eb941e509a
Co-authored-by: tyranron <tyranron@gmail.com> Co-authored-by: Christian Legnitto <LegNeato@users.noreply.github.com>
504 lines
17 KiB
Rust
504 lines
17 KiB
Rust
#![doc(html_root_url = "https://docs.rs/juniper_hyper/0.2.0")]
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#[cfg(test)]
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extern crate reqwest;
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use hyper::{
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header::{self, HeaderValue},
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Body, Method, Request, Response, StatusCode,
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};
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use juniper::{
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http::GraphQLRequest as JuniperGraphQLRequest, serde::Deserialize, DefaultScalarValue,
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GraphQLType, GraphQLTypeAsync, InputValue, RootNode, ScalarValue,
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};
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use serde_json::error::Error as SerdeError;
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use std::{error::Error, fmt, string::FromUtf8Error, sync::Arc};
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use url::form_urlencoded;
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pub async fn graphql<CtxT, QueryT, MutationT, SubscrtipionT, S>(
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root_node: Arc<RootNode<'static, QueryT, MutationT, SubscrtipionT, S>>,
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context: Arc<CtxT>,
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request: Request<Body>,
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) -> Result<Response<Body>, hyper::Error>
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where
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S: ScalarValue + Send + Sync + 'static,
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CtxT: Send + Sync + 'static,
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QueryT: GraphQLType<S, Context = CtxT> + Send + Sync + 'static,
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MutationT: GraphQLType<S, Context = CtxT> + Send + Sync + 'static,
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SubscrtipionT: GraphQLType<S, Context = CtxT> + Send + Sync + 'static,
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QueryT::TypeInfo: Send + Sync,
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MutationT::TypeInfo: Send + Sync,
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SubscrtipionT::TypeInfo: Send + Sync,
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{
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match *request.method() {
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Method::GET => {
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let gql_req = parse_get_req(request);
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match gql_req {
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Ok(gql_req) => Ok(execute_request(root_node, context, gql_req).await),
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Err(err) => Ok(render_error(err)),
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}
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}
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Method::POST => {
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let gql_req = parse_post_req(request.into_body()).await;
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match gql_req {
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Ok(gql_req) => Ok(execute_request(root_node, context, gql_req).await),
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Err(err) => Ok(render_error(err)),
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}
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}
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_ => Ok(new_response(StatusCode::METHOD_NOT_ALLOWED)),
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}
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}
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pub async fn graphql_async<CtxT, QueryT, MutationT, SubscriptionT, S>(
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root_node: Arc<RootNode<'static, QueryT, MutationT, SubscriptionT, S>>,
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context: Arc<CtxT>,
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request: Request<Body>,
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) -> Result<Response<Body>, hyper::Error>
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where
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S: ScalarValue + Send + Sync + 'static,
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CtxT: Send + Sync + 'static,
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QueryT: GraphQLTypeAsync<S, Context = CtxT> + Send + Sync + 'static,
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MutationT: GraphQLTypeAsync<S, Context = CtxT> + Send + Sync + 'static,
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SubscriptionT: GraphQLType<S, Context = CtxT> + Send + Sync + 'static,
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QueryT::TypeInfo: Send + Sync,
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MutationT::TypeInfo: Send + Sync,
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SubscriptionT::TypeInfo: Send + Sync,
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{
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match *request.method() {
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Method::GET => {
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let gql_req = parse_get_req(request);
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match gql_req {
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Ok(gql_req) => Ok(execute_request_async(root_node, context, gql_req).await),
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Err(err) => Ok(render_error(err)),
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}
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}
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Method::POST => {
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let gql_req = parse_post_req(request.into_body()).await;
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match gql_req {
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Ok(gql_req) => Ok(execute_request_async(root_node, context, gql_req).await),
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Err(err) => Ok(render_error(err)),
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}
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}
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_ => Ok(new_response(StatusCode::METHOD_NOT_ALLOWED)),
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}
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}
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fn parse_get_req<S: ScalarValue>(
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req: Request<Body>,
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) -> Result<GraphQLRequest<S>, GraphQLRequestError> {
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req.uri()
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.query()
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.map(|q| gql_request_from_get(q).map(GraphQLRequest::Single))
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.unwrap_or_else(|| {
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Err(GraphQLRequestError::Invalid(
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"'query' parameter is missing".to_string(),
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))
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})
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}
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async fn parse_post_req<S: ScalarValue>(
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body: Body,
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) -> Result<GraphQLRequest<S>, GraphQLRequestError> {
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let chunk = hyper::body::to_bytes(body)
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.await
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.map_err(GraphQLRequestError::BodyHyper)?;
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let input = String::from_utf8(chunk.iter().cloned().collect())
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.map_err(GraphQLRequestError::BodyUtf8)?;
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serde_json::from_str::<GraphQLRequest<S>>(&input).map_err(GraphQLRequestError::BodyJSONError)
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}
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pub async fn graphiql(graphql_endpoint: &str) -> Result<Response<Body>, hyper::Error> {
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let mut resp = new_html_response(StatusCode::OK);
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// XXX: is the call to graphiql_source blocking?
