pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--

    Copyright 2015-2019 The OpenZipkin 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>io.zipkin</groupId>
  <artifactId>zipkin-parent</artifactId>
  <version>2.15.1-SNAPSHOT</version>
  <packaging>pom</packaging>

  <modules>
    <module>zipkin</module>
    <module>zipkin-tests</module>
    <module>zipkin-lens</module>
    <module>zipkin-junit</module>
    <module>benchmarks</module>
    <module>zipkin-storage</module>
    <module>zipkin-collector</module>
    <module>zipkin-server</module>
  </modules>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.build.resourceEncoding>UTF-8</project.build.resourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

    <!-- default bytecode version for src/main -->
    <main.java.version>1.7</main.java.version>
    <main.signature.artifact>java17</main.signature.artifact>

    <!-- override to set exclusions per-project -->
    <errorprone.args />
    <errorprone.version>2.3.3</errorprone.version>

    <main.basedir>${project.basedir}</main.basedir>

    <armeria.version>0.89.0</armeria.version>
    <!-- This should only be used in tests, and be careful to avoid >= v20 apis -->
    <guava.version>28.0-jre</guava.version>

    <!-- only used for proto interop testing -->
    <wire.version>3.0.0-alpha01</wire.version>
    <unpack-proto.directory>${project.build.directory}/test/proto</unpack-proto.directory>

    <brave.version>5.6.9</brave.version>
    <cassandra-driver-core.version>3.7.2</cassandra-driver-core.version>
    <okhttp.version>3.14.2</okhttp.version>
    <jooq.version>3.11.11</jooq.version>
    <micrometer.version>1.2.0</micrometer.version>
    <spring-boot.version>2.1.6.RELEASE</spring-boot.version>
    <!-- MySQL connector is GPL, even if it has an OSS exception.
         https://www.mysql.com/about/legal/licensing/foss-exception/

         MariaDB has a friendlier license, LGPL, which is less scary in audits.
    -->
    <mariadb-java-client.version>2.4.2</mariadb-java-client.version>
    <!-- Java 8 dep, which is ok as zipkin-mysql is Java 8 anyway -->
    <HikariCP.version>3.3.1</HikariCP.version>
    <log4j.version>2.12.0</log4j.version>

    <junit.version>4.12</junit.version>
    <junit.jupiter.version>5.5.1</junit.jupiter.version>
    <powermock.version>2.0.2</powermock.version>
    <!-- Up to v2.27.0 of mockito has a conflict https://github.com/mockito/mockito/issues/1606
    java.lang.NoSuchMethodError: net.bytebuddy.dynamic.loading.MultipleParentClassLoader$Builder.appendMostSpecific(Ljava/util/Collection;)Lnet/bytebuddy/dynamic/loading/MultipleParentClassLoader$Builder
    -->
    <mockito.version>2.23.4</mockito.version>
    <assertj.version>3.13.1</assertj.version>
    <awaitility.version>3.1.6</awaitility.version>
    <hamcrest.version>1.3</hamcrest.version>
    <testcontainers.version>1.12.0</testcontainers.version>

    <auto-value.version>1.6.5</auto-value.version>
    <animal-sniffer-maven-plugin.version>1.18</animal-sniffer-maven-plugin.version>
    <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>
    <maven-deploy-plugin.version>3.0.0-M1</maven-deploy-plugin.version>
    <maven-install-plugin.version>3.0.0-M1</maven-install-plugin.version>
    <maven-release-plugin.version>2.5.3</maven-release-plugin.version>
    <maven-source-plugin.version>3.1.0</maven-source-plugin.version>
    <maven-javadoc-plugin.version>3.1.1</maven-javadoc-plugin.version>
    <license-maven-plugin.version>3.0</license-maven-plugin.version>
    <maven-jar-plugin.version>3.1.2</maven-jar-plugin.version>
    <maven-shade-plugin.version>3.2.1</maven-shade-plugin.version>
    <maven-failsafe-plugin.version>3.0.0-M3</maven-failsafe-plugin.version>
    <maven-enforcer-plugin.version>3.0.0-M2</maven-enforcer-plugin.version>
    <git-commit-id.version>3.0.0</git-commit-id.version>
  </properties>

