feat: add hello-world graphql server implementation

core/api-keys/BUCK

@@ -1,6 +1,13 @@
 rust_binary(
-    name = "main",
+    name = "api-keys",
     srcs = glob(["src/**/*.rs"]),
     crate_root = "src/main.rs",
     edition = "2021",
 )
+
+rust_binary(
+    name = "write-sdl",
+    srcs = glob(["src/**/*.rs"]),
+    crate_root = "src/bin/write_sdl.rs",
+    edition = "2021",
+)

core/api-keys/Cargo.toml

@@ -10,3 +10,5 @@ path = "src/bin/write_sdl.rs"
 [dependencies]
 async-graphql = { workspace = true }
 async-graphql-axum = { workspace = true }
+axum = "0.6.20"
+tokio = { version = "1.33.0", features = ["full"] }

core/api-keys/src/main.rs

@@ -1,3 +1,49 @@
-fn main() {
-    println!("Hello, world!");
+use async_graphql::{EmptyMutation, EmptySubscription, Object, Schema};
+use async_graphql_axum::{GraphQLRequest, GraphQLResponse};
+use axum::{routing::get, Extension, Router};
+
+#[tokio::main]
+async fn main() {
+    // Create a GraphQL schema with a simple query
+    let schema = Schema::build(QueryRoot, EmptyMutation, EmptySubscription).finish();
+
+    // Create an axum router
+    let app = Router::new()
+        .route(
+            "/graphql",
+            get(playground).post(axum::routing::post(graphql_handler)),
+        )
+        .layer(Extension(schema));
+
+    // Run the server
+    axum::Server::bind(&"0.0.0.0:8000".parse().unwrap())
+        .serve(app.into_make_service())
+        .await
+        .unwrap();
+}
+
+// GraphQL handler
+async fn graphql_handler(
+    schema: Extension<Schema<QueryRoot, EmptyMutation, EmptySubscription>>,
+    req: GraphQLRequest,
+) -> GraphQLResponse {
+    schema.execute(req.into_inner()).await.into()
+}
+
+// Playground handler
+async fn playground() -> impl axum::response::IntoResponse {
+    axum::response::Html(async_graphql::http::playground_source(
+        async_graphql::http::GraphQLPlaygroundConfig::new("/graphql"),
+    ))
+}
+
+// Define a simple query object
+#[derive(Default)]
+struct QueryRoot;
+
+#[Object]
+impl QueryRoot {
+    async fn hello_world(&self) -> &str {
+        "Hello, world!"
+    }
 }

dev/Tiltfile

@@ -166,6 +166,27 @@ local_resource(
   ]
 )
 
+def _buck2_dep_inputs(target):
+    cmd = [
+        "buck2",
+        "uquery",
+        "\"inputs(deps('{}'))\"".format(target),
+    ]
+    file_paths = str(local(" ".join(cmd))).splitlines()
+
+    return file_paths
+
+api_keys_target = "//core/api-keys:api-keys"
+# if is_ci:
+#   consent_target = "//core/api-keys:main"
+local_resource(
+    "api_keys",
+    labels = ["core"],
+    cmd = "buck2 build {}".format(api_keys_target),
+    serve_cmd = "buck2 run {}".format(api_keys_target),
+    deps = _buck2_dep_inputs(api_keys_target),
+)
+
 docker_compose("./docker-compose.deps.yml", project_name = "galoy-dev")
 
 for service in groups["bitcoin"]: