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.solr.handler.admin;
  
  import java.net.URL;
  import java.util.ArrayList;
  import java.util.Map;
  
  import org.apache.solr.common.params.SolrParams;
  import org.apache.solr.common.util.SimpleOrderedMap;
  import org.apache.solr.core.SolrCore;
  import org.apache.solr.core.SolrInfoMBean;
  import org.apache.solr.handler.RequestHandlerBase;
  import org.apache.solr.request.SolrQueryRequest;
  import org.apache.solr.response.SolrQueryResponse;
  
  /**
   * similar to "admin/registry.jsp" 
   * 
   * NOTE: the response format is still likely to change.  It should be designed so
   * that it works nicely with an XSLT transformation.  Until we have a nice
   * XSLT front end for /admin, the format is still open to change.
   * 
   * @version $Id: PluginInfoHandler.java 1052938 2010-12-26 20:21:48Z rmuir $
   * @since solr 1.2
   */
  public class PluginInfoHandler extends RequestHandlerBase
  {
    @Override
    public void handleRequestBody(SolrQueryRequest req, SolrQueryResponse rsp) throws Exception 
    {
      SolrParams params = req.getParams();
      
      boolean stats = params.getBool( "stats", false );
      rsp.add( "plugins", getSolrInfoBeans( req.getCore(), stats ) );
      rsp.setHttpCaching(false);
    }
    
    private static SimpleOrderedMap<Object> getSolrInfoBeans( SolrCore core, boolean stats )
    {
      SimpleOrderedMap<Object> list = new SimpleOrderedMap<Object>();
      for (SolrInfoMBean.Category cat : SolrInfoMBean.Category.values()) 
      {
        SimpleOrderedMap<Object> category = new SimpleOrderedMap<Object>();
        list.add( cat.name(), category );
        Map<String, SolrInfoMBean> reg = core.getInfoRegistry();
        for (Map.Entry<String,SolrInfoMBean> entry : reg.entrySet()) {
          SolrInfoMBean m = entry.getValue();
          if (m.getCategory() != cat) continue;
  
          String na = "Not Declared";
          SimpleOrderedMap<Object> info = new SimpleOrderedMap<Object>();
          category.add( entry.getKey(), info );
  
          info.add( "name",        (m.getName()       !=null ? m.getName()        : na) );
          info.add( "version",     (m.getVersion()    !=null ? m.getVersion()     : na) );
          info.add( "description", (m.getDescription()!=null ? m.getDescription() : na) );
  
          info.add( "sourceId",    (m.getSourceId()   !=null ? m.getSourceId()    : na) );
          info.add( "source",      (m.getSource()     !=null ? m.getSource()      : na) );
  
          URL[] urls = m.getDocs();
          if ((urls != null) && (urls.length > 0)) {
            ArrayList<String> docs = new ArrayList<String>(urls.length);
            for( URL u : urls ) {
              docs.add( u.toExternalForm() );
            }
            info.add( "docs", docs );
          }
  
          if( stats ) {
            info.add( "stats", m.getStatistics() );
          }
        }
      }
      return list;
    }
    
    
    //////////////////////// SolrInfoMBeans methods //////////////////////
  
    @Override
    public String getDescription() {
      return "Registry";
    }
  
    @Override
    public String getVersion() {
        return "$Revision: 1052938 $";
    }
  
    @Override
    public String getSourceId() {
      return "$Id: PluginInfoHandler.java 1052938 2010-12-26 20:21:48Z rmuir $";
    }
  
    @Override
    public String getSource() {
      return "$URL: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene_solr_3_5/solr/core/src/java/org/apache/solr/handler/admin/PluginInfoHandler.java $";
    }
  }
  