Receive arg as Query String in Req

proto/cosmos/bank/v1beta1/query.proto

@@ -34,7 +34,7 @@ service Query {
 
   // SupplyOf queries the supply of a single coin.
   rpc SupplyOf(QuerySupplyOfRequest) returns (QuerySupplyOfResponse) {
-    option (google.api.http).get = "/cosmos/bank/v1beta1/supply/{denom}";
+    option (google.api.http).get = "/cosmos/bank/v1beta1/supply/by_denom";
   }
 
   // Params queries the parameters of x/bank module.
@@ -47,6 +47,10 @@ service Query {
     option (google.api.http).get = "/cosmos/bank/v1beta1/denoms_metadata/{denom}";
   }
 
+  rpc DenomMetadataByQueryString(QueryDenomMetadataByQueryStringRequest) returns (QueryDenomMetadataByQueryStringResponse) {
+    option (google.api.http).get = "/cosmos/bank/v1beta1/denoms_metadata_by_query_string";
+  }
+
   // DenomsMetadata queries the client metadata for all registered coin denominations.
   rpc DenomsMetadata(QueryDenomsMetadataRequest) returns (QueryDenomsMetadataResponse) {
     option (google.api.http).get = "/cosmos/bank/v1beta1/denoms_metadata";
@@ -185,9 +189,23 @@ message QueryDenomMetadataRequest {
   string denom = 1;
 }
 
+// QueryDenomMetadataByQueryStringRequest is the request type for the Query/DenomMetadata RPC method.
+// Identical with QueryDenomMetadataRequest but receives denom as query string.
+message QueryDenomMetadataByQueryStringRequest {
+  // denom is the coin denom to query the metadata for.
+  string denom = 1;
+}
+
 // QueryDenomMetadataResponse is the response type for the Query/DenomMetadata RPC
 // method.
 message QueryDenomMetadataResponse {
   // metadata describes and provides all the client information for the requested token.
   Metadata metadata = 1 [(gogoproto.nullable) = false];
 }
+
+// QueryDenomMetadataByQueryStringResponse is the response type for the Query/DenomMetadata RPC
+// method. Identical with QueryDenomMetadataResponse but receives denom as query string in request.
+message QueryDenomMetadataByQueryStringResponse {
+  // metadata describes and provides all the client information for the requested token.
+  Metadata metadata = 1 [(gogoproto.nullable) = false];
+}

x/bank/keeper/grpc_query.go

@@ -200,3 +200,19 @@ func (k BaseKeeper) DenomMetadata(c context.Context, req *types.QueryDenomMetada
 		Metadata: metadata,
 	}, nil
 }
+
+// DenomMetadataByQueryString is identical to DenomMetadata query, but receives request via query string.
+func (k BaseKeeper) DenomMetadataByQueryString(ctx context.Context, req *types.QueryDenomMetadataByQueryStringRequest) (*types.QueryDenomMetadataByQueryStringResponse, error) {
+	if req == nil {
+		return nil, status.Errorf(codes.InvalidArgument, "empty request")
+	}
+
+	res, err := k.DenomMetadata(ctx, &types.QueryDenomMetadataRequest{
+		Denom: req.Denom,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return &types.QueryDenomMetadataByQueryStringResponse{Metadata: res.Metadata}, nil
+}