89 lines
2.2 KiB
Rust
89 lines
2.2 KiB
Rust
use actix_web::{guard, web, App, HttpResponse, HttpServer};
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use async_graphql::http::{playground_source, GQLRequest, GQLResponse, IntoQueryBuilder};
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use async_graphql::{Context, EmptyMutation, EmptySubscription, Object, Schema, SimpleObject};
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use futures::TryFutureExt;
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type MySchema = Schema<Query, EmptyMutation, EmptySubscription>;
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#[SimpleObject]
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struct Product {
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#[field]
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upc: String,
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#[field]
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name: String,
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#[field]
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price: i32,
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}
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struct Query;
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#[Object(extends)]
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impl Query {
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#[field]
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async fn top_products<'a>(&self, ctx: &'a Context<'_>) -> &'a Vec<Product> {
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ctx.data::<Vec<Product>>()
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}
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#[entity]
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async fn find_product_by_upc<'a>(
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&self,
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ctx: &'a Context<'_>,
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upc: String,
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) -> Option<&'a Product> {
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let hats = ctx.data::<Vec<Product>>();
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hats.iter().find(|product| product.upc == upc)
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}
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}
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async fn index(s: web::Data<MySchema>, req: web::Json<GQLRequest>) -> web::Json<GQLResponse> {
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web::Json(GQLResponse(
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req.into_inner()
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.into_query_builder(&s)
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.and_then(|builder| builder.execute())
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.await,
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))
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}
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async fn gql_playgound() -> HttpResponse {
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HttpResponse::Ok()
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.content_type("text/html; charset=utf-8")
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.body(playground_source("/", None))
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}
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#[actix_rt::main]
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async fn main() -> std::io::Result<()> {
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let hats = vec![
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Product {
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upc: "top-1".to_string(),
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name: "Trilby".to_string(),
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price: 11,
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},
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Product {
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upc: "top-2".to_string(),
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name: "Fedora".to_string(),
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price: 22,
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},
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Product {
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upc: "top-3".to_string(),
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name: "Boater".to_string(),
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price: 33,
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},
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];
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let schema = Schema::build(Query, EmptyMutation, EmptySubscription)
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.data(hats)
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.finish();
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HttpServer::new(move || {
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App::new()
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.data(schema.clone())
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.service(web::resource("/").guard(guard::Post()).to(index))
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.service(web::resource("/").guard(guard::Get()).to(gql_playgound))
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})
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.bind("127.0.0.1:4002")?
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.run()
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.await
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}
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