pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
  Copyright 2021 Flyte Authors.

  Licensed 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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.flyte</groupId>
  <artifactId>flytekit-parent</artifactId>
  <version>0.3.16-SNAPSHOT</version>

  <packaging>pom</packaging>

  <name>Flytekit Java</name>
  <description>Flytekit Java is the Java/Scala SDK built on top of Flyte.</description>
  <url>https://github.com/flyteorg/flytekit-java</url>

  <licenses>
    <license>
      <name>Apache License, Version 2.0</name>
      <url>https://www.apache.org/licenses/LICENSE-2.0</url>
      <distribution>repo</distribution>
    </license>
  </licenses>

  <developers>
    <developer>
      <name>flytekit</name>
      <email>admin@flyte.org</email>
      <organization>Flyte</organization>
      <organizationUrl>https://flyte.org</organizationUrl>
    </developer>
  </developers>

  <modules>
    <module>flytekit-api</module>
    <module>flytekit-jackson</module>
    <module>flytekit-java</module>
    <module>flytekit-scala_2.12</module>
    <module>flytekit-scala_2.13</module>
    <module>flytekit-scala-tests</module>
    <module>flytekit-testing</module>
    <module>flytekit-examples</module>
    <module>flytekit-examples-scala</module>
    <module>flytekit-local-engine</module>
    <module>jflyte</module>
    <module>flyteidl-protos</module>
    <module>jflyte-api</module>
    <module>jflyte-aws</module>
    <module>jflyte-build</module>
    <module>jflyte-google-cloud</module>
    <module>integration-tests</module>
  </modules>

  <scm>
    <connection>scm:git:https://github.com/flyteorg/flytekit-java.git</connection>
    <developerConnection>scm:git:https://github.com/flyteorg/flytekit-java.git</developerConnection>
    <tag>HEAD</tag>
    <url>https://github.com/flyteorg/flytekit-java</url>
  </scm>

  <distributionManagement>
    <repository>
      <id>ossrh</id>
      <url>https://s01.oss.sonatype.org/service/local/staging/deploy/maven2/</url>
    </repository>
    <snapshotRepository>
      <id>ossrh</id>
      <url>https://s01.oss.sonatype.org/content/repositories/snapshots</url>
    </snapshotRepository>
  </distributionManagement>

  <properties>
    <auto-service.version>1.0-rc6</auto-service.version>
    <auto-value.version>1.8.2</auto-value.version>
    <grpc.version>1.40.1</grpc.version>
    <!-- must be aligned with netty version -->
    <!-- see: https://github.com/grpc/grpc-java/blob/master/SECURITY.md#netty -->
    <netty.tcnative.version>2.0.34.Final</netty.tcnative.version>
    <picocli.version>4.2.0</picocli.version>
    <protobuf.version>3.18.2</protobuf.version>
    <sl4j.version>1.7.32</sl4j.version>
    <spotless.version>2.21.0</spotless.version>
    <spotbugs.excludeFilterFile>spotbugs-exclude.xml</spotbugs.excludeFilterFile>
    <error_prone.version>2.10.0</error_prone.version>
    <!-- Using the error-prone-javac is required when running on JDK 8 -->
    <error_prone.javac.version>9+181-r4173-1</error_prone.javac.version>
    <junit.version>5.6.2</junit.version>

    <!-- has to be one liner, or errorprone doesn't work -->
    <error-prone-base-config><![CDATA[-Xplugin:ErrorProne -XepDisableWarningsInGeneratedCode -XepExcludedPaths:.*/generated-(test-)?sources/.*]]></error-prone-base-config>
    <error-prone-additional-args>-Xep:AutoValueImmutableFields:OFF -Xep:Var:ERROR</error-prone-additional-args>
  </properties>

  <dependencyManagement>
    <dependencies>
      <!-- modules -->
      <dependency>
        <groupId>org.flyte</groupId>
        <artifactId>flyteidl-protos</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.flyte</groupId>
        <artifactId>flytekit-api</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.flyte</groupId>
        <artifactId>flytekit-jackson</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.flyte</groupId>
        <artifactId>flytekit-java</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.flyte</groupId>
        <artifactId>flytekit-local-engine</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.flyte</groupId>
        <artifactId>flytekit-scala_2.12</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.flyte</groupId>
        <artifactId>flytekit-scala_2.13</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.flyte</groupId>
        <artifactId>flytekit-examples</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.flyte</groupId>
        <artifactId>flytekit-examples-scala</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.flyte</groupId>
        <artifactId>jflyte-api</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.flyte</groupId>
        <artifactId>jflyte</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.flyte</groupId>
        <artifactId>jflyte-aws</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.flyte</groupId>
        <artifactId>jflyte-build</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.flyte</groupId>
        <artifactId>jflyte-google-cloud</artifactId>
        <version>${project.version}</version>
      </dependency>

