org.apache.james.container.spring.lifecycle.LogProviderImpl Maven / Gradle / Ivy
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package org.apache.james.container.spring.lifecycle;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.log4j.Level;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.InitializingBean;
/**
* Provide a Log object for components
*/
public class LogProviderImpl implements LogProvider, InitializingBean, LogProviderManagementMBean {
private final ConcurrentHashMap logMap = new ConcurrentHashMap();
private Map logs;
private final static String PREFIX = "james.";
/**
* Use {@link Logger} to create the Log
*
* @param loggerName
* @return log
*/
protected Logger createLog(String loggerName) {
return LoggerFactory.getLogger(loggerName);
}
public void setLogMappings(Map logs) {
this.logs = logs;
}
/**
* @see
* org.springframework.beans.factory.InitializingBean#afterPropertiesSet()
*/
public void afterPropertiesSet() throws Exception {
if (logs != null) {
for (String key : logs.keySet()) {
String value = logs.get(key);
registerLog(key, createLog(PREFIX + value));
}
}
}
/**
* @see
* org.apache.james.container.spring.lifecycle.LogProvider#getLog(java.lang.String)
*/
public Logger getLog(String name) {
logMap.putIfAbsent(name, createLog(PREFIX + name));
return logMap.get(name);
}
/**
* @see
* org.apache.james.container.spring.lifecycle.LogProvider#registerLog(java.lang.String, org.slf4j.Logger)
*/
public void registerLog(String beanName, Logger log) {
logMap.put(beanName, log);
}
/**
* @see LogProviderManagementMBean#getSupportedLogLevels()
*/
public List getSupportedLogLevels() {
return Arrays.asList("DEBUG", "INFO", "WARN", "ERROR", "OFF");
}
/**
* @see LogProviderManagementMBean#getLogLevels()
*/
public Map getLogLevels() {
TreeMap levels = new TreeMap();
for (String name : logMap.keySet()) {
String level = getLogLevel(name);
if (level != null)
levels.put(name, level);
}
return levels;
}
/**
* @see LogProviderManagementMBean#getLogLevel(java.lang.String)
*/
public String getLogLevel(String component) {
Logger log = logMap.get(component);
if (log == null) {
throw new IllegalArgumentException("No Log for component " + component);
}
org.apache.log4j.Logger logger = org.apache.log4j.Logger.getRootLogger();
if (logger == null || logger.getLevel() == null) {
return null;
}
Level level = logger.getLevel();
return level.toString();
}
/**
* @see LogProviderManagementMBean#setLogLevel(String, String)
*/
public void setLogLevel(String component, String loglevel) {
if (!getSupportedLogLevels().contains(loglevel)) {
throw new IllegalArgumentException("Not supported loglevel given");
} else {
((org.apache.log4j.Logger) logMap.get(component)).setLevel(Level.toLevel(loglevel));
}
}
}