pom.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.
  -->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/maven-v4_0_0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <parent>
    <groupId>org.apache.logging</groupId>
    <artifactId>logging-parent</artifactId>
    <version>8</version>
    <relativePath/>
  </parent>

  <groupId>org.apache.logging.log4j</groupId>
  <artifactId>log4j</artifactId>
  <version>2.20.1-SNAPSHOT</version>
  <packaging>pom</packaging>

  <name>Apache Log4j 2</name>
  <description>Apache Log4j 2</description>
  <url>https://logging.apache.org/log4j/2.x/</url>

  <inceptionYear>1999</inceptionYear>

  <!-- Developer IDs are used to map author IDs to names while exporting changelogs.
       Hence, updates here need to be reflected to `.changelog-entries.adoc.ftl` too. -->
  <developers>

    <developer>
      <id>rgoers</id>
      <name>Ralph Goers</name>
      <email>rgoers@apache.org</email>
      <organization>Nextiva</organization>
      <roles>
        <role>PMC Member</role>
      </roles>
      <timezone>America/Phoenix</timezone>
    </developer>

    <developer>
      <id>ggregory</id>
      <name>Gary Gregory</name>
      <email>ggregory@apache.org</email>
      <url>https://www.garygregory.com</url>
      <organization>The Apache Software Foundation</organization>
      <organizationUrl>https://www.apache.org/</organizationUrl>
      <roles>
        <role>PMC Member</role>
      </roles>
      <timezone>America/New_York</timezone>
    </developer>

    <developer>
      <id>sdeboy</id>
      <name>Scott Deboy</name>
      <email>sdeboy@apache.org</email>
      <roles>
        <role>PMC Member</role>
      </roles>
      <timezone>America/Los_Angeles</timezone>
    </developer>

    <developer>
      <id>rpopma</id>
      <name>Remko Popma</name>
      <email>rpopma@apache.org</email>
      <roles>
        <role>PMC Member</role>
      </roles>
      <timezone>Asia/Tokyo</timezone>
    </developer>

    <developer>
      <id>nickwilliams</id>
      <name>Nick Williams</name>
      <email>nickwilliams@apache.org</email>
      <roles>
        <role>PMC Member</role>
      </roles>
      <timezone>America/Chicago</timezone>
    </developer>

    <developer>
      <id>mattsicker</id>
      <name>Matt Sicker</name>
      <email>mattsicker@apache.org</email>
      <organization>Apple</organization>
      <roles>
        <role>PMC Member</role>
      </roles>
      <timezone>America/Chicago</timezone>
    </developer>

    <developer>
      <id>bbrouwer</id>
      <name>Bruce Brouwer</name>
      <email>bruce.brouwer@gmail.com</email>
      <roles>
        <role>Committer</role>
      </roles>
      <timezone>America/Detroit</timezone>
    </developer>

    <developer>
      <id>rgupta</id>
      <name>Raman Gupta</name>
      <email>rgupta@apache.org</email>
      <roles>
        <role>Committer</role>
      </roles>
      <timezone>Asia/Kolkata</timezone>
    </developer>

    <developer>
      <id>mikes</id>
      <name>Mikael Ståldal</name>
      <email>mikes@apache.org</email>
      <organization>Spotify</organization>
      <roles>
        <role>PMC Member</role>
      </roles>
      <timezone>Europe/Stockholm</timezone>
    </developer>

    <developer>
      <id>ckozak</id>
      <name>Carter Kozak</name>
      <email>ckozak@apache.org</email>
      <url>https://github.com/carterkozak</url>
      <roles>
        <role>PMC Member</role>
      </roles>
      <timezone>America/New York</timezone>
    </developer>

    <developer>
      <id>vy</id>
      <name>Volkan Yazıcı</name>
      <email>vy@apache.org</email>
      <roles>
        <role>PMC Chair</role>
      </roles>
      <timezone>Europe/Amsterdam</timezone>
    </developer>

    <developer>
      <id>rgrabowski</id>
      <name>Ron Grabowski</name>
      <email>rgrabowski@apache.org</email>
      <roles>
        <role>PMC Member</role>
      </roles>
      <timezone>America/New_York</timezone>
    </developer>

    <developer>
      <id>pkarwasz</id>
      <name>Piotr P. Karwasz</name>
      <email>pkarwasz@apache.org</email>
      <roles>
        <role>PMC Member</role>
      </roles>
      <timezone>Europe/Warsaw</timezone>
    </developer>

    <developer>
      <id>grobmeier</id>
      <name>Christian Grobmeier</name>
      <email>grobmeier@apache.org</email>
      <roles>
        <role>PMC Member</role>
      </roles>
      <timezone>Europe/Berlin</timezone>
    </developer>

  </developers>

  <mailingLists>

    <mailingList>
      <name>log4j-user</name>
      <subscribe>log4j-user-subscribe@logging.apache.org</subscribe>
      <unsubscribe>log4j-user-unsubscribe@logging.apache.org</unsubscribe>
      <post>log4j-user@logging.apache.org</post>
      <archive>https://lists.apache.org/list.html?log4j-user@logging.apache.org</archive>
    </mailingList>

    <mailingList>
      <name>dev</name>
      <subscribe>dev-subscribe@logging.apache.org</subscribe>
      <unsubscribe>dev-unsubscribe@logging.apache.org</unsubscribe>
      <post>dev@logging.apache.org</post>
      <archive>https://lists.apache.org/list.html?dev@logging.apache.org</archive>
    </mailingList>

  </mailingLists>

  <modules>

    <!-- Unpublished modules first: -->
    <module>log4j-api-java9</module>
    <module>log4j-core-java9</module>

    <!-- Modules in alphabetical order: -->
    <module>log4j-1.2-api</module>
    <module>log4j-api</module>
    <module>log4j-api-test</module>
    <module>log4j-appserver</module>
    <module>log4j-bom</module>
    <module>log4j-cassandra</module>
    <module>log4j-core</module>
    <module>log4j-core-its</module>
    <module>log4j-core-test</module>
    <module>log4j-couchdb</module>
    <!-- `log4j-distribution` is excluded to speed up the build.
         It is only needed while creating a release.
         It is enabled by the `apache-release` profile defined below. -->
    <module>log4j-docker</module>
    <module>log4j-flume-ng</module>
    <module>log4j-iostreams</module>
    <module>log4j-jakarta-smtp</module>
    <module>log4j-jakarta-web</module>
    <module>log4j-jcl</module>
    <module>log4j-jpa</module>
    <module>log4j-jpl</module>
    <module>log4j-jdbc-dbcp2</module>
    <module>log4j-jmx-gui</module>
    <module>log4j-jul</module>
    <module>log4j-kubernetes</module>
    <module>log4j-layout-template-json</module>
    <module>log4j-layout-template-json-test</module>
    <module>log4j-mongodb3</module>
    <module>log4j-mongodb4</module>
    <module>log4j-osgi</module>
    <module>log4j-perf</module>
    <module>log4j-slf4j-impl</module>
    <module>log4j-slf4j2-impl</module>
    <module>log4j-spring-boot</module>
    <module>log4j-spring-cloud-config</module>
    <module>log4j-taglib</module>
    <module>log4j-to-slf4j</module>
    <module>log4j-to-jul</module>
    <module>log4j-web</module>