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*resp.body_mut() = Body::from(juniper::graphiql::graphiql_source(graphql_endpoint));
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Ok(resp)
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}
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pub async fn playground(graphql_endpoint: &str) -> Result<Response<Body>, hyper::Error> {
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let mut resp = new_html_response(StatusCode::OK);
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*resp.body_mut() = Body::from(juniper::http::playground::playground_source(
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graphql_endpoint,
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None,
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));
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Ok(resp)
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}
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fn render_error(err: GraphQLRequestError) -> Response<Body> {
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let message = format!("{}", err);
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let mut resp = new_response(StatusCode::BAD_REQUEST);
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*resp.body_mut() = Body::from(message);
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resp
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}
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async fn execute_request<CtxT, QueryT, MutationT, SubscriptionT, S>(
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root_node: Arc<RootNode<'static, QueryT, MutationT, SubscriptionT, S>>,
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context: Arc<CtxT>,
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request: GraphQLRequest<S>,
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) -> Response<Body>
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where
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S: ScalarValue + Send + Sync + 'static,
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CtxT: Send + Sync + 'static,
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QueryT: GraphQLType<S, Context = CtxT> + Send + Sync + 'static,
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MutationT: GraphQLType<S, Context = CtxT> + Send + Sync + 'static,
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SubscriptionT: GraphQLType<S, Context = CtxT> + Send + Sync + 'static,
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QueryT::TypeInfo: Send + Sync,
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MutationT::TypeInfo: Send + Sync,
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SubscriptionT::TypeInfo: Send + Sync,
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{
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let (is_ok, body) = request.execute_sync(root_node, context);
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let code = if is_ok {
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StatusCode::OK
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} else {
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StatusCode::BAD_REQUEST
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};
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let mut resp = new_response(code);
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resp.headers_mut().insert(
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header::CONTENT_TYPE,
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HeaderValue::from_static("application/json"),
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);
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*resp.body_mut() = body;
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resp
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}
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async fn execute_request_async<CtxT, QueryT, MutationT, SubscriptionT, S>(
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root_node: Arc<RootNode<'static, QueryT, MutationT, SubscriptionT, S>>,
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context: Arc<CtxT>,
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request: GraphQLRequest<S>,
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) -> Response<Body>
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where
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S: ScalarValue + Send + Sync + 'static,
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CtxT: Send + Sync + 'static,
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QueryT: GraphQLTypeAsync<S, Context = CtxT> + Send + Sync + 'static,
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MutationT: GraphQLTypeAsync<S, Context = CtxT> + Send + Sync + 'static,
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SubscriptionT: GraphQLType<S, Context = CtxT> + Send + Sync + 'static,
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QueryT::TypeInfo: Send + Sync,
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MutationT::TypeInfo: Send + Sync,
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SubscriptionT::TypeInfo: Send + Sync,
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{
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let (is_ok, body) = request.execute(root_node, context).await;
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let code = if is_ok {
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StatusCode::OK
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} else {
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StatusCode::BAD_REQUEST
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};
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let mut resp = new_response(code);
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resp.headers_mut().insert(
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header::CONTENT_TYPE,
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HeaderValue::from_static("application/json"),
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);
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*resp.body_mut() = body;
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resp
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}
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fn gql_request_from_get<S>(input: &str) -> Result<JuniperGraphQLRequest<S>, GraphQLRequestError>
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where
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S: ScalarValue,
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{
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let mut query = None;
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let operation_name = None;
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let mut variables = None;
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for (key, value) in form_urlencoded::parse(input.as_bytes()).into_owned() {
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match key.as_ref() {
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"query" => {
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if query.is_some() {
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return Err(invalid_err("query"));
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}
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query = Some(value)
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}
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"operationName" => {
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if operation_name.is_some() {
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return Err(invalid_err("operationName"));
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}
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}
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"variables" => {
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if variables.is_some() {
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return Err(invalid_err("variables"));
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}
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match serde_json::from_str::<InputValue<S>>(&value)
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.map_err(GraphQLRequestError::Variables)
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{
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Ok(parsed_variables) => variables = Some(parsed_variables),
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Err(e) => return Err(e),
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}
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}
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_ => continue,
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}
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}
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match query {
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Some(query) => Ok(JuniperGraphQLRequest::new(query, operation_name, variables)),
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None => Err(GraphQLRequestError::Invalid(
