org.apache.nutch.protocol.ftp
Class FtpRobotRulesParser

java.lang.Object
  org.apache.nutch.protocol.RobotRulesParser
      org.apache.nutch.protocol.ftp.FtpRobotRulesParser

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable

public class FtpRobotRulesParser
extends RobotRulesParser

This class is used for parsing robots for urls belonging to FTP protocol. It extends the generic RobotRulesParser class and contains Ftp protocol specific implementation for obtaining the robots file.

Field Summary

static org.slf4j.Logger

LOG

Fields inherited from class org.apache.nutch.protocol.RobotRulesParser

agentNames, CACHE, EMPTY_RULES, FORBID_ALL_RULES

Constructor Summary

FtpRobotRulesParser(org.apache.hadoop.conf.Configuration conf)

Method Summary

crawlercommons.robots.BaseRobotRules

getRobotRulesSet(Protocol ftp, URL url) The hosts for which the caching of robots rules is yet to be done, it sends a Ftp request to the host corresponding to the URL passed, gets robots file, parses the rules and caches the rules object to avoid re-work in future.

Methods inherited from class org.apache.nutch.protocol.RobotRulesParser

getConf, getRobotRulesSet, main, parseRules, setConf

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOG

public static final org.slf4j.Logger LOG

Constructor Detail

FtpRobotRulesParser

public FtpRobotRulesParser(org.apache.hadoop.conf.Configuration conf)

Method Detail

getRobotRulesSet

public crawlercommons.robots.BaseRobotRules getRobotRulesSet(Protocol ftp,
                                                             URL url)

The hosts for which the caching of robots rules is yet to be done, it sends a Ftp request to the host corresponding to the URL passed, gets robots file, parses the rules and caches the rules object to avoid re-work in future.

Specified by:

getRobotRulesSet in class RobotRulesParser

Parameters:

ftp - The Protocol object

url - URL

Returns:

robotRules A BaseRobotRules object for the rules