[migration] hackish black magic to bootstrap addition of formula attr during migration
Turns out we can't add an attribute to CWAttribute before the attribute
exists. add_attribute generates rql with a 'formula' relation, which CW
doesn't know about yet, so things get unhappy. Once that is fixed, we
need to make the CWAttribute addition operation deal with CWAttribute
entities that don't have a formula yet.
Finally, move the migration to bootstrapmigration_repository so it
happens early on, and use add_entity_type rather than add_relation_type
for CWComputedRType.
from base64 import b64decode, b64encode
try:
uri, newdn = __args__
except ValueError:
print 'USAGE: cubicweb-ctl shell <instance> ldap_change_base_dn.py -- <ldap source uri> <new dn>'
print
print 'you should not have updated your sources file yet'
olddn = repo.sources_by_uri[uri].config['user-base-dn']
assert olddn != newdn
raw_input("Ensure you've stopped the instance, type enter when done.")
for eid, extid in sql("SELECT eid, extid FROM entities WHERE source='%s'" % uri):
olduserdn = b64decode(extid)
newuserdn = olduserdn.replace(olddn, newdn)
if newuserdn != olduserdn:
print olduserdn, '->', newuserdn
sql("UPDATE entities SET extid='%s' WHERE eid=%s" % (b64encode(newuserdn), eid))
commit()
print 'you can now update the sources file to the new dn and restart the instance'