I'm working on a custom layout to mask sensitive information in our production
logs.
One of the key features is to use regular expressions - so i need the syntax of
logback.xml to support the special characters in regex - including $.
I have searched high and low with google - and read the source a bit. but it
looks like there is no mechanism to escape this character.
Here is a fragment of my config file:
... <layout class="log.PIIFilterLayout">
<pattern>:%d{HH:mm:ss.SSS} [%thread] %-5level %logger{1} - %msg %n</pattern>
<!-- adhoc patterns -->
<regex>mdn='(.+)'</regex> <regex>accountName=(.+)$</regex>...
I have tried: - $ - \$ - \\$ - $ No matter what - i get this:
Failed to instantiate [ch.qos.logback.classic.LoggerContext]Reported
exception:java.lang.IllegalArgumentException: Failed to parse input
[accountName=(.+)\\$] at
ch.qos.logback.core.util.OptionHelper.substVars(OptionHelper.java:119) at
ch.qos.logback.core.joran.spi.InterpretationContext.subst(InterpretationContext.java:159)
at
ch.qos.logback.core.joran.action.NestedBasicPropertyIA.body(NestedBasicPropertyIA.java:87)
at
ch.qos.logback.core.joran.spi.Interpreter.callBodyAction(Interpreter.java:295)
at ch.qos.logback.core.joran.spi.Interpreter.characters(Interpreter.java:175)
at ch.qos.logback.core.joran.spi.EventPlayer.play(EventPlayer.java:57) at
ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:149)
at
ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:135)
at
ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:99)
at
ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:49)
at
ch.qos.logback.classic.util.ContextInitializer.configureByResource(ContextInitializer.java:75)
at
ch.qos.logback.classic.util.ContextInitializer.autoConfig(ContextInitializer.java:150)
at org.slf4j.impl.StaticLoggerBinder.init(StaticLoggerBinder.java:85) at
org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:55) at
org.slf4j.LoggerFactory.bind(LoggerFactory.java:129) at
org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:108) at
org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:302) at
org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:276) at
util.LogFactory.getLogger(LogFactory.java:27) at
log.PIITest.<clinit>(PIITest.java:20)Caused by:
ch.qos.logback.core.spi.ScanException: Unexpected end of pattern string
How can i escape $ in logback.xml?
Paul
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