def discover_schemas(self):
if not self.get_self_db_conn():
return
cur=self.prod_conn.cursor()
try:
cur.execute("SELECT oid,nspname FROM pg_namespace WHERE nspname NOT IN ('pg_catalog', 'information_schema') AND nspname !~ '^pg_toast' AND nspname !~ '^pg_temp'")
except Exception as e:
logger.error("Canot get schema info for database {0}".format(self.db_fields['db_name']))
cur.close()
return
prod_schs=cur.fetchall()
cur.close()
self.cursor.execute("SELECT obj_oid,sch_name,id FROM schema_name WHERE dn_id={0} AND alive".format(self.id))
local_schs=self.cursor.fetchall()
for l_sch in local_schs:
for p_sch in prod_schs:
if l_sch[0]==p_sch[0] and l_sch[1]==p_sch[1]:
break
else:
old.sch=SchemaName(l_sch[2])
old_sch.retire()
logger.info("Retired schema {0} in database {1}".format(l_sch[1],self.db_fields['db_name']))
for p_sch in prod_schs:
for l_sch in local_schs:
if l_sch[0]==p_sch[0] and l_sch[1]==p_sch[1]:
break
else:
new_sch=SchemaName()
new_sch.set_fields(dn_id=self.id,obj_oid=p_sch[0],sch_name=p_sch[1])
new_sch.create()
new_sch.truncate()
logger.info("Create new schema {0} in database {1}".format(p_sch[1],self.db_fields['db_name']))
def discover_schemas(self):
cur=self._get_p_cursor()
if not cur:
logger.error("Return from DN discover_schemas. No p_cur obtained")
return False
try:
cur.execute("SELECT oid,nspname FROM pg_namespace WHERE nspname NOT IN ('pg_catalog', 'information_schema') AND nspname !~ '^pg_toast' AND nspname !~ '^pg_temp'")
except Exception as e:
logger.error("Canot execute schema discovery query on Prod {0}".format(e.pgerror))
cur.close()
return False
prod_schs=cur.fetchall()
cur.close()
cur=self.db_conn.cursor()
try:
cur.execute("SELECT obj_oid,sch_name,id FROM schema_name WHERE dn_id={0} AND alive".format(self.id))
except Exception as e:
logger.error("Canot execute schema discovery query on Local {0}".format(e.pgerror))
cur.close()
return False
local_schs=cur.fetchall()
cur.close()
for l_sch in local_schs:
for p_sch in prod_schs:
if l_sch[0]==p_sch[0] and l_sch[1]==p_sch[1]:
old_sch=SchemaName(self.db_conn,self.prod_conn,l_sch[2])
if not old_sch.discover_tables():
logger.error("DN.discover_schemas() False from discover_tables for old")
if not old_sch.discover_functions():
logger.error("DN.discover_schemas() False from discover_functions for old")
break
else:
old_sch=SchemaName(self.db_conn,self.prod_conn,l_sch[2])
if old_sch.retire():
logger.info("Retired schema {0} in database {1}".format(l_sch[1],self.db_fields['db_name']))
else:
logger.error("DN.discover_schemas() Cannot retire old")
for p_sch in prod_schs:
for l_sch in local_schs:
if l_sch[0]==p_sch[0] and l_sch[1]==p_sch[1]:
break
else:
new_sch=SchemaName(self.db_conn,self.prod_conn)
new_sch.set_fields(dn_id=self.id,obj_oid=p_sch[0],sch_name=p_sch[1])
if new_sch._create():
if not new_sch.discover_tables():
logger.error("DN.discover_schemas() False from discover_tables for new")
if not new_sch.discover_functions():
logger.error("DN.discover_schemas() False from discover_functions for new")
logger.info("Create new schema {0} in database {1}".format(p_sch[1],self.db_fields['db_name']))
else:
logger.error("DN.discover_schemas() Cannot create new")
return True
