# copyright 2003-2014 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
"""Integrity checking tool for instances:
* integrity of a CubicWeb repository. Hum actually only the system database is
checked.
"""
__docformat__ = "restructuredtext en"
import sys
from datetime import datetime
from logilab.common.shellutils import ProgressBar
from cubicweb.schema import PURE_VIRTUAL_RTYPES, VIRTUAL_RTYPES
from cubicweb.server.sqlutils import SQL_PREFIX
def notify_fixed(fix):
if fix:
sys.stderr.write(' [FIXED]')
sys.stderr.write('\n')
def has_eid(cnx, sqlcursor, eid, eids):
"""return true if the eid is a valid eid"""
if eid in eids:
return eids[eid]
sqlcursor.execute('SELECT type FROM entities WHERE eid=%s' % eid)
try:
etype = sqlcursor.fetchone()[0]
except Exception:
eids[eid] = False
return False
if etype not in cnx.vreg.schema:
eids[eid] = False
return False
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!\n'
' WARNING : Unable to fix this, do it yourself!\n')
sys.stderr.write(msg % eid)
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, cnx, withpb=True, etypes=None):
"""reindex all entities in the repository"""
# deactivate modification_date hook since we don't want them
# to be updated due to the reindexation
repo = cnx.repo
dbhelper = repo.system_source.dbhelper
with cnx.ensure_cnx_set:
cursor = cnx.cnxset.cu
if not dbhelper.has_fti_table(cursor):
print 'no text index table'
dbhelper.init_fti(cursor)
repo.system_source.do_fti = True # ensure full-text indexation is activated
if etypes is None:
print 'Reindexing entities'
etypes = set()
for eschema in schema.entities():
if eschema.final:
continue
indexable_attrs = tuple(eschema.indexable_attributes()) # generator
if not indexable_attrs:
continue
for container in etype_fti_containers(eschema):
etypes.add(container)
# clear fti table first
cnx.system_sql('DELETE FROM %s' % dbhelper.fti_table)
else:
print 'Reindexing entities of type %s' % \
', '.join(sorted(str(e) for e in etypes))
# clear fti table first. Use subquery for sql compatibility
cnx.system_sql("DELETE FROM %s WHERE EXISTS(SELECT 1 FROM ENTITIES "
"WHERE eid=%s AND type IN (%s))" % (
dbhelper.fti_table, dbhelper.fti_uid_attr,
','.join("'%s'" % etype for etype in etypes)))
if withpb:
pb = ProgressBar(len(etypes) + 1)
pb.update()
# reindex entities by generating rql queries which set all indexable
# attribute to their current value
source = repo.system_source
for eschema in etypes:
etype_class = cnx.vreg['etypes'].etype_class(str(eschema))
for fti_rql in etype_class.cw_fti_index_rql_queries(cnx):
rset = cnx.execute(fti_rql)
source.fti_index_entities(cnx, rset.entities())
# clear entity cache to avoid high memory consumption on big tables
cnx.drop_entity_cache()
if withpb:
pb.update()
if withpb:
pb.finish()
def check_schema(schema, cnx, eids, fix=1):
"""check serialized schema"""
print 'Checking serialized schema'
unique_constraints = ('SizeConstraint', 'FormatConstraint',
'VocabularyConstraint',
'RQLVocabularyConstraint')
rql = ('Any COUNT(X),RN,SN,ON,CTN GROUPBY RN,SN,ON,CTN ORDERBY 1 '
'WHERE X is CWConstraint, R constrained_by X, '
'R relation_type RT, RT name RN, R from_entity ST, ST name SN, '
'R to_entity OT, OT name ON, X cstrtype CT, CT name CTN')
for count, rn, sn, on, cstrname in cnx.execute(rql):
if count == 1:
continue
if cstrname in unique_constraints:
print "ERROR: got %s %r constraints on relation %s.%s.%s" % (
count, cstrname, sn, rn, on)
if fix:
print 'dunno how to fix, do it yourself'
def check_text_index(schema, cnx, eids, fix=1):
"""check all entities registered in the text index"""
print 'Checking text index'
msg = ' Entity with eid %s exists in the text index but in no source (autofix will remove from text index)'
cursor = cnx.system_sql('SELECT uid FROM appears;')
for row in cursor.fetchall():
eid = row[0]
if not has_eid(cnx, cursor, eid, eids):
sys.stderr.write(msg % eid)
if fix:
cnx.system_sql('DELETE FROM appears WHERE uid=%s;' % eid)
notify_fixed(fix)
def check_entities(schema, cnx, eids, fix=1):
"""check all entities registered in the repo system table"""
print 'Checking entities system table'
# system table but no source
msg = ' Entity %s with eid %s exists in the system table but in no source (autofix will delete the entity)'
