"""Check integrity of a CubicWeb repository. Hum actually only the system database
is checked.
:organization: Logilab
:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
"""
__docformat__ = "restructuredtext en"
import sys
from datetime import datetime
from logilab.common.shellutils import ProgressBar
from cubicweb.server.sqlutils import SQL_PREFIX
def has_eid(sqlcursor, eid, eids):
"""return true if the eid is a valid eid"""
if eids.has_key(eid):
return eids[eid]
sqlcursor.execute('SELECT type, source FROM entities WHERE eid=%s' % eid)
try:
etype, source = sqlcursor.fetchone()
except:
eids[eid] = False
return False
if source and source != 'system':
# XXX what to do...
eids[eid] = True
return True
sqlcursor.execute('SELECT * FROM %s%s WHERE %seid=%s' % (SQL_PREFIX, etype,
SQL_PREFIX, eid))
result = sqlcursor.fetchall()
if len(result) == 0:
eids[eid] = False
return False
elif len(result) > 1:
msg = ' More than one entity with eid %s exists in source !'
print >> sys.stderr, msg % eid
print >> sys.stderr, ' WARNING : Unable to fix this, do it yourself !'
eids[eid] = True
return True
# XXX move to yams?
def etype_fti_containers(eschema, _done=None):
if _done is None:
_done = set()
_done.add(eschema)
containers = tuple(eschema.fulltext_containers())
if containers:
for rschema, target in containers:
if target == 'object':
targets = rschema.objects(eschema)
else:
targets = rschema.subjects(eschema)
for targeteschema in targets:
if targeteschema in _done:
continue
_done.add(targeteschema)
for container in etype_fti_containers(targeteschema, _done):
yield container
else:
yield eschema
def reindex_entities(schema, session):
"""reindex all entities in the repository"""
# deactivate modification_date hook since we don't want them
# to be updated due to the reindexation
from cubicweb.server.hooks import (setmtime_before_update_entity,
uniquecstrcheck_before_modification)
from cubicweb.server.repository import FTIndexEntityOp
repo = session.repo
repo.hm.unregister_hook(setmtime_before_update_entity,
'before_update_entity', '')
repo.hm.unregister_hook(uniquecstrcheck_before_modification,
'before_update_entity', '')
repo.do_fti = True # ensure full-text indexation is activated
etypes = set()
for eschema in schema.entities():
if eschema.is_final():
continue
indexable_attrs = tuple(eschema.indexable_attributes()) # generator
if not indexable_attrs:
continue
for container in etype_fti_containers(eschema):
etypes.add(container)
print 'Reindexing entities of type %s' % \
', '.join(sorted(str(e) for e in etypes))
pb = ProgressBar(len(etypes) + 1)
# first monkey patch Entity.check to disable validation
from cubicweb.entity import Entity
_check = Entity.check
Entity.check = lambda self, creation=False: True
# clear fti table first
session.system_sql('DELETE FROM %s' % session.repo.system_source.dbhelper.fti_table)
pb.update()
# reindex entities by generating rql queries which set all indexable
# attribute to their current value
for eschema in etypes:
for entity in session.execute('Any X WHERE X is %s' % eschema).entities():
FTIndexEntityOp(session, entity=entity)
pb.update()
# restore Entity.check
Entity.check = _check
def check_schema(schema, session, eids, fix=1):
"""check serialized schema"""
print 'Checking serialized schema'
unique_constraints = ('SizeConstraint', 'FormatConstraint',
'VocabularyConstraint', 'RQLConstraint',
'RQLVocabularyConstraint')
rql = ('Any COUNT(X),RN,EN,ECTN GROUPBY RN,EN,ECTN ORDERBY 1 '
'WHERE X is CWConstraint, R constrained_by X, '
'R relation_type RT, R from_entity ET, RT name RN, '
'ET name EN, X cstrtype ECT, ECT name ECTN')
for count, rn, en, cstrname in session.execute(rql):
if count == 1:
continue
if cstrname in unique_constraints:
print "ERROR: got %s %r constraints on relation %s.%s" % (
count, cstrname, en, rn)
def check_text_index(schema, session, eids, fix=1):
"""check all entities registered in the text index"""
print 'Checking text index'
cursor = session.system_sql('SELECT uid FROM appears;')
for row in cursor.fetchall():
eid = row[0]
if not has_eid(cursor, eid, eids):
msg = ' Entity with eid %s exists in the text index but in no source'
print >> sys.stderr, msg % eid,
if fix:
session.system_sql('DELETE FROM appears WHERE uid=%s;' % eid)
print >> sys.stderr, ' [FIXED]'
else:
print >> sys.stderr
def check_entities(schema, session, eids, fix=1):
"""check all entities registered in the repo system table"""
print 'Checking entities system table'
cursor = session.system_sql('SELECT eid FROM entities;')
for row in cursor.fetchall():
eid = row[0]
if not has_eid(cursor, eid, eids):
