fix(dapi): bound request metric labels

packages/dapi-grpc/build.rs

@@ -466,6 +466,10 @@ impl MappingConfig {
         let builder = typ
             .configure(tonic_prost_build::configure())
             .out_dir(out_dir.clone())
+            // Emit the FileDescriptorSet alongside the generated code so
+            // consumers can enumerate the served rpcs at test time (e.g.
+            // rs-dapi asserts its metrics allowlist covers every method).
+            .file_descriptor_set_path(out_dir.join("descriptor.bin"))
             .protoc_arg("--experimental_allow_proto3_optional");
 
         Self {

packages/dapi-grpc/src/lib.rs

@@ -26,6 +26,26 @@ pub mod core {
             env!("DAPI_GRPC_OUT_DIR"),
             "/core/wasm/org.dash.platform.dapi.v0.rs"
         ));
+
+        /// Serialized `FileDescriptorSet` for the Core proto — lets consumers
+        /// enumerate the served rpcs (e.g. to assert metrics allowlists).
+        #[cfg(all(feature = "server", not(target_arch = "wasm32")))]
+        pub const FILE_DESCRIPTOR_SET: &[u8] = include_bytes!(concat!(
+            env!("DAPI_GRPC_OUT_DIR"),
+            "/core/server/descriptor.bin"
+        ));
+
+        /// Serialized `FileDescriptorSet` for the Core proto — lets consumers
+        /// enumerate the served rpcs (e.g. to assert metrics allowlists).
+        #[cfg(all(
+            feature = "client",
+            not(feature = "server"),
+            not(target_arch = "wasm32")
+        ))]
+        pub const FILE_DESCRIPTOR_SET: &[u8] = include_bytes!(concat!(
+            env!("DAPI_GRPC_OUT_DIR"),
+            "/core/client/descriptor.bin"
+        ));
     }
 }
 
@@ -53,6 +73,28 @@ pub mod platform {
             env!("DAPI_GRPC_OUT_DIR"),
             "/platform/wasm/org.dash.platform.dapi.v0.rs"
         ));
+
+        /// Serialized `FileDescriptorSet` for the Platform proto — lets
+        /// consumers enumerate the served rpcs (e.g. to assert metrics
+        /// allowlists).
+        #[cfg(all(feature = "server", not(target_arch = "wasm32")))]
+        pub const FILE_DESCRIPTOR_SET: &[u8] = include_bytes!(concat!(
+            env!("DAPI_GRPC_OUT_DIR"),
+            "/platform/server/descriptor.bin"
+        ));
+
+        /// Serialized `FileDescriptorSet` for the Platform proto — lets
+        /// consumers enumerate the served rpcs (e.g. to assert metrics
+        /// allowlists).
+        #[cfg(all(
+            feature = "client",
+            not(feature = "server"),
+            not(target_arch = "wasm32")
+        ))]
+        pub const FILE_DESCRIPTOR_SET: &[u8] = include_bytes!(concat!(
+            env!("DAPI_GRPC_OUT_DIR"),
+            "/platform/client/descriptor.bin"
+        ));
     }
 
     #[cfg(feature = "tenderdash-proto")]

packages/rs-dapi/Cargo.toml

@@ -99,6 +99,8 @@ zeroize = "1.8"
 tempfile = "3.13.0"
 serial_test = "3.1.1"
 test-case = "3.3.1"
+# Decodes dapi-grpc's FILE_DESCRIPTOR_SET in the metrics allowlist test.
+prost-types = "0.14"
 
 [package.metadata.cargo-machete]
 ignored = ["rs-dash-event-bus"]