dk.netarkivet.harvester.harvesting.controller
Class DefaultHeritrixLauncher

java.lang.Object
  dk.netarkivet.harvester.harvesting.HeritrixLauncher
      dk.netarkivet.harvester.harvesting.controller.DefaultHeritrixLauncher

public class DefaultHeritrixLauncher
extends HeritrixLauncher

Default implementation of the crawl control.

Field Summary

(package private) org.apache.commons.logging.Log

log The class logger.

Fields inherited from class dk.netarkivet.harvester.harvesting.HeritrixLauncher

CRAWL_CONTROL_WAIT_PERIOD

Method Summary

void	doCrawl() This method launches heritrix in the following way: 1.
static DefaultHeritrixLauncher	getInstance(HeritrixFiles files) Get instance of this class.

Methods inherited from class dk.netarkivet.harvester.harvesting.HeritrixLauncher

getControllerArguments, getHeritrixFiles, getJMSConnection, isDeduplicationEnabledInTemplate, setupOrderfile

Methods inherited from class java.lang.Object

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

Field Detail

log

final org.apache.commons.logging.Log log

The class logger.

Method Detail

getInstance

public static DefaultHeritrixLauncher getInstance(HeritrixFiles files)
                                           throws ArgumentNotValid

Get instance of this class.

Parameters:

files - Object encapsulating location of Heritrix crawldir and configuration files

Returns:

DefaultHeritrixLauncher object

Throws:

ArgumentNotValid - If either order.xml or seeds.txt does not exist, or argument files is null.

doCrawl

public void doCrawl()
             throws IOFailure

This method launches heritrix in the following way:
1. copies the orderfile and the seedsfile to current working directory.
2. sets up the newly created copy of the orderfile
3. starts the crawler
4. stops the crawler (Either when heritrix has finished crawling, or when heritrix is forcefully stopped due to inactivity).

The exit from the while-loop depends on Heritrix calling the crawlEnded() method, when the crawling is finished. This method is called from the HarvestControllerServer.onDoOneCrawl() method.

Specified by:

doCrawl in class HeritrixLauncher

Throws:

IOFailure - - if the order.xml is invalid if unable to initialize Heritrix CrawlController if Heritrix process interrupted