com.outbrain.ci.friendly.maven.plugin.VersionMojo Maven / Gradle / Ivy

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Plugin helps to use CI friendly versions in maven projects https://maven.apache.org/maven-ci-friendly.html replacing the flatten-maven-plugin
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package com.outbrain.ci.friendly.maven.plugin;

/*
 * 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.
 */

import org.apache.maven.execution.MavenSession;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugins.annotations.LifecyclePhase;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
import org.apache.maven.project.MavenProject;
import org.apache.maven.scm.plugin.AbstractScmMojo;

import javax.inject.Inject;


@Mojo(name = "version", aggregator = true, requiresProject = true, requiresDirectInvocation = true,
    executionStrategy = "once-per-session", threadSafe = true, defaultPhase = LifecyclePhase.INITIALIZE)
public class VersionMojo extends AbstractScmMojo {
  /**
   * The Maven Project.
   */
  @Parameter(defaultValue = "${project}", readonly = true, required = true)
  private MavenProject project;

  /**
   * The {@link MavenSession} used to get user properties.
   */
  @Parameter(defaultValue = "${session}", readonly = true, required = true)
  private MavenSession session;

  @Parameter(property = "tag.fetch", defaultValue = "false")
  private Boolean tagFetch;

  @Parameter(property = "git.command", defaultValue = "git describe --abbrev=0 --tags")
  private String command;

  @Inject
  private VersionProvider versionProvider;

  /**
   * {@inheritDoc}
   */
  public void execute()
      throws MojoExecutionException {
    super.execute();
    if (tagFetch) {
      final String version = versionProvider.getVersion(command);

      getLog().info("version:"+version);
      // define a new property in the Maven Project
      String revision = removePrefix(version);
      getLog().info("revision without prefix:"+revision);

      String nextRevision = incrementRevision(revision);

      project.getProperties().put("internal.revision", nextRevision);

      // Maven Plugins have built in logging too
      getLog().info("Next revision: " + nextRevision);

      System.setProperty("system.swinfra.version", nextRevision);

      //Team-City indication
      getLog().info("##teamcity [buildNumber "+nextRevision+"]");
    } else {
      getLog().info("Skip git tag fetch, using revision");
    }

  }

  private String incrementRevision(String revision) {
    String[] splitRevision = revision.split("\\.");

    Integer incremented = Integer.parseInt(splitRevision[splitRevision.length - 1]) + 1;

    final StringBuilder builder = new StringBuilder();
    for (int i = 0; i < splitRevision.length - 1; i++) {
      builder
          .append(splitRevision[i])
          .append(".");
    }
    builder.append(incremented);

    return builder.toString();
  }

  private String removePrefix(String version) {
    return version.substring(version.lastIndexOf("-") + 1);
  }

}