content: /*
   * 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
   *
   *     https://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.avro.mojo;
  
  import org.apache.avro.Protocol;
  import org.apache.avro.compiler.specific.SpecificCompiler;
  import org.apache.avro.idl.IdlFile;
  import org.apache.avro.idl.IdlReader;
  import org.apache.maven.artifact.DependencyResolutionRequiredException;
  
  import java.io.File;
  import java.io.IOException;
  import java.net.URL;
  import java.net.URLClassLoader;
  import java.nio.file.Path;
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Generate Java classes and interfaces from AvroIDL files (.avdl)
   *
   * @goal idl
   * @requiresDependencyResolution runtime
   * @phase generate-sources
   * @threadSafe
   */
  public class IDLMojo extends AbstractAvroMojo {
    /**
     * A set of Ant-like inclusion patterns used to select files from the source
     * directory for processing. By default, the pattern <code>**&#47;*.avdl</code>
     * is used to select IDL files.
     *
     * @parameter
     */
    private String[] includes = new String[] { "**/*.avdl" };
  
    /**
     * A set of Ant-like inclusion patterns used to select files from the source
     * directory for processing. By default, the pattern <code>**&#47;*.avdl</code>
     * is used to select IDL files.
     *
     * @parameter
     */
    private String[] testIncludes = new String[] { "**/*.avdl" };
  
    @Override
    protected void doCompile(String filename, File sourceDirectory, File outputDirectory) throws IOException {
      try {
        @SuppressWarnings("rawtypes")
        List runtimeClasspathElements = project.getRuntimeClasspathElements();
  
        List<URL> runtimeUrls = new ArrayList<>();
  
        // Add the source directory of avro files to the classpath so that
        // imports can refer to other idl files as classpath resources
        runtimeUrls.add(sourceDirectory.toURI().toURL());
  
        // If runtimeClasspathElements is not empty values add its values to Idl path.
        if (runtimeClasspathElements != null && !runtimeClasspathElements.isEmpty()) {
          for (Object runtimeClasspathElement : runtimeClasspathElements) {
            String element = (String) runtimeClasspathElement;
            runtimeUrls.add(new File(element).toURI().toURL());
          }
        }
  
        final ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
        URLClassLoader projPathLoader = new URLClassLoader(runtimeUrls.toArray(new URL[0]), contextClassLoader);
        Thread.currentThread().setContextClassLoader(projPathLoader);
        try {
          IdlReader parser = new IdlReader();
          Path sourceFilePath = sourceDirectory.toPath().resolve(filename);
          IdlFile idlFile = parser.parse(sourceFilePath);
          for (String warning : idlFile.getWarnings()) {
            getLog().warn(warning);
          }
          final SpecificCompiler compiler;
          final Protocol protocol = idlFile.getProtocol();
          if (protocol != null) {
            compiler = new SpecificCompiler(protocol);
          } else {
            compiler = new SpecificCompiler(idlFile.getNamedSchemas().values());
          }
          setCompilerProperties(compiler);
          for (String customConversion : customConversions) {
            compiler.addCustomConversion(projPathLoader.loadClass(customConversion));
          }
          compiler.compileToDestination(sourceFilePath.toFile(), outputDirectory);
        } finally {
          Thread.currentThread().setContextClassLoader(contextClassLoader);
        }
      } catch (ClassNotFoundException | DependencyResolutionRequiredException e) {
        throw new IOException(e);
      }
    }
  
    @Override
    protected String[] getIncludes() {
      return includes;
    }
  
    @Override
    protected String[] getTestIncludes() {
      return testIncludes;
    }
  }
  