log4j-core/src/test/resources/log4j-script-filters.xml

<?xml version="1.0" encoding="UTF-8"?>
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  ~ Licensed to the Apache Software Foundation (ASF) under one or more
  ~ contributor license agreements. See the NOTICE file distributed with
  ~ this work for additional information regarding copyright ownership.
  ~ The ASF licenses this file to You under the Apache License, Version 2.0
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<Configuration status="ERROR">
  <Appenders>
    <List name="List">
      <PatternLayout pattern="[%-5level] %c{1.} %msg%n"/>
    </List>
  </Appenders>
  <Loggers>
    <Logger name="TestJavaScriptFilter" level="trace" additivity="false">
      <AppenderRef ref="List">
        <ScriptFilter onMatch="ACCEPT" onMisMatch="DENY">
          <Script name="JavascriptFilter" language="JavaScript"><![CDATA[
            var result = false;
            if (logEvent.getMarker() != null && logEvent.getMarker().isInstanceOf("FLOW")) {
                result = true;
            } else if (logEvent.getContextMap().containsKey("UserId")) {
                result = true;
            }
            result;
            ]]>
          </Script>
        </ScriptFilter>
      </AppenderRef>
    </Logger>
    <Logger name="TestGroovyFilter" level="trace" additivity="false">
      <AppenderRef ref="List">
        <ScriptFilter onMatch="ACCEPT" onMisMatch="DENY">
          <Script name="GroovyFilter" language="groovy"><![CDATA[
            logEvent.marker?.isInstanceOf('FLOW') || logEvent.contextMap.containsKey('UserId')
            ]]>
          </Script>
        </ScriptFilter>
      </AppenderRef>
    </Logger>
    <Root level="trace">
      <AppenderRef ref="List" />
    </Root>
  </Loggers>
</Configuration>