NonSnapshotCommitMojo.java

/*
 * Copyright 2012-2013 the original author or 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.
 */
package at.nonblocking.maven.nonsnapshot;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.maven.plugins.annotations.Mojo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import at.nonblocking.maven.nonsnapshot.exception.NonSnapshotPluginException;

/**
 * Goal to commit changed POM files if the updateVersions goal was called with deferPomCommit = true
 *
 * @author Juergen Kofler
 */
@Mojo(name = "commitVersions", aggregator = true)
public class NonSnapshotCommitMojo extends NonSnapshotBaseMojo {

  private static Logger LOG = LoggerFactory.getLogger(NonSnapshotCommitMojo.class);

  @Override
  protected void internalExecute() {
    File dirtyModulesRegistryFile = getDirtyModulesRegistryFile();
    LOG.debug("Reading POM files to commit from: {}", dirtyModulesRegistryFile.getAbsolutePath());

    if (!dirtyModulesRegistryFile.exists()) {
      LOG.info("File {} does not exist. Doing nothing.", dirtyModulesRegistryFile.getAbsolutePath());
      return;
    }

    List<File> pomsToCommit = readPomFileList(dirtyModulesRegistryFile);
    if (pomsToCommit.size() == 0) {
      return;
    }

    try {
      LOG.info("Committing {} POM files", pomsToCommit.size());
      getScmHandler().commitFiles(pomsToCommit, "Nonsnapshot Plugin: Version of " + pomsToCommit.size() + " modules updated");
    } catch (RuntimeException e) {
      if (isDontFailOnCommit()) {
        LOG.warn("Error occurred during commit, ignoring it since dontFailOnCommit=true.", e);
      } else {
        throw e;
      }
    }
  }

  private List<File> readPomFileList(File inputFile) {
    List<File> pomFileList = new ArrayList<>();
    File baseDir = getMavenProject().getBasedir();

    try {
      BufferedReader reader = new BufferedReader(new FileReader(inputFile));

      String line;
      while ((line = reader.readLine()) != null) {
        File pom = new File(baseDir, line + "/pom.xml").getCanonicalFile();
        if (!pomFileList.contains(pom)) {
          pomFileList.add(pom);
        }
      }

      reader.close();

      LOG.info("Deleting dirty modules registry file: {}", inputFile.getAbsolutePath());
      inputFile.delete();

      return pomFileList;

    } catch (IOException e) {
      throw new NonSnapshotPluginException("Failed to read dirty modules registry file!", e);
    }
  }
}