1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
class BaseMiddleware:
"""
Base class for implementing ASGI middleware.
Note that subclasses of this are not self-safe; don't store state on
the instance, as it serves multiple application instances. Instead, use
scope.
"""
def __init__(self, inner):
"""
Middleware constructor - just takes inner application.
"""
self.inner = inner
async def __call__(self, scope, receive, send):
"""
ASGI application; can insert things into the scope and run asynchronous
code.
"""
# Copy scope to stop changes going upstream
scope = dict(scope)
# Run the inner application along with the scope
return await self.inner(scope, receive, send)
|