  </modules>

  <scm>
    <connection>scm:git:https://github.com/apache/logging-log4j2.git</connection>
    <developerConnection>scm:git:https://github.com/apache/logging-log4j2.git</developerConnection>
    <tag>log4j-2.20.1-rc1</tag>
    <url>https://github.com/apache/logging-log4j2</url>
  </scm>

  <issueManagement>
    <system>GitHub Issues</system>
    <url>https://github.com/apache/logging-log4j2/issues</url>
  </issueManagement>

  <ciManagement>
    <system>GitHub Actions</system>
    <url>https://github.com/apache/logging-log4j2/actions</url>
  </ciManagement>

  <distributionManagement>
    <!-- `site` is only included to make `maven-site-plugin` stop complaining: -->
    <site>
      <id>www.example.com</id>
      <url>scp://www.example.com/www/docs/project/</url>
    </site>
    <downloadUrl>https://logging.apache.org/log4j/2.x/download.html</downloadUrl>
    <!-- `repository` from ASF parent POM (id: apache.releases.https) -->
    <!-- `snapshotRepository` from ASF parent POM (id: apache.snapshots.https) -->
  </distributionManagement>

  <properties>

    <!-- ===========================
         Release-specific properties
         =========================== -->
    <log4jParentDir>${basedir}</log4jParentDir>
    <log4jReleaseVersion>2.20.0</log4jReleaseVersion>
    <log4jReleaseVersionJava7>2.12.4</log4jReleaseVersionJava7>
    <log4jReleaseVersionJava6>2.3.2</log4jReleaseVersionJava6>
    <log4jReleaseManager>Ralph Goers</log4jReleaseManager>
    <log4jReleaseKey>B3D8E1BA</log4jReleaseKey>
    <log4jSigningUserName>rgoers@apache.org</log4jSigningUserName>

    <!-- =================
         Common properties
         ================= -->
    <manifestfile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestfile>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <!-- Fixed `project.build.outputTimestamp` is required for reproducible builds: https://maven.apache.org/guides/mini/guide-reproducible-builds.html -->
    <project.build.outputTimestamp>1676697577</project.build.outputTimestamp>
    <docLabel>Site Documentation</docLabel>
    <projectDir/>
    <module.name/>

    <!-- ========================
         Site-specific properties
         ======================== -->
    <!-- `maven-javadoc-plugin` is only used to generate Javadoc HTML used in the website.
         We don't deploy any Javadoc JARs.
         We also don't generate Javadoc HTML for all modules, but only for two modules: `log4j-api` and `log4j-core`. -->
    <javadoc.skip>true</javadoc.skip>
    <!-- Skipping `maven-site-plugin` globally.
         It is manually enabled only for the parent module below. -->
    <maven.site.skip>true</maven.site.skip>
    <maven.site.deploy.skip>true</maven.site.deploy.skip>

    <!-- ██     ██  █████  ██████  ███    ██ ██ ███    ██  ██████  ██
         ██     ██ ██   ██ ██   ██ ████   ██ ██ ████   ██ ██       ██
         ██  █  ██ ███████ ██████  ██ ██  ██ ██ ██ ██  ██ ██   ███ ██
         ██ ███ ██ ██   ██ ██   ██ ██  ██ ██ ██ ██  ██ ██ ██    ██
          ███ ███  ██   ██ ██   ██ ██   ████ ██ ██   ████  ██████  ██

         Dependency and plugin version properties might have many implications beyond their simple appearance!
         Walk through the following checklist before making a change in these properties!

         1. Follow the `<artifactId>.version` naming convention
         2. Make sure properties are sorted in alphabetical order
         3. Check parent POMs for any associations.
            For instance, Maven Surefire Plugin version property is such an exception.
            It is named as `surefire.version` rather than `maven-surefire-plugin.version`, since `surefire.version` is already employed by `apache.org:apache` parent POM.
         4. Think of consequences when users _import_ this POM along with, e.g., `spring-boot-dependencies` BOM -->

    <!-- =================================================
         Plugin version properties (in alphabetical order)
         ================================================= -->
    <asciidoctor-maven-plugin.version>2.2.2</asciidoctor-maven-plugin.version>
    <build-helper-maven-plugin.version>3.3.0</build-helper-maven-plugin.version>
    <!-- checkstyle 10.0 requires Java 11 -->
    <checkstyle.version>9.3</checkstyle.version>
    <checksum-maven-plugin.version>1.11</checksum-maven-plugin.version>
    <docker-maven-plugin.version>0.42.0</docker-maven-plugin.version>
    <exam-maven-plugin.version>4.13.5</exam-maven-plugin.version>
    <findsecbugs-plugin.version>1.12.0</findsecbugs-plugin.version>
    <log4j-tools.version>0.3.0</log4j-tools.version>
    <maven-artifact-plugin.version>3.4.0</maven-artifact-plugin.version>
    <maven-bundle-plugin.version>5.1.8</maven-bundle-plugin.version>
    <maven-checkstyle-plugin.version>3.2.0</maven-checkstyle-plugin.version>
    <maven-enforcer-plugin.version>3.2.1</maven-enforcer-plugin.version>
    <maven-dependency-plugin.version>3.5.0</maven-dependency-plugin.version>
    <maven-pmd-plugin.version>3.19.0</maven-pmd-plugin.version>
    <maven-scm-plugin.version>1.13.0</maven-scm-plugin.version>
    <maven-source-plugin.version>3.2.1</maven-source-plugin.version>
    <maven-taglib-plugin.version>2.4</maven-taglib-plugin.version>
    <maven-toolchains-plugin.version>3.1.0</maven-toolchains-plugin.version>
    <spotbugs-maven-plugin.version>4.7.2.1</spotbugs-maven-plugin.version>
    <spotless-maven-plugin.version>2.27.2</spotless-maven-plugin.version>
    <!-- `surefire.version` property used in `apache.org:apache`: -->
    <surefire.version>3.0.0-M9</surefire.version>
    <!-- Maven site depends on Velocity and the escaping rules are different in newer versions. -->
    <!-- See https://maven.apache.org/plugins/maven-site-plugin/migrate.html -->
    <velocity.plugin.version>1.5</velocity.plugin.version>
    <xml-maven-plugin.version>1.0.2</xml-maven-plugin.version>

