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package com.frameworkset.util;
import com.frameworkset.daemon.FileBean;
import com.frameworkset.daemon.ResourceNameSpace;
import com.frameworkset.daemon.WrapperResourceInit;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.net.URL;
import java.util.*;
import java.util.Map.Entry;
/**
* Title:
*
* Description:
*
* Copyright: Copyright (c) 2005
*
* Company:
*
* @author biaoping.yin
* @version 1.0
*/
public class DaemonThread extends java.lang.Thread
{
private static Logger log = LoggerFactory.getLogger(DaemonThread.class);
// private long lastModifiedTime;
// private long oldModifiedTime;
private long refresh_interval = 5000;
private Map files = new HashMap();
private Map triggers = new HashMap();
// private ResourceInitial init;
private boolean started = false;
private boolean stopped = false;
public DaemonThread(String fileName,ResourceInitial init)
{
this(fileName,5000,init);
}
public DaemonThread(long refresh_interval,String name)
{
super(name);
this.refresh_interval = refresh_interval;
this.setDaemon(true);
}
public void addFile(String fileName,ResourceInitial init)
{
if(this.stopped || fileName == null)
return;
try {
File file = new File(fileName);
if (!file.exists()) {
URL confURL = ResourceInitial.class.getClassLoader().getResource(fileName);
if (confURL != null)
file = new File(confURL.getPath());
}
addFile(file, fileName, init);
}
catch (Exception e){
if (log.isErrorEnabled())
log.error("addFile file to monitor Thread failed,fileName:"+fileName ,e);
}
// this.files.add(new FileBean(file,init));
// log.debug("Add file " + file.getAbsolutePath() + " to damon thread that moniting changed files.");
}
private FileBean containFile(File file,String fileName)
{
if(this.files == null || files.size() <= 0 )
return null;
if(file == null)
return null;
FileBean f = files.get(file.getAbsolutePath());
if(f == null)
return null;
if(f.isRemoveflag())
f.setRemoveflag(false);
return f;
}
/**
*
* @param file 触发文件更新的文件句柄
* @param fileName 实际的文件，有可能和file不一致（file可能为jar或者其他合法的压缩包文件，包含多个需要刷新的file）
* @param init
*/
public void addFile(File file,String fileName,ResourceInitial init)
{
if(this.stopped || file == null )
return;
if( !file.exists())
{
if(log.isInfoEnabled() )
log.info(fileName+"@"+file.getAbsolutePath()+" 对应的文件不存在，忽略修改检测.");
return;
}
try {
synchronized (lock) {
FileBean f = this.containFile(file, fileName);
if (f == null) {
this.files.put(file.getAbsolutePath(), new FileBean(file, new WrapperResourceInit(init, fileName)));
// log.debug(file.getAbsolutePath() + " has been monitored,ignore this operation.");
// return;
} else {
f.addResourceInit(new WrapperResourceInit(init, fileName));
}
if (log.isInfoEnabled())
log.info("Add file " + fileName + "@" + file.getAbsolutePath() + " to monitor thread that moniting changed files.");
}
}
catch (Exception e){
if (log.isErrorEnabled())
log.error("Add file " + fileName + "@" + file.getAbsolutePath() + " to monitor thread that moniting changed files failed:",e);
}
}
/**
* determine the OS name
*
* @return The name of the OS
*/
public static final String getOS() {
String osname = System.getProperty("os.name");
return osname;
}
public static Boolean isWindow = null;
/**
* @return True if the OS is a Windows derivate.