      <dependency>
        <groupId>io.grpc</groupId>
        <artifactId>grpc-bom</artifactId>
        <version>${grpc.version}</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
      <dependency>
        <groupId>io.netty</groupId>
        <artifactId>netty-tcnative-boringssl-static</artifactId>
        <version>${netty.tcnative.version}</version>
      </dependency>
      <dependency>
        <groupId>com.google.code.findbugs</groupId>
        <artifactId>jsr305</artifactId>
        <version>3.0.2</version>
      </dependency>
      <dependency>
        <groupId>com.google.errorprone</groupId>
        <artifactId>error_prone_annotations</artifactId>
        <version>${error_prone.version}</version>
      </dependency>
      <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>${sl4j.version}</version>
      </dependency>
      <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-simple</artifactId>
        <version>${sl4j.version}</version>
      </dependency>
      <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>jul-to-slf4j</artifactId>
        <version>${sl4j.version}</version>
      </dependency>
      <dependency>
        <groupId>com.google.protobuf</groupId>
        <artifactId>protobuf-java</artifactId>
        <version>${protobuf.version}</version>
      </dependency>
      <dependency>
        <groupId>com.google.auto.value</groupId>
        <artifactId>auto-value-annotations</artifactId>
        <version>${auto-value.version}</version>
      </dependency>
      <dependency>
        <groupId>com.google.auto.service</groupId>
        <artifactId>auto-service-annotations</artifactId>
        <version>${auto-service.version}</version>
      </dependency>
      <dependency>
        <groupId>info.picocli</groupId>
        <artifactId>picocli</artifactId>
        <version>${picocli.version}</version>
      </dependency>
      <dependency>
        <groupId>org.junit.jupiter</groupId>
        <artifactId>junit-jupiter</artifactId>
        <version>${junit.version}</version>
      </dependency>
      <dependency>
        <groupId>org.junit.vintage</groupId>
        <artifactId>junit-vintage-engine</artifactId>
        <version>${junit.version}</version>
      </dependency>
      <dependency>
        <groupId>org.hamcrest</groupId>
        <artifactId>hamcrest</artifactId>
        <version>2.2</version>
      </dependency>
      <dependency>
        <groupId>org.mockito</groupId>
        <artifactId>mockito-core</artifactId>
        <version>3.3.3</version>
      </dependency>
      <dependency>
        <groupId>com.github.marschall</groupId>
        <artifactId>memoryfilesystem</artifactId>
        <version>2.3.0</version>
        <scope>test</scope>
      </dependency>
    </dependencies>
  </dependencyManagement>

  <repositories>
    <repository>
      <releases>
        <enabled>false</enabled>
      </releases>
      <snapshots>
        <enabled>true</enabled>
      </snapshots>
      <id>apache.snapshots</id>
      <name>Apache Development Snapshot Repository</name>
      <url>https://repository.apache.org/content/repositories/snapshots/</url>
    </repository>
    <repository>
      <snapshots>
        <enabled>false</enabled>
      </snapshots>
      <id>ossrh</id>
      <name>Sonatype OSS</name>
      <url>https://oss.sonatype.org/content/repositories/releases/</url>
    </repository>
  </repositories>