    <!-- =====================================================
         Dependency version properties (in alphabetical order)
         ===================================================== -->
    <activemq.version>5.17.4</activemq.version>
    <angus-activation.version>2.0.0</angus-activation.version>
    <angus-mail.version>2.0.1</angus-mail.version>
    <asm.version>9.4</asm.version>
    <assertj.version>3.24.2</assertj.version>
    <awaitility.version>4.2.0</awaitility.version>
    <bsh.version>2.0b6</bsh.version>
    <byte-buddy.version>1.12.21</byte-buddy.version>
    <cassandra.version>3.11.14</cassandra.version>
    <cassandra-driver.version>3.11.3</cassandra-driver.version>
    <commons-codec.version>1.15</commons-codec.version>
    <commons-compress.version>1.22</commons-compress.version>
    <commons-csv.version>1.10.0</commons-csv.version>
    <commons-dbcp2.version>2.9.0</commons-dbcp2.version>
    <commons-httpclient.version>3.1</commons-httpclient.version>
    <commons-io.version>2.11.0</commons-io.version>
    <commons-lang3.version>3.12.0</commons-lang3.version>
    <commons-logging.version>1.2</commons-logging.version>
    <commons-pool2.version>2.11.1</commons-pool2.version>
    <!-- `com.conversantmedia:disruptor` version 1.2.16 requires Java 9: -->
    <conversant.disruptor.version>1.2.15</conversant.disruptor.version>
    <disruptor.version>3.4.4</disruptor.version>
    <elasticsearch.version>7.17.9</elasticsearch.version>
    <embedded-ldap.version>0.9.0</embedded-ldap.version>
    <embedded-mongo.version>3.5.1</embedded-mongo.version>
    <felix.version>7.0.5</felix.version>
    <flume.version>1.11.0</flume.version>
    <groovy.version>3.0.15</groovy.version>
    <guava.version>31.1-jre</guava.version>
    <h2.version>2.1.214</h2.version>
    <hadoop.version>1.2.1</hadoop.version>
    <hamcrest.version>2.2</hamcrest.version>
    <HdrHistogram.version>2.1.12</HdrHistogram.version>
    <hsqldb.version>2.5.2</hsqldb.version>
    <httpclient.version>4.5.14</httpclient.version>
    <httpcore.version>4.4.16</httpcore.version>
    <icu4j.version>72.1</icu4j.version>
    <jackson-bom.version>2.14.2</jackson-bom.version>
    <!-- Override the version in Jakarta EE 9 BOM: -->
    <jakarta-activation.version>2.1.1</jakarta-activation.version>
    <jakarta-mail.version>2.1.1</jakarta-mail.version>
    <!-- BOM with Jakarta EE 9 APIs: -->
    <jakartaee-bom.version>9.0.0</jakartaee-bom.version>
    <!-- No BOM for Java EE 8 APIs, so we list them separately: -->
    <javax-activation.version>1.2.0</javax-activation.version>
    <javax-inject.version>1</javax-inject.version>
    <javax-jms.version>2.0.1</javax-jms.version>
    <javax-mail.version>1.6.2</javax-mail.version>
    <javax-persistence.version>2.2</javax-persistence.version>
    <javax-servlet.version>4.0.1</javax-servlet.version>
    <javax-servlet-jsp.version>2.3.3</javax-servlet-jsp.version>
    <jansi.version>2.4.0</jansi.version>
    <java-allocation-instrumenter.version>3.3.0</java-allocation-instrumenter.version>
    <jconsole.version>1.7.0</jconsole.version>
    <jctools.version>4.0.1</jctools.version>
    <je.version>18.3.12</je.version>
    <jeromq.version>0.5.3</jeromq.version>
    <jetty.version>9.4.51.v20230217</jetty.version>
    <jmdns.version>3.5.8</jmdns.version>
    <jmh.version>1.36</jmh.version>
    <jna.version>5.12.1</jna.version>
    <json-unit.version>2.36.1</json-unit.version>
    <junit.version>4.13.2</junit.version>
    <junit-jupiter.version>5.9.2</junit-jupiter.version>
    <junit-pioneer.version>1.9.1</junit-pioneer.version>
    <kafka.version>3.4.0</kafka.version>
    <kubernetes-client.version>5.12.2</kubernetes-client.version>
    <lightcouch.version>0.2.0</lightcouch.version>
    <log4j.version>1.2.17</log4j.version>
    <log4j2-cachefile-transformer.version>2.15.0</log4j2-cachefile-transformer.version>
    <log4j2-ecs-layout.version>1.5.0</log4j2-ecs-layout.version>
    <logback.version>1.2.11</logback.version>
    <maven.version>3.9.0</maven.version>
    <mockito.version>4.11.0</mockito.version>
    <mongodb.version>4.9.0</mongodb.version>
    <netty.version>4.1.90.Final</netty.version>
    <org.eclipse.osgi.version>3.13.0.v20180226-1711</org.eclipse.osgi.version>
    <org.eclipse.persistence.version>2.7.11</org.eclipse.persistence.version>
    <oro.version>2.0.8</oro.version>
    <!-- The OSGi API version MUST always be the MINIMUM version Log4j supports: -->
    <osgi.api.version>6.0.0</osgi.api.version>
    <pax-exam.version>4.13.5</pax-exam.version>
    <plexus-utils.version>3.5.0</plexus-utils.version>
    <slf4j.version>1.7.36</slf4j.version>
    <spring-boot.version>2.7.9</spring-boot.version>
    <spring-framework.version>5.3.25</spring-framework.version>
    <system-stubs.version>2.0.2</system-stubs.version>
    <tomcat-juli.version>10.0.27</tomcat-juli.version>
    <velocity.version>1.7</velocity.version>
    <wiremock.version>2.35.0</wiremock.version>
    <woodstox.version>6.5.0</woodstox.version>
    <xmlunit.version>2.9.1</xmlunit.version>
    <xz.version>1.9</xz.version>

  </properties>

  <dependencyManagement>
    <dependencies>

      <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-bom</artifactId>
        <version>${project.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

      <dependency>
        <groupId>org.ow2.asm</groupId>
        <artifactId>asm-bom</artifactId>
        <version>${asm.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

      <dependency>
        <groupId>org.codehaus.groovy</groupId>
        <artifactId>groovy-bom</artifactId>
        <version>${groovy.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

      <dependency>
        <groupId>com.fasterxml.jackson</groupId>
        <artifactId>jackson-bom</artifactId>
        <version>${jackson-bom.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

      <dependency>
        <groupId>jakarta.platform</groupId>
        <artifactId>jakarta.jakartaee-bom</artifactId>
        <version>${jakartaee-bom.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

      <dependency>
        <groupId>org.eclipse.jetty</groupId>
        <artifactId>jetty-bom</artifactId>
        <version>${jetty.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

      <dependency>
        <groupId>org.junit</groupId>
        <artifactId>junit-bom</artifactId>
        <version>${junit-jupiter.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

      <dependency>
        <groupId>io.fabric8</groupId>
        <artifactId>kubernetes-client-bom</artifactId>
        <version>${kubernetes-client.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

      <dependency>
        <groupId>io.netty</groupId>
        <artifactId>netty-bom</artifactId>
        <version>${netty.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

      <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-framework-bom</artifactId>
        <version>${spring-framework.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>

      <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-api-java9</artifactId>
        <version>${project.version}</version>
        <type>zip</type>
      </dependency>

      <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core-java9</artifactId>
        <version>${project.version}</version>
        <type>zip</type>
      </dependency>

      <dependency>
        <groupId>org.apache.activemq</groupId>
        <artifactId>activemq-broker</artifactId>
        <version>${activemq.version}</version>
      </dependency>

      <dependency>
        <groupId>org.eclipse.angus</groupId>
        <artifactId>angus-activation</artifactId>
        <version>${angus-activation.version}</version>
      </dependency>

      <dependency>
        <groupId>org.assertj</groupId>
        <artifactId>assertj-core</artifactId>
        <version>${assertj.version}</version>
      </dependency>

      <dependency>
        <groupId>org.awaitility</groupId>
        <artifactId>awaitility</artifactId>
        <version>${awaitility.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache-extras.beanshell</groupId>
        <artifactId>bsh</artifactId>
        <version>${bsh.version}</version>
      </dependency>

