Add feature gate `websocket` for async-graphql-tide.

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 - Add support for `graphql-ws` pings. [#635](https://github.com/async-graphql/async-graphql/issues/635)
+- Add feature gate `websocket` for async-graphql-tide. [#636](https://github.com/async-graphql/async-graphql/issues/636)
 
 ## [2.9.15] 2021-09-10
 

integrations/tide/Cargo.toml

@@ -11,6 +11,10 @@ repository = "https://github.com/async-graphql/async-graphql"
 keywords = ["futures", "async", "graphql"]
 categories = ["network-programming", "asynchronous"]
 
+[features]
+default = ["websocket"]
+websocket = ["tide-websockets"]
+
 [dependencies]
 async-graphql = { path = "../..", version = "=2.9.15" }
 async-trait = "0.1.48"
@@ -18,7 +22,7 @@ futures-util = "0.3.13"
 serde_json = "1.0.64"
 
 tide = { version = "0.16.0", default-features = false, features = ["h1-server"] }
-tide-websockets = "0.3.0"
+tide-websockets = { version = "0.4.0", optional = true }
 
 [dev-dependencies]
 # Surf lacks multipart support

integrations/tide/src/lib.rs

@@ -8,6 +8,7 @@
 #![allow(clippy::needless_doctest_main)]
 #![forbid(unsafe_code)]
 
+#[cfg(feature = "websocket")]
 mod subscription;
 
 use async_graphql::http::MultipartOptions;
@@ -21,6 +22,7 @@ use tide::{
     Body, Request, Response, StatusCode,
 };
 
+#[cfg(feature = "websocket")]
 pub use subscription::Subscription;
 
 /// Create a new GraphQL endpoint with the schema.

integrations/tide/src/subscription.rs

@@ -9,6 +9,7 @@ use tide::{Endpoint, Request, Response};
 use tide_websockets::Message;
 
 /// GraphQL subscription endpoint.
+#[cfg_attr(docsrs, doc(cfg(feature = "websocket")))]
 pub struct Subscription<S> {
     inner: Pin<Box<dyn Endpoint<S>>>,
 }