| /* |
| * 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. |
| */ |
| package org.apache.drill.fmpp.mojo; |
| |
| import static java.lang.String.format; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.commons.io.FileUtils; |
| import org.apache.drill.fmpp.mojo.MavenDataLoader.MavenData; |
| import org.apache.maven.plugin.AbstractMojo; |
| import org.apache.maven.plugin.MojoExecutionException; |
| import org.apache.maven.plugin.MojoFailureException; |
| import org.apache.maven.project.MavenProject; |
| |
| import com.google.common.base.Stopwatch; |
| |
| import fmpp.Engine; |
| import fmpp.ProgressListener; |
| import fmpp.progresslisteners.TerseConsoleProgressListener; |
| import fmpp.setting.Settings; |
| import fmpp.util.MiscUtil; |
| |
| /** |
| * a maven plugin to run the freemarker generation incrementally |
| * (if output has not changed, the files are not touched) |
| * @goal generate |
| * @phase generate-sources |
| */ |
| public class FMPPMojo extends AbstractMojo { |
| |
| /** |
| * Used to add new source directories to the build. |
| * @parameter default-value="${project}" |
| * @required |
| * @readonly |
| **/ |
| private MavenProject project; |
| |
| /** |
| * Where to find the FreeMarker template files. |
| * |
| * @parameter default-value="src/main/resources/fmpp/templates/" |
| * @required |
| */ |
| private File templates; |
| |
| /** |
| * Where to write the generated files of the output files. |
| * |
| * @parameter default-value="${project.build.directory}/generated-sources/fmpp/" |
| * @required |
| */ |
| private File output; |
| |
| /** |
| * Location of the FreeMarker config file. |
| * |
| * @parameter default-value="src/main/resources/fmpp/config.fmpp" |
| * @required |
| */ |
| private File config; |
| |
| /** |
| * compilation scope to be added to ("compile" or "test") |
| * |
| * @parameter default-value="compile" |
| * @required |
| */ |
| private String scope; |
| |
| /** |
| * if maven properties are added as data |
| * |
| * @parameter default-value="true" |
| * @required |
| */ |
| private boolean addMavenDataLoader; |
| |
| @Override |
| public void execute() throws MojoExecutionException, MojoFailureException { |
| if (project == null) { |
| throw new MojoExecutionException("This plugin can only be used inside a project."); |
| } |
| String outputPath = output.getAbsolutePath(); |
| if ((!output.exists() && !output.mkdirs()) || !output.isDirectory()) { |
| throw new MojoFailureException("can not write to output dir: " + outputPath); |
| } |
| String templatesPath = templates.getAbsolutePath(); |
| if (!templates.exists() || !templates.isDirectory()) { |
| throw new MojoFailureException("templates not found in dir: " + outputPath); |
| } |
| |
| // add the output directory path to the project source directories |
| switch (scope) { |
| case "compile": |
| project.addCompileSourceRoot(outputPath); |
| break; |
| case "test": |
| project.addTestCompileSourceRoot(outputPath); |
| break; |
| default: |
| throw new MojoFailureException("scope must be compile or test"); |
| } |
| |
| final Stopwatch sw = Stopwatch.createStarted(); |
| try { |
| getLog().info(format("Freemarker generation:\n scope: %s,\n config: %s,\n templates: %s", |
| scope, config.getAbsolutePath(), templatesPath)); |
| final File tmp = Files.createTempDirectory("freemarker-tmp").toFile(); |
| String tmpPath = tmp.getAbsolutePath(); |
| final String tmpPathNormalized = tmpPath.endsWith(File.separator) ? tmpPath : tmpPath + File.separator; |
| Settings settings = new Settings(new File(".")); |
| settings.set(Settings.NAME_SOURCE_ROOT, templatesPath); |
| settings.set(Settings.NAME_OUTPUT_ROOT, tmp.getAbsolutePath()); |
