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cn.ucloud.ufile.util.JLog Maven / Gradle / Ivy
package cn.ucloud.ufile.util;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
/**
* @author: joshua
* @E-mail: [email protected]
* @date: 2018/11/9 14:20
*/
public class JLog {
private static volatile JLog mInstance;
private boolean isSaveLog = false;
public static boolean SHOW_TEST = false;
public static boolean SHOW_DEBUG = false;
public static boolean SHOW_VERBOSE = false;
public static boolean SHOW_INFO = true;
public static boolean SHOW_WARN = true;
public static boolean SHOW_ERROR = true;
private static final String LOG_POSITION_FORMAT = "[(%s:%s)#%s]: ";
private JLog() {
}
private static JLog getInstance() {
if (mInstance == null) {
synchronized (JLog.class) {
if (mInstance == null) {
mInstance = new JLog();
}
}
}
return mInstance;
}
public static void init(String basePath, int maxSaveDays, boolean isSaveLog) {
getInstance();
mInstance.isSaveLog = isSaveLog;
if (isSaveLog) {
LogFile.initBasePath(basePath, maxSaveDays);
}
}
private static String getLogPosition() {
StackTraceElement[] trace = new Throwable().fillInStackTrace().getStackTrace();
if (trace == null || trace.length < 3)
return "";
return String.format(LOG_POSITION_FORMAT, trace[2].getFileName(), trace[2].getLineNumber(),
trace[2].getMethodName());
}
public static void V(String TAG, String info) {
if (SHOW_VERBOSE)
System.out.println("VERBOSE-> " + TAG + ": " + getLogPosition() + info);
}
public static void D(String TAG, String info) {
if (SHOW_DEBUG)
System.out.println("DEBUG-> " + TAG + ": " + getLogPosition() + info);
}
public static void T(String TAG, String info) {
if (SHOW_TEST)
System.out.println("TEST-> " + TAG + ": " + getLogPosition() + info);
}
public static void I(String TAG, String info) {
if (SHOW_INFO)
System.out.println("INFO-> " + TAG + ": " + info);
}
public static void W(String TAG, String info) {
if (SHOW_WARN)
System.out.println("WARN-> " + TAG + ": " + getLogPosition() + info);
}
public static void E(String TAG, String info) {
if (SHOW_ERROR)
System.out.println("ERROR-> " + TAG + ": " + getLogPosition() + info);
}
public static void V(String TAG, String info, Throwable throwable) {
if (SHOW_VERBOSE)
System.out.println("VERBOSE-> " + TAG + ": " + getLogPosition() + info + "\n" + throwable);
}
public static void D(String TAG, String info, Throwable throwable) {
if (SHOW_DEBUG)
System.out.println("DEBUG-> " + TAG + ": " + getLogPosition() + info + "\n" + throwable);
}
public static void T(String TAG, String info, Throwable throwable) {
if (SHOW_TEST)
System.out.println("TEST-> " + TAG + ": " + getLogPosition() + info + "\n" + throwable);
}
public static void I(String TAG, String info, Throwable throwable) {
if (SHOW_INFO)
System.out.println("INFO-> " + TAG + ": " + info + "\n" + throwable);
}
public static void W(String TAG, String info, Throwable throwable) {
if (SHOW_WARN)
System.out.println("WARN-> " + TAG + ": " + getLogPosition() + info + "\n" + throwable);
}
public static void E(String TAG, String info, Throwable throwable) {
if (SHOW_ERROR)
System.out.println("ERROR-> " + TAG + ": " + getLogPosition() + info + "\n" + throwable);
}
public static void saveLog(String TAG, String info) {
if (mInstance != null && mInstance.isSaveLog) {
info = getLogPosition() + " " + info;
if (SHOW_DEBUG)
System.out.println("SAVE-> " + TAG + ": " + info);
LogFile.writeLog(TAG + ": " + info);
}
}
public static void saveLog(String TAG, String info, Throwable e) {
if (mInstance != null && mInstance.isSaveLog) {
info = getLogPosition() + " " + info;
if (e != null)
info += "\n" + e;
if (SHOW_ERROR)
System.out.println("SAVE-> " + TAG + ": " + info + "\n" + e);
LogFile.writeLog(TAG + ": " + info);
}
}
public static class LogFile {
private static final String TAG = "LogFile";
private static final String LOG_FILE_SUFFIX = ".log";
private static String sLogBasePath;
/**
* 读写文件的线程池，单线程模型
*/
private static ExecutorService sExecutorService;
static {
sExecutorService = Executors.newSingleThreadExecutor();
}
/**
* 设置Log存放位置，同时删除超过存放时长的Log
*
* @param basePath
*/
public static void initBasePath(String basePath, int maxSaveDays) {
sLogBasePath = basePath;
if (!new File(basePath).exists()) {
new File(basePath).mkdirs();
}
delOldFiles(new File(basePath), maxSaveDays);
}
/**
* 删除文件夹下所有的 N 天前创建的文件
* 注意: 由于拿不到文件的创建时间，这里暂且拿最后修改时间比较
*
* @param dir
* @param days
*/
public static void delOldFiles(File dir, int days) {
int daysMillis = days * 24 * 60 * 60 * 1000;
if (dir.exists()) {
File[] files = dir.listFiles();
if (files != null) {
for (int i = 0; i < files.length; i++) {
if (files[i].isFile() && System.currentTimeMillis() - files[i].lastModified() > daysMillis) {
files[i].delete();
}
}
}
}
}
/**
* 把文本写入文件中
*
* @param file 目录文件
* @param content 待写内容
* @param isOverride 写入模式，true - 覆盖，false - 追加
*/
public static void write(final File file, final String content, final boolean isOverride) {
sExecutorService.execute(new Runnable() {
@Override
public void run() {
FileOutputStream fos = null;
try {
boolean isExist = file.exists();
fos = new FileOutputStream(file, !(!isExist || isOverride));
fos.write(content.getBytes("UTF-8"));
} catch (IOException e) {
System.out.println(TAG + ": " + e);
} finally {
if (fos != null) {
try {
fos.close();
} catch (IOException e) {
System.out.println(TAG + ": " + e);
}
}
}
}
});
}
public static void writeLog(String content) {
content = content.replaceFirst("]", "] \n");
write(getLogFile(), "\n[" + getFormattedSecond() + "]" + content + "\n\n", false);
}
/**
* 拿到最新的Log文件
*
* @return
*/
public static File getLogFile() {
File dir = new File(sLogBasePath);
if (!dir.exists()) {
dir.mkdirs();
}
File logFile = new File(dir, getFormattedDay() + LOG_FILE_SUFFIX);
if (!logFile.exists()) {
try {
logFile.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
}
return logFile;
}
//==================================== TimeUtil =============================================//
public static final String FORMATTER_DAY = "yy_MM_dd";
public static final String FORMATTER_SECOND = "yy-MM-dd HH:mm:ss";
public static SimpleDateFormat sSecondFormat = new SimpleDateFormat(FORMATTER_SECOND, Locale.CHINA);
public static String getFormattedDay() {
return new SimpleDateFormat(FORMATTER_DAY, Locale.CHINA).format(new Date());
}
public static String getFormattedSecond() {
return sSecondFormat.format(new Date());
}
}
}