cursor = cnx.system_sql('SELECT eid,type FROM entities;')
for row in cursor.fetchall():
eid, etype = row
if not has_eid(cnx, cursor, eid, eids):
sys.stderr.write(msg % (etype, eid))
if fix:
cnx.system_sql('DELETE FROM entities WHERE eid=%s;' % eid)
notify_fixed(fix)
# source in entities, but no relation cw_source
# XXX this (get_versions) requires a second connection to the db when we already have one open
applcwversion = cnx.repo.get_versions().get('cubicweb')
if applcwversion >= (3, 13, 1): # entities.asource appeared in 3.13.1
cursor = cnx.system_sql('SELECT e.eid FROM entities as e, cw_CWSource as s '
'WHERE s.cw_name=e.asource AND '
'NOT EXISTS(SELECT 1 FROM cw_source_relation as cs '
' WHERE cs.eid_from=e.eid AND cs.eid_to=s.cw_eid) '
'ORDER BY e.eid')
msg = (' Entity with eid %s refers to source in entities table, '
'but is missing relation cw_source (autofix will create the relation)\n')
for row in cursor.fetchall():
sys.stderr.write(msg % row[0])
if fix:
cnx.system_sql('INSERT INTO cw_source_relation (eid_from, eid_to) '
'SELECT e.eid, s.cw_eid FROM entities as e, cw_CWSource as s '
'WHERE s.cw_name=e.asource AND NOT EXISTS(SELECT 1 FROM cw_source_relation as cs '
' WHERE cs.eid_from=e.eid AND cs.eid_to=s.cw_eid)')
notify_fixed(True)
# inconsistencies for 'is'
msg = ' %s #%s is missing relation "is" (autofix will create the relation)\n'
cursor = cnx.system_sql('SELECT e.type, e.eid FROM entities as e, cw_CWEType as s '
'WHERE s.cw_name=e.type AND NOT EXISTS(SELECT 1 FROM is_relation as cs '
' WHERE cs.eid_from=e.eid AND cs.eid_to=s.cw_eid) '
'ORDER BY e.eid')
for row in cursor.fetchall():
sys.stderr.write(msg % row)
if fix:
cnx.system_sql('INSERT INTO is_relation (eid_from, eid_to) '
'SELECT e.eid, s.cw_eid FROM entities as e, cw_CWEType as s '
'WHERE s.cw_name=e.type AND NOT EXISTS(SELECT 1 FROM is_relation as cs '
' WHERE cs.eid_from=e.eid AND cs.eid_to=s.cw_eid)')
notify_fixed(True)
# inconsistencies for 'is_instance_of'
msg = ' %s #%s is missing relation "is_instance_of" (autofix will create the relation)\n'
cursor = cnx.system_sql('SELECT e.type, e.eid FROM entities as e, cw_CWEType as s '
'WHERE s.cw_name=e.type AND NOT EXISTS(SELECT 1 FROM is_instance_of_relation as cs '
' WHERE cs.eid_from=e.eid AND cs.eid_to=s.cw_eid) '
'ORDER BY e.eid')
for row in cursor.fetchall():
sys.stderr.write(msg % row)
if fix:
cnx.system_sql('INSERT INTO is_instance_of_relation (eid_from, eid_to) '
'SELECT e.eid, s.cw_eid FROM entities as e, cw_CWEType as s '
'WHERE s.cw_name=e.type AND NOT EXISTS(SELECT 1 FROM is_instance_of_relation as cs '
' WHERE cs.eid_from=e.eid AND cs.eid_to=s.cw_eid)')
notify_fixed(True)
print 'Checking entities tables'
msg = ' Entity with eid %s exists in the %s table but not in the system table (autofix will delete the entity)'
for eschema in schema.entities():
if eschema.final:
continue
table = SQL_PREFIX + eschema.type
column = SQL_PREFIX + 'eid'
cursor = cnx.system_sql('SELECT %s FROM %s;' % (column, table))
for row in cursor.fetchall():
eid = row[0]
# eids is full since we have fetched everything from the entities table,
# no need to call has_eid
if not eid in eids or not eids[eid]:
sys.stderr.write(msg % (eid, eschema.type))
if fix:
cnx.system_sql('DELETE FROM %s WHERE %s=%s;' % (table, column, eid))
notify_fixed(fix)
def bad_related_msg(rtype, target, eid, fix):
msg = ' A relation %s with %s eid %s exists but no such entity in sources'
sys.stderr.write(msg % (rtype, target, eid))
notify_fixed(fix)
def bad_inlined_msg(rtype, parent_eid, eid, fix):
msg = (' An inlined relation %s from %s to %s exists but the latter '
'entity does not exist')
sys.stderr.write(msg % (rtype, parent_eid, eid))
notify_fixed(fix)
def check_relations(schema, cnx, eids, fix=1):
"""check that eids referenced by relations are registered in the repo system
table
"""
print 'Checking relations'
for rschema in schema.relations():
if rschema.final or rschema.type in PURE_VIRTUAL_RTYPES:
continue
if rschema.inlined:
for subjtype in rschema.subjects():
table = SQL_PREFIX + str(subjtype)
column = SQL_PREFIX + str(rschema)
sql = 'SELECT cw_eid,%s FROM %s WHERE %s IS NOT NULL;' % (
column, table, column)
cursor = cnx.system_sql(sql)