  <name>Zipkin (Parent)</name>
  <description>Zipkin (Parent)</description>
  <url>https://github.com/openzipkin/zipkin</url>
  <inceptionYear>2015</inceptionYear>

  <organization>
    <name>OpenZipkin</name>
    <url>http://zipkin.io/</url>
  </organization>

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

  <scm>
    <url>https://github.com/openzipkin/zipkin</url>
    <connection>scm:git:https://github.com/openzipkin/zipkin.git</connection>
    <developerConnection>scm:git:https://github.com/openzipkin/zipkin.git</developerConnection>
    <tag>HEAD</tag>
  </scm>

  <!-- Developer section is needed for Maven Central, but doesn't need to include each person -->
  <developers>
    <developer>
      <id>openzipkin</id>
      <name>OpenZipkin Gitter</name>
      <url>https://gitter.im/openzipkin/zipkin</url>
    </developer>
  </developers>

  <distributionManagement>
    <repository>
      <id>bintray</id>
      <url>https://api.bintray.com/maven/openzipkin/maven/zipkin/;publish=1</url>
    </repository>
    <snapshotRepository>
      <id>jfrog-snapshots</id>
      <url>https://oss.jfrog.org/artifactory/oss-snapshot-local</url>
    </snapshotRepository>
  </distributionManagement>

  <issueManagement>
    <system>Github</system>
    <url>https://github.com/openzipkin/zipkin/issues</url>
  </issueManagement>

  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>javax.annotation</groupId>
        <artifactId>javax.annotation-api</artifactId>
        <version>1.3.1</version>
      </dependency>

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

      <dependency>
        <groupId>com.linecorp.armeria</groupId>
        <artifactId>armeria-spring-boot-autoconfigure</artifactId>
        <version>${armeria.version}</version>
        <exclusions>
          <exclusion>
            <groupId>com.linecorp.armeria</groupId>
            <artifactId>armeria-logback</artifactId>
          </exclusion>
          <exclusion>
            <groupId>javax.validation</groupId>
            <artifactId>validation-api</artifactId>
          </exclusion>
        </exclusions>
      </dependency>

      <dependency>
        <groupId>com.linecorp.armeria</groupId>
        <artifactId>armeria-tomcat</artifactId>
        <version>${armeria.version}</version>
      </dependency>

      <!-- Makes sure spring doesn't eagerly bind tomcat or slf4j -->
      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <version>${spring-boot.version}</version>
        <exclusions>
          <exclusion>
            <groupId>org.hibernate.validator</groupId>
            <artifactId>*</artifactId>
          </exclusion>
          <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
          </exclusion>
          <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-logging</artifactId>
          </exclusion>
        </exclusions>
      </dependency>
      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
        <version>${spring-boot.version}</version>
        <exclusions>
          <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-logging</artifactId>
          </exclusion>
        </exclusions>
      </dependency>
      <!-- End spring-boot-dependencies overrides -->

      <dependency>
        <groupId>com.squareup.okhttp3</groupId>
        <artifactId>okhttp</artifactId>
        <version>${okhttp.version}</version>
      </dependency>

      <dependency>
        <groupId>com.squareup.okhttp3</groupId>
        <artifactId>mockwebserver</artifactId>
        <version>${okhttp.version}</version>
      </dependency>

      <dependency>
        <groupId>com.google.auto.value</groupId>
        <artifactId>auto-value-annotations</artifactId>
        <version>${auto-value.version}</version>
      </dependency>
      <dependency>
        <groupId>com.google.auto.value</groupId>
        <artifactId>auto-value</artifactId>
        <version>${auto-value.version}</version>
      </dependency>

      <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-api</artifactId>
        <version>${log4j.version}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core</artifactId>
        <version>${log4j.version}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-jul</artifactId>
        <version>${log4j.version}</version>
      </dependency>
      <!-- used by our non-spring boot tests who have a slf4j dependency -->
      <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-slf4j-impl</artifactId>
        <version>${log4j.version}</version>
      </dependency>
      <!-- used by zipkin-server and zipkin-autoconfigure due to Spring Boot using slf4j -->
      <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-to-slf4j</artifactId>
        <version>${log4j.version}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-1.2-api</artifactId>
        <version>${log4j.version}</version>
      </dependency>

