Programmatical setting of loggers only works for the first logger declared
unfortunately. Further there's a missing API that allows me to get a list of
loggers (or configurations) to walk and set level like get Category in v1. See
my code below that has coupling between code and log4j2.xml
Only the DLA logger seems to work for setting level at run time. If I remove
the level="DEBUG" attributes from the loggers, then I don't get any logs.
Code:
if (logLevelDebug != null) {
LoggerContext ctx = (LoggerContext)
LogManager.getContext(false);
Configuration config = ctx.getConfiguration();
LoggerConfig loggerConfig =
config.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);
loggerConfig.setLevel(Level.DEBUG);
loggerConfig = config.getLoggerConfig("VIDEO"); // doesn't
work. Is coupling with log4j2.xml
loggerConfig.setLevel(Level.DEBUG);
loggerConfig = config.getLoggerConfig("DLA"); // this
works, but is first declared in log4j2.xml
loggerConfig.setLevel(Level.DEBUG);
loggerConfig = config.getLoggerConfig("DEVICES");// doesn't
work
loggerConfig.setLevel(Level.DEBUG);
ctx.updateLoggers(); // This causes all Loggers to refetch
information from their LoggerConfig.
logger.debug("ErrorLogsUI: setting root logger to DEBUG");
}
String logLevelWarn = req.getParameter("logLevelWarn");
if (logLevelWarn != null) {
LoggerContext ctx = (LoggerContext)
LogManager.getContext(false);
Configuration config = ctx.getConfiguration();
LoggerConfig loggerConfig =
config.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);
loggerConfig.setLevel(Level.WARN);
loggerConfig = config.getLoggerConfig("VIDEO");
loggerConfig.setLevel(Level.WARN);
loggerConfig = config.getLoggerConfig("DLA");
loggerConfig.setLevel(Level.WARN);
loggerConfig = config.getLoggerConfig("DEVICES");
loggerConfig.setLevel(Level.WARN);
ctx.updateLoggers(); // This causes all Loggers to refetch
information from their LoggerConfig.
logger.warn("ErrorLogsUI: setting root logger to WARN");
}
<?xml version="1.0" encoding="UTF-8"?>
<configuration status="trace" level="trace" >
<appenders>
<FastRollingFile name="DLA"
fileName="/tmp/att/sync/log/dla.log"
filePattern="/tmp/att/sync/log/dla.log.%i"
append="true">
<PatternLayout>
<pattern>[%d][%-5p][%-15t][%-15c{1}]:%m%n</pattern>
</PatternLayout>
<Policies>
<SizeBasedTriggeringPolicy size="3 MB" />
</Policies>
<DefaultRolloverStrategy max="2" />
</FastRollingFile>
<FastRollingFile name="DEVICES"
fileName="/tmp/att/sync/log/dla_devices.log"
filePattern="/tmp/att/sync/log/dla_devices.log.%i"
append="true">
<PatternLayout>
<pattern>[%d][%-5p][%-15t][%-15c{1}]:%m%n</pattern>
</PatternLayout>
<Policies>
<SizeBasedTriggeringPolicy size="3 MB" />
</Policies>
<DefaultRolloverStrategy max="1" />
</FastRollingFile>
<FastRollingFile name="VIDEO"
fileName="/tmp/att/sync/log/dla_video.log"
filePattern="/tmp/att/sync/log/dla_video.log.%i"
append="true">
<PatternLayout>
<pattern>[%d][%-5p][%-15t][%-15c{1}]:%m%n</pattern>
</PatternLayout>
<Policies>
<SizeBasedTriggeringPolicy size="3 MB" />
</Policies>
<DefaultRolloverStrategy max="1" />
</FastRollingFile>
<Console name="CO" target="SYSTEM_OUT">
<PatternLayout pattern="%d %-5p [%t] %C{2} (%F:%L) -
%m%n" />
</Console>
</appenders>
<loggers>
<logger name="com.att.dlc.afm" additivity="false" >
<appender-ref ref="DLA" />
</logger>
<logger name="com.att.dlc.devices" additivity="false"
level="debug">
<appender-ref ref="DEVICES" />
</logger>
<logger name="com.att.dlc.util.serialport" additivity="false"
level="debug">
<appender-ref ref="DEVICES" />
</logger>
<logger name="com.att.dlc.webcamserver" additivity="false"
level="debug">
<appender-ref ref="VIDEO" />
</logger>
<logger name="com.att.dlc.devices.cameras" additivity="false"
level="debug">
<appender-ref ref="VIDEO" />
</logger>
<root level="debug">
<appender-ref ref="DLA" />
</root>
</loggers>
</configuration>
Curt Smith
