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.component.twitter.consumer;
  
  import java.util.List;
  
  import org.apache.camel.Exchange;
  import org.apache.camel.Processor;
  import org.apache.camel.component.twitter.AbstractTwitterEndpoint;
  import org.apache.camel.component.twitter.data.EndpointType;
  import org.apache.camel.support.ScheduledPollConsumer;
  
  /**
   * Provides a scheduled polling consumer.
   */
  public class DefaultTwitterConsumer extends ScheduledPollConsumer implements TwitterEventListener {
  
      public static final long DEFAULT_CONSUMER_DELAY = 30 * 1000L;
      private final AbstractTwitterEndpoint endpoint;
      private final AbstractTwitterConsumerHandler handler;
  
      public DefaultTwitterConsumer(AbstractTwitterEndpoint endpoint, Processor processor,
                                    AbstractTwitterConsumerHandler handler) {
          super(endpoint, processor);
          setDelay(DEFAULT_CONSUMER_DELAY);
          this.endpoint = endpoint;
          this.handler = handler;
      }
  
      @Override
      public AbstractTwitterEndpoint getEndpoint() {
          return (AbstractTwitterEndpoint) super.getEndpoint();
      }
  
      @Override
      protected void doStart() throws Exception {
          super.doStart();
          if (endpoint.getEndpointType().equals(EndpointType.DIRECT)) {
              List<Exchange> exchanges = handler.directConsume();
              for (Exchange exchange : exchanges) {
                  getProcessor().process(exchange);
              }
          }
      }
  
      @Override
      protected int poll() throws Exception {
          List<Exchange> exchanges = handler.pollConsume();
  
          int index = 0;
          for (; index < exchanges.size(); index++) {
              getProcessor().process(exchanges.get(index));
          }
  
          return index;
      }
  
      @Override
      public void onEvent(Exchange exchange) {
          if (!isRunAllowed()) {
              return;
          }
  
          try {
              getProcessor().process(exchange);
          } catch (Exception e) {
              exchange.setException(e);
          }
  
          if (exchange.getException() != null) {
              getExceptionHandler().handleException("Error processing exchange on status update", exchange,
                      exchange.getException());
          }
      }
  
  }
  