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
   *
   *      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.camel.kafkaconnector.maven;
  
  import java.io.File;
  import java.io.IOError;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.List;
  import java.util.Map;
  import java.util.function.Supplier;
  import java.util.jar.JarEntry;
  import java.util.jar.JarFile;
  import java.util.stream.Collectors;
  import java.util.zip.ZipEntry;
  
  import org.apache.camel.tooling.util.PackageHelper;
  import org.apache.maven.plugin.AbstractMojo;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.MojoFailureException;
  import org.apache.maven.plugins.annotations.Component;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.project.MavenProject;
  import org.codehaus.plexus.resource.ResourceManager;
  import org.codehaus.plexus.resource.loader.FileResourceCreationException;
  import org.codehaus.plexus.resource.loader.FileResourceLoader;
  import org.codehaus.plexus.resource.loader.ResourceNotFoundException;
  
  public abstract class AbstractCamelKafkaConnectorMojo extends AbstractMojo {
      public static final String KAFKA_CONNECTORS_SUFFIX = "-kafka-connector";
      private static final String MAIN_COMPONENT_GROUP_ID = "org.apache.camel";
  
      @Component
      protected ResourceManager rm;
  
      /**
       * The maven project.
       */
      @Parameter(property = "project", required = true, readonly = true)
      protected MavenProject project;
  
      /**
       * NOTICE file.
       */
      @Parameter(defaultValue = "camel-kafka-connector-NOTICE.txt")
      protected String noticeTemplate;
  
      /**
       * LICENSE file.
       */
      @Parameter(defaultValue = "camel-kafka-connector-LICENSE.txt")
      protected String licenseTemplate;
  
      /**
       * Package file template to be placed in src/main/assembly/package.xml.
       */
      @Parameter(defaultValue = "camel-kafka-connector-template-package.template")
      protected String packageFileTemplate;
  
      /**
       * Example Connector Source file template.
       */
      @Parameter(defaultValue = "camel-kafka-connector-template-example-source-properties.template")
      protected String exampleSourcePropertiesFileTemplate;
  
      /**
       * Example Connector Sink file template.
       */
      @Parameter(defaultValue = "camel-kafka-connector-template-example-sink-properties.template")
      protected String exampleSinkPropertiesFileTemplate;
  
      /**
       * Java file header to be placed at the start of every generated .java file.
       */
      @Parameter(defaultValue = "camel-kafka-connector-java-header.txt")
      protected String javaFilesHeader;
  
      /**
       * The project directory
       */
      @Parameter(defaultValue = "${basedir}")
      protected File projectDir;
      
      /**
       * The project directory
       */
      @Parameter(defaultValue = "${basedir}/../")
      protected File projectBaseDir;
  
      /**
       * The maven project.
       */
      @Parameter(property = "connectors-project-name", defaultValue = "connectors", readonly = true)
      protected String connectorsProjectName;
  
      /**
       *  If "true" and if there is a <camel-component>-kafka-connector submodule in connectors directory,
       *  and it is missing from the camel catalog or is in the excludedComponents list, then
       *  remove the directory and remove the module from connectors/pom.xml.
       */
      @Parameter(property = "remove-missing-components", defaultValue = "false")
      protected boolean removeMissingComponents;
  
      /**
       * Execute goal.
       *
       * @throws MojoExecutionException execution of the main class or one of the threads it generated failed.
       * @throws MojoFailureException   something bad happened...
       */
      @Override
      public void execute() throws MojoExecutionException, MojoFailureException {
          configureResourceManager();
          //execute only once for the connectors parent project which can be configured with <connectorsProjectName> option
          if (!project.getArtifactId().equals(connectorsProjectName)) {
              getLog().debug("Skipping project " + project.getArtifactId() + " since it is not " + connectorsProjectName + ", which can be configured with <connectorsProjectName> option.");
              return;
          }
          try {
              executeAll();
          } catch (IOException | ResourceNotFoundException | FileResourceCreationException e) {
              throw new MojoExecutionException("Error executing mojo", e);
          }
      }
  
