Solara•6mo ago

Server route

I need to somehow change the state depending on the behavior of the external service, I think I need some server route to accept the data, what is the best way to do it?

13 Replies

MaartenBreddels•6mo ago

Do you mean a FastAPI endpoint that sets the state of for instance a reactive variable? Could you share the specific use case, that might be interesting for us to hear, and also to better understand what you need.

MindsightsAI•6mo ago

@MaartenBreddels Yes that's right, I do vscode extension, the application on solara runs as an iframe in webview. I need to pass data from vscode extension(js) to reactive variable I do not want to use hard way - pass data to web view, from web view to iFrame with solara, from solara vue to Python using cv

MaartenBreddels•6mo ago

Interesting, will this be a public vscode extension? Can we assume 1 virtual kernel (so 1 connected tab)?

MindsightsAI•6mo ago

Yes for both questions, it is open source playground for HSL DSL https://hackmd.io/@hslang/hsl 1 user and 1 instance at one point in time

HackMD

Human Software Language (HSL) - HackMD

HSL introduces a new level of abstraction in programming, seamlessly merging human language with code via advanced Language Models (LLMs) and intuitive markdown syntax. This approach effortlessly transforms ideas into powerful software, eliminating complex syntax and steep learning curves. HSL streamlines development across various platforms, m...

MaartenBreddels•6mo ago

I started here, I create the following (endpoint.py):

from starlette.applications import Starlette
from starlette.requests import Request
from starlette.responses import JSONResponse
from starlette.routing import  Route

import solara.server.starlette
import solara.server.starlette
import solara.server.kernel_context



def reset(request: Request):
    # we import this late, otherwise we get circular imports
    import app
    # undocumented, *might* break in the future, but we do our best to keep it working
    # Reset the clicks for all kernels
    for kernel_id, context in solara.server.kernel_context.contexts.items():
        with context:
            print("resetting clicks for", kernel_id)
            app.clicks.value = 0
    return JSONResponse({"reset": "ok"})

routes = [
    Route("/_extra/reset", endpoint=reset),
    *solara.server.starlette.routes,
]
app = Starlette(routes=routes)

from starlette.applications import Starlette
from starlette.requests import Request
from starlette.responses import JSONResponse
from starlette.routing import  Route

import solara.server.starlette
import solara.server.starlette
import solara.server.kernel_context



def reset(request: Request):
    # we import this late, otherwise we get circular imports
    import app
    # undocumented, *might* break in the future, but we do our best to keep it working
    # Reset the clicks for all kernels
    for kernel_id, context in solara.server.kernel_context.contexts.items():
        with context:
            print("resetting clicks for", kernel_id)
            app.clicks.value = 0
    return JSONResponse({"reset": "ok"})

routes = [
    Route("/_extra/reset", endpoint=reset),
    *solara.server.starlette.routes,
]
app = Starlette(routes=routes)

And app.py:

import solara

clicks = solara.reactive(0)


@solara.component
def Page():
    color = "green"
    if clicks.value >= 5:
        color = "red"

    def increment():
        clicks.value += 1
        print("clicks", clicks)  # noqa

    solara.Button(label=f"Clicked: {clicks}", on_click=increment, color=color)

import solara

clicks = solara.reactive(0)


@solara.component
def Page():
    color = "green"
    if clicks.value >= 5:
        color = "red"

    def increment():
        clicks.value += 1
        print("clicks", clicks)  # noqa

    solara.Button(label=f"Clicked: {clicks}", on_click=increment, color=color)

Run it as SOLARA_APP=app uvicorn endpoint:app and reset the counter using curl http://127.0.0.1:8000/_extra/reset hope that helps, please share with us the end result!

MindsightsAI•6mo ago

Your example works perfectly, but why don’t mine ? In the debugger all looks perfect, variable changed, but inside UI I see old values. Also, printing a variable after changing it works somehow strangely. Source code: https://hackmd.io/@Oe9F3Sh9QpG8wuiS3v99Bg/Bys1sM_bR

MaartenBreddels•6mo ago

403 Forbidden - I don't have permission to see that hackmd

MindsightsAI•6mo ago

Access fixed

MaartenBreddels•6mo ago

Do you mean that

solara.Markdown(f"### a\n- a: {a.value}\n")
        print(a.value)
        solara.Markdown(
            f"### VS Code State\n- File Path: {vscode_state.value['file_path']}\n- Cursor Location: {str(vscode_state.value['cursor_location'])}\n- Line Text: {vscode_state.value['line_text']}"
        )

solara.Markdown(f"### a\n- a: {a.value}\n")
        print(a.value)
        solara.Markdown(
            f"### VS Code State\n- File Path: {vscode_state.value['file_path']}\n- Cursor Location: {str(vscode_state.value['cursor_location'])}\n- Line Text: {vscode_state.value['line_text']}"
        )

this piece makes it work? or it still doesn't work?

MindsightsAI•6mo ago

That one works when the ‘a’ value changes based on the chat response, but not from the endpoint. I see logs with correct values from the endpoint and can set up breakpoints to see correct values. However, at the UI, I see old values; it looks like reactivity isn’t working as expected

MaartenBreddels•6mo ago

I would go from the working example I gave, and gradually work towards your example. I also don't see why your version doesn't work. Let me know when you solve it, really curious what it is, since I also don't see it.

Jeff•6mo ago

I have been working on this using Fastapi for a project I'm building. I did get an identical result to what MindsightsAI saw if SOLARA_APP=app.py is used instead of SOLARA_APP=app.

MaartenBreddels•6mo ago

Ah, yes, make sure you run as module/package, otherwise app.py is a different namespace . This is similar to ‘python app.py’ and ‘python -m app’

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