*/
public static final boolean isWindows() {
if(isWindow != null)
return isWindow.booleanValue();
synchronized (DaemonThread.class){
if(isWindow != null)
return isWindow.booleanValue();
isWindow = getOS().startsWith("Windows");
}
return isWindow;
}
/**
*
* @param file 触发文件更新的文件句柄
* @param init
*/
public void addFile(File file,ResourceInitial init)
{
if(this.stopped || file == null)
return;
String fileName = file.getAbsolutePath();
addFile( file, fileName, init);
}
public void addFile(URL fileURL,String fileName,ResourceInitial init)
{
if(this.stopped )
return;
if(fileName == null){
log.info("Ignore addFile Null file to change monitor Thread:fileName:"+fileName + ",fileURL:"+fileURL);
return;
}
try {
File file = new File(fileName);
if (!file.exists()) {
if (fileURL != null) {
String fileUrl = fileURL.getPath();
if (log.isInfoEnabled()) {
log.info("Use out package file URL to monitor: " + fileUrl);
}
file = new File(fileUrl);
if (!file.exists()) {
int idx = fileUrl.indexOf("!");
if (idx > 0) {
fileUrl = fileUrl.substring(0, idx);
idx = fileUrl.indexOf("file:");
if (idx == -1) {
idx = fileUrl.indexOf("file:");
}
if (idx >= 0) {
if (isWindows()) {
fileUrl = fileUrl.substring(idx + 6);
} else {
fileUrl = fileUrl.substring(idx + 5);
}
}
file = new File(fileUrl);
}
}
}
}
addFile(file, fileName, init);
}
catch (Exception e){
if (log.isErrorEnabled())
log.error("addFile file to monitor Thread failed,fileName:"+fileName + ",fileURL:"+fileURL ,e);
}
}
public void addResource(ResourceNameSpace resourceNameSpace,ResourceInitial init)
{
if(this.stopped )
return;
if(resourceNameSpace == null){
log.info("Ignore addResource Null ResourceNameSpace to monitor change Thread.");
return;
}
try {
synchronized (lock) {
ResourceNameSpace f = this.triggers.get(resourceNameSpace.getNameSpace());
if (f == null) {
this.triggers.put(resourceNameSpace.getNameSpace(), resourceNameSpace);
f = resourceNameSpace;
}
f.addResourceInit(new WrapperResourceInit(init, resourceNameSpace.getNameSpace()));
if (log.isInfoEnabled())
log.info("Add ResourceInitial[" + resourceNameSpace.getNameSpace() + "] to thread that moniting file change .");
}
}
catch (Exception e){
if (log.isErrorEnabled())
log.error("Add ResourceInitial[" + resourceNameSpace.getNameSpace() + "] to thread that moniting file change failed:",e);
}
}
public void removeFile(String filepath)
{
File file = new File(filepath);
if(!file.exists())
{
URL confURL = ResourceInitial.class.getClassLoader().getResource(filepath);
if(confURL != null)
file = new File(confURL.getPath() );
}
removeFile( file);
}
public void removeFile(File file)
{
synchronized(lock)
{
if(this.files == null || files.size() <= 0 )
return ;
if(file == null)
return ;
FileBean f = files.get(file.getAbsolutePath());
if(f != null)
{
f.setRemoveflag(true);
if(log.isInfoEnabled())
log.info("marked file " + file.getAbsolutePath() + " to be removed from monitor thread that moniting changed files.");
}
}
}
public DaemonThread(String fileName,long refresh_interval,ResourceInitial init)
{
super(fileName);
this.refresh_interval = refresh_interval > 0 ?refresh_interval:10000;
File file = new File(fileName);
if(!file.exists())
{
URL confURL = ResourceInitial.class.getClassLoader().getResource(fileName);
if(confURL != null)
file = new File(confURL.getPath() );
}
// this.oldModifiedTime = file.lastModified();
// this.init = init;
if(!file.exists())
{
if(log.isInfoEnabled())
log.info(file.getAbsolutePath()+" 对应的文件不存在，忽略修改检测.");
return;
}
this.files.put(file.getAbsolutePath(),new FileBean(file,new WrapperResourceInit(init,file.getAbsolutePath())));
if(log.isInfoEnabled())
log.info("Add file " + file.getAbsolutePath() + " to monitor thread that moniting changed files.");
this.setDaemon(true);
}
private Object lock = new Object();
public DaemonThread(File file,ResourceInitial init)
{
// this.oldModifiedTime = file.lastModified();
// this.file = file;
// this.init = init;
// this.files.add(new FileBean(file,init));
this.files.put(file.getAbsolutePath(),new FileBean(file,new WrapperResourceInit(init,file.getAbsolutePath())));
if(log.isInfoEnabled())