for row in cursor.fetchall():
parent_eid, eid = row
if not has_eid(cnx, cursor, eid, eids):
bad_inlined_msg(rschema, parent_eid, eid, fix)
if fix:
sql = 'UPDATE %s SET %s=NULL WHERE %s=%s;' % (
table, column, column, eid)
cnx.system_sql(sql)
continue
try:
cursor = cnx.system_sql('SELECT eid_from FROM %s_relation;' % rschema)
except Exception as ex:
# usually because table doesn't exist
print 'ERROR', ex
continue
for row in cursor.fetchall():
eid = row[0]
if not has_eid(cnx, cursor, eid, eids):
bad_related_msg(rschema, 'subject', eid, fix)
if fix:
sql = 'DELETE FROM %s_relation WHERE eid_from=%s;' % (
rschema, eid)
cnx.system_sql(sql)
cursor = cnx.system_sql('SELECT eid_to FROM %s_relation;' % rschema)
for row in cursor.fetchall():
eid = row[0]
if not has_eid(cnx, cursor, eid, eids):
bad_related_msg(rschema, 'object', eid, fix)
if fix:
sql = 'DELETE FROM %s_relation WHERE eid_to=%s;' % (
rschema, eid)
cnx.system_sql(sql)
def check_mandatory_relations(schema, cnx, eids, fix=1):
"""check entities missing some mandatory relation"""
print 'Checking mandatory relations'
msg = '%s #%s is missing mandatory %s relation %s (autofix will delete the entity)'
for rschema in schema.relations():
if rschema.final or rschema in PURE_VIRTUAL_RTYPES or rschema in ('is', 'is_instance_of'):
continue
smandatory = set()
omandatory = set()
for rdef in rschema.rdefs.itervalues():
if rdef.cardinality[0] in '1+':
smandatory.add(rdef.subject)
if rdef.cardinality[1] in '1+':
omandatory.add(rdef.object)
for role, etypes in (('subject', smandatory), ('object', omandatory)):
for etype in etypes:
if role == 'subject':
rql = 'Any X WHERE NOT X %s Y, X is %s' % (rschema, etype)
else:
rql = 'Any X WHERE NOT Y %s X, X is %s' % (rschema, etype)
for entity in cnx.execute(rql).entities():
sys.stderr.write(msg % (entity.cw_etype, entity.eid, role, rschema))
if fix:
#if entity.cw_describe()['source']['uri'] == 'system': XXX
entity.cw_delete() # XXX this is BRUTAL!
notify_fixed(fix)
def check_mandatory_attributes(schema, cnx, eids, fix=1):
"""check for entities stored in the system source missing some mandatory
attribute
"""
print 'Checking mandatory attributes'
msg = '%s #%s is missing mandatory attribute %s (autofix will delete the entity)'
for rschema in schema.relations():
if not rschema.final or rschema in VIRTUAL_RTYPES:
continue
for rdef in rschema.rdefs.itervalues():
if rdef.cardinality[0] in '1+':
rql = 'Any X WHERE X %s NULL, X is %s, X cw_source S, S name "system"' % (
rschema, rdef.subject)
for entity in cnx.execute(rql).entities():
sys.stderr.write(msg % (entity.cw_etype, entity.eid, rschema))
if fix:
entity.cw_delete()
notify_fixed(fix)
def check_metadata(schema, cnx, eids, fix=1):
"""check entities has required metadata
FIXME: rewrite using RQL queries ?
"""
print 'Checking metadata'
cursor = cnx.system_sql("SELECT DISTINCT type FROM entities;")
eidcolumn = SQL_PREFIX + 'eid'
msg = ' %s with eid %s has no %s (autofix will set it to now)'
for etype, in cursor.fetchall():
if etype not in cnx.vreg.schema:
sys.stderr.write('entities table references unknown type %s\n' %
etype)
if fix:
cnx.system_sql("DELETE FROM entities WHERE type = %(type)s",
{'type': etype})
continue
table = SQL_PREFIX + etype
for rel, default in ( ('creation_date', datetime.now()),
('modification_date', datetime.now()), ):
column = SQL_PREFIX + rel
cursor = cnx.system_sql("SELECT %s FROM %s WHERE %s is NULL"
% (eidcolumn, table, column))
for eid, in cursor.fetchall():
sys.stderr.write(msg % (etype, eid, rel))
if fix:
cnx.system_sql("UPDATE %s SET %s=%%(v)s WHERE %s=%s ;"
% (table, column, eidcolumn, eid),
{'v': default})
notify_fixed(fix)
def check(repo, cnx, checks, reindex, fix, withpb=True):
"""check integrity of instance's repository,
using given user and password to locally connect to the repository
(no running cubicweb server needed)
"""
# yo, launch checks
if checks:
eids_cache = {}
with cnx.security_enabled(read=False, write=False): # ensure no read security
for check in checks:
check_func = globals()['check_%s' % check]
with cnx.ensure_cnx_set:
check_func(repo.schema, cnx, 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()
with cnx.ensure_cnx_set:
reindex_entities(repo.schema, cnx, withpb=withpb)
cnx.commit()