public ProtocolFactoryHbase(Configuration conf) {
   this.conf = conf;
   this.extensionPoint = PluginRepository.get(conf).getExtensionPoint(ProtocolHbase.X_POINT_ID);
   if (this.extensionPoint == null) {
     throw new RuntimeException("x-point " + ProtocolHbase.X_POINT_ID + " not found.");
   }
 }
Пример #2
0
 public NutchPublishers(Configuration conf) {
   this.conf = conf;
   this.publishers =
       (NutchPublisher[])
           PluginRepository.get(conf)
               .getOrderedPlugins(
                   NutchPublisher.class, NutchPublisher.X_POINT_ID, "publisher.order");
 }
Пример #3
0
  /**
   * Constructor that configures the cache of ResponseWriter objects.
   *
   * @param conf The Nutch configuration object.
   */
  public ResponseWriters(Configuration conf) {

    // get the cache and the cache key
    String cacheKey = ResponseWriter.class.getName();
    ObjectCache objectCache = ObjectCache.get(conf);
    this.responseWriters = (Map<String, ResponseWriter>) objectCache.getObject(cacheKey);

    // if already populated do nothing
    if (this.responseWriters == null) {

      try {

        // get the extension point and all ResponseWriter extensions
        ExtensionPoint point =
            PluginRepository.get(conf).getExtensionPoint(ResponseWriter.X_POINT_ID);
        if (point == null) {
          throw new RuntimeException(ResponseWriter.X_POINT_ID + " not found.");
        }

        // populate content type on the ResponseWriter classes, each response
        // writer can handle more than one response type
        Extension[] extensions = point.getExtensions();
        Map<String, ResponseWriter> writers = new HashMap<String, ResponseWriter>();
        for (int i = 0; i < extensions.length; i++) {
          Extension extension = extensions[i];
          ResponseWriter writer = (ResponseWriter) extension.getExtensionInstance();
          String[] responseTypes = extension.getAttribute("responseType").split(",");
          String contentType = extension.getAttribute("contentType");
          writer.setContentType(contentType);
          for (int k = 0; k < responseTypes.length; k++) {
            writers.put(responseTypes[k], writer);
          }
        }

        // set null object if no writers, otherwise set the writers
        if (writers == null) {
          objectCache.setObject(cacheKey, new HashMap<String, ResponseWriter>());
        } else {
          objectCache.setObject(cacheKey, writers);
        }
      } catch (PluginRuntimeException e) {
        throw new RuntimeException(e);
      }

      // set the response writers map
      this.responseWriters = (Map<String, ResponseWriter>) objectCache.getObject(cacheKey);
    }
  }