Rename internal _transport variable

"transport" is a keyword that is used to define SSL connection in
Tarantool Enterprise 2.10 and newer. It would be convenient to use
`self._transport` to store user input `transport` variable, but this
name is already used to store connection transport. This patch renames
the instance variable.

Part of igorcoding#22

asynctnt/connection.py

@@ -31,7 +31,7 @@ class Connection(Api):
         '_fetch_schema', '_auto_refetch_schema', '_initial_read_buffer_size',
         '_encoding', '_connect_timeout', '_reconnect_timeout',
         '_request_timeout', '_ping_timeout', '_loop', '_state', '_state_prev',
-        '_transport', '_protocol',
+        '_connection_transport', '_protocol',
         '_disconnect_waiter', '_reconnect_task',
         '_connect_lock', '_disconnect_lock',
         '_ping_task', '__create_task'
@@ -138,7 +138,7 @@ def __init__(self, *,
         self._loop = None
         self.__create_task = None
 
-        self._transport = None
+        self._connection_transport = None
         self._protocol: Optional[protocol.Protocol] = None
 
         self._state = ConnectionState.DISCONNECTED
@@ -157,9 +157,9 @@ def _set_state(self, new_state: ConnectionState):
             self._state = new_state
 
     def connection_lost(self, exc):
-        if self._transport:
-            self._transport.close()
-        self._transport = None
+        if self._connection_transport:
+            self._connection_transport.close()
+        self._connection_transport = None
 
         if self._disconnect_waiter:
             # disconnect() call happened
@@ -294,7 +294,7 @@ async def full_connect():
                     logger.info('%s Connected successfully', self.fingerprint)
                     self._set_state(ConnectionState.CONNECTED)
 
-                    self._transport = tr
+                    self._connection_transport = tr
                     self._protocol = pr
                     self._set_db(self._protocol.get_common_db())
                     self._reconnect_task = None
@@ -379,17 +379,17 @@ async def disconnect(self):
                 self._ping_task = None
 
             self._clear_db()
-            if self._transport:
+            if self._connection_transport:
                 self._disconnect_waiter = _create_future(self._loop)
-                self._transport.close()
-                self._transport = None
+                self._connection_transport.close()
+                self._connection_transport = None
                 self._protocol = None
 
                 await self._disconnect_waiter
                 self._disconnect_waiter = None
                 self._set_state(ConnectionState.DISCONNECTED)
             else:
-                self._transport = None
+                self._connection_transport = None
                 self._protocol = None
                 self._disconnect_waiter = None
                 self._set_state(ConnectionState.DISCONNECTED)
@@ -414,10 +414,10 @@ def close(self):
             self._ping_task.cancel()
             self._ping_task = None
 
-        if self._transport:
-            self._transport.close()
+        if self._connection_transport:
+            self._connection_transport.close()
 
-        self._transport = None
+        self._connection_transport = None
         self._protocol = None
         self._disconnect_waiter = None
         self._clear_db()

asynctnt/instance.py

@@ -35,19 +35,19 @@ def __init__(self, tnt, on_exit):
         super().__init__()
         self._tnt = tnt
         self._on_exit = on_exit
-        self._transport = None
+        self._connection_transport = None
 
     @property
     def logger(self):
         return self._tnt.logger
 
     @property
     def pid(self):
-        return self._transport.get_pid() if self._transport else None
+        return self._connection_transport.get_pid() if self._connection_transport else None
 
     def connection_made(self, transport):
         self.logger.info('Process started')
-        self._transport = transport
+        self._connection_transport = transport
 
     def pipe_data_received(self, fd, data):
         if not data:
@@ -62,28 +62,28 @@ def pipe_data_received(self, fd, data):
                 self.logger.info('=> %s', line)
 
     def process_exited(self):
-        return_code = self._transport.get_returncode()
+        return_code = self._connection_transport.get_returncode()
         if callable(self._on_exit):
             self._on_exit(return_code)
 
     @property
     def returncode(self):
-        return self._transport.get_returncode()
+        return self._connection_transport.get_returncode()
 
     async def wait(self):
         """Wait until the process exit and return the process return code.
 