      <dependency>
        <groupId>org.mongodb</groupId>
        <artifactId>bson</artifactId>
        <version>${mongodb.version}</version>
      </dependency>

      <dependency>
        <groupId>net.bytebuddy</groupId>
        <artifactId>byte-buddy</artifactId>
        <version>${byte-buddy.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.cassandra</groupId>
        <artifactId>cassandra-all</artifactId>
        <version>${cassandra.version}</version>
      </dependency>

      <dependency>
        <groupId>com.datastax.cassandra</groupId>
        <artifactId>cassandra-driver-core</artifactId>
        <version>${cassandra-driver.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.cassandra</groupId>
        <artifactId>cassandra-thrift</artifactId>
        <version>${cassandra.version}</version>
      </dependency>

      <dependency>
        <groupId>commons-codec</groupId>
        <artifactId>commons-codec</artifactId>
        <version>${commons-codec.version}</version>
      </dependency>

      <!-- Used for compressing to formats other than `zip` and `gz`: -->
      <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-compress</artifactId>
        <version>${commons-compress.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-csv</artifactId>
        <version>${commons-csv.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-dbcp2</artifactId>
        <version>${commons-dbcp2.version}</version>
      </dependency>

      <dependency>
        <groupId>commons-httpclient</groupId>
        <artifactId>commons-httpclient</artifactId>
        <version>${commons-httpclient.version}</version>
      </dependency>

      <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>${commons-io.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
        <version>${commons-lang3.version}</version>
      </dependency>

      <dependency>
        <groupId>commons-logging</groupId>
        <artifactId>commons-logging</artifactId>
        <version>${commons-logging.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-pool2</artifactId>
        <version>${commons-pool2.version}</version>
      </dependency>

      <dependency>
        <groupId>de.flapdoodle.embed</groupId>
        <artifactId>de.flapdoodle.embed.mongo</artifactId>
        <version>${embedded-mongo.version}</version>
      </dependency>

      <dependency>
        <groupId>com.conversantmedia</groupId>
        <artifactId>disruptor</artifactId>
        <version>${conversant.disruptor.version}</version>
      </dependency>

      <dependency>
        <groupId>com.lmax</groupId>
        <artifactId>disruptor</artifactId>
        <version>${disruptor.version}</version>
      </dependency>

      <dependency>
        <groupId>org.elasticsearch.client</groupId>
        <artifactId>elasticsearch-rest-high-level-client</artifactId>
        <version>${elasticsearch.version}</version>
      </dependency>

      <dependency>
        <groupId>org.zapodot</groupId>
        <artifactId>embedded-ldap-junit</artifactId>
        <version>${embedded-ldap.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.flume.flume-ng-channels</groupId>
        <artifactId>flume-file-channel</artifactId>
        <version>${flume.version}</version>
        <exclusions>
          <exclusion>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
          </exclusion>
          <exclusion>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
          </exclusion>
          <exclusion>
            <groupId>org.mortbay.jetty</groupId>
            <artifactId>servlet-api</artifactId>
          </exclusion>
          <exclusion>
            <groupId>org.mortbay.jetty</groupId>
            <artifactId>servlet-api-2.5</artifactId>
          </exclusion>
          <exclusion>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
          </exclusion>
        </exclusions>
      </dependency>

      <dependency>
        <groupId>org.apache.flume</groupId>
        <artifactId>flume-ng-core</artifactId>
        <version>${flume.version}</version>
        <exclusions>
          <exclusion>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
          </exclusion>
          <exclusion>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
          </exclusion>
        </exclusions>
      </dependency>

      <dependency>
        <groupId>org.apache.flume</groupId>
        <artifactId>flume-ng-embedded-agent</artifactId>
        <version>${flume.version}</version>
        <exclusions>
          <exclusion>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-core-asl</artifactId>
          </exclusion>
          <exclusion>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
          </exclusion>
          <exclusion>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
          </exclusion>
          <exclusion>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
          </exclusion>
        </exclusions>
      </dependency>

      <dependency>
        <groupId>org.apache.flume</groupId>
        <artifactId>flume-ng-node</artifactId>
        <version>${flume.version}</version>
        <exclusions>
          <exclusion>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-core-asl</artifactId>
          </exclusion>
          <exclusion>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
          </exclusion>
          <exclusion>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
          </exclusion>
          <exclusion>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
          </exclusion>
        </exclusions>
      </dependency>

      <dependency>
        <groupId>org.apache.flume</groupId>
        <artifactId>flume-ng-sdk</artifactId>
        <version>${flume.version}</version>
        <exclusions>
          <exclusion>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-core-asl</artifactId>
          </exclusion>
          <exclusion>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
          </exclusion>
        </exclusions>
      </dependency>

      <!-- Transitive dependency: setting upper bound of declared versions -->
      <dependency>
        <groupId>com.google.guava</groupId>
        <artifactId>guava</artifactId>
        <version>${guava.version}</version>
      </dependency>

      <dependency>
        <groupId>com.google.guava</groupId>
        <!-- https://javadoc.io/doc/com.google.guava/guava-testlib/latest/com/google/common/testing/TestLogHandler.html used in log4j-to-jul tests -->
        <artifactId>guava-testlib</artifactId>
        <version>${guava.version}</version>
      </dependency>

      <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
        <version>${h2.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-core</artifactId>
        <version>${hadoop.version}</version>
        <exclusions>
          <exclusion>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-core-asl</artifactId>
          </exclusion>
          <exclusion>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
          </exclusion>
          <exclusion>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
          </exclusion>
          <exclusion>
            <groupId>org.mortbay.jetty</groupId>
            <artifactId>servlet-api</artifactId>
          </exclusion>
        </exclusions>
      </dependency>

      <dependency>
        <groupId>org.hamcrest</groupId>
        <artifactId>hamcrest</artifactId>
        <version>${hamcrest.version}</version>
      </dependency>

      <dependency>
        <groupId>org.hamcrest</groupId>
        <artifactId>hamcrest-core</artifactId>
        <version>${hamcrest.version}</version>
      </dependency>

      <dependency>
        <groupId>org.hamcrest</groupId>
        <artifactId>hamcrest-library</artifactId>
        <version>${hamcrest.version}</version>
      </dependency>

      <dependency>
        <groupId>org.hdrhistogram</groupId>
        <artifactId>HdrHistogram</artifactId>
        <version>${HdrHistogram.version}</version>
      </dependency>

      <dependency>
        <groupId>org.hsqldb</groupId>
        <artifactId>hsqldb</artifactId>
        <version>${hsqldb.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>${httpclient.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpcore</artifactId>
        <version>${httpcore.version}</version>
      </dependency>

      <dependency>
        <groupId>jakarta.activation</groupId>
        <artifactId>jakarta.activation-api</artifactId>
        <version>${jakarta-activation.version}</version>
      </dependency>

      <dependency>
        <groupId>org.eclipse.angus</groupId>
        <artifactId>jakarta.mail</artifactId>
        <version>${angus-mail.version}</version>
      </dependency>

      <dependency>
        <groupId>jakarta.mail</groupId>
        <artifactId>jakarta.mail-api</artifactId>
        <version>${jakarta-mail.version}</version>
      </dependency>