| settings.load(config); |
| settings.addProgressListener(new TerseConsoleProgressListener()); |
| settings.addProgressListener(new ProgressListener() { |
| @Override |
| public void notifyProgressEvent( |
| Engine engine, int event, |
| File src, int pMode, |
| Throwable error, Object param) |
| throws Exception { |
| if (event == EVENT_END_PROCESSING_SESSION) { |
| getLog().info(format("Freemarker generation took %dms", sw.elapsed(TimeUnit.MILLISECONDS))); |
| sw.reset(); |
| Report report = moveIfChanged(tmp, tmpPathNormalized); |
| if (!tmp.delete()) { |
| throw new MojoFailureException(format("can not delete %s", tmp)); |
| } |
| getLog().info(format("Incremental output update took %dms", sw.elapsed(TimeUnit.MILLISECONDS))); |
| getLog().info(format("new: %d", report.newFiles)); |
| getLog().info(format("changed: %d", report.changedFiles)); |
| getLog().info(format("unchanged: %d", report.unchangedFiles)); |
| } |
| } |
| } ); |
| if (addMavenDataLoader) { |
| getLog().info("Adding maven data loader"); |
| settings.setEngineAttribute(MavenDataLoader.MAVEN_DATA_ATTRIBUTE, new MavenData(project)); |
| settings.add(Settings.NAME_DATA, format("maven: %s()", MavenDataLoader.class.getName())); |
| } |
| settings.execute(); |
| } catch (Exception e) { |
| throw new MojoFailureException(MiscUtil.causeMessages(e), e); |
| } |
| } |
| |
| private static final class Report { |
| int changedFiles; |
| int unchangedFiles; |
| int newFiles; |
| Report(int changedFiles, int unchangedFiles, int newFiles) { |
| super(); |
| this.changedFiles = changedFiles; |
| this.unchangedFiles = unchangedFiles; |
| this.newFiles = newFiles; |
| } |
| public Report() { |
| this(0, 0, 0); |
| } |
| void add(Report other) { |
| changedFiles += other.changedFiles; |
| unchangedFiles += other.unchangedFiles; |
| newFiles += other.newFiles; |
| } |
| public void addChanged() { |
| ++ changedFiles; |
| } |
| public void addNew() { |
| ++ newFiles; |
| } |
| public void addUnchanged() { |
| ++ unchangedFiles; |
| } |
| } |
| |
| private Report moveIfChanged(File root, String tmpPath) throws MojoFailureException, IOException { |
| Report report = new Report(); |
| for (File file : root.listFiles()) { |
| if (file.isDirectory()) { |
| report.add(moveIfChanged(file, tmpPath)); |
| if (!file.delete()) { |
| throw new MojoFailureException(format("can not delete %s", file)); |
| } |
| } else { |
| String absPath = file.getAbsolutePath(); |
| if (!absPath.startsWith(tmpPath)) { |
| throw new MojoFailureException(format("%s should start with %s", absPath, tmpPath)); |
| } |
| String relPath = absPath.substring(tmpPath.length()); |
| File outputFile = new File(output, relPath); |
| if (!outputFile.exists()) { |
| report.addNew(); |
| } else if (!FileUtils.contentEquals(file, outputFile)) { |
| getLog().info(format("%s has changed", relPath)); |
| if (!outputFile.delete()) { |
| throw new MojoFailureException(format("can not delete %s", outputFile)); |
| } |
| report.addChanged(); |
| } else { |
| report.addUnchanged(); |
| } |
| if (!outputFile.exists()) { |
| File parentDir = outputFile.getParentFile(); |
| if (parentDir.exists() && !parentDir.isDirectory()) { |
| throw new MojoFailureException(format("can not move %s to %s as %s is not a dir", file, outputFile, parentDir)); |
| } |
| if (!parentDir.exists() && !parentDir.mkdirs()) { |
| throw new MojoFailureException(format("can not move %s to %s as dir %s can not be created", file, outputFile, parentDir)); |
| } |
| FileUtils.moveFile(file, outputFile); |
| } else { |
| if (!file.delete()) { |
| throw new MojoFailureException(format("can not delete %s", file)); |
| } |
| } |
| } |
| } |
| return report; |
| } |
| |
| } |