Force PostgreSQL timestamps to UTC.

lsst · Nov 26, 2020 · 5fab3bd · 5fab3bd
1 parent 1cc2db8
commit 5fab3bd
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/python/lsst/daf/butler/registry/databases/postgresql.py b/python/lsst/daf/butler/registry/databases/postgresql.py
@@ -100,6 +100,12 @@ def transaction(self, *, interrupting: bool = False, savepoint: bool = False,
             if not self.isWriteable():
                 with closing(self._connection.connection.cursor()) as cursor:
                     cursor.execute("SET TRANSACTION READ ONLY")
+            else:
+                with closing(self._connection.connection.cursor()) as cursor:
+                    # Make timestamps UTC, because we didn't use TIMESTAMPZ for
+                    # the column type.  When we can tolerate a schema change,
+                    # we should change that type and remove this line.
+                    cursor.execute("SET TIME ZONE 0")
             yield
 
     def _lockTables(self, tables: Iterable[sqlalchemy.schema.Table] = ()) -> None: