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Remove outdated items from the catalog

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Documentation

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Usage and goal

Add collective.catalogcleanup to the eggs in your buildout (and to zcml on Plone 3.2 or earlier). This makes a browser view available on the Plone Site root: @@collective-catalogcleanup.

This goes through the portal_catalog and removes all catalog brains for which a getObject call does not work. In other words, it removes brains that no longer belong to an actual object in the site.

Similar cleanups are done for the uid_catalog and the reference_catalog.

The goal is to get rid of outdated brains that could otherwise cause problems, for example during an upgrade to Plone 4.

@@collective-catalogcleanup by default does a dry run, so it only reports problems. Call it with @@collective-catalogcleanup?dry_run=false to perform the actual cleanup.

Details

So what does the catalog cleanup do?

  • It removes stuff! You must make a backup first!

  • It handles these catalogs: portal_catalog, uid_catalog, reference_catalog.

  • For each catalog it reports the number of catalog brains it contains.

  • It removes brains that have a UID of None.

  • It removes brains of which the object is broken. This can happen when the object belongs to a package that is no longer available in the Plone Site.

  • It removes brains of which the object cannot be found.

  • It looks for non unique uids. There can be some legitimate reasons why some brains may have the same UID, for example when they belong to comments: the UID is inherited from the parent object. Those items are kept. For other items we accept one object and we give the other objects a new UID.

  • References between objects that no longer exist or are broken, will be removed.

  • A simple report will be printed in the browser. For one catalog it may look like this:

    Handling catalog portal_catalog.
    Brains in portal_catalog: 20148
    portal_catalog: removed 25 brains without UID.
    portal_catalog: removed 100 brains with status broken.
    portal_catalog: removed 5 brains with status notfound.
    portal_catalog: 249 non unique uids found.
    portal_catalog: 249 items given new unique uids.
    
  • The instance log may contain more info, about individual items.

Alternatives

  • A clear and rebuild of the portal_catalog should have partially the same effect, but it will likely take a lot longer and it will not solve some of the problems mentioned above. But this is definitely the most logical thing to try before giving collective.catalogcleanup a go.

Compatibility

I have tried this on Plone 3.3, Plone 4 and Plone 5.

It is automatically tested by Travis on Plone 4.3, 5.0, and 5.1, all on Python 2.7.

Authors

Maurits van Rees

Changelog

1.11.2 (2021-08-24)

  • Do not complain about paths being different when the brain path is relative. Happens in old uid_catalog and reference_catalog. [maurits]

1.11.1 (2021-08-13)

  • Again fixed error sorting UIDs when one of them is None. [maurits]

1.11.0 (2021-07-29)

  • Report and remove brains that have a wrong path. These are brains where an object is found at the given path, but the actual path of this object is different. This can be caused by acquisition: /Plone/folder/folder has gotten in the catalog, but really only /Plone/folder exists. [maurits]
  • Fixed error sorting UIDs when one of them is None. [maurits]

1.10.0 (2020-02-08)

  • To get all brains, use catalog.getAllBrains when available. This is available in Products.ZCatalog 2.13.30+ or 4.1+. We fall back to unrestrictedSearchResults and otherwise just call the catalog. Fixes issue 16. [maurits]
  • Bug 22: Fix startup error when Archetypes is missing. Fix other Plone 5.2 and Python 3 errors. Should be compatible with Plone 4.3, 5.1 and 5.2 now. [maurits]

1.9.0 (2018-09-25)

  • Catch TypeError when getting object for brain. Can happen when an object that used to be referenceable is no longer referenceable. Fixes issue #19. [maurits]
  • Disable CSRF protection. Fixes issue #17. [maurits]
  • Abort any transaction changes in dry run mode. There should not be any changes here anyway, but this makes sure. [maurits]

1.8.0 (2018-04-30)

  • No longer test on Plone 4.1 and 4.2 and on Python 2.6. [maurits]
  • Catch KeyError and AttributeError for getPath in more cases. Fixes issue #14. [maurits]

1.7.2 (2017-09-18)

  • Added traceback info to help in case of problems. [maurits]

1.7.1 (2017-03-07)

  • Tested for compatibility on Plone 4.0 through 5.1. [hvelarde]
  • Ignore non existing catalogs. Plone 5 does not always have a uid_catalog or reference_catalog. Fixes issue #5. [maurits]

1.7 (2017-03-03)

  • Don’t look for non unique ids in the reference_catalog. It looks like it is normal there. At least, on one Plone 4.3 site the code keeps creating several new uids every time I run it. [maurits]
  • Don’t complain about brains in reference_catalog where getObject returns None. This happens for content without apparent problems. [maurits]

1.6 (2016-08-23)

  • Do not complain about brains in uid_catalog that are references. When their path points to ...at_references/<uid of brain> then this is normal. I started wondering about a site that had more than 20 thousand problems reported this way. [maurits]

1.5 (2015-07-31)

  • Remove all items that have the portal_factory folder in their path. [maurits]

1.4 (2014-05-12)

  • Catch KeyErrors when getting the path of a brain. [maurits]

1.3 (2013-09-02)

  • Give less confusing message for comments that inherit the UID of their parent. It sounded too much like an error. [maurits]

1.2 (2012-06-04)

  • Improved the cleanup of non unique uids. [maurits]

1.1 (2012-05-14)

  • When doing an reindexObject, only reindex the UID. [maurits]

1.0 (2012-04-27)

  • Initial release [maurits]

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