    1   /* CrawlStateUpdater
    2    *
    3    * Created on Jun 5, 2003
    4    *
    5    * Copyright (C) 2003 Internet Archive.
    6    *
    7    * This file is part of the Heritrix web crawler (crawler.archive.org).
    8    *
    9    * Heritrix is free software; you can redistribute it and/or modify
    10   * it under the terms of the GNU Lesser Public License as published by
    11   * the Free Software Foundation; either version 2.1 of the License, or
    12   * any later version.
    13   *
    14   * Heritrix is distributed in the hope that it will be useful,
    15   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    16   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    17   * GNU Lesser Public License for more details.
    18   *
    19   * You should have received a copy of the GNU Lesser Public License
    20   * along with Heritrix; if not, write to the Free Software
    21   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    22   */
    23  package org.archive.crawler.postprocessor;
    24
    25
    26  import java.util.logging.Logger;
    27
    28  import org.apache.commons.httpclient.URIException;
    29  import org.archive.crawler.datamodel.CoreAttributeConstants;
    30  import org.archive.crawler.datamodel.CrawlHost;
    31  import org.archive.crawler.datamodel.CrawlServer;
    32  import org.archive.crawler.datamodel.CrawlURI;
    33  import org.archive.crawler.datamodel.FetchStatusCodes;
    34  import org.archive.crawler.framework.Processor;
    35  import org.archive.crawler.framework.Frontier.FrontierGroup;
    36
    37
    38  /***
    39   * A step, late in the processing of a CrawlURI, for updating the per-host
    40   * information that may have been affected by the fetch. This will initially
    41   * be robots and ip address info; it could include other per-host stats that
    42   * would affect the crawl (like total pages visited at the site) as well.
    43   *
    44   * @author gojomo
    45   * @version $Date: 2007-08-28 05:15:25 +0000 (Tue, 28 Aug 2007) $, $Revision: 5439 $
    46   */
    47  public class CrawlStateUpdater extends Processor implements
    48          CoreAttributeConstants, FetchStatusCodes {
    49
    50      private static final long serialVersionUID = -1072728147960180091L;
    51
    52      private static final Logger logger =
    53          Logger.getLogger(CrawlStateUpdater.class.getName());
    54
    55      public CrawlStateUpdater(String name) {
    56          super(name, "Crawl state updater");
    57      }
    58
    59      protected void innerProcess(CrawlURI curi) {
    60          CrawlServer server =
    61              getController().getServerCache().getServerFor(curi);
    62
    63          String scheme = curi.getUURI().getScheme().toLowerCase();
    64          if (scheme.equals("http") || scheme.equals("https") &&
    65                  server != null) {
    66              // Update connection problems counter
    67              if(curi.getFetchStatus() == S_CONNECT_FAILED) {
    68                  server.incrementConsecutiveConnectionErrors();
    69              } else if (curi.getFetchStatus() > 0){
    70                  server.resetConsecutiveConnectionErrors();
    71              }
    72
    73              // Update robots info
    74              try {
    75                  if (curi.getUURI().getPath() != null &&
    76                          curi.getUURI().getPath().equals("/robots.txt")) {
    77                      // Update server with robots info
    78                      server.updateRobots(curi);
    79                  }
    80              }
    81              catch (URIException e) {
    82                  logger.severe("Failed get path on " + curi.getUURI());
    83              }
    84          }
    85      }
    86  }