  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.1</version>
          <configuration>
            <source>8</source>
            <target>8</target>
            <showWarnings>true</showWarnings>
            <showDeprecation>true</showDeprecation>
            <forceJavacCompilerUse>true</forceJavacCompilerUse>
            <failOnWarning>true</failOnWarning>
            <!-- The semantics of this option are reversed, see MCOMPILER-209. -->
            <useIncrementalCompilation>false</useIncrementalCompilation>
            <encoding>utf-8</encoding>
            <compilerArgs>
              <!-- for AutoValue reflection -->
              <arg>-parameters</arg>
              <arg>-Xlint:all</arg>
              <!-- disable not helpful warnings to fail on warnings -->
              <arg>-Xlint:-path</arg>
              <arg>-Xlint:-processing</arg>
              <!-- we don't care about classes being deserialized with different classpath -->
              <arg>-Xlint:-serial</arg>
              <arg>-implicit:class</arg>
              <!-- see https://stackoverflow.com/a/57004351 -->
              <arg>-Xpkginfo:always</arg>
            </compilerArgs>
            <annotationProcessorPaths>
              <path>
                <groupId>com.google.auto.value</groupId>
                <artifactId>auto-value</artifactId>
                <version>${auto-value.version}</version>
              </path>
              <path>
                <groupId>com.google.auto.service</groupId>
                <artifactId>auto-service</artifactId>
                <version>${auto-service.version}</version>
              </path>
              <path>
                <groupId>com.google.errorprone</groupId>
                <artifactId>error_prone_core</artifactId>
                <version>${error_prone.version}</version>
              </path>
            </annotationProcessorPaths>
          </configuration>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.2</version>
        </plugin>
        <plugin>
          <groupId>com.diffplug.spotless</groupId>
          <artifactId>spotless-maven-plugin</artifactId>
          <version>${spotless.version}</version>
          <configuration>
            <java>
              <licenseHeader>
                <!-- Specify either content or file, but not both -->
                <content><![CDATA[/*
 * Copyright 2021 Flyte Authors
 *
 * Licensed 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.
 */]]></content>
              </licenseHeader>
              <googleJavaFormat>
                <version>1.8</version>
                <style>GOOGLE</style>
              </googleJavaFormat>
              <removeUnusedImports />
            </java>
            <xml>
              <includes>
                <include>**/pom.xml</include>
                <include>**/src/**/*.xml</include>
              </includes>
              <licenseHeader>
                <content><![CDATA[<!--
  Copyright 2021 Flyte Authors.

  Licensed 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.
-->]]></content>
              </licenseHeader>
              <eclipse>
                <file>${maven.multiModuleProjectDirectory}/spotless.xmlformat.prefs</file>
              </eclipse>
            </xml>
            <scala>
              <scalafmt>
                <file>${maven.multiModuleProjectDirectory}/.scalafmt.conf</file>
              </scalafmt>
              <licenseHeader>
                <content><![CDATA[/*
 * Copyright 2021 Flyte Authors.
 *
 * Licensed 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.
 */]]></content>
              </licenseHeader>
            </scala>
            <pom>
              <!-- These are the defaults, you can override if you want -->
              <includes>
                <include>pom.xml</include>
              </includes>

              <sortPom>
                <encoding>UTF-8</encoding>
                <lineSeparator>${line.separator}</lineSeparator>
                <expandEmptyElements>false</expandEmptyElements>
                <spaceBeforeCloseEmptyElement>true</spaceBeforeCloseEmptyElement>
                <keepBlankLines>true</keepBlankLines>
                <nrOfIndentSpace>2</nrOfIndentSpace>
                <indentBlankLines>false</indentBlankLines>
                <indentSchemaLocation>false</indentSchemaLocation>
                <predefinedSortOrder>recommended_2008_06</predefinedSortOrder>
                <sortProperties>false</sortProperties>
                <sortModules>false</sortModules>
                <sortExecutions>false</sortExecutions>
              </sortPom>
            </pom>

