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fix: API to create prompts based on dataset. (bionic-gpt#40)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,47 +1,117 @@ | ||
| //! Run with | ||
| //! | ||
| //! ```not_rust | ||
| //! $ cargo run -p example-http-proxy | ||
| //! ``` | ||
| //! | ||
| //! In another terminal: | ||
| //! | ||
| //! ```not_rust | ||
| //! $ curl -v -x "127.0.0.1:3000" https://tokio.rs | ||
| //! ``` | ||
| //! | ||
| //! Example is based on <https://github.com/hyperium/hyper/blob/master/examples/http_proxy.rs> | ||
|
|
||
| use axum::{ | ||
| body::Body, | ||
| extract::State, | ||
| http::Request, | ||
| http::StatusCode, | ||
| response::{IntoResponse, Response}, | ||
| Extension, RequestExt, | ||
| }; | ||
| use http::Uri; | ||
| use hyper::client::HttpConnector; | ||
|
|
||
| use db::{queries, Pool}; | ||
| use serde::{Deserialize, Serialize}; | ||
|
|
||
| type Client = hyper::client::Client<HttpConnector, Body>; | ||
|
|
||
| #[derive(Serialize, Deserialize, Debug)] | ||
| struct Message { | ||
| role: String, | ||
| content: String, | ||
| } | ||
|
|
||
| #[derive(Serialize, Deserialize, Debug)] | ||
| struct Completion { | ||
| model: String, | ||
| streaming: Option<bool>, | ||
| messages: Vec<Message>, | ||
| temperature: Option<f32>, | ||
| } | ||
|
|
||
| pub async fn handler( | ||
| Extension(pool): Extension<Pool>, | ||
| State(client): State<Client>, | ||
| mut req: Request<hyper::Body>, | ||
| mut req: Request<Body>, | ||
| ) -> Result<Response, StatusCode> { | ||
| let path = req.uri().path(); | ||
| let path_query = req | ||
| .uri() | ||
| .path_and_query() | ||
| .map(|v| v.as_str()) | ||
| .unwrap_or(path); | ||
|
|
||
| let uri = format!("http://llm-api:8080{path_query}"); | ||
|
|
||
| *req.uri_mut() = Uri::try_from(uri).unwrap(); | ||
|
|
||
| Ok(client | ||
| .request(req) | ||
| .await | ||
| .map_err(|_| StatusCode::BAD_REQUEST)? | ||
| .into_response()) | ||
| if let Some(api_key) = req.headers().get("Authorization") { | ||
| let mut db_client = pool.get().await.unwrap(); | ||
| let transaction = db_client.transaction().await.unwrap(); | ||
|
|
||
| let prompt = queries::prompts::prompt_by_api_key() | ||
| .bind(&transaction, &api_key.to_str().unwrap()) | ||
| .one() | ||
| .await | ||
| .map_err(|_| StatusCode::BAD_REQUEST)?; | ||
|
|
||
| let api_key = queries::api_keys::find_api_key() | ||
| .bind(&transaction, &api_key.to_str().unwrap()) | ||
| .one() | ||
| .await | ||
| .map_err(|_| StatusCode::UNAUTHORIZED)?; | ||
|
|
||
| let path = req.uri().path(); | ||
| let path_query = req | ||
| .uri() | ||
| .path_and_query() | ||
| .map(|v| v.as_str()) | ||
| .unwrap_or(path); | ||
|
|
||
| let base_url = prompt.base_url; | ||
| let uri = format!("{base_url}{path_query}"); | ||
|
|
||
| // If we are completions we need to add the prompt to the request | ||
| if path_query.ends_with("/completions") { | ||
| super::rls::set_row_level_security_user_id(&transaction, api_key.user_id) | ||
| .await | ||
| .map_err(|_| StatusCode::BAD_REQUEST)?; | ||
|
|
||
| let body: String = req.extract().await.map_err(|_| StatusCode::BAD_REQUEST)?; | ||
| let completion: Completion = | ||
| serde_json::from_str(&body).map_err(|_| StatusCode::BAD_REQUEST)?; | ||
|
|
||
| let generated_prompt = crate::prompt::execute_prompt( | ||
| &transaction, | ||
| prompt.id, | ||
| prompt.organisation_id, | ||
| "message.message", | ||
| ) | ||
| .await | ||
| .map_err(|_| StatusCode::BAD_REQUEST)?; | ||
|
|
||
| let completion = Completion { | ||
| messages: vec![Message { | ||
| role: "user".to_string(), | ||
| content: generated_prompt, | ||
| }], | ||
| ..completion | ||
| }; | ||
|
|
||
| let completion_json = | ||
| serde_json::to_string(&completion).map_err(|_| StatusCode::BAD_REQUEST)?; | ||
|
|
||
| // Create a new request | ||
| let req = Request::post(uri) | ||
| .header("content-type", "application/json") | ||
| .body(Body::from(completion_json)) | ||
| .map_err(|_| StatusCode::BAD_REQUEST)?; | ||
|
|
||
| Ok(client | ||
| .request(req) | ||
| .await | ||
| .map_err(|_| StatusCode::BAD_REQUEST)? | ||
| .into_response()) | ||
| } else { | ||
| // Anything that is not completions gets passed direct to the LLM API | ||
|
|
||
| *req.uri_mut() = Uri::try_from(uri).unwrap(); | ||
|
|
||
| Ok(client | ||
| .request(req) | ||
| .await | ||
| .map_err(|_| StatusCode::BAD_REQUEST)? | ||
| .into_response()) | ||
| } | ||
| } else { | ||
| Err(StatusCode::UNAUTHORIZED) | ||
| } | ||
| } |
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