Added DB_ECHO option for SQLAlchemy echo mode

Author: Hummer12007

docs/sanic.rst

@@ -22,6 +22,7 @@ Supported configurations:
 - DB_USER
 - DB_PASSWORD
 - DB_DATABASE
+- DB_ECHO
 - DB_POOL_MIN_SIZE
 - DB_POOL_MAX_SIZE
 - DB_USE_CONNECTION_FOR_REQUEST
@@ -75,6 +76,7 @@ To integrate with Sanic, a few configurations needs to be set in
 - DB_USER: if not set, ``postgres``
 - DB_PASSWORD: if not set, empty string
 - DB_DATABASE: if not set, ``postgres``
+- DB_ECHO: if not set, ``False``
 - DB_POOL_MIN_SIZE: if not set, 5
 - DB_POOL_MAX_SIZE: if not set, 10
 

gino/ext/aiohttp.py

@@ -86,6 +86,7 @@ class Gino(_Gino):
       will replace all previous connect arguments.
     * ``pool_min_size`` - the initial number of connections of the db pool.
     * ``pool_max_size`` - the maximum number of connections in the db pool.
+    * ``echo`` - enable SQLAlchemy echo mode.
 
     If the ``db`` is set as an aiohttp middleware, then a lazy connection is
     available at ``request['connection']``. By default, a database connection
@@ -136,6 +137,7 @@ async def before_server_start(app_):
 
             await self.set_bind(
                 dsn,
+                echo=config.setdefault('echo', False),
                 min_size=config.setdefault('pool_min_size', 5),
                 max_size=config.setdefault('pool_max_size', 10),
                 loop=app_.loop,

gino/ext/quart.py

@@ -124,6 +124,7 @@ async def before_first_request():
 
             await self.set_bind(
                 dsn,
+                echo=app.config.setdefault('DB_ECHO', False),
                 min_size=app.config.setdefault('DB_POOL_MIN_SIZE', 5),
                 max_size=app.config.setdefault('DB_POOL_MAX_SIZE', 10),
                 loop=asyncio.get_event_loop(),

gino/ext/sanic.py

@@ -119,6 +119,7 @@ async def before_server_start(_, loop):
 
             await self.set_bind(
                 dsn,
+                echo=app.config.setdefault('DB_ECHO', False),
                 min_size=app.config.setdefault('DB_POOL_MIN_SIZE', 5),
                 max_size=app.config.setdefault('DB_POOL_MAX_SIZE', 10),
                 loop=loop,

gino/ext/tornado.py

@@ -63,6 +63,7 @@
 - ``'db_user'`` -- if not set, ``postgres``;
 - ``'db_password'`` -- if not set, empty string;
 - ``'db_database'`` -- if not set, ``postgres``;
+- ``'db_echo'`` -- whether to enable SQLAlchemy echo mode, defaults to False.
 - ``dsn`` -- a SQLAlchemy database URL to create the engine, its existence
   will replace all previous connect arguments.
 - ``'db_pool_min_size'`` -- number of connection the pool will be initialized
@@ -187,6 +188,7 @@ def inner(value):
 _define('db_user', 'postgres', str, group='database')
 _define('db_password', 'password', str, group='database')
 _define('db_database', 'postgres', str, group='database')
+_define('db_echo', False, bool, group='database')
 _define('db_pool_min_size', 5, int, group='database',
         callback=_assert_not_negative('db_pool_min_size'))
 _define('db_pool_max_size', 10, int, group='database',
@@ -341,6 +343,7 @@ async def late_init(self, db: Gino, *, loop=None, options=_options):
 
         await db.set_bind(
             dsn,
+            echo=options['db_echo'],
             min_size=options['db_pool_min_size'],
             max_size=options['db_pool_max_size'],
             max_inactive_connection_lifetime=(