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/*
* Copyright 2012 - 2018 Anton Tananaev (anton@traccar.org)
*
* 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.
*/
package org.traccar.helper;
import org.apache.log4j.Appender;
import org.apache.log4j.DailyRollingFileAppender;
import org.apache.log4j.Layout;
import org.apache.log4j.Level;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;
import org.apache.log4j.varia.NullAppender;
import org.traccar.Config;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.lang.management.MemoryMXBean;
import java.lang.management.OperatingSystemMXBean;
import java.lang.management.RuntimeMXBean;
import java.nio.charset.Charset;
public final class Log {
private Log() {
}
public static final String DATE_FORMAT = "yyyy-MM-dd HH:mm:ss";
private static final String LOGGER_NAME = "traccar";
private static final String STACK_PACKAGE = "org.traccar";
private static final int STACK_LIMIT = 3;
private static Logger logger = null;
public static String getAppVersion() {
return Log.class.getPackage().getImplementationVersion();
}
public static void setupLogger(Config config) throws IOException {
Layout layout = new PatternLayout("%d{" + DATE_FORMAT + "} %5p: %m%n");
Appender appender = new DailyRollingFileAppender(
layout, config.getString("logger.file"), "'.'yyyyMMdd");
LogManager.resetConfiguration();
LogManager.getRootLogger().addAppender(new NullAppender());
logger = Logger.getLogger(LOGGER_NAME);
logger.addAppender(appender);
logger.setLevel(Level.toLevel(config.getString("logger.level"), Level.ALL));
Log.logSystemInfo();
Log.info("Version: " + getAppVersion());
}
public static Logger getLogger() {
if (logger == null) {
logger = Logger.getLogger(LOGGER_NAME);
logger.setLevel(Level.OFF);
}
return logger;
}
public static void logSystemInfo() {
try {
OperatingSystemMXBean operatingSystemBean = ManagementFactory.getOperatingSystemMXBean();
Log.info("Operating system"
+ " name: " + operatingSystemBean.getName()
+ " version: " + operatingSystemBean.getVersion()
+ " architecture: " + operatingSystemBean.getArch());
RuntimeMXBean runtimeBean = ManagementFactory.getRuntimeMXBean();
Log.info("Java runtime"
+ " name: " + runtimeBean.getVmName()
+ " vendor: " + runtimeBean.getVmVendor()
+ " version: " + runtimeBean.getVmVersion());
MemoryMXBean memoryBean = ManagementFactory.getMemoryMXBean();
Log.info("Memory limit"
+ " heap: " + memoryBean.getHeapMemoryUsage().getMax() / (1024 * 1024) + "mb"
+ " non-heap: " + memoryBean.getNonHeapMemoryUsage().getMax() / (1024 * 1024) + "mb");
Log.info("Character encoding: "
+ System.getProperty("file.encoding") + " charset: " + Charset.defaultCharset());
} catch (Exception error) {
Log.warning("Failed to get system info");
}
}
public static void error(String msg) {
getLogger().error(msg);
}
public static void warning(String msg) {
getLogger().warn(msg);
}
public static void warning(Throwable exception) {
warning(null, exception);
}
public static void warning(String msg, Throwable exception) {
StringBuilder s = new StringBuilder();
if (msg != null) {
s.append(msg);
}
if (exception != null) {
if (msg != null) {
s.append(" - ");
}
s.append(exceptionStack(exception));
}
getLogger().warn(s.toString());
}
public static void info(String msg) {
getLogger().info(msg);
}
public static void debug(String msg) {
getLogger().debug(msg);
}
public static String exceptionStack(Throwable exception) {
StringBuilder s = new StringBuilder();
String exceptionMsg = exception.getMessage();
if (exceptionMsg != null) {
s.append(exceptionMsg);
s.append(" - ");
}
s.append(exception.getClass().getSimpleName());
StackTraceElement[] stack = exception.getStackTrace();
if (stack.length > 0) {
int count = STACK_LIMIT;
boolean first = true;
boolean skip = false;
String file = "";
s.append(" (");
for (StackTraceElement element : stack) {
if (count > 0 && element.getClassName().startsWith(STACK_PACKAGE)) {
if (!first) {
s.append(" < ");
} else {
first = false;
}
if (skip) {
s.append("... < ");
skip = false;
}
if (file.equals(element.getFileName())) {
s.append("*");
} else {
file = element.getFileName();
s.append(file.substring(0, file.length() - 5)); // remove ".java"
count -= 1;
}
s.append(":").append(element.getLineNumber());
} else {
skip = true;
}
}
if (skip) {
if (!first) {
s.append(" < ");
}
s.append("...");
}
s.append(")");
}
return s.toString();
}
}
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