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"'query' parameter is missing".to_string(),
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)),
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}
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}
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fn invalid_err(parameter_name: &str) -> GraphQLRequestError {
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GraphQLRequestError::Invalid(format!(
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"'{}' parameter is specified multiple times",
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parameter_name
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))
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}
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fn new_response(code: StatusCode) -> Response<Body> {
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let mut r = Response::new(Body::empty());
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*r.status_mut() = code;
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r
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}
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fn new_html_response(code: StatusCode) -> Response<Body> {
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let mut resp = new_response(code);
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resp.headers_mut().insert(
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header::CONTENT_TYPE,
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HeaderValue::from_static("text/html; charset=utf-8"),
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);
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resp
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}
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#[derive(serde_derive::Deserialize)]
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#[serde(untagged)]
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#[serde(bound = "InputValue<S>: Deserialize<'de>")]
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enum GraphQLRequest<S = DefaultScalarValue>
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where
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S: ScalarValue,
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{
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Single(JuniperGraphQLRequest<S>),
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Batch(Vec<JuniperGraphQLRequest<S>>),
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}
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impl<S> GraphQLRequest<S>
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where
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S: ScalarValue,
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{
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fn execute_sync<'a, CtxT: 'a, QueryT, MutationT, SubscriptionT>(
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self,
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root_node: Arc<RootNode<'a, QueryT, MutationT, SubscriptionT, S>>,
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context: Arc<CtxT>,
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) -> (bool, hyper::Body)
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where
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S: 'a + Send + Sync,
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QueryT: GraphQLType<S, Context = CtxT> + 'a,
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MutationT: GraphQLType<S, Context = CtxT> + 'a,
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SubscriptionT: GraphQLType<S, Context = CtxT> + 'a,
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{
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match self {
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GraphQLRequest::Single(request) => {
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let res = request.execute_sync(&root_node, &context);
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let is_ok = res.is_ok();
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let body = Body::from(serde_json::to_string_pretty(&res).unwrap());
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(is_ok, body)
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}
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GraphQLRequest::Batch(requests) => {
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let results: Vec<_> = requests
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.into_iter()
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.map(move |request| {
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let root_node = root_node.clone();
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let res = request.execute_sync(&root_node, &context);
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let is_ok = res.is_ok();
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let body = serde_json::to_string_pretty(&res).unwrap();
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(is_ok, body)
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})
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.collect();
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let is_ok = !results.iter().any(|&(is_ok, _)| !is_ok);
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let bodies: Vec<_> = results.into_iter().map(|(_, body)| body).collect();
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let body = hyper::Body::from(format!("[{}]", bodies.join(",")));
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(is_ok, body)
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}
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}
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}
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async fn execute<'a, CtxT: 'a, QueryT, MutationT, SubscriptionT>(
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self,
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root_node: Arc<RootNode<'a, QueryT, MutationT, SubscriptionT, S>>,
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context: Arc<CtxT>,
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) -> (bool, hyper::Body)
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where
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S: Send + Sync,
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QueryT: GraphQLTypeAsync<S, Context = CtxT> + Send + Sync,
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MutationT: GraphQLTypeAsync<S, Context = CtxT> + Send + Sync,
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SubscriptionT: GraphQLType<S, Context = CtxT> + Send + Sync,
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QueryT::TypeInfo: Send + Sync,
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MutationT::TypeInfo: Send + Sync,
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SubscriptionT::TypeInfo: Send + Sync,
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CtxT: Send + Sync,
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{
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match self {
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GraphQLRequest::Single(request) => {
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let res = request.execute(&root_node, &context).await;
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let is_ok = res.is_ok();
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let body = Body::from(serde_json::to_string_pretty(&res).unwrap());
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(is_ok, body)
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}
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GraphQLRequest::Batch(requests) => {
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let futures = requests
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.iter()
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.map(|request| request.execute(&root_node, &context))
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.collect::<Vec<_>>();
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let results = futures::future::join_all(futures).await;
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let is_ok = results.iter().all(|res| res.is_ok());
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let bodies: Vec<_> = results
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.into_iter()
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.map(|res| serde_json::to_string_pretty(&res).unwrap())
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.collect();
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let body = hyper::Body::from(format!("[{}]", bodies.join(",")));
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(is_ok, body)
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}
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}
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}
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}
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#[derive(Debug)]
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enum GraphQLRequestError {
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BodyHyper(hyper::Error),
