html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,issue,performed_via_github_app
https://github.com/simonw/datasette/issues/2168#issuecomment-1712897194,https://api.github.com/repos/simonw/datasette/issues/2168,1712897194,IC_kwDOBm6k_c5mGLyq,9599,2023-09-10T17:54:07Z,2023-09-10T17:54:07Z,OWNER,"This looks relevant:

https://pluggy.readthedocs.io/en/stable/#wrappers

> A *hookimpl* can be marked with the `""wrapper""` option, which indicates that the function will be called to *wrap* (or surround) all other normal *hookimpl* calls. A *hook wrapper* can thus execute some code ahead and after the execution of all corresponding non-wrappper *hookimpls*.

This could be the perfect mechanism for implementing this hook, although I still need to figure out how it interacts with streaming.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1876353656,
https://github.com/simonw/datasette/issues/2168#issuecomment-1701831013,https://api.github.com/repos/simonw/datasette/issues/2168,1701831013,IC_kwDOBm6k_c5lb-Fl,9599,2023-08-31T21:51:12Z,2023-08-31T21:52:15Z,OWNER,"Need to make sure the design of this takes streaming responses into account. Those could be pretty tricky here.

I nice thing about `asgi_wrapper()` is that it handles those already.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1876353656,
https://github.com/simonw/datasette/issues/2168#issuecomment-1701830241,https://api.github.com/repos/simonw/datasette/issues/2168,1701830241,IC_kwDOBm6k_c5lb95h,9599,2023-08-31T21:50:18Z,2023-08-31T21:50:18Z,OWNER,"The hook could be called `register_middleware()` and could work like `register_routes()` and `register_commands()`:

```python
@hookspec
def register_middleware(datasette):
    """"""Register middleware: returns a list of async def middleware functions""""""

```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1876353656,
https://github.com/simonw/datasette/issues/2168#issuecomment-1701828197,https://api.github.com/repos/simonw/datasette/issues/2168,1701828197,IC_kwDOBm6k_c5lb9Zl,9599,2023-08-31T21:48:00Z,2023-08-31T21:48:57Z,OWNER,"A pattern like this could be interesting:
```python
async def my_middleware(datasette, request, get_response):
    # Mess with request here if neccessary
    response = await get_response(request)
    # mess with response
    return response
```
The Django pattern is more complicated but does have that mechanism for running one-time configuration prior to defining the `middleware()` function, which is neat.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1876353656,
https://github.com/simonw/datasette/issues/2168#issuecomment-1701826521,https://api.github.com/repos/simonw/datasette/issues/2168,1701826521,IC_kwDOBm6k_c5lb8_Z,9599,2023-08-31T21:46:13Z,2023-08-31T21:46:13Z,OWNER,"This could even be a pair of hooks - `process_request()` and `process_response()`.

Or could take a leaf from Django, which redesigned middleware to use this pattern instead:

```python
def simple_middleware(get_response):
    # One-time configuration and initialization.
    def middleware(request):
        # Code to be executed for each request before
        # the view (and later middleware) are called.
        response = get_response(request)
        # Code to be executed for each request/response after
        # the view is called.
        return response
    return middleware
```
Or even borrow an idea from `pytest` where fixtures can `yield` in the middle, like this:
```python
@pytest.fixture
def sending_user(mail_admin):
    user = mail_admin.create_user()
    yield user
    mail_admin.delete_user(user)
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1876353656,
https://github.com/simonw/datasette/issues/2168#issuecomment-1701823609,https://api.github.com/repos/simonw/datasette/issues/2168,1701823609,IC_kwDOBm6k_c5lb8R5,9599,2023-08-31T21:43:06Z,2023-08-31T21:44:13Z,OWNER,"Not sure what to call this. Maybe `app_wrapper()`?

Or perhaps it's simpler than that, something like this:

```python
@hookspec
def process_response(datasette, request, response):
    """"""Last chance to modify the response before it is returned to the client""""""
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1876353656,