/*

  * This file is part of dependency-check-core.

  *

  * 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.

  *

  * Copyright (c) 2012 Jeremy Long. All Rights Reserved.

  */

 package org.owasp.dependencycheck.analyzer;

 import java.util.ArrayList;

 import java.util.Iterator;

 import java.util.List;

 import java.util.ServiceLoader;

 import org.owasp.dependencycheck.utils.InvalidSettingException;

 import org.owasp.dependencycheck.utils.Settings;

 import org.slf4j.LoggerFactory;

 /**

  * The Analyzer Service Loader. This class loads all services that implement

  * org.owasp.dependencycheck.analyzer.Analyzer.

  *

  * @author Jeremy Long

  */

 public class AnalyzerService {

     /**

      * The Logger for use throughout the class.

      */

     private static final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(AnalyzerService.class);

     /**

      * The service loader for analyzers.

      */

     private final ServiceLoader<Analyzer> service;

     /**

      * Creates a new instance of AnalyzerService.

      *

      * @param classLoader the ClassLoader to use when dynamically loading Analyzer and Update services

      */

     public AnalyzerService(ClassLoader classLoader) {

         service = ServiceLoader.load(Analyzer.class, classLoader);

     }

     /**

      * Returns a list of all instances of the Analyzer interface.

      *

      * @return a list of Analyzers.

      */

     public List<Analyzer> getAnalyzers() {

         final List<Analyzer> analyzers = new ArrayList<Analyzer>();

         final Iterator<Analyzer> iterator = service.iterator();

         boolean experimentalEnabled = false;

         try {

             experimentalEnabled = Settings.getBoolean(Settings.KEYS.ANALYZER_EXPERIMENTAL_ENABLED, false);

         } catch (InvalidSettingException ex) {

             LOGGER.error("invalide experimental setting", ex);

         }

         while (iterator.hasNext()) {

             final Analyzer a = iterator.next();

             if (!experimentalEnabled && a.getClass().isAnnotationPresent(Experimental.class)) {

                 continue;

             }

             LOGGER.debug("Loaded Analyzer {}", a.getName());

             analyzers.add(a);

         }

         return analyzers;

     }

 }