/*
* Copyright 2013, The Sporting Exchange Limited
*
* 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 com.betfair.cougar.core.impl.logging;
import com.betfair.cougar.core.api.exception.PanicInTheCougar;
import com.betfair.cougar.logging.handlers.Log4JLogHandler;
import org.apache.log4j.*;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.net.InetAddress;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
/**
* CougarLog4JBootstrap class is used to initialise the log4j's default appender
* for the RootLogger. Users can override this class, and should if they don't
* want to use log4j, or their implementation already has a default appender
* configured for the RootLogger.
*
* If you want to initialise something other than log4j, then initialise
* <code>cougar.core.log.bootstrap.class</code> System variable to point to your implementation
*
*/
public class CougarLog4JBootstrap implements LogBootstrap {
public static final String DEFAULT_LOGGING_PATTERN = "%d{yyyy-MM-dd HH:mm:ss.SSS}: %c %p - %m%n";
public static final String DEFAULT_LOG_FILENAME_FORMAT = "{0}/{1}-{2}-server.log";
public static final String DEFAULT_ROTATION_POLICY = "'.'yyyy-MM-dd";
public static final String DEFAULT_LOG_LEVEL = "INFO";
public static final String APP_NAME_PROPERTY = "cougar.app.name";
public static final String LOG_DIR_PROPERTY = "cougar.log.dir";
public static final String LOG_LEVEL_PROPERTY = "cougar.log.level";
public static final String LOGGING_PATTERN_PROPERTY = "cougar.log.SERVER.pattern";
public static final String FILENAME_FORMAT_PROPERTY = "cougar.log.SERVER.filename.format";
public static final String ROTATION_POLICY_FORMAT_PROPERTY = "cougar.log.SERVER.rotation";
public static final String ECHO_TO_STDOUT_PROPERTY = "cougar.log.echoToStdout";
private String getValueOrDefault(Properties properties, String propertyName, String defaultValue) {
if (properties.containsKey(propertyName)) {
String propertyValue = properties.getProperty(propertyName);
return propertyValue.isEmpty() ? defaultValue : propertyValue;
} else {
return defaultValue;
}
}
public void init(Properties properties) throws IOException {
String hostname = InetAddress.getLocalHost().getHostName();
String appName = properties.getProperty(APP_NAME_PROPERTY);
String logDir = properties.getProperty(LOG_DIR_PROPERTY);
String pattern = getValueOrDefault(properties, LOGGING_PATTERN_PROPERTY, DEFAULT_LOGGING_PATTERN);
String filenameFormat = getValueOrDefault(properties, FILENAME_FORMAT_PROPERTY, DEFAULT_LOG_FILENAME_FORMAT);
String rotationPolicy = Log4JLogHandler.RolloverPolicy.valueOf(getValueOrDefault(properties,
ROTATION_POLICY_FORMAT_PROPERTY, DEFAULT_ROTATION_POLICY)).getLog4jDatePattern();
String jdkLogLevelString = getValueOrDefault(properties, LOG_LEVEL_PROPERTY, DEFAULT_LOG_LEVEL);
Level logLevel = new Log4jLoggingControl().convertJdkLevelToLog4jLevel(jdkLogLevelString);
if (logDir == null) {
throw new PanicInTheCougar("Cannot start with " + LOG_DIR_PROPERTY + " being set - value is currently null");
}
Boolean echoToStdOut = Boolean.parseBoolean(getValueOrDefault(properties, ECHO_TO_STDOUT_PROPERTY, "false"));
List<Appender> logAppenders = new ArrayList<Appender>();
Layout layout = new PatternLayout(pattern);
Appender appender = new DailyRollingFileAppender(
layout,
constructLogFilename(filenameFormat, logDir, hostname, appName),
rotationPolicy);
appender.setName("rootAppender");
logAppenders.add(appender);
if (echoToStdOut) {
Appender consoleAppender = new ConsoleAppender(layout);
consoleAppender.setName("consoleAppender");
logAppenders.add(consoleAppender);
}
Logger logger = Logger.getRootLogger();
for (Appender a : logAppenders) {
logger.addAppender(a);
}
logger.setAdditivity(false);
logger.setLevel(logLevel);
if (echoToStdOut) {
LoggerFactory.getLogger(getClass()).warn("Echoing all log output to stdout");
}
}
public String constructLogFilename(String format, String directory, String hostname, String appName) {
return MessageFormat.format(format, directory, hostname, appName);
}
}