chore(link): add meta support (#2824)

generated/.tailcallrc.graphql

@@ -207,6 +207,10 @@ directive @link(
   """
   id: String
   """
+  Additional metadata pertaining to the linked resource.
+  """
+  meta: JSON
+  """
   The source of the link. It can be a URL or a path to a file. If a path is provided, 
   it is relative to the file that imports the link.
   """

generated/.tailcallrc.schema.json

@@ -803,6 +803,9 @@
             "null"
           ]
         },
+        "meta": {
+          "description": "Additional metadata pertaining to the linked resource."
+        },
         "src": {
           "description": "The source of the link. It can be a URL or a path to a file. If a path is provided, it is relative to the file that imports the link.",
           "type": "string"

src/core/config/link.rs

@@ -57,4 +57,7 @@ pub struct Link {
     /// The type of the link. It can be `Config`, or `Protobuf`.
     #[serde(default, skip_serializing_if = "is_default", rename = "type")]
     pub type_of: LinkType,
+    /// Additional metadata pertaining to the linked resource.
+    #[serde(default, skip_serializing_if = "is_default")]
+    pub meta: Option<serde_json::Value>,
 }

src/core/generator/generator.rs

@@ -90,6 +90,7 @@ impl Generator {
             id: None,
             src: metadata.path.to_owned(),
             type_of: LinkType::Protobuf,
+            meta: None,
         });
         Ok(config)
     }

src/core/grpc/data_loader_request.rs

@@ -73,6 +73,7 @@ mod tests {
             id: None,
             src: test_file.to_string(),
             type_of: LinkType::Protobuf,
+            meta: None,
         }]);
         let method = GrpcMethod {
             package: "greetings".to_string(),

src/core/grpc/protobuf.rs

@@ -266,6 +266,7 @@ pub mod tests {
             id: Some(id.clone()),
             src: path.to_string(),
             type_of: LinkType::Protobuf,
+            meta: None,
         }]);
 
         let method = GrpcMethod { package: id, service: "a".to_owned(), name: "b".to_owned() };

src/core/grpc/request_template.rs

@@ -160,6 +160,7 @@ mod tests {
             id: Some(id.clone()),
             src: test_file.to_string(),
             type_of: LinkType::Protobuf,
+            meta: None,
         }]);
         let method = GrpcMethod {
             package: id.to_string(),

tests/core/snapshots/test-link-support.md_client.snap

@@ -0,0 +1,55 @@
+---
+source: tests/core/spec.rs
+expression: formatted
+---
+scalar Bytes
+
+scalar Date
+
+scalar DateTime
+
+scalar Email
+
+scalar Empty
+
+scalar Int128
+
+scalar Int16
+
+scalar Int32
+
+scalar Int64
+
+scalar Int8
+
+scalar JSON
+
+type News {
+  id: Int
+}
+
+input NewsInput {
+  id: Int
+}
+
+scalar PhoneNumber
+
+type Query {
+  newsById(news: NewsInput!): News!
+}
+
+scalar UInt128
+
+scalar UInt16
+
+scalar UInt32
+
+scalar UInt64
+
+scalar UInt8
+
+scalar Url
+
+schema {
+  query: Query
+}

tests/core/snapshots/test-link-support.md_merged.snap

@@ -0,0 +1,26 @@
+---
+source: tests/core/spec.rs
+expression: formatter
+---
+schema
+  @server(port: 8000)
+  @upstream(baseURL: "http://localhost:50051", batch: {delay: 10, headers: [], maxSize: 1000})
+  @link(id: "news", src: "news.proto", meta: {description: "Test"}, type: Protobuf) {
+  query: Query
+}
+
+input NewsInput {
+  id: Int
+}
+
+type News {
+  id: Int
+}
+
+type NewsData {
+  news: [News]
+}
+
+type Query {
+  newsById(news: NewsInput!): News! @grpc(body: "{{.args.news}}", method: "news.NewsService.GetNews")
+}

tests/execution/test-link-support.md

@@ -0,0 +1,50 @@
+---
+identity: true
+---
+
+# test-link-support
+
+```protobuf @file:news.proto
+syntax = "proto3";
+
+import "google/protobuf/empty.proto";
+
+package news;
+
+message News {
+    int32 id = 1;
+}
+
+service NewsService {
+    rpc GetNews (NewsId) returns (News) {}
+}
+
+message NewsId {
+    int32 id = 1;
+}
+```
+
+```graphql @config
+schema
+  @server(port: 8000)
+  @upstream(baseURL: "http://localhost:50051", batch: {delay: 10, headers: [], maxSize: 1000})
+  @link(id: "news", src: "news.proto", meta: {description: "Test"}, type: Protobuf) {
+  query: Query
+}
+
+input NewsInput {
+  id: Int
+}
+
+type News {
+  id: Int
+}
+
+type NewsData {
+  news: [News]
+}
+
+type Query {
+  newsById(news: NewsInput!): News! @grpc(body: "{{.args.news}}", method: "news.NewsService.GetNews")
+}
+```