      <dependency>
        <groupId>org.fusesource.jansi</groupId>
        <artifactId>jansi</artifactId>
        <version>${jansi.version}</version>
      </dependency>

      <!-- Used for garbage-free tests: -->
      <dependency>
        <groupId>com.google.code.java-allocation-instrumenter</groupId>
        <artifactId>java-allocation-instrumenter</artifactId>
        <version>${java-allocation-instrumenter.version}</version>
      </dependency>

      <dependency>
        <groupId>javax.activation</groupId>
        <artifactId>javax.activation-api</artifactId>
        <version>${javax-activation.version}</version>
      </dependency>

      <dependency>
        <groupId>javax.inject</groupId>
        <artifactId>javax.inject</artifactId>
        <version>${javax-inject.version}</version>
      </dependency>

      <dependency>
        <groupId>javax.jms</groupId>
        <artifactId>javax.jms-api</artifactId>
        <version>${javax-jms.version}</version>
      </dependency>

      <dependency>
        <groupId>com.sun.mail</groupId>
        <artifactId>javax.mail</artifactId>
        <version>${javax-mail.version}</version>
      </dependency>

      <dependency>
        <groupId>javax.mail</groupId>
        <artifactId>javax.mail-api</artifactId>
        <version>${javax-mail.version}</version>
      </dependency>

      <dependency>
        <groupId>javax.persistence</groupId>
        <artifactId>javax.persistence-api</artifactId>
        <version>${javax-persistence.version}</version>
      </dependency>

      <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>javax.servlet.jsp-api</artifactId>
        <version>${javax-servlet-jsp.version}</version>
      </dependency>

      <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>${javax-servlet.version}</version>
      </dependency>

      <dependency>
        <groupId>com.sun</groupId>
        <artifactId>jconsole</artifactId>
        <version>${jconsole.version}</version>
      </dependency>

      <dependency>
        <groupId>org.jctools</groupId>
        <artifactId>jctools-core</artifactId>
        <version>${jctools.version}</version>
      </dependency>

      <dependency>
        <groupId>com.sleepycat</groupId>
        <artifactId>je</artifactId>
        <version>${je.version}</version>
      </dependency>

      <dependency>
        <groupId>org.zeromq</groupId>
        <artifactId>jeromq</artifactId>
        <version>${jeromq.version}</version>
      </dependency>

      <!-- Zeroconf advertiser tests: -->
      <dependency>
        <groupId>org.jmdns</groupId>
        <artifactId>jmdns</artifactId>
        <version>${jmdns.version}</version>
      </dependency>

      <dependency>
        <groupId>org.openjdk.jmh</groupId>
        <artifactId>jmh-core</artifactId>
        <version>${jmh.version}</version>
      </dependency>

      <dependency>
        <groupId>org.openjdk.jmh</groupId>
        <artifactId>jmh-generator-annprocess</artifactId>
        <version>${jmh.version}</version>
      </dependency>

      <dependency>
        <groupId>net.java.dev.jna</groupId>
        <artifactId>jna</artifactId>
        <version>${jna.version}</version>
      </dependency>

      <dependency>
        <groupId>net.javacrumbs.json-unit</groupId>
        <artifactId>json-unit</artifactId>
        <version>${json-unit.version}</version>
      </dependency>

      <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>${junit.version}</version>
      </dependency>

      <dependency>
        <groupId>org.junit-pioneer</groupId>
        <artifactId>junit-pioneer</artifactId>
        <version>${junit-pioneer.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.kafka</groupId>
        <artifactId>kafka-clients</artifactId>
        <version>${kafka.version}</version>
      </dependency>

      <dependency>
        <groupId>org.lightcouch</groupId>
        <artifactId>lightcouch</artifactId>
        <version>${lightcouch.version}</version>
      </dependency>

      <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>${log4j.version}</version>
      </dependency>

      <!-- Used for testing `JsonTemplateLayout`: -->
      <dependency>
        <groupId>co.elastic.logging</groupId>
        <artifactId>log4j2-ecs-layout</artifactId>
        <version>${log4j2-ecs-layout.version}</version>
      </dependency>

      <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
        <version>${logback.version}</version>
      </dependency>

      <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
        <version>${logback.version}</version>
        <type>test-jar</type>
      </dependency>

      <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-core</artifactId>
        <version>${logback.version}</version>
      </dependency>

      <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-core</artifactId>
        <version>${logback.version}</version>
        <type>test-jar</type>
      </dependency>

      <dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-core</artifactId>
        <version>${maven.version}</version>
      </dependency>

      <dependency>
        <groupId>org.mockito</groupId>
        <artifactId>mockito-core</artifactId>
        <version>${mockito.version}</version>
      </dependency>

      <dependency>
        <groupId>org.mockito</groupId>
        <artifactId>mockito-inline</artifactId>
        <version>${mockito.version}</version>
      </dependency>

      <dependency>
        <groupId>org.mockito</groupId>
        <artifactId>mockito-junit-jupiter</artifactId>
        <version>${mockito.version}</version>
      </dependency>

      <dependency>
        <groupId>org.mongodb</groupId>
        <artifactId>mongodb-driver-legacy</artifactId>
        <version>${mongodb.version}</version>
      </dependency>

      <dependency>
        <groupId>org.mongodb</groupId>
        <artifactId>mongodb-driver-sync</artifactId>
        <version>${mongodb.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.felix</groupId>
        <artifactId>org.apache.felix.framework</artifactId>
        <version>${felix.version}</version>
      </dependency>

      <dependency>
        <groupId>org.eclipse.tycho</groupId>
        <artifactId>org.eclipse.osgi</artifactId>
        <version>${org.eclipse.osgi.version}</version>
      </dependency>

      <dependency>
        <groupId>org.eclipse.persistence</groupId>
        <artifactId>org.eclipse.persistence.jpa</artifactId>
        <version>${org.eclipse.persistence.version}</version>
        <exclusions>
          <!-- A copy of `javax.persistence:javax.persistence-api`: -->
          <exclusion>
            <groupId>org.eclipse.persistence</groupId>
            <artifactId>jakarta.persistence</artifactId>
          </exclusion>
        </exclusions>
      </dependency>

      <dependency>
        <groupId>org.osgi</groupId>
        <artifactId>org.osgi.core</artifactId>
        <version>${osgi.api.version}</version>
      </dependency>

      <dependency>
        <groupId>oro</groupId>
        <artifactId>oro</artifactId>
        <version>${oro.version}</version>
      </dependency>

      <dependency>
        <groupId>org.ops4j.pax.exam</groupId>
        <artifactId>pax-exam</artifactId>
        <version>${pax-exam.version}</version>
      </dependency>

      <dependency>
        <groupId>org.ops4j.pax.exam</groupId>
        <artifactId>pax-exam-container-native</artifactId>
        <version>${pax-exam.version}</version>
      </dependency>

      <dependency>
        <groupId>org.ops4j.pax.exam</groupId>
        <artifactId>pax-exam-junit4</artifactId>
        <version>${pax-exam.version}</version>
      </dependency>

      <dependency>
        <groupId>org.ops4j.pax.exam</groupId>
        <artifactId>pax-exam-link-assembly</artifactId>
        <version>${pax-exam.version}</version>
      </dependency>

