Matrix-Mirrors/anonymousland-synapse
1
0
Fork 0
mirror of https://git.anonymousland.org/anonymousland/synapse.git synced 2025-05-02 10:06:05 -04:00
Code Issues Projects Releases Packages Wiki Activity

Use native UPSERTs where possible (#4306)

Browse source
This commit is contained in:
Amber Brown 2019-01-24 21:31:54 +11:00 • committed by GitHub
parent 97fd29c019
commit 58f6c48183
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
14 changed files with 238 additions and 43 deletions
Download patch file Download diff file Expand all files Collapse all files

14
synapse/storage/engines/postgres.py
View file

@ -38,6 +38,13 @@ class PostgresEngine(object):
return sql.replace("?", "%s")
def on_new_connection(self, db_conn):
# Get the version of PostgreSQL that we're using. As per the psycopg2
# docs: The number is formed by converting the major, minor, and
# revision numbers into two-decimal-digit numbers and appending them
# together. For example, version 8.1.5 will be returned as 80105
self._version = db_conn.server_version
db_conn.set_isolation_level(
self.module.extensions.ISOLATION_LEVEL_REPEATABLE_READ
)
@ -54,6 +61,13 @@ class PostgresEngine(object):
cursor.close()
@property
def can_native_upsert(self):
"""
Can we use native UPSERTs? This requires PostgreSQL 9.5+.
"""
return self._version >= 90500
def is_deadlock(self, error):
if isinstance(error, self.module.DatabaseError):
# https://www.postgresql.org/docs/current/static/errcodes-appendix.html