diff --git a/synapse/storage/engines/postgres.py b/synapse/storage/engines/postgres.py
index 2a285e018c..c84cb452b0 100644
--- a/synapse/storage/engines/postgres.py
+++ b/synapse/storage/engines/postgres.py
@@ -32,7 +32,7 @@ class PostgresEngine(object):
self.synchronous_commit = database_config.get("synchronous_commit", True)
self._version = None # unknown as yet
- def check_database(self, db_conn):
+ def check_database(self, db_conn, allow_outdated_version: bool = False):
# 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
@@ -40,7 +40,7 @@ class PostgresEngine(object):
self._version = db_conn.server_version
# Are we on a supported PostgreSQL version?
- if self._version < 90500:
+ if not allow_outdated_version and self._version < 90500:
raise RuntimeError("Synapse requires PostgreSQL 9.5+ or above.")
with db_conn.cursor() as txn:
diff --git a/synapse/storage/engines/sqlite.py b/synapse/storage/engines/sqlite.py
index 3b3c13360b..cbf52f5191 100644
--- a/synapse/storage/engines/sqlite.py
+++ b/synapse/storage/engines/sqlite.py
@@ -53,8 +53,11 @@ class Sqlite3Engine(object):
"""
return False
- def check_database(self, db_conn):
- pass
+ def check_database(self, db_conn, allow_outdated_version: bool = False):
+ if not allow_outdated_version:
+ version = self.module.sqlite_version_info
+ if version < (3, 11, 0):
+ raise RuntimeError("Synapse requires sqlite 3.11 or above.")
def convert_param_style(self, sql):
return sql
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