I have variables with defaults in my logback.xml
configuration file, and I would like to be able to optionally set these variables from my typesafe config application.conf
file.
I am deploying the application using one-jar, and the application.conf
file packaged up in the deployable jar contains defaults. I pass -Dconfig.file=foo.conf
on execution to provide the path to a server-specific config file.
Right now I can also pass -Dlog.level
and other variables to override my defaults in logback.xml
, and I also have to pass -Dfile.encoding=UTF-8
on the command line. I'm looking for a way to be able to specify these properties in the typesafe config instead of on the command line. It feels like there should be a way to do it, but I can't find the magic words.
logback.xml:
<configuration>
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>${log.path:-logs/}/${log.file:-myLog.log}</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<!-- daily rollover -->
<fileNamePattern>logFile.%d{yyyy-MM-dd}.log</fileNamePattern>
<!-- keep 15 days' worth of history -->
<maxHistory>${log.history.days:-15}</maxHistory>
</rollingPolicy>
<encoder>
<pattern>%-4relative [%thread] %-5level %logger{35} - %msg%n</pattern>
</encoder>
</appender>
<root level="${log.level:-INFO}">
<appender-ref ref="FILE" />
</root>
</configuration>
application.conf (bundled):
akka {
log-config-on-start = false
event-handlers = ["akka.event.slf4j.Slf4jEventHandler"]
}
sample server-specific app.conf:
include "/application.conf"
akka.log-config-on-start = true
log.level = WARN // this is what I'd LIKE to be able to do
How I'm currently running the app:
java -Dfile.encoding=UTF-8 -Dconfig.file=myApp.conf -Dlog.level=WARN -jar myApp_2.10-0.1-one-jar.jar
I chose to programmatically configure logback having typesafe config. It turned out to be easy.
def enableRemoteLogging(config: Config) = {
val ctx = LoggerFactory.getILoggerFactory.asInstanceOf[LoggerContext]
val gelf = new GelfAppender
gelf.setGraylog2ServerHost(config.getString("logging.remote.server"))
gelf.setUseLoggerName(true)
gelf.setUseThreadName(true)
gelf.setUseMarker(true)
gelf.setIncludeFullMDC(true)
gelf.setContext(ctx)
gelf.start()
LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME)
.asInstanceOf[ch.qos.logback.classic.Logger]
.addAppender(gelf)
}