            <formats>
              <format>
                <includes>
                  <include>**/src/**.xml</include>
                </includes>
                <!-- Files must end with a newline -->
                <endWithNewline />
              </format>
            </formats>
          </configuration>
          <executions>
            <execution>
              <goals>
                <goal>check</goal>
              </goals>
              <phase>verify</phase>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <groupId>com.spotify</groupId>
          <artifactId>dockerfile-maven-plugin</artifactId>
          <version>1.4.9</version>
          <executions>
            <execution>
              <id>default</id>
              <goals>
                <goal>build</goal>
                <goal>push</goal>
              </goals>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <groupId>com.github.spotbugs</groupId>
          <artifactId>spotbugs-maven-plugin</artifactId>
          <version>4.2.3</version>
          <configuration>
            <includeTests>true</includeTests>
            <effort>Max</effort>
            <threshold>Low</threshold>
            <failOnError>true</failOnError>
            <xmlOutput>true</xmlOutput>
          </configuration>
          <executions>
            <execution>
              <goals>
                <goal>check</goal>
              </goals>
              <phase>verify</phase>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <artifactId>maven-javadoc-plugin</artifactId>
          <version>3.2.0</version>
          <configuration>
            <show>private</show>
            <encoding>utf-8</encoding>
            <!--
            Generated proto classes contains a bug that produce invalid javadoc
            https://github.com/protocolbuffers/protobuf/issues/9612
            However we cannot just exclude the flyteidl.* package because maven central demands
            javadocs-jars
            -->
            <failOnWarnings>false</failOnWarnings>
          </configuration>
          <executions>
            <execution>
              <id>attach-javadocs</id>
              <goals>
                <goal>jar</goal>
              </goals>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <configuration>
            <encoding>utf-8</encoding>
          </configuration>
        </plugin>
        <plugin>
          <artifactId>maven-source-plugin</artifactId>
          <version>3.0.1</version>
          <executions>
            <execution>
              <id>attach-sources</id>
              <goals>
                <goal>jar-no-fork</goal>
              </goals>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <artifactId>maven-checkstyle-plugin</artifactId>
          <version>3.1.1</version>
          <configuration>
            <configLocation>checkstyle.xml</configLocation>
            <consoleOutput>true</consoleOutput>
            <!-- Remove or switch to false to keep building even with checkstyle errors -->
            <failOnViolation>true</failOnViolation>
            <logViolationsToConsole>true</logViolationsToConsole>
            <encoding>utf-8</encoding>
          </configuration>
          <executions>
            <execution>
              <goals>
                <goal>check</goal>
              </goals>
              <phase>verify</phase>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <groupId>org.apache.rat</groupId>
          <artifactId>apache-rat-plugin</artifactId>
          <version>0.13</version>
          <configuration>
            <includes>
              <include>**/*.java</include>
              <include>**/*.xml</include>
            </includes>
            <excludes>
              <!-- Generated during build to shade dependencies -->
              <exclude>**/dependency-reduced-pom.xml</exclude>
              <exclude>**/target/checkstyle-result.xml</exclude>
              <exclude>**/target/javadoc-bundle-options/javadoc-options-javadoc-resources.xml</exclude>
            </excludes>
          </configuration>
          <executions>
            <execution>
              <goals>
                <goal>check</goal>
              </goals>
              <phase>verify</phase>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <groupId>net.alchim31.maven</groupId>
          <artifactId>scala-maven-plugin</artifactId>
          <version>4.5.6</version>
        </plugin>
        <plugin>
          <artifactId>maven-antrun-plugin</artifactId>
          <version>3.0.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-enforcer-plugin</artifactId>
          <version>3.0.0-M3</version>
          <executions>
            <execution>
              <id>enforce</id>
              <goals>
                <goal>enforce</goal>
              </goals>
              <configuration>
                <rules>
                  <requireMavenVersion>
                    <version>[3.5.4,)</version>
                  </requireMavenVersion>
                  <requireUpperBoundDeps />
                </rules>
              </configuration>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <artifactId>maven-assembly-plugin</artifactId>
          <version>3.3.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-jar-plugin</artifactId>
          <version>3.2.0</version>
          <configuration>
            <outputDirectory>${project.build.directory}/lib</outputDirectory>
          </configuration>
          <executions>
            <execution>
              <id>default-jar</id>
              <goals>
                <goal>jar</goal>
              </goals>
              <phase>prepare-package</phase>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <artifactId>maven-dependency-plugin</artifactId>
          <version>3.1.2</version>
          <configuration>
            <outputDirectory>${project.build.directory}/lib</outputDirectory>
            <useBaseVersion>false</useBaseVersion>
            <overWriteReleases>false</overWriteReleases>
            <overWriteSnapshots>true</overWriteSnapshots>
            <includeScope>runtime</includeScope>
          </configuration>
          <executions>
            <execution>
              <id>copy-dependencies</id>
              <goals>
                <goal>copy-dependencies</goal>
              </goals>
              <phase>package</phase>
            </execution>
          </executions>
        </plugin>
      </plugins>
    </pluginManagement>
    <plugins>
      <plugin>
        <groupId>com.diffplug.spotless</groupId>
        <artifactId>spotless-maven-plugin</artifactId>
      </plugin>
      <plugin>
        <groupId>com.github.spotbugs</groupId>
        <artifactId>spotbugs-maven-plugin</artifactId>
      </plugin>
      <plugin>
        <groupId>org.apache.rat</groupId>
        <artifactId>apache-rat-plugin</artifactId>
      </plugin>
      <plugin>
        <artifactId>maven-checkstyle-plugin</artifactId>
      </plugin>
      <plugin>
        <artifactId>maven-enforcer-plugin</artifactId>
      </plugin>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
      </plugin>
      <plugin>
        <artifactId>maven-surefire-plugin</artifactId>
      </plugin>
      <plugin>
        <artifactId>maven-javadoc-plugin</artifactId>
      </plugin>
      <plugin>
        <artifactId>maven-source-plugin</artifactId>
      </plugin>
      <plugin>
        <artifactId>maven-release-plugin</artifactId>
        <version>3.0.0-M4</version>
        <configuration>
          <preparationGoals>clean spotless:apply</preparationGoals>
          <autoVersionSubmodules>true</autoVersionSubmodules>
          <allowTimestampedSnapshots>false</allowTimestampedSnapshots>
          <tagNameFormat>@{project.version}</tagNameFormat>
        </configuration>
      </plugin>
    </plugins>
  </build>