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BodyUtf8(FromUtf8Error),
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BodyJSONError(SerdeError),
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Variables(SerdeError),
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Invalid(String),
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}
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impl fmt::Display for GraphQLRequestError {
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fn fmt(&self, mut f: &mut fmt::Formatter) -> fmt::Result {
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match *self {
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GraphQLRequestError::BodyHyper(ref err) => fmt::Display::fmt(err, &mut f),
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GraphQLRequestError::BodyUtf8(ref err) => fmt::Display::fmt(err, &mut f),
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GraphQLRequestError::BodyJSONError(ref err) => fmt::Display::fmt(err, &mut f),
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GraphQLRequestError::Variables(ref err) => fmt::Display::fmt(err, &mut f),
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GraphQLRequestError::Invalid(ref err) => fmt::Display::fmt(err, &mut f),
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}
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}
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}
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impl Error for GraphQLRequestError {
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fn source(&self) -> Option<&(dyn Error + 'static)> {
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match *self {
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GraphQLRequestError::BodyHyper(ref err) => Some(err),
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GraphQLRequestError::BodyUtf8(ref err) => Some(err),
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GraphQLRequestError::BodyJSONError(ref err) => Some(err),
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GraphQLRequestError::Variables(ref err) => Some(err),
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GraphQLRequestError::Invalid(_) => None,
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use futures;
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use hyper::{
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service::{make_service_fn, service_fn},
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Body, Method, Response, Server, StatusCode,
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};
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use juniper::{
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http::tests as http_tests,
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tests::{model::Database, schema::Query},
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EmptyMutation, EmptySubscription, RootNode,
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};
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use reqwest::{self, Response as ReqwestResponse};
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use std::{net::SocketAddr, sync::Arc, thread, time::Duration};
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struct TestHyperIntegration;
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impl http_tests::HTTPIntegration for TestHyperIntegration {
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fn get(&self, url: &str) -> http_tests::TestResponse {
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let url = format!("http://127.0.0.1:3001/graphql{}", url);
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make_test_response(reqwest::get(&url).expect(&format!("failed GET {}", url)))
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}
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fn post(&self, url: &str, body: &str) -> http_tests::TestResponse {
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let url = format!("http://127.0.0.1:3001/graphql{}", url);
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let client = reqwest::Client::new();
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let res = client
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.post(&url)
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.body(body.to_string())
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.send()
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.expect(&format!("failed POST {}", url));
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make_test_response(res)
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}
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}
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fn make_test_response(mut response: ReqwestResponse) -> http_tests::TestResponse {
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let status_code = response.status().as_u16() as i32;
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let body = response.text().unwrap();
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let content_type_header = response.headers().get(reqwest::header::CONTENT_TYPE);
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let content_type = if let Some(ct) = content_type_header {
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format!("{}", ct.to_str().unwrap())
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} else {
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String::default()
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};
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http_tests::TestResponse {
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status_code,
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body: Some(body),
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content_type,
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}
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}
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#[tokio::test]
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async fn test_hyper_integration() {
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let addr: SocketAddr = ([127, 0, 0, 1], 3001).into();
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let db = Arc::new(Database::new());
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let root_node = Arc::new(RootNode::new(
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Query,
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EmptyMutation::<Database>::new(),
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EmptySubscription::<Database>::new(),
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));
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let new_service = make_service_fn(move |_| {
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let root_node = root_node.clone();
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let ctx = db.clone();
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async move {
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Ok::<_, hyper::Error>(service_fn(move |req| {
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let root_node = root_node.clone();
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let ctx = ctx.clone();
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let matches = {
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let path = req.uri().path();
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match req.method() {
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&Method::POST | &Method::GET => {
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path == "/graphql" || path == "/graphql/"
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}
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_ => false,
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}
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};
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async move {
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if matches {
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super::graphql(root_node, ctx, req).await
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} else {
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let mut response = Response::new(Body::empty());
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*response.status_mut() = StatusCode::NOT_FOUND;
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Ok(response)
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}
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}
|
|
}))
|
|
}
|
|
});
|
|
|
|
let (shutdown_fut, shutdown) = futures::future::abortable(async {
|
|
tokio::time::delay_for(Duration::from_secs(60)).await;
|
|
});
|
|
|
|
let server = Server::bind(&addr)
|
|
.serve(new_service)
|
|
.with_graceful_shutdown(async {
|
|
shutdown_fut.await.unwrap_err();
|
|
});
|
|
|
|
tokio::task::spawn_blocking(move || {
|
|
thread::sleep(Duration::from_millis(10)); // wait 10ms for server to bind
|
|
let integration = TestHyperIntegration;
|
|
http_tests::run_http_test_suite(&integration);
|
|
shutdown.abort();
|
|
});
|
|
|
|
if let Err(e) = server.await {
|
|
eprintln!("server error: {}", e);
|
|
}
|
|
}
|
|
}
|