      protected void configureResourceManager() {
          rm.setOutputDirectory(new File(project.getBuild().getDirectory()));
          File dir = project.getFile().getParentFile();
          rm.addSearchPath(FileResourceLoader.ID, dir.getAbsolutePath());
          rm.addSearchPath("url", "");
      }
  
      protected abstract String getMainDepArtifactId();
  
      protected String getMainDepGroupId() {
          return MAIN_COMPONENT_GROUP_ID;
      }
  
      protected String getMainDepVersion() {
          return project.getVersion();
      }
  
      protected abstract void executeAll() throws MojoExecutionException, MojoFailureException, IOException, ResourceNotFoundException, FileResourceCreationException;
  
      protected JarFile getJarFile() throws IOException {
          return getJarFile(getMainDepGroupId(), getMainDepArtifactId());
      }
  
      protected JarFile getJarFile(String groupId, String artifactId) throws IOException {
          return new JarFile(project.getArtifactMap().get(groupId + ":" + artifactId).getFile());
      }
  
      protected List<String> findComponentNames(JarFile componentJar) {
          return findNames(componentJar, "META-INF/services/org/apache/camel/component/");
      }
  
      protected List<String> findDataFormatNames(JarFile componentJar) {
          return findNames(componentJar, "META-INF/services/org/apache/camel/dataformat/");
      }
  
      protected List<String> findLanguageNames(JarFile componentJar) {
          return findNames(componentJar, "META-INF/services/org/apache/camel/language/");
      }
  
      protected List<String> findNames(JarFile componentJar, String dir) {
          return componentJar.stream()
                  .filter(je -> !je.isDirectory())
                  .map(ZipEntry::getName)
                  .filter(s -> s.startsWith(dir))
                  .map(s -> s.substring(dir.length()))
                  .filter(s -> !s.startsWith(".") && !s.contains("/"))
                  .collect(Collectors.toList());
      }
  
      protected static String loadJson(JarFile jar, JarEntry je) {
          try (InputStream is = jar.getInputStream(je)) {
              return PackageHelper.loadText(is);
          } catch (IOException e) {
              throw new IOError(e);
          }
      }
  
      protected static <T> Supplier<T> cache(Supplier<T> supplier) {
          return new Supplier<T>() {
              T value;
  
              @Override
              public T get() {
                  if (value == null) {
                      value = supplier.get();
                  }
                  return value;
              }
          };
      }
  
      protected String loadModelJson(Map<String, Supplier<String>> jsonFiles, String modelName) {
          return loadJsonOfType(jsonFiles, modelName + ".json", "model");
      }
  
      protected String loadComponentJson(Map<String, Supplier<String>> jsonFiles, String componentName) {
          return loadJsonOfType(jsonFiles, componentName + ".json", "component");
      }
  
      protected String loadDataFormatJson(Map<String, Supplier<String>> jsonFiles, String dataFormatName) {
          return loadJsonOfType(jsonFiles, dataFormatName + ".json", "dataformat");
      }
  
      protected String loadLanguageJson(Map<String, Supplier<String>> jsonFiles, String languageName) {
          return loadJsonOfType(jsonFiles, languageName + ".json", "language");
      }
  
      protected String loadOtherJson(Map<String, Supplier<String>> jsonFiles, String otherName) {
          return loadJsonOfType(jsonFiles, otherName + ".json", "other");
      }
  
      protected String loadJsonOfType(Map<String, Supplier<String>> jsonFiles, String modelName, String type) {
          for (Map.Entry<String, Supplier<String>> entry : jsonFiles.entrySet()) {
              if (entry.getKey().endsWith("/" + modelName)
                      || entry.getKey().endsWith("!" + modelName)) {
                  String json = entry.getValue().get();
                  if (json.contains("\"kind\": \"" + type + "\"")) {
                      return json;
                  }
              }
          }
          return null;
      }
  }
  