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/*-
* ============LICENSE_START=======================================================
* OPENECOMP - MSO
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.mso.logger;
import java.io.File;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;
import org.slf4j.LoggerFactory;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.joran.JoranConfigurator;
/**
* This class will attempt to initialize MSO log4j when part of a web application.
* It will look for the logback configuration file logback.xml in the
* following order:
* 1. In an init-param "log.configuration" in web.xml
* 2. TODO: In a property "log.configuration" in an "application.properties" file
* 3. In the default location "/etc/ecomp/mso/config"
* 4. Using the log4j default (check system property log.configuration or
* just look on the classpath for logback.xml)
*
*
*/
@WebListener
public class MsoLogInitializer implements ServletContextListener
{
private static String DEFAULT_LOG4J_PROPERTIES_FILE = "/etc/ecomp/mso/config/logback.xml";
private static String prefixMsoPropertiesPath = System.getProperty("mso.config.path");
static {
if (prefixMsoPropertiesPath == null) {
prefixMsoPropertiesPath = "/";
} else if (!(prefixMsoPropertiesPath.charAt(prefixMsoPropertiesPath.length() - 1) == '/')) {
prefixMsoPropertiesPath = prefixMsoPropertiesPath + "/";
}
}
public MsoLogInitializer () {
}
@Override
public void contextDestroyed(ServletContextEvent event) {
// Nothing to do...
}
@Override
public void contextInitialized(ServletContextEvent event)
{
String logPropertiesFile = null;
try {
// Look first in the init-parameters
String initParam = event.getServletContext().getInitParameter("log.configuration");
if (initParam != null && fileIsReadable(prefixMsoPropertiesPath + initParam)) {
logPropertiesFile = prefixMsoPropertiesPath + initParam;
}
else if (fileIsReadable(DEFAULT_LOG4J_PROPERTIES_FILE)) {
logPropertiesFile = DEFAULT_LOG4J_PROPERTIES_FILE;
}
if (logPropertiesFile != null) {
// Initialize loggers with the specified file. If no such file was
// specified, will use the default Log4j resolution.
LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
JoranConfigurator jc = new JoranConfigurator();
jc.setContext(context);
context.reset();
jc.doConfigure(logPropertiesFile);
// Try it out
MsoLogger initLogger = MsoLogger.getMsoLogger(MsoLogger.Catalog.GENERAL);
initLogger.info(MessageEnum.INIT_LOGGER, logPropertiesFile, "", "");
}
} catch (Exception e) {
MsoLogger initLogger = MsoLogger.getMsoLogger(MsoLogger.Catalog.GENERAL);
initLogger.error (MessageEnum.INIT_LOGGER_FAIL, "", "", MsoLogger.ErrorCode.UnknownError, "", e);
}
}
private boolean fileIsReadable (String filePath) {
File f = new File(filePath);
if (f.exists() && f.canRead())
return true;
return false;
}
}
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