Plone: Remove versions of deleted objects

remove_versions_of_deleted_objects.py

from AccessControl.SecurityManagement import newSecurityManager
from pprint import pprint
from Products.CMFCore.utils import getToolByName
from Products.CMFPlone.interfaces import IPloneSiteRoot
from Testing.makerequest import makerequest
from zope.app.component.hooks import setSite


app = globals()['app']
user = None

while not user:
    user = app.acl_users.getUser(raw_input('Admin user ID (Zope level): ').strip())

user = user.__of__(app.acl_users)
newSecurityManager(app, user)
app = makerequest(app)

overview_view = app.restrictedTraverse('plone-overview')
print 'SITES:'
for site in overview_view.sites():
    print '-', '/'.join(site.getPhysicalPath())

while True:
    site_path = raw_input('Path to Plone site to update: ').strip().strip('/')
    try:
        site = app.restrictedTraverse(site_path)
    except Exception, exc:
        print 'ERROR:', exc
    else:
        print 'FOUND:', site
        if not IPloneSiteRoot.providedBy(site):
            print 'ERROR: not a Plone site:', site
        else:
            break

setSite(site)

historiesstorage = getToolByName(site, 'portal_historiesstorage')
hidhandler = getToolByName(site, "portal_historyidhandler")
shadowstorage = historiesstorage._getShadowStorage()._storage
versions_repo = historiesstorage._getZVCRepo()

print 'Gathering statistics..'
statistics = historiesstorage.zmi_getStorageStatistics()

pprint(statistics['summaries'])
print ''
print 'Deleting', statistics['summaries']['deletedHistories'], 'histories', \
    'and', statistics['summaries']['deletedVersions'], 'versions.'

for historyinfo in statistics['deleted']:
    history_id = historyinfo['history_id']
    history = historiesstorage._getShadowHistory(history_id)

    for zvc_key in set([
            historiesstorage._getZVCAccessInfo(history_id, selector, True)[0]
            for selector in history._available]):
        if zvc_key in versions_repo._histories:
            del versions_repo._histories[zvc_key]

    shadowstorage.pop(history_id, None)

import transaction
transaction.commit()
print 'All done.'

I would remove the complete VersionHistory object instead of wiping it's _versions attribute (lines 39-41):

if zvc_key in versions_repo._histories:
    del versions_repo._histories[zvc_key]

Deleting the version_id attribute from the object should not be necessary as the object shouldn't exist anymore (lines 45-47). I would expect obj is always None in this case.

@buchi thanks, updated 😉