  <profiles>
    <profile>
      <id>release</id>
      <!-- Based on: https://central.sonatype.org/pages/apache-maven.html-->
      <build>
        <plugins>
          <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-gpg-plugin</artifactId>
            <version>3.0.1</version>
            <executions>
              <execution>
                <id>sign-artifacts</id>
                <goals>
                  <goal>sign</goal>
                </goals>
                <phase>verify</phase>
                <configuration>
                  <gpgArguments>
                    <arg>--batch</arg>
                    <arg>--pinentry-mode</arg>
                    <arg>loopback</arg>
                  </gpgArguments>
                </configuration>
              </execution>
            </executions>
          </plugin>
          <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-source-plugin</artifactId>
            <version>3.2.1</version>
            <executions>
              <execution>
                <id>attach-sources</id>
                <goals>
                  <goal>jar-no-fork</goal>
                </goals>
              </execution>
            </executions>
          </plugin>
          <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-javadoc-plugin</artifactId>
            <version>3.3.1</version>
            <configuration>
              <source>8</source>
              <doclint>all,-missing</doclint>
            </configuration>
            <executions>
              <execution>
                <id>attach-javadocs</id>
                <goals>
                  <goal>jar</goal>
                </goals>
              </execution>
            </executions>
          </plugin>
          <plugin>
            <groupId>org.sonatype.plugins</groupId>
            <artifactId>nexus-staging-maven-plugin</artifactId>
            <version>1.6.8</version>
            <extensions>true</extensions>
            <configuration>
              <serverId>ossrh</serverId>
              <nexusUrl>https://s01.oss.sonatype.org/</nexusUrl>
              <autoReleaseAfterClose>true</autoReleaseAfterClose>
            </configuration>
          </plugin>
        </plugins>
      </build>
    </profile>

    <profile>
      <id>errorprone</id>
      <activation>
        <property>
          <name>!errorprone.skip</name>
        </property>
      </activation>
      <build>
        <pluginManagement>
          <plugins>
            <plugin>
              <groupId>org.apache.maven.plugins</groupId>
              <artifactId>maven-compiler-plugin</artifactId>
              <configuration>
                <compilerArgs combine.children="append">
                  <arg>-XDcompilePolicy=simple</arg>
                  <arg>${error-prone-base-config} ${error-prone-additional-args}</arg>
                </compilerArgs>
              </configuration>
            </plugin>
          </plugins>
        </pluginManagement>
      </build>
    </profile>

    <!-- using github.com/google/error-prone-javac is required when running on JDK 8 -->
    <profile>
      <id>jdk8</id>
      <activation>
        <jdk>1.8</jdk>
      </activation>
      <build>
        <pluginManagement>
          <plugins>
            <plugin>
              <groupId>org.apache.maven.plugins</groupId>
              <artifactId>maven-compiler-plugin</artifactId>
              <configuration>
                <fork>true</fork>
                <compilerArgs combine.children="append">
                  <arg>-J-Xbootclasspath/p:${settings.localRepository}/com/google/errorprone/javac/${error_prone.javac.version}/javac-${error_prone.javac.version}.jar</arg>
                </compilerArgs>
              </configuration>
            </plugin>
          </plugins>
        </pluginManagement>
      </build>
    </profile>
    <profile>
      <id>jdk9+</id>
      <activation>
        <jdk>[9,)</jdk>
      </activation>
      <properties>
        <!-- Javac introduced the "release" option only in Java 9+.  It
          properly sets up source, target and boot classpath for the best
          compatibility with different versions of Java. -->
        <maven.compiler.release>8</maven.compiler.release>
      </properties>
    </profile>
  </profiles>

</project>