Access HTTP request headers within Component

[aswincandra]

In my specific custom component, I want to get the HTTP request header , in this case is the bearer token authentication, a.k.a. x-api-key. Is that possible? I need to get that to perform several operations using that API key values.

[dosubot[bot]]

Hello @aswincandra! I'm here to help you with any bugs, questions, or contribution assistance you may need. Let's tackle this together!

Yes, it is possible to access HTTP request headers, including the x-api-key, within a custom component in Langflow. You can retrieve the headers from the request object. If you are handling HTTP requests in your component, you can access the headers like this:

from fastapi import Request

async def your_function(request: Request):
    api_key = request.headers.get("x-api-key")
    if api_key:
        # Perform operations using the API key
        pass
    else:
        # Handle the case where the API key is missing
        pass

This code snippet demonstrates how to access the x-api-key from the request headers and use it for further operations. Make sure your component is set up to receive the Request object.

To continue talking to Dosu, mention @dosu.

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[aswincandra]

@dosu I don't handle http request in my component, it handled by Langflow's backend already under the hood

[dosubot[bot]]

In Langflow, you can access HTTP request headers within custom components by utilizing the APIRequestComponent. This component allows you to specify headers as a dictionary, which can be used when making HTTP requests. Here's how you can configure it:

1. Use the NestedDictInput for headers in your component configuration:

NestedDictInput(
    name="headers",
    display_name="Headers",
    info="The headers to send with the request as a dictionary. This is populated when using the CURL field.",
    input_types=["Data"],
)

2. When making a request, you can pass the headers dictionary, which includes your x-api-key or any other headers you need:

async def make_request(
    self,
    client: httpx.AsyncClient,
    method: str,
    url: str,
    headers: dict | None = None,
    body: dict | None = None,
    timeout: int = 5,
) -> Data:
    response = await client.request(method, url, headers=headers, json=body, timeout=timeout)
    # Handle the response

This setup allows you to include the x-api-key in the headers when making requests from your component ^[1].

To continue talking to Dosu, mention @dosu.

---

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