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GitHub - async-graphql/async-graphql: A GraphQL server library implemented in Rust
A GraphQL server library implemented in Rust. Contribute to async-graphql/async-graphql development by creating an account on GitHub.
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GitHub - async-graphql/async-graphql: A GraphQL server library implemented in Rust

GitHub - async-graphql/async-graphql: A GraphQL server library implemented in Rust

async-graphql

a high-performance graphql server library that's fully specification compliant

Book中文文档DocsGitHub repositoryCargo package


ci status code coverage Unsafe Rust forbidden Crates.io version docs.rs docs downloads PRs Welcome

This crate uses #![forbid(unsafe_code)] to ensure everything is implemented in 100% safe Rust.

Static schema

use std::error::Error;

use async_graphql::{http::GraphiQLSource, EmptyMutation, EmptySubscription, Object, Schema};
use async_graphql_poem::*;
use poem::{listener::TcpListener, web::Html, *};

struct Query;

#[Object]
impl Query {
    async fn howdy(&self) -> &'static str {
        "partner"
    }
}

#[handler]
async fn graphiql() -> impl IntoResponse {
    Html(GraphiQLSource::build().finish())
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
    // create the schema
    let schema = Schema::build(Query, EmptyMutation, EmptySubscription).finish();

    // start the http server
    let app = Route::new().at("/", get(graphiql).post(GraphQL::new(schema)));
    println!("GraphiQL: http://localhost:8000");
    Server::new(TcpListener::bind("0.0.0.0:8000"))
        .run(app)
        .await?;
    Ok(())
}

Dynamic schema

Requires the dynamic-schema feature to be enabled.

use std::error::Error;

use async_graphql::{dynamic::*, http::GraphiQLSource};
use async_graphql_poem::*;
use poem::{listener::TcpListener, web::Html, *};

#[handler]
async fn graphiql() -> impl IntoResponse {
    Html(GraphiQLSource::build().finish())
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
    let query = Object::new("Query").field(Field::new(
        "howdy",
        TypeRef::named_nn(TypeRef::STRING),
        |_| FieldFuture::new(async { "partner" }),
    ));

    // create the schema
    let schema = Schema::build(query, None, None).register(query).finish()?;

    // start the http server
    let app = Route::new().at("/", get(graphiql).post(GraphQL::new(schema)));
    println!("GraphiQL: http://localhost:8000");
    Server::new(TcpListener::bind("0.0.0.0:8000"))
        .run(app)
        .await?;
    Ok(())
}

⚠️Security

I strongly recommend limiting the complexity and depth of queries in a production environment to avoid possible DDos attacks.

Features

  • Static and dynamic schemas are fully supported
  • Fully supports async/await
  • Type safety
  • Rustfmt friendly (Procedural Macro)
  • Custom scalars
  • Minimal overhead
  • Easy integration (poem, axum, actix-web, tide, warp, rocket ...)
  • Upload files (Multipart request)
  • Subscriptions (WebSocket transport)
  • Custom extensions
  • Error extensions
  • Limit query complexity/depth
  • Batch queries
  • Apollo Persisted Queries
  • Apollo Tracing extension
  • Apollo Federation(v2)

Note: Minimum supported Rust version: 1.75.0 or later

Examples

All examples are in the sub-repository, located in the examples directory.

git submodule update # update the examples repo
cd examples && cargo run --bin [name]

For more information, see the sub-repository README.md.

Integrations

Integrations are what glue async-graphql with your web server, here are provided ones, or you can build your own!

Crate features

This crate offers the following features. Most are not activated by default, except the integrations of GraphiQL (graphiql) and GraphQL Playground (playground):

feature enables
apollo_tracing Enable the Apollo tracing extension.
apollo_persisted_queries Enable the Apollo persisted queries extension.
bson Integrate with the bson crate.
bigdecimal Integrate with the bigdecimal crate.
cbor Support for serde_cbor.
chrono Integrate with the chrono crate.
chrono-tz Integrate with the chrono-tz crate.
dataloader Support DataLoader.
decimal Integrate with the rust_decimal crate.
dynamic-schema Support dynamic schema
fast_chemail Integrate with the fast_chemail crate.
graphiql Enables the GraphiQL IDE integration
hashbrown Integrate with the hashbrown crate.
log Enable the Logger extension.
opentelemetry Enable the OpenTelemetry extension.
playground Enables the GraphQL playground IDE integration
rawvalue Support raw values from serde_json
secrecy Integrate with the secrecy crate.
smol_str Integrate with the smol_str crate.
string_number Enable the StringNumber.
time Integrate with the time crate.
tracing Enable the Tracing extension.
tempfile Save the uploaded content in the temporary file.
tokio-sync Integrate with the tokio::sync::RwLock and tokio::sync::Mutex.
unblock Support Asynchronous reader for Upload
uuid Integrate with the uuid crate.
url Integrate with the url crate.

Observability

One of the tools used to monitor your graphql server in production is Apollo Studio. Apollo Studio is a cloud platform that helps you build, monitor, validate, and secure your organization's data graph. Add the extension crate async_graphql_apollo_studio_extension to make this avaliable.

Who's using async-graphql in production?

Community Showcase

  • rust-actix-graphql-sqlx-postgresql Using GraphQL with Rust and Apollo Federation
  • entity-rs A simplistic framework based on TAO, Facebook's distributed database for Social Graph.
  • vimwiki-server Provides graphql server to inspect and manipulate vimwiki files.
  • Diana Diana is a GraphQL system for Rust that's designed to work as simply as possible out of the box, without sacrificing configuration ability.
  • cindythink
  • sudograph

Blog Posts

References

License

Licensed under either of

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