scouter.agent.Logger Maven / Gradle / Ivy
/*
* Copyright 2015 the original author or authors.
* @https://github.com/scouter-project/scouter
*
* 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 scouter.agent;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import scouter.lang.conf.ConfObserver;
import scouter.util.CompareUtil;
import scouter.util.DateUtil;
import scouter.util.FileUtil;
import scouter.util.StringLongLinkedMap;
import scouter.util.ThreadUtil;
public class Logger {
private static StringLongLinkedMap lastLog = new StringLongLinkedMap().setMax(1000);
public static void info(String msg) {
println("INFO", msg);
}
public static void println(Object message) {
println(DateUtil.datetime(System.currentTimeMillis()) + " " + message);
}
public static void println(String id, Object message) {
if (checkOk(id, 0) == false) {
return;
}
println(DateUtil.datetime(System.currentTimeMillis()) + " [" + id + "] " + message);
}
public static void println(String id, int sec, Object message) {
if (checkOk(id, sec) == false) {
return;
}
println(DateUtil.datetime(System.currentTimeMillis()) + " [" + id + "] " + message);
}
public static void println(String id, int sec, String message, Throwable t) {
if (checkOk(id, sec) == false) {
return;
}
println(DateUtil.datetime(System.currentTimeMillis()) + " [" + id + "] " + message);
println(ThreadUtil.getStackTrace(t));
}
public static String getCallStack(Throwable t) {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
try {
t.printStackTrace(pw);
return sw.toString();
} finally {
pw.close();
}
}
private static boolean checkOk(String id, int sec) {
if (Configure.getInstance().mgr_log_ignore_ids.hasKey(id))
return false;
if (sec > 0) {
long last = lastLog.get(id);
long now = System.currentTimeMillis();
if (now < last + sec * 1000)
return false;
lastLog.put(id, now);
}
return true;
}
public static PrintWriter pw = null;
private static long lastDataUnit = 0;
private static String lastDir = ".";
private static boolean lastFileRotation = true;
private static void println(String msg) {
try {
if (pw != null) {
pw.println(msg);
pw.flush();
return;
}
openFile();
if (pw == null) {
System.out.println(msg);
} else {
pw.println(msg);
pw.flush();
}
} catch (Exception e) {
pw = (PrintWriter) FileUtil.close(pw);
System.out.println(msg);
}
}
private static Runnable proc = new Runnable() {
public void run() {
long last = System.currentTimeMillis();
while (true) {
long now = System.currentTimeMillis();
if (now > last + DateUtil.MILLIS_PER_HOUR) {
last = now;
clearOldLog();
}
if (lastDataUnit != DateUtil.getDateUnit()) {
pw = (PrintWriter) FileUtil.close(pw);
lastDataUnit = DateUtil.getDateUnit();
}
ThreadUtil.sleep(5000);
}
}
};
static Configure conf = Configure.getInstance();
static {
ConfObserver.add(Logger.class.getName(), new Runnable() {
public void run() {
if (CompareUtil.equals(lastDir, conf.log_dir) == false || lastFileRotation != conf.log_rotation_enalbed) {
pw = (PrintWriter) FileUtil.close(pw);
lastDir = conf.log_dir;
lastFileRotation = conf.log_rotation_enalbed;
}
}
});
Thread t = new Thread(proc, "scouter.agent.Logger");
t.setDaemon(true);
t.start();
}
private static synchronized void openFile() throws IOException {
if (pw == null) {
lastDataUnit = DateUtil.getDateUnit();
lastDir = conf.log_dir;
lastFileRotation = conf.log_rotation_enalbed;
new File(lastDir).mkdirs();
if (conf.log_rotation_enalbed) {
FileWriter fw = new FileWriter(new File(conf.log_dir, "agent-" + DateUtil.yyyymmdd() + ".log"), true);
pw = new PrintWriter(fw);
} else {
pw = new PrintWriter(new File(conf.log_dir, "agent.log"));
}
lastDataUnit = DateUtil.getDateUnit();
}
}
protected static void clearOldLog() {
if (conf.log_rotation_enalbed == false)
return;
if (conf.log_keep_days <= 0)
return;
long nowUnit = DateUtil.getDateUnit();
File dir = new File(conf.log_dir);
File[] files = dir.listFiles();
for (int i = 0; i < files.length; i++) {
if (files[i].isDirectory())
continue;
String name = files[i].getName();
if (name.startsWith("agent-") == false)
continue;
int x = name.lastIndexOf('.');
if (x < 0)
continue;
String date = name.substring("agent-".length(), x);
if (date.length() != 8)
continue;
try {
long d = DateUtil.yyyymmdd(date);
long fileUnit = DateUtil.getDateUnit(d);
if (nowUnit - fileUnit > DateUtil.MILLIS_PER_DAY * conf.log_keep_days) {
files[i].delete();
}
} catch (Exception e) {
}
}
}
public static void main(String[] args) {
String name = "agent-19701123.log";
int x = name.lastIndexOf('.');
String date = name.substring("agent-".length(), x);
System.out.println(date);
}
}