      <!-- for testing flink -->
      <dependency>
        <groupId>com.esotericsoftware.kryo</groupId>
        <artifactId>kryo</artifactId>
        <version>2.24.0</version>
      </dependency>

      <!-- Internal classes used in SpanBytesDecoder.JSON_V[12] -->
      <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.8.5</version>
      </dependency>

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

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

      <!--
      Current versions of JUnit5 provide the above junit-jupiter artifact for convenience but we may
      still have transitive dependencies on these older artifacts and have to make sure they're all
      using the same version.
      -->
      <dependency>
        <groupId>org.junit.jupiter</groupId>
        <artifactId>junit-jupiter-api</artifactId>
        <version>${junit.jupiter.version}</version>
      </dependency>

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

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

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

      <dependency>
        <groupId>org.mariadb.jdbc</groupId>
        <artifactId>mariadb-java-client</artifactId>
        <version>${mariadb-java-client.version}</version>
      </dependency>

      <dependency>
        <groupId>com.zaxxer</groupId>
        <artifactId>HikariCP</artifactId>
        <version>${HikariCP.version}</version>
      </dependency>

      <!-- Don't bring in brave's transitive dep on zipkin -->
      <dependency>
        <groupId>io.zipkin.brave</groupId>
        <artifactId>brave</artifactId>
        <version>${brave.version}</version>
        <exclusions>
          <exclusion>
            <groupId>io.zipkin.zipkin2</groupId>
            <artifactId>zipkin</artifactId>
          </exclusion>
        </exclusions>
      </dependency>

      <dependency>
        <groupId>io.zipkin.proto3</groupId>
        <artifactId>zipkin-proto3</artifactId>
        <version>0.2.1</version>
      </dependency>
      <dependency>
        <groupId>com.squareup.wire</groupId>
        <artifactId>wire-runtime</artifactId>
        <version>${wire.version}</version>
      </dependency>
    </dependencies>
  </dependencyManagement>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter</artifactId>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.assertj</groupId>
      <artifactId>assertj-core</artifactId>
      <scope>test</scope>
    </dependency>
  </dependencies>

  <build>
    <pluginManagement>
      <plugins>
        <!-- mvn -N io.takari:maven:wrapper generates the ./mvnw script -->
        <plugin>
          <groupId>io.takari</groupId>
          <artifactId>maven</artifactId>
          <version>0.7.6</version>
          <configuration>
            <maven>3.6.1</maven>
          </configuration>
        </plugin>

        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>${maven-compiler-plugin.version}</version>
          <inherited>true</inherited>
          <configuration>
            <!-- Retrolambda will rewrite lambdas as Java 6 bytecode -->
            <source>1.8</source>
            <target>1.8</target>
            <!-- or die! com.sun.tools.javac.api.JavacTool -->
            <fork>true</fork>
            <showWarnings>true</showWarnings>
          </configuration>
        </plugin>

        <plugin>
          <artifactId>maven-javadoc-plugin</artifactId>
          <version>${maven-javadoc-plugin.version}</version>
          <configuration>
            <failOnError>false</failOnError>
            <excludePackageNames>zipkin2.internal,zipkin2.internal.*</excludePackageNames>
            <!-- hush pedantic warnings: we don't put param and return on everything! -->
            <doclint>none</doclint>
          </configuration>
        </plugin>

        <plugin>
          <artifactId>maven-jar-plugin</artifactId>
          <version>${maven-jar-plugin.version}</version>
          <configuration>
            <archive>
              <!-- prevents huge pom file from also being added to the jar under META-INF/maven -->
              <addMavenDescriptor>false</addMavenDescriptor>
            </archive>
          </configuration>
        </plugin>

        <plugin>
          <artifactId>maven-shade-plugin</artifactId>
          <version>${maven-shade-plugin.version}</version>
        </plugin>

        <!-- Need to block import of shaded packages in bnd.bnd as maven bundle plugin analyzes the unshaded jar -->
        <plugin>
          <groupId>org.apache.felix</groupId>
          <artifactId>maven-bundle-plugin</artifactId>
          <version>4.2.0</version>
          <configuration>
            <obrRepository>NONE</obrRepository>
            <instructions>
              <Bundle-SymbolicName>${project.groupId}.${project.artifactId}</Bundle-SymbolicName>
            </instructions>
          </configuration>
          <executions>
            <execution>
              <phase>process-classes</phase>
              <goals>
                <goal>manifest</goal>
              </goals>
            </execution>
          </executions>
        </plugin>