      <dependency>
        <groupId>org.ops4j.pax.exam</groupId>
        <artifactId>pax-exam-spi</artifactId>
        <version>${pax-exam.version}</version>
      </dependency>

      <dependency>
        <groupId>org.codehaus.plexus</groupId>
        <artifactId>plexus-utils</artifactId>
        <version>${plexus-utils.version}</version>
      </dependency>

      <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>${slf4j.version}</version>
      </dependency>

      <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-ext</artifactId>
        <version>${slf4j.version}</version>
      </dependency>

      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot</artifactId>
        <version>${spring-boot.version}</version>
      </dependency>

      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <version>${spring-boot.version}</version>
        <exclusions>
          <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-logging</artifactId>
          </exclusion>
        </exclusions>
      </dependency>

      <dependency>
        <groupId>uk.org.webcompere</groupId>
        <artifactId>system-stubs-core</artifactId>
        <version>${system-stubs.version}</version>
      </dependency>

      <!-- Environment and system properties support for JUnit Jupiter: -->
      <dependency>
        <groupId>uk.org.webcompere</groupId>
        <artifactId>system-stubs-jupiter</artifactId>
        <version>${system-stubs.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.tomcat</groupId>
        <artifactId>tomcat-juli</artifactId>
        <version>${tomcat-juli.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.velocity</groupId>
        <artifactId>velocity</artifactId>
        <version>${velocity.version}</version>
      </dependency>

      <!-- Used for testing `HttpAppender`: -->
      <dependency>
        <groupId>com.github.tomakehurst</groupId>
        <artifactId>wiremock-jre8</artifactId>
        <version>${wiremock.version}</version>
      </dependency>

      <dependency>
        <groupId>com.fasterxml.woodstox</groupId>
        <artifactId>woodstox-core</artifactId>
        <version>${woodstox.version}</version>
      </dependency>

      <dependency>
        <groupId>org.xmlunit</groupId>
        <artifactId>xmlunit-core</artifactId>
        <version>${xmlunit.version}</version>
      </dependency>

      <dependency>
        <groupId>org.xmlunit</groupId>
        <artifactId>xmlunit-matchers</artifactId>
        <version>${xmlunit.version}</version>
      </dependency>

      <dependency>
        <groupId>org.tukaani</groupId>
        <artifactId>xz</artifactId>
        <version>${xz.version}</version>
      </dependency>

    </dependencies>
  </dependencyManagement>

  <build>

    <defaultGoal>clean verify</defaultGoal>

    <pluginManagement>
      <plugins>

        <plugin>
          <groupId>org.codehaus.mojo</groupId>
          <artifactId>build-helper-maven-plugin</artifactId>
          <version>${build-helper-maven-plugin.version}</version>
        </plugin>

        <!-- used by `log4j-distribution` module which is enabled via `apache-release` profile: -->
        <plugin>
          <groupId>net.nicoulaj.maven.plugins</groupId>
          <artifactId>checksum-maven-plugin</artifactId>
          <version>${checksum-maven-plugin.version}</version>
        </plugin>

        <!-- used by `docker` profile in `log4j-layout-template-json-test`: -->
        <plugin>
          <groupId>io.fabric8</groupId>
          <artifactId>docker-maven-plugin</artifactId>
          <version>${docker-maven-plugin.version}</version>
        </plugin>

        <plugin>
          <groupId>org.ops4j.pax.exam</groupId>
          <artifactId>exam-maven-plugin</artifactId>
          <version>${exam-maven-plugin.version}</version>
        </plugin>

        <plugin>
          <groupId>org.apache.logging.log4j</groupId>
          <artifactId>log4j-changelog-maven-plugin</artifactId>
          <version>${log4j-tools.version}</version>
        </plugin>

        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-artifact-plugin</artifactId>
          <version>${maven-artifact-plugin.version}</version>
        </plugin>

        <plugin>
          <groupId>org.apache.felix</groupId>
          <artifactId>maven-bundle-plugin</artifactId>
          <version>${maven-bundle-plugin.version}</version>
          <extensions>true</extensions>
          <inherited>true</inherited>
          <executions>
            <execution>
              <goals>
                <goal>manifest</goal>
              </goals>
              <phase>process-classes</phase>
            </execution>
          </executions>
        </plugin>

        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-checkstyle-plugin</artifactId>
          <version>${maven-checkstyle-plugin.version}</version>
        </plugin>

        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-compiler-plugin</artifactId>
          <configuration>
            <source>${maven.compiler.source}</source>
            <target>${maven.compiler.target}</target>
            <parameters>true</parameters>
            <showDeprecation>true</showDeprecation>
            <showWarnings>true</showWarnings>
            <encoding>UTF-8</encoding>
            <fork>true</fork>
            <meminitial>256</meminitial>
            <maxmem>1024</maxmem>
            <compilerArguments>
              <Xmaxwarns>10000</Xmaxwarns>
              <Xlint/>
            </compilerArguments>
          </configuration>
        </plugin>

        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-dependency-plugin</artifactId>
          <version>${maven-dependency-plugin.version}</version>
        </plugin>

        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-enforcer-plugin</artifactId>
          <version>${maven-enforcer-plugin.version}</version>
        </plugin>

        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-jar-plugin</artifactId>
          <executions>
            <execution>
              <id>default-jar</id>
              <goals>
                <goal>jar</goal>
              </goals>
              <configuration>
                <archive>
                  <manifestFile>${manifestfile}</manifestFile>
                  <manifestEntries>
                    <Specification-Title>${project.name}</Specification-Title>
                    <Specification-Version>${project.version}</Specification-Version>
                    <Specification-Vendor>${project.organization.name}</Specification-Vendor>
                    <Implementation-Title>${project.name}</Implementation-Title>
                    <Implementation-Version>${project.version}</Implementation-Version>
                    <Implementation-Vendor>${project.organization.name}</Implementation-Vendor>
                    <Implementation-Vendor-Id>org.apache</Implementation-Vendor-Id>
                    <X-Compile-Source-JDK>${maven.compiler.source}</X-Compile-Source-JDK>
                    <X-Compile-Target-JDK>${maven.compiler.target}</X-Compile-Target-JDK>
                    <Automatic-Module-Name>${module.name}</Automatic-Module-Name>
                  </manifestEntries>
                </archive>
              </configuration>
            </execution>
          </executions>
        </plugin>

        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-pmd-plugin</artifactId>
          <version>${maven-pmd-plugin.version}</version>
        </plugin>

        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-scm-plugin</artifactId>
          <version>${maven-scm-plugin.version}</version>
        </plugin>

        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-source-plugin</artifactId>
          <version>${maven-source-plugin.version}</version>
        </plugin>

        <plugin>
          <groupId>net.sourceforge.maven-taglib</groupId>
          <artifactId>maven-taglib-plugin</artifactId>
          <version>${maven-taglib-plugin.version}</version>
        </plugin>

        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-toolchains-plugin</artifactId>
          <version>${maven-toolchains-plugin.version}</version>
        </plugin>

        <plugin>
          <groupId>com.github.spotbugs</groupId>
          <artifactId>spotbugs-maven-plugin</artifactId>
          <version>${spotbugs-maven-plugin.version}</version>
        </plugin>

        <plugin>
          <groupId>com.diffplug.spotless</groupId>
          <artifactId>spotless-maven-plugin</artifactId>
          <version>${spotless-maven-plugin.version}</version>
        </plugin>

