[−][src]Function juniper_warp::make_graphql_filter
pub fn make_graphql_filter<Query, Mutation, Context, S>(
schema: RootNode<'static, Query, Mutation, S>,
context_extractor: BoxedFilter<(Context,)>
) -> BoxedFilter<(Response<Vec<u8>>,)> where
S: ScalarValue + Send + Sync + 'static,
&'b S: ScalarRefValue<'b>,
Context: Send + 'static,
Query: GraphQLType<S, Context = Context, TypeInfo = ()> + Send + Sync + 'static,
Mutation: GraphQLType<S, Context = Context, TypeInfo = ()> + Send + Sync + 'static,
Make a filter for graphql endpoint.
The schema
argument is your juniper schema.
The context_extractor
argument should be a filter that provides the GraphQL context required by the schema.
In order to avoid blocking, this helper will use the tokio_threadpool
threadpool created by hyper to resolve GraphQL requests.
Example:
type UserId = String; struct AppState(Vec<i64>); struct ExampleContext(Arc<AppState>, UserId); struct QueryRoot; #[juniper::object( Context = ExampleContext )] impl QueryRoot { fn say_hello(context: &ExampleContext) -> String { format!( "good morning {}, the app state is {:?}", context.1, context.0 ) } } let schema = RootNode::new(QueryRoot, EmptyMutation::new()); let app_state = Arc::new(AppState(vec![3, 4, 5])); let app_state = warp::any().map(move || app_state.clone()); let context_extractor = warp::any() .and(warp::header::<String>("authorization")) .and(app_state) .map(|auth_header: String, app_state: Arc<AppState>| { let user_id = auth_header; // we believe them ExampleContext(app_state, user_id) }) .boxed(); let graphql_filter = make_graphql_filter(schema, context_extractor); let graphql_endpoint = warp::path("graphql") .and(warp::post2()) .and(graphql_filter);