log4j-core/src/test/resources/log4j-rolling-with-custom-delete-script.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 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
 (the "License"); you may not use this file except in compliance with
 the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.

-->
<Configuration status="WARN" name="RollingWithCustomDeleteScriptTest">
  <Properties>
    <Property name="base">target/rolling-with-delete-script/</Property>
  </Properties>

  <Appenders>
    <RollingFile name="RollingFile" fileName="${base}/rollingtest.log" 
                   filePattern="${base}/test/test-%i.log">
      <PatternLayout>
        <Pattern>%d %p %c{1.} [%t] %m%n</Pattern>
      </PatternLayout>
      <Policies>
        <SizeBasedTriggeringPolicy size="50" />
      </Policies>
      <DefaultRolloverStrategy max="100" stopCustomActionsOnError="true">
        <Delete basePath="${base}/test" maxDepth="1" followLinks="false">
          <ScriptCondition>
            <Script name="GroovyCondition" language="groovy"><![CDATA[
                import java.nio.file.*;
                
                def pattern = ~/test-(\d*)\.log/;
                assert pattern.getClass() == java.util.regex.Pattern;
                
                def copy = pathList.collect{it};
                pathList.each { pathWithAttributes ->
                  def relative = basePath.relativize pathWithAttributes.path
                  def str = relative.toString();
                  statusLogger.trace 'SCRIPT: relative path is ' + str + " (base=$basePath)";
                  
                  // keep only files with odd indexes
                  
                  def m = pattern.matcher(str);
                  if (m.find()) {
                    def index = m.group(1) as int;
                    def isOdd = (index % 2) == 1;
                    if (isOdd) {
                      copy.remove pathWithAttributes; // remove path with odd index from list to delete
                      statusLogger.trace 'SCRIPT: not deleting path ' + pathWithAttributes;
                    }
                  }
                }
                statusLogger.trace 'SCRIPT: returning ' + copy;
                copy;
              ]]>
            </Script>
          </ScriptCondition>
        </Delete>
      </DefaultRolloverStrategy>
    </RollingFile>
  </Appenders>

  <Loggers>
    <Root level="trace">
      <AppenderRef ref="RollingFile" />
    </Root>
  </Loggers>

</Configuration>