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#![warn(missing_docs)]
mod subscription;
use actix_web::dev::{Payload, PayloadStream};
use actix_web::{http, web, Error, FromRequest, HttpRequest};
use async_graphql::http::StreamBody;
use async_graphql::{IntoQueryBuilder, IntoQueryBuilderOpts, ParseRequestError, QueryBuilder};
use futures::channel::mpsc;
use futures::{Future, SinkExt, StreamExt, TryFutureExt};
use std::pin::Pin;
pub use subscription::WSSubscription;
pub struct GQLRequest(QueryBuilder);
impl GQLRequest {
pub fn into_inner(self) -> QueryBuilder {
self.0
}
}
impl FromRequest for GQLRequest {
type Error = Error;
type Future = Pin<Box<dyn Future<Output = Result<GQLRequest, Error>>>>;
type Config = IntoQueryBuilderOpts;
fn from_request(req: &HttpRequest, payload: &mut Payload<PayloadStream>) -> Self::Future {
let config = req.app_data::<Self::Config>().cloned().unwrap_or_default();
let content_type = req
.headers()
.get(http::header::CONTENT_TYPE)
.and_then(|value| value.to_str().ok())
.map(|value| value.to_string());
let (mut tx, rx) = mpsc::channel(16);
let mut payload = web::Payload(payload.take());
actix_rt::spawn(async move {
while let Some(item) = payload.next().await {
if tx.send(item).await.is_err() {
return;
}
}
});
Box::pin(async move {
(content_type, StreamBody::new(rx))
.into_query_builder_opts(&config)
.map_ok(GQLRequest)
.map_err(|err| match err {
ParseRequestError::TooManyFiles | ParseRequestError::TooLarge => {
actix_web::error::ErrorPayloadTooLarge(err)
}
_ => actix_web::error::ErrorBadRequest(err),
})
.await
})
}
}