https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=34088

David Cook <[email protected]> changed:

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--- Comment #9 from David Cook <[email protected]> ---
Created attachment 152996
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https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=152996&action=edit
Bug 34088: Short circuit database upgrade check

If the database version and the code version are the same, we should
short circuit and exit immediately.

This patch adds the Koha::Installer module which can very quickly
check if a db or atomic update is needed.

It also moves the logic for C4::Installer::TransformToNum to
Koha::Installer::TransformToNum for performance reasons.

It also moves the logic for C4::Installer::get_atomic_updates to
Koha::Installer::get_atomic_updates for performance reasons.

Test plan:
1. Apply patch
2. Run `time koha-upgrade-schema kohadev`
3. Note that it completes in less than .1 seconds

4. To test db updates, change the database Version to a number
slightly behind the code version, and run
`time koha-upgrade-schema kohadev`
5. Note that the correct version update is processed

6. To test atomic updates:
cp installer/data/mysql/atomicupdate/skeleton.pl \
       installer/data/mysql/atomicupdate/bug_34088.pl
7. Run `time koha-upgrade-schema kohadev`
8. Note that it takes over 1 second to run and the atomic update
is attempted

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