUUID()+"@"+ file.getAbsolutePath() + " sucessed.");
}
} catch (Exception e) {
if(log.isErrorEnabled())
log.error("Reload changed resource file " + init.getUUID()+"@"+ file.getAbsolutePath() + " failed:" ,e);
}
}
}
//end 1 resolved java.util.ConcurrentModificationException by biaoping.yin on 2015.03.09
public boolean isRemoveflag() {
return removeflag;
}
public void setRemoveflag(boolean removeflag) {
this.removeflag = removeflag;
}
public void addResourceInit(WrapperResourceInit init) {
if(!this.contain(init))
this.inits.add(init);
}
private boolean contain(ResourceInitial init)
{
if(init instanceof UUIDResource)
{
String uuid = ((UUIDResource)init).getUUID();
for(int i = 0; i < this.inits.size(); i ++)
{
ResourceInitial initOld = this.inits.get(i);
if(initOld instanceof UUIDResource)
{
if(((UUIDResource)initOld).getUUID().equals(uuid))
return true;
}
}
return false;
}
else {
return true;//兼容旧版本,没有实现UUIDResource接口的初始化资源初始化接口只允许存在一个ResourceInitial
}
}
}