        <plugin>
          <groupId>org.eclipse.m2e</groupId>
          <artifactId>lifecycle-mapping</artifactId>
          <version>1.0.0</version>
          <configuration>
            <lifecycleMappingMetadata>
              <pluginExecutions>
                <pluginExecution>
                  <pluginExecutionFilter>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <versionRange>[3.7,)</versionRange>
                    <goals>
                      <goal>compile</goal>
                      <goal>testCompile</goal>
                    </goals>
                  </pluginExecutionFilter>
                  <action>
                    <configurator>
                      <id>org.eclipse.m2e.jdt.javaConfigurator</id>
                    </configurator>
                  </action>
                </pluginExecution>
              </pluginExecutions>
            </lifecycleMappingMetadata>
          </configuration>
        </plugin>

        <!-- The below plugins compile protobuf stubs in the indicated source tree -->
        <plugin>
          <artifactId>maven-dependency-plugin</artifactId>
          <executions>
            <!-- wire-maven-plugin cannot get proto definitions from dependencies: this will -->
            <execution>
              <id>unpack-proto</id>
              <phase>generate-sources</phase>
              <goals>
                <goal>unpack-dependencies</goal>
              </goals>
              <configuration>
                <includeArtifactIds>zipkin-proto3</includeArtifactIds>
                <includes>**/*.proto</includes>
                <outputDirectory>${unpack-proto.directory}</outputDirectory>
              </configuration>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <groupId>com.squareup.wire</groupId>
          <artifactId>wire-maven-plugin</artifactId>
          <version>${wire.version}</version>
          <executions>
            <execution>
              <phase>generate-sources</phase>
              <goals>
                <goal>generate-sources</goal>
              </goals>
              <configuration>
                <protoSourceDirectory>${unpack-proto.directory}</protoSourceDirectory>
                <includes>
                  <include>zipkin.proto3.*</include>
                </includes>
              </configuration>
            </execution>
          </executions>
        </plugin>
      </plugins>
    </pluginManagement>

    <plugins>
      <!-- Top-level to ensure our server can use JDK 1.8
             (by checking we don't accidentally use later apis) -->
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>animal-sniffer-maven-plugin</artifactId>
        <version>${animal-sniffer-maven-plugin.version}</version>
        <configuration>
          <signature>
            <groupId>org.codehaus.mojo.signature</groupId>
            <artifactId>${main.signature.artifact}</artifactId>
            <version>1.0</version>
          </signature>
        </configuration>
        <executions>
          <execution>
            <goals>
              <goal>check</goal>
            </goals>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <artifactId>maven-surefire-plugin</artifactId>
        <version>${maven-failsafe-plugin.version}</version>
      </plugin>

      <plugin>
        <artifactId>maven-failsafe-plugin</artifactId>
        <version>${maven-failsafe-plugin.version}</version>
        <executions>
          <execution>
            <id>integration-test</id>
            <goals>
              <goal>integration-test</goal>
            </goals>
          </execution>
          <execution>
            <id>verify</id>
            <goals>
              <goal>verify</goal>
            </goals>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <artifactId>maven-install-plugin</artifactId>
        <version>${maven-install-plugin.version}</version>
      </plugin>

      <!-- Uploads occur as a last step (which also adds checksums) -->
      <plugin>
        <artifactId>maven-deploy-plugin</artifactId>
        <version>${maven-deploy-plugin.version}</version>
      </plugin>