        <plugin>
          <groupId>org.codehaus.mojo</groupId>
          <artifactId>xml-maven-plugin</artifactId>
          <version>${xml-maven-plugin.version}</version>
        </plugin>
      </plugins>
    </pluginManagement>

    <plugins>

      <!-- Apache RAT (Release Audit Tool) check to verify licenses.
           `apache-rat-plugin`: https://creadur.apache.org/rat/apache-rat-plugin/
           Release Audit Tool: https://creadur.apache.org/rat/index.html -->
      <plugin>
        <groupId>org.apache.rat</groupId>
        <artifactId>apache-rat-plugin</artifactId>
        <configuration>
          <consoleOutput>true</consoleOutput>
          <excludes>
            <exclude>**/target/**/*</exclude>
            <!-- Matches other RAT configurations in this POM -->
            <exclude>src/main/resources/META-INF/services/**/*</exclude>
            <!-- IntelliJ files -->
            <exclude>.idea/**/*</exclude>
            <exclude>**/*.iml</exclude>
            <exclude>src/test/resources/**/*</exclude>
            <!-- IDE settings imports -->
            <exclude>src/ide/**</exclude>
            <!-- does it even make sense to apply a license to a GPG signature? -->
            <exclude>**/*.asc</exclude>
            <!-- jQuery is MIT-licensed, but RAT can't figure it out -->
            <exclude>src/site/resources/js/jquery.js</exclude>
            <exclude>src/site/resources/js/jquery.min.js</exclude>
            <!-- Generated files -->
            <exclude>log4j-distribution/target/**/*</exclude>
            <exclude>log4j-distribution/.project</exclude>
            <exclude>log4j-distribution/.settings/**</exclude>
            <exclude>**/.toDelete</exclude>
            <exclude>velocity.log</exclude>
            <!-- Other -->
            <exclude>felix-cache/**</exclude>
            <exclude>**/README.md</exclude>
            <exclude>SECURITY.md</exclude>
            <exclude>.java-version</exclude>
            <exclude>**/*.yml</exclude>
            <exclude>**/*.yaml</exclude>
            <exclude>**/*.json</exclude>
            <excllude>**/images/*.drawio</excllude>
            <exclude>**/fluent-bit.conf</exclude>
            <exclude>**/rabbitmq.config</exclude>
            <exclude>**/MANIFEST.MF</exclude>
            <exclude>.surefire-*</exclude>
            <!-- License headers in GitHub templates pollute the prompt displayed to the user: -->
            <exclude>.github/ISSUE_TEMPLATE/*.md</exclude>
            <exclude>.github/pull_request_template.md</exclude>
          </excludes>
        </configuration>
        <executions>
          <execution>
            <goals>
              <goal>check</goal>
            </goals>
            <phase>validate</phase>
          </execution>
        </executions>
      </plugin>

      <!-- Ensure that version for each dependency resolved during a build, is equal to or higher than all transitive dependency declarations.
           A failure here requires adding the dependency to the dependency management. -->
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-enforcer-plugin</artifactId>
        <executions>
          <execution>
            <id>enforce-upper-bound-deps</id>
            <goals>
              <goal>enforce</goal>
            </goals>
            <configuration>
              <rules>
                <requireUpperBoundDeps/>
              </rules>
            </configuration>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-source-plugin</artifactId>
        <executions>
          <execution>
            <id>attach-sources</id>
            <goals>
              <goal>jar-no-fork</goal>
              <goal>test-jar-no-fork</goal>
            </goals>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-checkstyle-plugin</artifactId>
        <dependencies>
          <dependency>
            <groupId>com.puppycrawl.tools</groupId>
            <artifactId>checkstyle</artifactId>
            <version>${checkstyle.version}</version>
          </dependency>
        </dependencies>
      </plugin>

      <plugin>
        <groupId>com.diffplug.spotless</groupId>
        <artifactId>spotless-maven-plugin</artifactId>
        <configuration>
          <ratchetFrom>HEAD~31</ratchetFrom>
          <java>
            <licenseHeader>
              <file>${log4jParentDir}/checkstyle-header.txt</file>
            </licenseHeader>
            <trimTrailingWhitespace/>
            <endWithNewline/>
            <indent>
              <spaces>true</spaces>
              <spacesPerTab>4</spacesPerTab>
            </indent>
            <importOrder>
              <order>java,org,com,\#</order>
            </importOrder>
          </java>
          <pom>
            <sortPom>
              <expandEmptyElements>false</expandEmptyElements>
            </sortPom>
          </pom>
        </configuration>
        <executions>
          <execution>
            <id>default-spotless</id>
            <goals>
              <goal>check</goal>
            </goals>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <groupId>com.github.spotbugs</groupId>
        <artifactId>spotbugs-maven-plugin</artifactId>
        <configuration>
          <plugins>
            <plugin>
              <groupId>com.h3xstream.findsecbugs</groupId>
              <artifactId>findsecbugs-plugin</artifactId>
              <version>${findsecbugs-plugin.version}</version>
            </plugin>
          </plugins>
          <excludeFilterFile>${log4jParentDir}/findbugs-exclude-filter.xml</excludeFilterFile>
          <fork>true</fork>
          <effort>Default</effort>
          <threshold>Normal</threshold>
        </configuration>
      </plugin>

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-failsafe-plugin</artifactId>
        <configuration>
          <systemPropertyVariables>
            <java.awt.headless>true</java.awt.headless>
          </systemPropertyVariables>
          <argLine>-Xms256m -Xmx1024m</argLine>
          <forkCount>1</forkCount>
          <reuseForks>false</reuseForks>
          <encoding>UTF-8</encoding>
        </configuration>
        <executions>
          <execution>
            <goals>
              <goal>integration-test</goal>
              <goal>verify</goal>
            </goals>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-surefire-plugin</artifactId>
        <configuration>
          <systemPropertyVariables>
            <java.awt.headless>true</java.awt.headless>
          </systemPropertyVariables>
          <forkCount>1</forkCount>
          <reuseForks>false</reuseForks>
        </configuration>
      </plugin>

      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>xml-maven-plugin</artifactId>
        <inherited>false</inherited>
        <configuration>
          <validationSets>
            <validationSet>
              <dir>src/changelog</dir>
              <includes>**/*.xml</includes>
              <publicId>http://logging.apache.org/log4j/changelog</publicId>
              <systemId>https://logging.apache.org/log4j/changelog-0.1.1.xsd</systemId>
              <validating>true</validating>
            </validationSet>
          </validationSets>
        </configuration>
        <executions>
          <execution>
            <goals>
              <goal>validate</goal>
            </goals>
            <phase>validate</phase>
          </execution>
        </executions>
      </plugin>

      <!-- ███████ ████████  █████  ██████  ████████        ███████ ██ ████████ ███████
           ██         ██    ██   ██ ██   ██    ██    ██     ██      ██    ██    ██
           ███████    ██    ███████ ██████     ██           ███████ ██    ██    █████
                ██    ██    ██   ██ ██   ██    ██    ██          ██ ██    ██    ██
           ███████    ██    ██   ██ ██   ██    ██           ███████ ██    ██    ███████