         This method is a coroutine."""
-        return await self._transport._wait()
+        return await self._connection_transport._wait()
 
     def send_signal(self, signal):
-        self._transport.send_signal(signal)
+        self._connection_transport.send_signal(signal)
 
     def terminate(self):
-        self._transport.terminate()
+        self._connection_transport.terminate()
 
     def kill(self):
-        self._transport.kill()
+        self._connection_transport.kill()
 
 
 class TarantoolInstance(metaclass=abc.ABCMeta):
@@ -618,7 +618,7 @@ def __init__(self, **kwargs):
         self._loop = get_running_loop(kwargs.pop('loop', None))
 
         self._is_stopping = False
-        self._transport = None
+        self._connection_transport = None
         self._protocol = None
         self._last_return_code = None
         self._stop_event = asyncio.Event()
@@ -674,7 +674,7 @@ async def start(self, *, wait=True, recreate=True):
             args = [initlua_path]
         else:
             args = self._command_args
-        self._transport, self._protocol = await self._loop.subprocess_exec(
+        self._connection_transport, self._protocol = await self._loop.subprocess_exec(
             factory,
             self._command_to_run, *args,
             stdin=None,
@@ -739,9 +739,9 @@ def cleanup(self):
         self._logger.info('Finished with return code %d', return_code)
 
         self._is_stopping = False
-        if self._transport:
-            self._transport.close()
-        self._transport = None
+        if self._connection_transport:
+            self._connection_transport.close()
+        self._connection_transport = None
         self._protocol = None
         self._stop_event.clear()
 

tests/test_connect.py

@@ -38,7 +38,7 @@ async def test__connect(self):
         c = await conn.connect()
         self.assertEqual(conn.loop, self.loop)
         self.assertEqual(c, conn)
-        self.assertIsNotNone(conn._transport)
+        self.assertIsNotNone(conn._connection_transport)
         self.assertIsNotNone(conn._protocol)
         self.assertTrue(conn.is_connected)
         self.assertTrue(conn.is_fully_connected)
@@ -64,7 +64,7 @@ async def test__connect_direct(self):
         self.assertEqual(conn.loop, self.loop)
         self.assertIsNone(conn.initial_read_buffer_size)
 
-        self.assertIsNotNone(conn._transport)
+        self.assertIsNotNone(conn._connection_transport)
         self.assertIsNotNone(conn._protocol)
         self.assertTrue(conn.is_connected)
         self.assertTrue(conn.is_fully_connected)
@@ -100,7 +100,7 @@ async def test__connect_unix(self):
             self.assertEqual(conn.loop, self.loop)
             self.assertIsNone(conn.initial_read_buffer_size)
 
-            self.assertIsNotNone(conn._transport)
+            self.assertIsNotNone(conn._connection_transport)
             self.assertIsNotNone(conn._protocol)
             self.assertTrue(conn.is_connected)
             self.assertTrue(conn.is_fully_connected)
@@ -119,7 +119,7 @@ async def test__connect_contextmanager(self):
         self.assertEqual(conn.state, ConnectionState.DISCONNECTED)
 
         async with conn:
-            self.assertIsNotNone(conn._transport)
+            self.assertIsNotNone(conn._connection_transport)
             self.assertIsNotNone(conn._protocol)
             self.assertTrue(conn.is_connected)
             self.assertTrue(conn.is_fully_connected)
@@ -163,7 +163,7 @@ async def test__connect_no_schema(self):
                                    fetch_schema=False,
                                    auto_refetch_schema=False)
         async with conn:
-            self.assertIsNotNone(conn._transport)
+            self.assertIsNotNone(conn._connection_transport)
             self.assertIsNotNone(conn._protocol)
             self.assertTrue(conn.is_connected)
             self.assertTrue(conn.is_fully_connected)
@@ -176,7 +176,7 @@ async def test__connect_auth(self):
                                    username='t1', password='t1',
                                    reconnect_timeout=0)
         async with conn:
-            self.assertIsNotNone(conn._transport)
+            self.assertIsNotNone(conn._connection_transport)
             self.assertIsNotNone(conn._protocol)
             self.assertTrue(conn.is_connected)
             self.assertTrue(conn.is_fully_connected)
@@ -193,7 +193,7 @@ async def test__connect_auth_no_schema(self):
         self.assertEqual(conn.username, 't1')
         self.assertEqual(conn.password, 't1')
         async with conn:
-            self.assertIsNotNone(conn._transport)
+            self.assertIsNotNone(conn._connection_transport)
             self.assertIsNotNone(conn._protocol)
             self.assertTrue(conn.is_connected)
             self.assertTrue(conn.is_fully_connected)