      <plugin>
        <groupId>com.mycila</groupId>
        <artifactId>license-maven-plugin</artifactId>
        <version>${license-maven-plugin.version}</version>
        <configuration>
          <!-- session.executionRootDirectory resolves properly even with nested modules -->
          <header>${main.basedir}/src/etc/header.txt</header>
          <mapping>
            <!-- Don't use javadoc style as this makes code formatters break it by adding tags! -->
            <java>SLASHSTAR_STYLE</java>
            <kt>SLASHSTAR_STYLE</kt>
            <jsx>SLASHSTAR_STYLE</jsx>
            <bnd>SCRIPT_STYLE</bnd>
            <ejs>XML_STYLE</ejs>
            <scss>DOUBLESLASH_STYLE</scss>
          </mapping>
          <excludes>
            <exclude>.travis.yml</exclude>
            <exclude>.editorconfig</exclude>
            <exclude>.gitattributes</exclude>
            <exclude>.gitignore</exclude>
            <exclude>.mvn/**</exclude>
            <exclude>mvnw*</exclude>
            <exclude>etc/header.txt</exclude>
            <exclude>**/.idea/**</exclude>
            <exclude>**/node_modules/**</exclude>
            <exclude>**/.babelrc</exclude>
            <exclude>**/.bowerrc</exclude>
            <exclude>**/.editorconfig</exclude>
            <exclude>**/.eslintrc</exclude>
            <exclude>**/.eslintrc</exclude>
            <exclude>**/.eslintrc.js</exclude>
            <exclude>**/testdata/**/*.json</exclude>
            <exclude>**/test/data/**/*.json</exclude>
            <exclude>LICENSE</exclude>&gt;
            <exclude>**/*.md</exclude>
            <exclude>**/src/main/resources/banner.txt</exclude>
            <exclude>**/src/main/resources/*.yml</exclude>
            <exclude>**/spring.factories</exclude>
            <!-- Cassandra integration tests break when license headers are present -->
            <exclude>**/src/main/resources/*.cql</exclude>
            <exclude>kafka_*/**</exclude>
            <exclude>**/nohup.out</exclude>
            <exclude>src/test/resources/**</exclude>
            <exclude>**/generated/**</exclude>
          </excludes>
          <strictCheck>true</strictCheck>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>com.mycila</groupId>
            <artifactId>license-maven-plugin-git</artifactId>
            <version>${license-maven-plugin.version}</version>
          </dependency>
        </dependencies>
        <executions>
          <execution>
            <goals>
              <goal>check</goal>
            </goals>
            <phase>compile</phase>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <artifactId>maven-release-plugin</artifactId>
        <version>${maven-release-plugin.version}</version>
        <configuration>
          <useReleaseProfile>false</useReleaseProfile>
          <releaseProfiles>release</releaseProfiles>
          <autoVersionSubmodules>true</autoVersionSubmodules>
          <!-- to match zipkin-scala (openzipkin/zipkin) -->
          <tagNameFormat>@{project.version}</tagNameFormat>
        </configuration>
      </plugin>

      <plugin>
        <groupId>io.zipkin.centralsync-maven-plugin</groupId>
        <artifactId>centralsync-maven-plugin</artifactId>
        <version>0.1.1</version>
        <configuration>
          <packageName>zipkin</packageName>
        </configuration>
      </plugin>

      <plugin>
        <artifactId>maven-enforcer-plugin</artifactId>
        <version>${maven-enforcer-plugin.version}</version>
        <executions>
          <execution>
            <id>enforce-java</id>
            <goals>
              <goal>enforce</goal>
            </goals>
            <configuration>
              <rules>
                <requireJavaVersion>
                  <!-- don't JDK 12 until https://github.com/google/error-prone/issues/1106 -->
                  <version>[1.8,12)</version>
                </requireJavaVersion>
              </rules>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>