msg = ' Entity with eid %s exists in the system table but in no source'
print >> sys.stderr, msg % eid,
if fix:
session.system_sql('DELETE FROM entities WHERE eid=%s;' % eid)
print >> sys.stderr, ' [FIXED]'
else:
print >> sys.stderr
print 'Checking entities tables'
for eschema in schema.entities():
if eschema.is_final():
continue
table = SQL_PREFIX + eschema.type
column = SQL_PREFIX + 'eid'
cursor = session.system_sql('SELECT %s FROM %s;' % (column, table))
for row in cursor.fetchall():
eid = row[0]
# eids is full since we have fetched everyting from the entities table,
# no need to call has_eid
if not eid in eids or not eids[eid]:
msg = ' Entity with eid %s exists in the %s table but not in the system table'
print >> sys.stderr, msg % (eid, eschema.type),
if fix:
session.system_sql('DELETE FROM %s WHERE %s=%s;' % (table, column, eid))
print >> sys.stderr, ' [FIXED]'
else:
print >> sys.stderr
def bad_related_msg(rtype, target, eid, fix):
msg = ' A relation %s with %s eid %s exists but no such entity in sources'
print >> sys.stderr, msg % (rtype, target, eid),
if fix:
print >> sys.stderr, ' [FIXED]'
else:
print >> sys.stderr
def check_relations(schema, session, eids, fix=1):
"""check all relations registered in the repo system table"""
print 'Checking relations'
for rschema in schema.relations():
if rschema.is_final():
continue
if rschema == 'identity':
continue
if rschema.inlined:
for subjtype in rschema.subjects():
table = SQL_PREFIX + str(subjtype)
column = SQL_PREFIX + str(rschema)
sql = 'SELECT %s FROM %s WHERE %s IS NOT NULL;' % (
column, table, column)
cursor = session.system_sql(sql)
for row in cursor.fetchall():
eid = row[0]
if not has_eid(cursor, eid, eids):
bad_related_msg(rschema, 'object', eid, fix)
if fix:
sql = 'UPDATE %s SET %s = NULL WHERE %seid=%s;' % (
table, column, SQL_PREFIX, eid)
session.system_sql(sql)
continue
cursor = session.system_sql('SELECT eid_from FROM %s_relation;' % rschema)
for row in cursor.fetchall():
eid = row[0]
if not has_eid(cursor, eid, eids):
bad_related_msg(rschema, 'subject', eid, fix)
if fix:
sql = 'DELETE FROM %s_relation WHERE eid_from=%s;' % (
rschema, eid)
session.system_sql(sql)
cursor = session.system_sql('SELECT eid_to FROM %s_relation;' % rschema)
for row in cursor.fetchall():
eid = row[0]
if not has_eid(cursor, eid, eids):
bad_related_msg(rschema, 'object', eid, fix)
if fix:
sql = 'DELETE FROM %s_relation WHERE eid_to=%s;' % (
rschema, eid)
session.system_sql(sql)
def check_metadata(schema, session, eids, fix=1):
"""check entities has required metadata
FIXME: rewrite using RQL queries ?
"""
print 'Checking metadata'
cursor = session.system_sql("SELECT DISTINCT type FROM entities;")
eidcolumn = SQL_PREFIX + 'eid'
for etype, in cursor.fetchall():
table = SQL_PREFIX + etype
for rel, default in ( ('creation_date', datetime.now()),
('modification_date', datetime.now()), ):
column = SQL_PREFIX + rel
cursor = session.system_sql("SELECT %s FROM %s WHERE %s is NULL"
% (eidcolumn, table, column))
for eid, in cursor.fetchall():
msg = ' %s with eid %s has no %s'
print >> sys.stderr, msg % (etype, eid, rel),
if fix:
session.system_sql("UPDATE %s SET %s=%%(v)s WHERE %s=%s ;"
% (table, column, eidcolumn, eid),
{'v': default})
print >> sys.stderr, ' [FIXED]'
else:
print >> sys.stderr
cursor = session.system_sql('SELECT MIN(%s) FROM %sCWUser;' % (eidcolumn,
SQL_PREFIX))
default_user_eid = cursor.fetchone()[0]
assert default_user_eid is not None, 'no user defined !'
for rel, default in ( ('owned_by', default_user_eid), ):
cursor = session.system_sql("SELECT eid, type FROM entities "
"WHERE NOT EXISTS "
"(SELECT 1 FROM %s_relation WHERE eid_from=eid);"
% rel)
for eid, etype in cursor.fetchall():
msg = ' %s with eid %s has no %s relation'
print >> sys.stderr, msg % (etype, eid, rel),
if fix:
session.system_sql('INSERT INTO %s_relation VALUES (%s, %s) ;'
% (rel, eid, default))
print >> sys.stderr, ' [FIXED]'
else:
print >> sys.stderr
def check(repo, cnx, checks, reindex, fix):
"""check integrity of application's repository,
using given user and password to locally connect to the repository
(no running cubicweb server needed)
"""
session = repo._get_session(cnx.sessionid, setpool=True)
# yo, launch checks
if checks:
eids_cache = {}
for check in checks:
check_func = globals()['check_%s' % check]
check_func(repo.schema, session, eids_cache, fix=fix)
if fix:
cnx.commit()
else:
print
if not fix:
print 'WARNING: Diagnostic run, nothing has been corrected'
if reindex:
cnx.rollback()
session.set_pool()
reindex_entities(repo.schema, session)
cnx.commit()