Questions about Starlette (a lightweight python ASGI framework/toolkit).
Starlette is a lightweight ASGI framework/toolkit, which is ideal for building high performance asyncio services.
Questions tagged [starlette]
259 questions
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1 answer
FastApi TestClient WebSockets | How to test an FastApi app which uses threads and processes properly?
I would like to write tests for my FastApi WebSocket application, but a single test runs forever and doesn't stop, which prevents the next test to start.
I invoke a thread during the FastApi app "startup" which itself spawns processes. I feel like…
MJey
- 345
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0 answers
python sse-starlette generator stuck after closing the sse client
I am trying to use SSE as fastApi endpoint. And the event generator never exits and getting stuck.
Machine details:
Ubuntu 20
Python 3.8
Server:
import asyncio
import uvicorn
from fastapi import FastAPI, Request
from sse_starlette.sse import…
Mark
- 11
- 2
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1 answer
How to decode the file uploaded in postman using python starlette
I have uploaded a .mp4 file in postman and now i need to read the file contents into a variable in python
This is my postman upload
This is my python file where i my request will be catched in this function
now how will be decode the file uploaded…
SPMK
- 19
- 5
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0 answers
How do you access the response headers in a Starlette app?
Is there a way to access the headers that will be included in the response without writing a custom middleware to intercept them? For example, how would I get the expiration date/time of a cookie set by the SessionMiddleware, or its last access? I…
ZSwat
- 85
- 6
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1 answer
Is it possible to use starlette framwork to interact with elasticsearch?
I am facing difficulty in accessing the elasticsearch index using starlette framework
My main.py is
from urllib.request import Request
from webbrowser import get
from elasticsearch import Elasticsearch, helpers
from starlette.applications import…
SPMK
- 19
- 5
1
vote
0 answers
`await call_next(request)` gets stuck indefinitely on larger payloads
I got this snippet from here.
When implemented, response = await call_next(request) gets stuck indefinitely when the JSON payload is too large.
What could be the reason? Is it the right way to modify the body of JSON in FastAPI?
class…
Irfanuddin
- 2,295
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1 answer
How to add context to HTMLResponse?
How to add context to HTMLResponse as you can do with TemplateResponse to insert content into the HTML site? Example with TemplateResponse:
return templates.TemplateResponse('index.html', context={'request': request, "Variable1": V1, "Variable2":…
BluebayX
- 15
- 3
1
vote
0 answers
Access fastapi.Request object without router method
I have a FastAPI app and on app-startup, I create a State for it like this:
app.state.player["id"] = Player()
And now I want to access this player state whenever I need it. And the only way of accessing this state is through fastapi.Request object…
Eziz Durdyyev
- 1,110
- 2
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- 34
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1 answer
FastAPI: How to upload a file without using multipart/form-data request?
I have a FastAPI endpoint for handling file uploads that looks something like this:
@app.post('/upload')
async def accept_some_file(f: UploadFile):
content = await f.read()
# ... do stuff with content and generate a response
but this…
kingkupps
- 3,284
- 2
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1 answer
How to update response schema in swagger for all endpoints after modifying response at middleware level in a FastAPI Application?
So, I have created a Custom Middleware for my big FastAPI Application, which alters responses from all of my endpoints this way:
Response model is different for all APIs. However, my MDW adds meta data to all of these responses, in an uniform…
raghavsikaria
- 867
- 17
- 30
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1 answer
How to modify the content-length post modification of response in a middleware in FastAPI?
Example Code:
# Here is a minimal reproducible example
import json
from starlette.datastructures import MutableHeaders
from starlette.types import ASGIApp, Receive, Scope, Send, Message
import datetime
import socket
import uvicorn
from fastapi…
raghavsikaria
- 867
- 17
- 30
1
vote
0 answers
understanding Starlette authentication
I'm trying to build a login page for a web application.
As documented here: https://www.starlette.io/authentication/ I have the following:
class BasicAuthBackend(AuthenticationBackend):
async def authenticate(self, conn):
if…
Yonatan
- 13
- 4
1
vote
1 answer
In FastAPI, how can I expand a model's output with a reverse URL lookup based on a field?
Let's assume I have a simple file storage in the database. The SQLAlchemy model looks like this:
class Blob(Base):
id = Column(Integer, primary_key=True)
blob = deferred(Column(LargeBinary().with_variant(LONGBLOB, "mysql")))
The respective…
Nikolai Prokoschenko
- 8,465
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- 97
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1 answer
How to add metrics to external services using aioprometheus and FastAPI?
I'm trying to add metrics to external services with aioprometheus in an app built with FastAPI. Here is a simplified example of what I'm trying to achieve.
Say I have a wrapper App class as such:
from aioprometheus import Registry, Counter,…
Isaac
- 273
- 3
- 19
1
vote
0 answers
Starlette - how to log in user in a view
I am making a Facebook login feature in my FastAPI/Starlette app, and have a problem with it.
I see starlette provides some documentation on how to make authentication like:
https://www.starlette.io/authentication/
, but with SSO, I would expect to…
tikej
- 179
- 1
- 16