async_graphql_actix_web/
handler.rs

1use std::time::Duration;
2
3use actix_http::StatusCode;
4use actix_web::{Handler, HttpRequest, HttpResponse, Responder};
5use async_graphql::{
6    Executor,
7    http::{create_multipart_mixed_stream, is_accept_multipart_mixed},
8};
9use futures_util::{FutureExt, StreamExt, future::LocalBoxFuture};
10
11use crate::{GraphQLRequest, GraphQLResponse};
12
13/// A GraphQL handler.
14#[derive(Clone)]
15pub struct GraphQL<E> {
16    executor: E,
17}
18
19impl<E> GraphQL<E> {
20    /// Create a GraphQL handler.
21    pub fn new(executor: E) -> Self {
22        Self { executor }
23    }
24}
25
26impl<E: Executor> Handler<(HttpRequest, GraphQLRequest)> for GraphQL<E> {
27    type Output = HttpResponse;
28    type Future = LocalBoxFuture<'static, Self::Output>;
29
30    fn call(&self, (http_req, graphql_req): (HttpRequest, GraphQLRequest)) -> Self::Future {
31        let executor = self.executor.clone();
32        async move {
33            let is_accept_multipart_mixed = http_req
34                .headers()
35                .get("accept")
36                .and_then(|value| value.to_str().ok())
37                .map(is_accept_multipart_mixed)
38                .unwrap_or_default();
39
40            if is_accept_multipart_mixed {
41                let stream = executor.execute_stream(graphql_req.0, None);
42                HttpResponse::build(StatusCode::OK)
43                    .insert_header(("content-type", "multipart/mixed; boundary=graphql"))
44                    .streaming(
45                        create_multipart_mixed_stream(stream, Duration::from_secs(30))
46                            .map(Ok::<_, actix_web::Error>),
47                    )
48            } else {
49                GraphQLResponse(executor.execute(graphql_req.into_inner()).await.into())
50                    .respond_to(&http_req)
51            }
52        }
53        .boxed_local()
54    }
55}
async_graphql_actix_web/handler.rs

async_graphql_actix_web/
handler.rs