           This section consists of plugins responsible for generating the site.
           Note that only this (i.e., the parent) module is supposed to have a `site` goal, it is skipped for all other modules! -->

      <!-- Define `currentYear` property used while generating the site -->
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>build-helper-maven-plugin</artifactId>
        <executions>
          <execution>
            <id>define-currentYear-property</id>
            <goals>
              <goal>timestamp-property</goal>
            </goals>
            <phase>pre-site</phase>
            <configuration>
              <name>currentYear</name>
              <pattern>yyyy</pattern>
              <locale>en_US</locale>
            </configuration>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-javadoc-plugin</artifactId>
        <configuration combine.self="override">
          <!-- `notimestamp` avoids `diff` noise and is required for reproducible builds: https://maven.apache.org/guides/mini/guide-reproducible-builds.html -->
          <notimestamp>true</notimestamp>
          <skip>${javadoc.skip}</skip>
          <bottom><![CDATA[<p align="center">
              Copyright &copy; {inceptionYear}-{currentYear} {organizationName}.
              All Rights Reserved.<br/>
              Apache Logging, Apache Log4j, Log4j, Apache, the Apache feather logo, the Apache Logging project logo, and the Apache Log4j logo are trademarks of The Apache Software Foundation.
            </p>]]></bottom>
          <failOnError>false</failOnError>
        </configuration>
        <executions>
          <execution>
            <id>generate-site-javadoc</id>
            <goals>
              <goal>javadoc-no-fork</goal>
            </goals>
            <phase>pre-site</phase>
          </execution>
        </executions>
      </plugin>

      <!-- Export AsciiDoc-formatted sources to `target/generated-sources/site/asciidoc/release-notes` -->
      <plugin>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-changelog-maven-plugin</artifactId>
        <inherited>false</inherited>
        <configuration>
          <outputDirectory>${project.build.directory}/generated-sources/site/asciidoc/release-notes</outputDirectory>
          <indexTemplates>
            <template>
              <source>.index.adoc.ftl</source>
            </template>
          </indexTemplates>
          <changelogTemplates>
            <template>
              <source>.release-notes.adoc.ftl</source>
              <target>%v.adoc</target>
            </template>
          </changelogTemplates>
        </configuration>
        <executions>
          <execution>
            <id>generate-changelog</id>
            <goals>
              <goal>export</goal>
            </goals>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-resources-plugin</artifactId>
        <executions>
          <!-- Copy `src/site` to `target/generated-sources/site` -->
          <execution>
            <id>copy-site</id>
            <goals>
              <goal>copy-resources</goal>
            </goals>
            <phase>pre-site</phase>
            <inherited>false</inherited>
            <configuration>
              <outputDirectory>${project.build.directory}/generated-sources/site</outputDirectory>
              <resources>
                <resource>
                  <directory>${log4jParentDir}/src/site</directory>
                  <excludes>
                    <exclude>/resources/glyphicons-halflings-2-1.zip</exclude>
                    <exclude>/resources/logo/**/*</exclude>
                  </excludes>
                </resource>
              </resources>
            </configuration>
          </execution>
          <!-- Copy `target/site/apidocs` to the parent module's `target/site/javadoc/<artifactId>` folder -->
          <execution>
            <id>copy-javadoc</id>
            <goals>
              <goal>copy-resources</goal>
            </goals>
            <phase>site</phase>
            <configuration>
              <skip>${javadoc.skip}</skip>
              <outputDirectory>${log4jParentDir}/target/site/javadoc/${project.artifactId}</outputDirectory>
              <resources>
                <resource>
                  <directory>${project.build.directory}/site/apidocs</directory>
                </resource>
              </resources>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-project-info-reports-plugin</artifactId>
        <inherited>false</inherited>
        <executions>
          <execution>
            <id>team-list</id>
            <goals>
              <goal>team</goal>
            </goals>
            <phase>site</phase>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-site-plugin</artifactId>
        <inherited>false</inherited>
        <configuration combine.self="override">
          <skip>false</skip>
          <generateProjectInfo>false</generateProjectInfo>
          <generateReports>false</generateReports>
          <siteDirectory>${project.build.directory}/generated-sources/site</siteDirectory>
          <locales>en</locales>
          <!-- Exclude the navigation file for Maven 1 sites as it interferes with the site generation. -->
          <moduleExcludes>
            <xdoc>navigation.xml</xdoc>
          </moduleExcludes>
          <attributes>
            <!-- copy any site properties wanted in asciidoc files -->
            <Log4jReleaseVersion>${log4jReleaseVersion}</Log4jReleaseVersion>
            <Log4jReleaseVersionJava6>${log4jReleaseVersionJava6}</Log4jReleaseVersionJava6>
            <Log4jReleaseVersionJava7>${log4jReleaseVersionJava7}</Log4jReleaseVersionJava7>
            <Log4jReleaseManager>${log4jReleaseManager}</Log4jReleaseManager>
            <Log4jReleaseKey>${log4jReleaseKey}</Log4jReleaseKey>
          </attributes>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>org.asciidoctor</groupId>
            <artifactId>asciidoctor-maven-plugin</artifactId>
            <version>${asciidoctor-maven-plugin.version}</version>
          </dependency>
        </dependencies>
      </plugin>

      <!-- ███████ ███    ██ ██████         ███████ ██ ████████ ███████
           ██      ████   ██ ██   ██ ██     ██      ██    ██    ██
           █████   ██ ██  ██ ██   ██        ███████ ██    ██    █████
           ██      ██  ██ ██ ██   ██ ██          ██ ██    ██    ██
           ███████ ██   ████ ██████         ███████ ██    ██    ███████ -->

    </plugins>

  </build>

  <profiles>

    <!-- Shortcut to populate `src/changelog/<releaseVersion>` from `src/changelog/.<releaseVersionMajor>.x.x` -->
    <profile>
      <id>changelog-release</id>
      <build>
        <defaultGoal>validate</defaultGoal>
        <plugins>
          <plugin>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-changelog-maven-plugin</artifactId>
            <inherited>false</inherited>
            <configuration>
              <releaseVersion>${log4jReleaseVersion}</releaseVersion>
            </configuration>
            <executions>
              <execution>
                <id>changelog-release</id>
                <goals>
                  <goal>release</goal>
                </goals>
              </execution>
            </executions>
          </plugin>
        </plugins>
      </build>
    </profile>

    <!-- Shortcut to enable `log4j-distribution` module creating the release distribution containing artifacts, sources, etc. -->
    <profile>
      <id>apache-release</id>
      <modules>
        <module>log4j-distribution</module>
      </modules>
      <properties>
        <maven.test.skip>true</maven.test.skip>
        <spotless.check.skip>true</spotless.check.skip>
      </properties>
      <build>
        <plugins>
          <plugin>
            <artifactId>maven-assembly-plugin</artifactId>
            <executions>
              <execution>
                <id>source-release-assembly</id>
                <configuration>
                  <skipAssembly>true</skipAssembly>
                </configuration>
              </execution>
            </executions>
          </plugin>
        </plugins>
      </build>
    </profile>

    <profile>
      <id>java8-doclint-disabled</id>
      <activation>
        <jdk>[1.8,)</jdk>
      </activation>
      <properties>
        <javadoc.opts>-Xdoclint:none</javadoc.opts>
      </properties>
    </profile>

  </profiles>

</project>