def discover_toast(self):
p_cur=self._get_p_cursor()
if not p_cur:
logger.error("Returning from TN.discover_toast No p_cur obtained")
return False
try:
p_cur.execute("""SELECT r.reltoastrelid,t.relname
FROM pg_class r
INNER JOIN pg_class t ON r.reltoastrelid=t.oid
WHERE r.relkind='r'
AND t.relkind='t'
AND r.oid={0}""".format(self.db_fields['obj_oid']))
except Exception as e:
logger.error("Canot execute toast discovery query on Prod: {0}".format(e.pgerror))
p_cur.close()
return False
prod_ttbl=p_cur.fetchone()
p_cur.close()
cur=self._get_cursor()
if not cur:
logger.error("Returning from TN.discover_toast No cur obtained")
return False
try:
cur.execute("SELECT obj_oid,ttbl_name,id FROM table_toast_name WHERE tn_id={0} AND alive".format(self.id))
except Exception as e:
logger.error("Canot execute toast discovery query on Local: {0}".format(e.pgerror))
cur.close()
return False
local_ttbl=cur.fetchone()
cur.close()
if local_ttbl and prod_ttbl:
if not (local_ttbl[0] == prod_ttbl[0] and local_ttbl[1] == prod_ttbl[1]):
logger.info("Retired TOAST table {0} for table {1}".format(local_ttbl[1],self.db_fields['tbl_name']))
old_ttbl=TableToastName(self.db_conn,self.prod_conn,local_ttbl[2])
if not old_ttbl.retire():
logger.error("TN.discover_toast Cannot retire old to create new")
logger.info("Create new TOAST table {0} in table {1}".format(prod_ttbl[1],self.db_fields['tbl_name']))
new_ttbl=TableToastName(self.db_conn,self.prod_conn)
new_ttbl.set_fields(tn_id=self.id,obj_oid=prod_ttbl[0],ttbl_name=prod_ttbl[1])
if not new_ttbl._create():
logger.error("TN.discover_toast Cannot create new after retire old")
self.toast_id=local_ttbl[2]
if not new_ttbl.discover_index():
logger.error("TTN.discover_toast False from discover_index for new after retire")
elif local_ttbl and not prod_ttbl:
self.toast_id=None
logger.info("Retired TOAST table {0} for table {1}".format(local_ttbl[1],self.db_fields['tbl_name']))
old_ttbl=TableToastName(self.db_conn,self.prod_conn,local_ttbl[2])
if not old_ttbl.retire():
logger.error("TN.discover_toast Cannot retire old")
elif not local_ttbl and prod_ttbl:
logger.info("Create new TOAST table {0} in table {1}".format(prod_ttbl[1],self.db_fields['tbl_name']))
new_ttbl=TableToastName(self.db_conn,self.prod_conn)
new_ttbl.set_fields(tn_id=self.id,obj_oid=prod_ttbl[0],ttbl_name=prod_ttbl[1])
if not new_ttbl._create():
logger.error("TN.discover_toast Cannot create new")
self.toast_id=new_ttbl.get_id()
if not new_ttbl.discover_index():
logger.error("TTN.discover_toast False from discover_index for new")
return True
def discover_toast(self,prod_cursor):
self.cursor.execute("SELECT obj_oid,ttbl_name,id FROM table_toast_name WHERE tn_id={0} AND alive".format(self.id))
local_ttbl=self.cursor.fetchone()
try:
prod_cursor.execute("""SELECT r.reltoastrelid,t.relname
FROM pg_class r
INNER JOIN pg_class t ON r.reltoastrelid=t.oid
WHERE r.relkind='r'
AND t.relkind='t'
AND r.oid={0}""".format(self.db_fields['obj_oid']))
except Exception as e:
logger.error("Cannot execute toast table discovery query: {0},{1}".format(e.pgcode,e.pgerror))
return
prod_ttbl=prod_cursor.fetchone()
if local_ttbl and prod_ttbl:
if not (local_ttbl[0] == prod_ttbl[0] and local_ttbl[1] == prod_ttbl[1]):
logger.info("Retired TOAST table {0} for table {1}".format(local_ttbl[1],self.db_fields['tbl_name']))
old_ttbl=TableToastName(local_ttbl[2])
old_ttbl.retire()
logger.info("Create new TOAST table {0} in table {1}".format(prod_ttbl[1],self.db_fields['tbl_name']))
new_ttbl=TableToastName()
new_ttbl.set_fields(tn_id=self.id,obj_oid=prod_ttbl[0],ttbl_name=prod_ttbl[1])
new_ttbl.create()
self.toast_id=local_ttbl[2]
new_ttbl.truncate()
elif local_ttbl and not prod_ttbl:
self.toast_id=None
logger.info("Retired TOAST table {0} for table {1}".format(local_ttbl[1],self.db_fields['tbl_name']))
old_ttbl=TableToastName(local_ttbl[2])
old_ttbl.retire()
elif not local_ttbl and prod_ttbl:
logger.info("Create new TOAST table {0} in table {1}".format(prod_ttbl[1],self.db_fields['tbl_name']))
new_ttbl=TableToastName()
new_ttbl.set_fields(tn_id=self.id,obj_oid=prod_ttbl[0],ttbl_name=prod_ttbl[1])
new_ttbl.create()
self.toast_id=new_ttbl.get_id()
new_ttbl.truncate()
