143 lines
4.6 KiB
Rust
143 lines
4.6 KiB
Rust
//! Async-graphql integration with Tide
|
|
|
|
#![warn(missing_docs)]
|
|
#![allow(clippy::type_complexity)]
|
|
#![allow(clippy::needless_doctest_main)]
|
|
#![forbid(unsafe_code)]
|
|
|
|
use async_graphql::http::MultipartOptions;
|
|
use async_graphql::{resolver_utils::ObjectType, Schema, SubscriptionType};
|
|
use async_trait::async_trait;
|
|
use std::str::FromStr;
|
|
use tide::{
|
|
http::{headers, Method},
|
|
Body, Request, Response, StatusCode,
|
|
};
|
|
|
|
/// GraphQL request handler
|
|
///
|
|
///
|
|
/// # Examples
|
|
/// *[Full Example](<https://github.com/async-graphql/examples/blob/master/tide/starwars/src/main.rs>)*
|
|
///
|
|
/// ```no_run
|
|
/// use async_graphql::*;
|
|
/// use async_std::task;
|
|
/// use tide::Request;
|
|
///
|
|
/// struct QueryRoot;
|
|
/// #[Object]
|
|
/// impl QueryRoot {
|
|
/// #[field(desc = "Returns the sum of a and b")]
|
|
/// async fn add(&self, a: i32, b: i32) -> i32 {
|
|
/// a + b
|
|
/// }
|
|
/// }
|
|
///
|
|
/// fn main() -> std::result::Result<(), Box<dyn std::error::Error + Send + Sync>> {
|
|
/// task::block_on(async {
|
|
/// let mut app = tide::new();
|
|
/// app.at("/").post(|req: Request<()>| async move {
|
|
/// let schema = Schema::build(QueryRoot, EmptyMutation, EmptySubscription).finish();
|
|
/// async_graphql_tide::graphql(req, schema, |query_builder| query_builder).await
|
|
/// });
|
|
/// app.listen("0.0.0.0:8000").await?;
|
|
///
|
|
/// Ok(())
|
|
/// })
|
|
/// }
|
|
/// ```
|
|
pub async fn graphql<Query, Mutation, Subscription, TideState, F>(
|
|
req: Request<TideState>,
|
|
schema: Schema<Query, Mutation, Subscription>,
|
|
configuration: F,
|
|
) -> tide::Result<Response>
|
|
where
|
|
Query: ObjectType + Send + Sync + 'static,
|
|
Mutation: ObjectType + Send + Sync + 'static,
|
|
Subscription: SubscriptionType + Send + Sync + 'static,
|
|
TideState: Clone + Send + Sync + 'static,
|
|
F: FnOnce(async_graphql::Request) -> async_graphql::Request + Send,
|
|
{
|
|
graphql_opts(req, schema, configuration, Default::default()).await
|
|
}
|
|
|
|
/// Similar to graphql, but you can set the options `async_graphql::MultipartOptions`.
|
|
pub async fn graphql_opts<Query, Mutation, Subscription, TideState, F>(
|
|
req: Request<TideState>,
|
|
schema: Schema<Query, Mutation, Subscription>,
|
|
configuration: F,
|
|
opts: MultipartOptions,
|
|
) -> tide::Result<Response>
|
|
where
|
|
Query: ObjectType + Send + Sync + 'static,
|
|
Mutation: ObjectType + Send + Sync + 'static,
|
|
Subscription: SubscriptionType + Send + Sync + 'static,
|
|
TideState: Clone + Send + Sync + 'static,
|
|
F: FnOnce(async_graphql::Request) -> async_graphql::Request + Send,
|
|
{
|
|
let request = req.body_graphql_opts(opts).await?;
|
|
Response::new(StatusCode::Ok).body_graphql(schema.execute(configuration(request)).await)
|
|
}
|
|
|
|
/// Tide request extension
|
|
///
|
|
#[async_trait]
|
|
pub trait RequestExt<State: Clone + Send + Sync + 'static>: Sized {
|
|
/// Convert a query to `async_graphql::Request`.
|
|
async fn body_graphql(self) -> tide::Result<async_graphql::Request> {
|
|
self.body_graphql_opts(Default::default()).await
|
|
}
|
|
|
|
/// Similar to `RequestExt::body_graphql`, but you can set the options `async_graphql::MultipartOptions`.
|
|
async fn body_graphql_opts(
|
|
self,
|
|
opts: MultipartOptions,
|
|
) -> tide::Result<async_graphql::Request>;
|
|
}
|
|
|
|
#[async_trait]
|
|
impl<State: Clone + Send + Sync + 'static> RequestExt<State> for Request<State> {
|
|
async fn body_graphql_opts(
|
|
self,
|
|
opts: MultipartOptions,
|
|
) -> tide::Result<async_graphql::Request> {
|
|
if self.method() == Method::Get {
|
|
Ok(self.query::<async_graphql::Request>()?)
|
|
} else {
|
|
let content_type = self
|
|
.header(&headers::CONTENT_TYPE)
|
|
.and_then(|values| values.get(0).map(|value| value.to_string()));
|
|
async_graphql::http::receive_body(content_type, self, opts)
|
|
.await
|
|
.map_err(|err| tide::Error::new(StatusCode::BadRequest, err))
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Tide response extension
|
|
///
|
|
pub trait ResponseExt: Sized {
|
|
/// Set body as the result of a GraphQL query.
|
|
fn body_graphql(self, res: async_graphql::Response) -> tide::Result<Self>;
|
|
}
|
|
|
|
impl ResponseExt for Response {
|
|
fn body_graphql(self, res: async_graphql::Response) -> tide::Result<Self> {
|
|
let mut resp = add_cache_control(self, &res);
|
|
resp.set_body(Body::from_json(&res)?);
|
|
Ok(resp)
|
|
}
|
|
}
|
|
|
|
fn add_cache_control(mut http_resp: Response, resp: &async_graphql::Response) -> Response {
|
|
if resp.is_ok() {
|
|
if let Some(cache_control) = resp.cache_control.value() {
|
|
if let Ok(header) = tide::http::headers::HeaderName::from_str("cache-control") {
|
|
http_resp.insert_header(header, cache_control);
|
|
}
|
|
}
|
|
}
|
|
http_resp
|
|
}
|