.build/build-checkstyle.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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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 (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
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  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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  -->
    <project basedir="." name="apache-cassandra-checkstyle"
     xmlns:rat="antlib:org.apache.rat.anttasks">

    <target name="init-checkstyle" depends="resolver-retrieve-build,build-project" unless="no-checkstyle">
        <path id="checkstyle.lib.path">
            <fileset dir="${test.lib}/jars" includes="*.jar"/>
        </path>
        <!-- Sevntu custom checks are retrieved by Ivy into lib folder
           and will be accessible to checkstyle-->
        <taskdef resource="com/puppycrawl/tools/checkstyle/ant/checkstyle-ant-task.properties"
                 classpathref="checkstyle.lib.path"/>
    </target>

    <target name="checkstyle" depends="init-checkstyle,build-project" description="Run custom checkstyle code analysis" unless="no-checkstyle">
        <property name="checkstyle.log.dir" value="${build.dir}/checkstyle" />
        <property name="checkstyle.report.file" value="${checkstyle.log.dir}/checkstyle_report.xml"/>
        <mkdir  dir="${checkstyle.log.dir}" />

        <property name="checkstyle.properties" value="${build.helpers.dir}/checkstyle.xml" />
        <property name="checkstyle.suppressions" value="${build.helpers.dir}/checkstyle_suppressions.xml" />
        <checkstyle config="${checkstyle.properties}"
                    failureProperty="checkstyle.failure"
                    failOnViolation="true">
            <formatter type="plain"/>
            <formatter type="xml" tofile="${checkstyle.report.file}"/>
            <fileset dir="${build.src.java}" includes="**/*.java"/>
        </checkstyle>
    </target>

    <target name="checkstyle-test" depends="init-checkstyle,resolver-retrieve-build,build-project" description="Run custom checkstyle code analysis on tests" unless="no-checkstyle">
        <property name="checkstyle.log.dir" value="${build.dir}/checkstyle" />
        <property name="checkstyle_test.report.file" value="${checkstyle.log.dir}/checkstyle_report_test.xml"/>
        <mkdir  dir="${checkstyle.log.dir}" />

        <property name="checkstyle_test.properties" value="${build.helpers.dir}/checkstyle_test.xml" />
        <property name="checkstyle.suppressions" value="${build.helpers.dir}/checkstyle_suppressions.xml" />
        <checkstyle config="${checkstyle_test.properties}"
                    failureProperty="checkstyle.failure"
                    failOnViolation="true">
            <formatter type="plain"/>
            <formatter type="xml" tofile="${checkstyle_test.report.file}"/>
            <fileset dir="${test.dir}" includes="**/*.java"/>
        </checkstyle>
    </target>

</project>