NetarchiveSuite
Harvester assigment 1: Upgrade to Heritrix release 3
This assignment contains the subtasks needed to upgrade NetarchiveSuite to use Heritrix 3.0.0+ Note that Internet Archive, the maintainer of Heritrix more or less deprecates the use of Heritrix 2.0+ Therefore we will bypass the 2.0 branch of Heritrix.
Tasks
Task A
Download binary copy of Heritrix, and update the contents of lib/heritrix, lib/heritrix-dependencies, and make the appropiate changes to our build.xml
The deduplication-X-Y-Z.jar (if we're still using this module for deduplication) needs to be recompiled with the new Heritrix.
Estimated time: 1 MD
Task B
All heritrix templates bundled with NetarchiveSuite needs to be migrated to the new format.
This task includes the writing of extensive documentation on how to migrate.
Beware that already generated jobs that are in one of the states (submitted, started or failed) will not be resubmittable. So it is a good idea to minimise this number, for instance by disabling all active harvestdefinitions.
Consider adding a versioning schema to the "order_templates" table This versionnumber is then added to the jobs table to supplement the fields "orderxml" and "orderxmldoc"
Estimated time: 5 MD
Task C
Upgrade the classes "Job", "JobDBDAO", "JobDAO" to handle the new kind of templates. This goes for HeritrixTemplate as well
Estimated time: 5 MD
Task D
Upgrade the classes in the dk.netarkivet.harvester.harvesting package to communicate with Heritrix 3.