  <profiles>
    <profile>
      <id>error-prone-1.8</id>
      <activation>
        <jdk>1.8</jdk>
        <activeByDefault>false</activeByDefault>
      </activation>
      <build>
        <plugins>
          <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <executions>
              <execution>
                <!-- only use errorprone on main source tree -->
                <id>default-compile</id>
                <phase>compile</phase>
                <goals>
                  <goal>compile</goal>
                </goals>
                <configuration>
                  <compilerId>javac-with-errorprone</compilerId>
                  <forceJavacCompilerUse>true</forceJavacCompilerUse>
                  <compilerArgs>
                    <arg>${errorprone.args}</arg>
                  </compilerArgs>
                </configuration>
              </execution>
            </executions>
            <dependencies>
              <dependency>
                <groupId>org.codehaus.plexus</groupId>
                <artifactId>plexus-compiler-javac-errorprone</artifactId>
                <version>2.8.5</version>
              </dependency>
              <dependency>
                <groupId>com.google.errorprone</groupId>
                <artifactId>error_prone_core</artifactId>
                <version>${errorprone.version}</version>
              </dependency>
            </dependencies>
          </plugin>
        </plugins>
      </build>
    </profile>
    <profile>
      <id>error-prone-9+</id>
      <activation>
        <jdk>[9,)</jdk>
        <activeByDefault>false</activeByDefault>
      </activation>
      <build>
        <plugins>
          <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <executions>
              <execution>
                <!-- only use errorprone on main source tree -->
                <id>default-compile</id>
                <phase>compile</phase>
                <goals>
                  <goal>compile</goal>
                </goals>
                <configuration>
                  <forceJavacCompilerUse>true</forceJavacCompilerUse>
                  <compilerArgs>
                    <arg>-XDcompilePolicy=simple</arg>
                    <arg>-Xplugin:ErrorProne ${errorprone.args}</arg>
                  </compilerArgs>
                  <annotationProcessorPaths>
                    <processorPath>
                      <groupId>com.google.errorprone</groupId>
                      <artifactId>error_prone_core</artifactId>
                      <version>${errorprone.version}</version>
                    </processorPath>
                    <!-- auto-value is placed here eventhough not needed for all projects as
                         configuring along with errorprone is tricky in subprojects -->
                    <processorPath>
                      <groupId>com.google.auto.value</groupId>
                      <artifactId>auto-value</artifactId>
                      <version>${auto-value.version}</version>
                    </processorPath>
                  </annotationProcessorPaths>
                </configuration>
              </execution>
            </executions>
          </plugin>
        </plugins>
      </build>
    </profile>
    <profile>
      <id>release</id>
      <build>
        <plugins>
          <!-- disable license plugin since it should have already checked things and #1512 -->
          <plugin>
            <groupId>com.mycila</groupId>
            <artifactId>license-maven-plugin</artifactId>
            <executions>
              <execution>
                <phase>none</phase>
              </execution>
            </executions>
          </plugin>

          <!-- Creates source jar -->
          <plugin>
            <artifactId>maven-source-plugin</artifactId>
            <version>${maven-source-plugin.version}</version>
            <executions>
              <execution>
                <id>attach-sources</id>
                <goals>
                  <goal>jar</goal>
                </goals>
              </execution>
            </executions>
          </plugin>

          <!-- Creates javadoc jar, skipping internal classes -->
          <plugin>
            <artifactId>maven-javadoc-plugin</artifactId>
            <version>${maven-javadoc-plugin.version}</version>
            <configuration>
              <failOnError>false</failOnError>
              <excludePackageNames>zipkin2.internal,zipkin2.internal.*</excludePackageNames>
              <!-- hush pedantic warnings: we don't put param and return on everything! -->
              <doclint>none</doclint>
            </configuration>
            <executions>
              <execution>
                <id>attach-javadocs</id>
                <goals>
                  <goal>jar</goal>
                </goals>
                <phase>package</phase>
              </execution>
            </executions>
          </plugin>
        </plugins>
      </build>
    </profile>
    <profile>
      <id>netbeans</id>
      <activation>
          <activeByDefault>true</activeByDefault>
      </activation>
      <properties>
        <!-- NetBeans -->
        <org-netbeans-modules-editor-indent.CodeStyle.usedProfile>project</org-netbeans-modules-editor-indent.CodeStyle.usedProfile>
        <org-netbeans-modules-editor-indent.CodeStyle.project.indent-shift-width>2</org-netbeans-modules-editor-indent.CodeStyle.project.indent-shift-width>
        <org-netbeans-modules-editor-indent.CodeStyle.project.spaces-per-tab>2</org-netbeans-modules-editor-indent.CodeStyle.project.spaces-per-tab>
        <org-netbeans-modules-editor-indent.CodeStyle.project.tab-size>2</org-netbeans-modules-editor-indent.CodeStyle.project.tab-size>
        <org-netbeans-modules-editor-indent.CodeStyle.project.text-limit-width>110</org-netbeans-modules-editor-indent.CodeStyle.project.text-limit-width>
        <org-netbeans-modules-editor-indent.CodeStyle.project.expand-tabs>true</org-netbeans-modules-editor-indent.CodeStyle.project.expand-tabs>
      </properties>
    </profile>
  </profiles>
</project>