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-rwxr-xr-xscripts/synapse_port_db25
-rw-r--r--synapse/storage/data_stores/__init__.py2
-rw-r--r--synapse/storage/engines/postgres.py17
-rw-r--r--synapse/storage/engines/sqlite.py2
4 files changed, 18 insertions, 28 deletions
diff --git a/scripts/synapse_port_db b/scripts/synapse_port_db
index cb77314f1e..a3dafaffc9 100755
--- a/scripts/synapse_port_db
+++ b/scripts/synapse_port_db
@@ -447,15 +447,6 @@ class Porter(object):
             else:
                 return
 
-    def setup_db(self, db_config: DatabaseConnectionConfig, engine):
-        db_conn = make_conn(db_config, engine)
-        prepare_database(db_conn, engine, config=None)
-
-        db_conn.commit()
-
-        return db_conn
-
-    @defer.inlineCallbacks
     def build_db_store(self, db_config: DatabaseConnectionConfig):
         """Builds and returns a database store using the provided configuration.
 
@@ -468,16 +459,14 @@ class Porter(object):
         self.progress.set_state("Preparing %s" % db_config.config["name"])
 
         engine = create_engine(db_config.config)
-        conn = self.setup_db(db_config, engine)
 
         hs = MockHomeserver(self.hs_config)
 
-        store = Store(Database(hs, db_config, engine), conn, hs)
-
-        yield store.db.runInteraction(
-            "%s_engine.check_database" % db_config.config["name"],
-            engine.check_database,
-        )
+        with make_conn(db_config, engine) as db_conn:
+            engine.check_database(db_conn)
+            prepare_database(db_conn, engine, config=None)
+            store = Store(Database(hs, db_config, engine), db_conn, hs)
+            db_conn.commit()
 
         return store
 
@@ -502,7 +491,7 @@ class Porter(object):
     @defer.inlineCallbacks
     def run(self):
         try:
-            self.sqlite_store = yield self.build_db_store(
+            self.sqlite_store = self.build_db_store(
                 DatabaseConnectionConfig("master-sqlite", self.sqlite_config)
             )
 
@@ -518,7 +507,7 @@ class Porter(object):
                 )
                 defer.returnValue(None)
 
-            self.postgres_store = yield self.build_db_store(
+            self.postgres_store = self.build_db_store(
                 self.hs_config.get_single_database()
             )
 
diff --git a/synapse/storage/data_stores/__init__.py b/synapse/storage/data_stores/__init__.py
index 092e803799..e1d03429ca 100644
--- a/synapse/storage/data_stores/__init__.py
+++ b/synapse/storage/data_stores/__init__.py
@@ -47,7 +47,7 @@ class DataStores(object):
             with make_conn(database_config, engine) as db_conn:
                 logger.info("Preparing database %r...", db_name)
 
-                engine.check_database(db_conn.cursor())
+                engine.check_database(db_conn)
                 prepare_database(
                     db_conn, engine, hs.config, data_stores=database_config.data_stores,
                 )
diff --git a/synapse/storage/engines/postgres.py b/synapse/storage/engines/postgres.py
index b7c4eda338..ba19785fd7 100644
--- a/synapse/storage/engines/postgres.py
+++ b/synapse/storage/engines/postgres.py
@@ -32,14 +32,15 @@ class PostgresEngine(object):
         self.synchronous_commit = database_config.get("synchronous_commit", True)
         self._version = None  # unknown as yet
 
-    def check_database(self, txn):
-        txn.execute("SHOW SERVER_ENCODING")
-        rows = txn.fetchall()
-        if rows and rows[0][0] != "UTF8":
-            raise IncorrectDatabaseSetup(
-                "Database has incorrect encoding: '%s' instead of 'UTF8'\n"
-                "See docs/postgres.rst for more information." % (rows[0][0],)
-            )
+    def check_database(self, db_conn):
+        with db_conn.cursor() as txn:
+            txn.execute("SHOW SERVER_ENCODING")
+            rows = txn.fetchall()
+            if rows and rows[0][0] != "UTF8":
+                raise IncorrectDatabaseSetup(
+                    "Database has incorrect encoding: '%s' instead of 'UTF8'\n"
+                    "See docs/postgres.rst for more information." % (rows[0][0],)
+                )
 
     def convert_param_style(self, sql):
         return sql.replace("?", "%s")
diff --git a/synapse/storage/engines/sqlite.py b/synapse/storage/engines/sqlite.py
index df039a072d..3b3c13360b 100644
--- a/synapse/storage/engines/sqlite.py
+++ b/synapse/storage/engines/sqlite.py
@@ -53,7 +53,7 @@ class Sqlite3Engine(object):
         """
         return False
 
-    def check_database(self, txn):
+    def check_database(self, db_conn):
         pass
 
     def convert_param_style(self, sql):