log.info("Add file " + file.getAbsolutePath() + " to monitor thread that moniting changed files.");
this.setDaemon(true);
}
public boolean started()
{
return started;
}
private void triggerFiles(){
List changedFiles = new ArrayList();
synchronized(lock)
{
//modified by biaoping.yin on 2015.03.09:忽略扫描异常，如果出现异常继续扫描
try
{
Iterator> entries = files.entrySet().iterator();
while(entries.hasNext())
{
if(stopped)
break;
Entry entry = entries.next();
FileBean f = entry.getValue();
if(f.isRemoveflag())
continue;
try
{
if(log.isTraceEnabled()){
String filePath = f.getFile() != null?f.getFile().getAbsolutePath():"";
log.trace("Thread["+this.getName()+"] Check file["+filePath+"] .");
}
if(f.checkChanged()){
if(log.isInfoEnabled()){
String filePath = f.getFile() != null?f.getFile().getAbsolutePath():"";
log.info("Thread["+this.getName()+"] Monitor file["+filePath+"] changed.");
}
changedFiles.add(f);
}
}
catch(Exception e)
{
if(log.isInfoEnabled()) {
String filePath = f.getFile() != null ? f.getFile().getAbsolutePath() : "null";
String tname = this.getName() != null ? this.getName() : "null";
log.info("Thread[" + tname + "] Monitor changed file[" + filePath + "] exception:", e);
}
}
}
}
catch(Exception e)
{
if(log.isInfoEnabled())
log.info("Thread["+this.getName()+"] Monitor changed files exception:",e);
}
}
if(changedFiles.size() > 0)
{
for(FileBean f:changedFiles)
{
if(stopped)
break;
try
{
f.reinit();
}
catch(Exception e)
{
if(log.isInfoEnabled()) {
String filePath = f.getFile() != null ? f.getFile().getAbsolutePath() : "null";
String tname = this.getName() != null ? this.getName() : "null";
log.info("Thread[" + tname + "] Reinit Monitor changed file[" + filePath + "] exception:", e);
}
}
}
}
}
private void triggerResources(){
List changedFiles = new ArrayList();
synchronized(lock)
{
//modified by biaoping.yin on 2015.03.09:忽略扫描异常，如果出现异常继续扫描
try
{
Iterator> entries = triggers.entrySet().iterator();
while(entries.hasNext())
{
if(stopped)
break;
Entry entry = entries.next();
ResourceNameSpace f = entry.getValue();
String filePath = f.getNameSpace();
try
{
if(log.isTraceEnabled()){
log.trace("Thread["+this.getName()+"] Check resource["+filePath+"] .");
}
if(f.checkChanged()){
if(log.isInfoEnabled()){
log.info("Thread["+this.getName()+"] resource["+filePath+"] changed.");
}
changedFiles.add(f);
}
}
catch(Exception e)
{
if(log.isInfoEnabled()) {
String tname = this.getName() != null ? this.getName() : "null";
log.info("Thread[" + tname + "] Monitor changed resource[" + filePath + "] exception:", e);
}
}
}
}
catch(Exception e)
{
if(log.isInfoEnabled())
log.info("Thread["+this.getName()+"] Monitor changed files exception:",e);
}
}
if(changedFiles.size() > 0)
{
for(ResourceNameSpace f:changedFiles)
{
if(stopped)
break;
String filePath = f.getNameSpace();
try
{
f.reinit();
}
catch(Exception e)
{
if(log.isInfoEnabled()) {
String tname = this.getName() != null ? this.getName() : "null";
log.info("Thread[" + tname + "] Reinit Monitor changed resource[" + filePath + "] exception:", e);
}
}
}
}
}
private boolean hasFiles(){
return files != null && files.size() > 0;
}
private boolean hasTriggers(){
return triggers != null && triggers.size() > 0;
}
public void run()
{
if(log.isInfoEnabled())
log.info("Start check files is changed or not.if some files is changed,the resources of these files will be refreshed use ResourceInit interface.");
started = true;
while(true)
{
if(stopped)
break;
//System.out.println("Check module file's last modified time.");
try {
sleep(refresh_interval);
} catch (InterruptedException ex) {
// notifyAll();
break;
}
if(!hasFiles() && !hasTriggers()){
if(log.isTraceEnabled()) {
String tname = this.getName() != null ? this.getName() : "null";
log.trace("Thread[" + tname + "] Ignore Monitor change resources : No resources to monitor.");
}
continue;
}
if(hasFiles())
triggerFiles();
if(hasTriggers()){
triggerResources();
}
}
}
public void stopped()
{
if(this.stopped)
return;
this.stopped = true;
synchronized(lock){
if(files != null)
{
files.clear();
// files = null;
}
if(triggers != null){
triggers.clear();
}
lock.notifyAll();
}
// synchronized(this)
// {
// this.notifyAll();
// }
//
}
}