| /* |
| * 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 org.apache.hadoop.maven.plugin.resourcegz; |
| |
| import com.google.inject.internal.util.Lists; |
| import org.apache.commons.io.IOUtils; |
| import org.apache.maven.plugin.AbstractMojo; |
| import org.apache.maven.plugin.MojoExecutionException; |
| import org.apache.maven.plugin.MojoFailureException; |
| import org.apache.maven.plugins.annotations.Mojo; |
| import org.apache.maven.plugins.annotations.Parameter; |
| |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.List; |
| import java.util.function.Consumer; |
| import java.util.regex.Matcher; |
| import java.util.zip.GZIPOutputStream; |
| |
| /** |
| * ResourceGzMojo will gzip files. |
| * It is meant to be used for gzipping website resource files (e.g. .js, .css, |
| * etc). It takes an input directory, output directory, and extensions to |
| * process and will generate the .gz files. Any additional directory structure |
| * beyond the input directory is preserved in the output directory. |
| */ |
| @Mojo(name="resource-gz") |
| public class ResourceGzMojo extends AbstractMojo { |
| |
| /** |
| * The input directory. Will be searched recursively and its directory |
| * structure will be maintaned in the outputDirectory. |
| */ |
| @Parameter(property = "inputDirectory", required = true) |
| private String inputDirectory; |
| |
| /** |
| * The output directory. |
| */ |
| @Parameter(property = "outputDirectory", required = true) |
| private String outputDirectory; |
| |
| /** |
| * A comma separated list of extensions to include. |
| */ |
| @Parameter(property = "extensions", required = true) |
| private String extensions; |
| |
| public void execute() throws MojoExecutionException, MojoFailureException { |
| try { |
| Path inputDir = new File(inputDirectory).toPath(); |
| File outputDir = new File(outputDirectory); |
| List<String> exts = Lists.newArrayList(extensions.split(",")); |
| exts.replaceAll(String::trim); |
| GZConsumer cons = new GZConsumer(inputDir.toFile(), outputDir); |
| Files.walk(inputDir).filter(path -> { |
| for (String ext : exts) { |
| if (path.getFileName().toString().endsWith("." + ext)) { |
| return true; |
| } |
| } |
| return false; |
| }).forEach(cons); |
| if (cons.getThrowable() != null) { |
| throw new MojoExecutionException(cons.getThrowable().toString(), |
| cons.getThrowable()); |
| } |
| } catch (Throwable t) { |
| throw new MojoExecutionException(t.toString(), t); |
| } |
| } |
| |
| private class GZConsumer implements Consumer<Path> { |
| private final File inputDir; |
| private final File outputDir; |
| private Throwable throwable; |
| |
| public GZConsumer(File inputDir, File outputDir) { |
| this.inputDir = inputDir; |
| this.outputDir = outputDir; |
| this.throwable = null; |
| } |
| |
| @Override |
| public void accept(Path path) { |
| if (throwable != null) { |
| return; |
| } |
| try { |
| File outFile = new File(outputDir, path.toFile().getCanonicalPath() |
| .replaceFirst(Matcher.quoteReplacement( |
| inputDir.getCanonicalPath()), "") + ".gz"); |
| if (outFile.getParentFile().isDirectory() || |
| outFile.getParentFile().mkdirs()) { |
| try ( |
| GZIPOutputStream os = new GZIPOutputStream( |
| new FileOutputStream(outFile)); |
| BufferedReader is = Files.newBufferedReader(path) |
| ) { |
| getLog().info("Compressing " + path + " to " + outFile); |
| IOUtils.copy(is, os); |
| } |
| } else { |
| throw new IOException("Directory " + outFile.getParent() |
| + " does not exist or was unable to be created"); |
| } |
| } catch (Throwable t) { |
| this.throwable = t; |
| } |
| } |
| |
| public Throwable getThrowable() { |
| return throwable; |
| } |
| } |
| } |