100 lines
2.3 KiB
Rust
100 lines
2.3 KiB
Rust
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//!
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//! This example demonstrates async/await usage with warp.
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//! NOTE: this uses tokio 0.1 , not the alpha tokio 0.2.
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#![feature(async_await, async_closure)]
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use juniper::{EmptyMutation, RootNode, FieldError};
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use warp::{http::Response, Filter};
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#[derive(Clone)]
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struct Context {
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}
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impl juniper::Context for Context {}
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struct User {
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id: i32,
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name: String,
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}
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#[juniper::object(Context = Context)]
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impl User {
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fn id(&self) -> i32 {
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self.id
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}
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fn name(&self) -> &str {
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&self.name
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}
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async fn friends(&self) -> Vec<User> {
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vec![]
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}
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}
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struct Query;
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#[juniper::object(Context = Context)]
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impl Query {
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async fn users() -> Vec<User> {
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vec![
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User{
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id: 1,
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name: "user1".into(),
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},
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]
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}
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/// Fetch a URL and return the response body text.
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async fn request(url: String) -> Result<String, FieldError> {
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use futures::{ compat::{Stream01CompatExt, Future01CompatExt}, stream::TryStreamExt};
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let res = reqwest::r#async::Client::new()
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.get(&url)
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.send()
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.compat()
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.await?;
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let body_raw = res.into_body().compat().try_concat().await?;
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let body = std::str::from_utf8(&body_raw).unwrap_or("invalid utf8");
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Ok(body.to_string())
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}
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}
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type Schema = RootNode<'static, Query, EmptyMutation<Context>>;
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fn schema() -> Schema {
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Schema::new(Query, EmptyMutation::<Context>::new())
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}
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fn main() {
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::std::env::set_var("RUST_LOG", "warp_async");
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env_logger::init();
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let log = warp::log("warp_server");
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let homepage = warp::path::end().map(|| {
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Response::builder()
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.header("content-type", "text/html")
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.body(format!(
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"<html><h1>juniper_warp</h1><div>visit <a href=\"/graphiql\">/graphiql</a></html>"
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))
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});
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log::info!("Listening on 127.0.0.1:8080");
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let state = warp::any().map(move || Context{} );
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let graphql_filter = juniper_warp::make_graphql_filter_async(schema(), state.boxed());
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warp::serve(
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warp::get2()
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.and(warp::path("graphiql"))
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.and(juniper_warp::graphiql_filter("/graphql"))
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.or(homepage)
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.or(warp::path("graphql").and(graphql_filter))
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.with(log),
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)
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.run(([127, 0, 0, 1], 8080));
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}
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