Federation v1 is no longer supported

README.md

@@ -66,7 +66,7 @@ async fn main() {
 - Batch queries
 - Apollo Persisted Queries
 - Apollo Tracing extension
-- Apollo Federation
+- Apollo Federation(v2)
 
 > **Note**: Minimum supported Rust version: 1.59.0 or later
 
@@ -95,7 +95,7 @@ Integrations are what glue `async-graphql` with your web server, here are provid
 This crate offers the following features, all of which are not activated by default:
 
 | feature                        | enables                                                                                                                                                                                       |
-| :----------------------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+|:-------------------------------|:----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | **`apollo_tracing`**           | Enable the [Apollo tracing extension](extensions/struct.ApolloTracing.html).                                                                                                                  |
 | **`apollo_persisted_queries`** | Enable the [Apollo persisted queries extension](extensions/apollo_persisted_queries/struct.ApolloPersistedQueries.html).                                                                      |
 | **`log`**                      | Enable the [logger extension](extensions/struct.Logger.html).                                                                                                                                 |

docs/en/src/apollo_federation.md

@@ -2,7 +2,7 @@
 
 `Apollo Federation` is a `GraphQL` API gateway which can combine multiple GraphQL services, allowing each service to implement the subset of the API it is responsible for. You can read more in the [official documentation](https://www.apollographql.com/docs/apollo-server/federation/introduction).
 
-`Async-graphql` supports all the functionality of `Apollo Federation`, but some modifications to your `Schema` are required.
+`Async-graphql` supports all the functionality of `Apollo Federation v2`, but some modifications to your `Schema` are required.
 
 - You can use the `extends` property declaration on `async_graphql::Object` and `async_graphql::Interface` to extend a type offered by another implementing service.
 
@@ -20,26 +20,6 @@
 
 - The `override` directive is used to indicate that a field is now to be resolved by the current subgraph instead of the named subgraph.
 
-- The `link` directive is needed in order to indicate that the subgraph is Federation v2 compatible, enabling the `shareable`, `inaccessable`, and `override` directives.
-
-## Enabling Federation v2 using the link directive
-
-async-graphql provides a configuration function `enable_apollo_fed2_link` on the schema builder to have it print out an `extend schema` element with an appropriately configured `link` directive whenever the federation schema is requested.
-
-```rust
-Schema::build(Query, EmptyMutation, EmptySubscription)
-    .enable_apollo_fed2_link()
-    .finish()
-```
-
-and the following (or similar) will be attached to the schema:
-```
-extend schema @link(
-    url: "https://specs.apollo.dev/federation/v2.0",
-    import: ["@key", "@tag", "@shareable", "@inaccessible", "@override", "@external", "@provides", "@requires"]
-)
-```
-
 ## Entity lookup function
 
 ```rust

src/lib.rs

@@ -51,7 +51,7 @@
 //! * Apollo Tracing extension
 //! * Limit query complexity/depth
 //! * Error Extensions
-//! * Apollo Federation
+//! * Apollo Federation(v2)
 //! * Batch Queries
 //! * Apollo Persisted Queries
 //!

src/registry/export_sdl.rs

@@ -112,12 +112,10 @@ impl Registry {
         }
 
         if options.federation {
-            if self.enable_apollo_link {
-                writeln!(sdl, "extend schema @link(").ok();
-                writeln!(sdl, "\turl: \"https://specs.apollo.dev/federation/v2.0\",").ok();
-                writeln!(sdl, "\timport: [\"@key\", \"@tag\", \"@shareable\", \"@inaccessible\", \"@override\", \"@external\", \"@provides\", \"@requires\"]").ok();
-                writeln!(sdl, ")").ok();
-            }
+            writeln!(sdl, "extend schema @link(").ok();
+            writeln!(sdl, "\turl: \"https://specs.apollo.dev/federation/v2.0\",").ok();
+            writeln!(sdl, "\timport: [\"@key\", \"@tag\", \"@shareable\", \"@inaccessible\", \"@override\", \"@external\", \"@provides\", \"@requires\"]").ok();
+            writeln!(sdl, ")").ok();
         } else {
             writeln!(sdl, "schema {{").ok();
             writeln!(sdl, "\tquery: {}", self.query_type).ok();

src/registry/mod.rs

@@ -423,7 +423,6 @@ pub struct Registry {
     pub subscription_type: Option<String>,
     pub introspection_mode: IntrospectionMode,
     pub enable_federation: bool,
-    pub enable_apollo_link: bool,
     pub federation_subscription: bool,
     pub ignore_name_conflicts: HashSet<String>,
 }

src/schema.rs

@@ -173,16 +173,6 @@ impl<Query, Mutation, Subscription> SchemaBuilder<Query, Mutation, Subscription>
         self
     }
 
-    /// Enables printing the apollo federation 2 `@link` directive during
-    /// federation schema export; the directive is attached to an "extend
-    /// schema" element, and will have values set to ensure that
-    /// the federation schema directives and types are named properly.
-    #[must_use]
-    pub fn enable_apollo_fed2_link(mut self) -> Self {
-        self.registry.enable_apollo_link = true;
-        self
-    }
-
     /// Make the Federation SDL include subscriptions.
     ///
     /// Note: Not included by default, in order to be compatible with Apollo
@@ -389,7 +379,6 @@ where
             },
             introspection_mode: IntrospectionMode::Enabled,
             enable_federation: false,
-            enable_apollo_link: false,
             federation_subscription: false,
             ignore_name_conflicts,
         };

tests/federation.rs

@@ -605,7 +605,6 @@ pub async fn test_link_directive() {
     }
 
     let schema_sdl = Schema::build(Query, EmptyMutation, EmptySubscription)
-        .enable_apollo_fed2_link()
         .finish()
         .sdl_with_options(SDLExportOptions::new().federation());