support json_names_for_fields

protoc-gen-swagger/defs.bzl

@@ -30,7 +30,7 @@ def _collect_includes(gen_dir, srcs):
 
     return includes
 
-def _run_proto_gen_swagger(ctx, direct_proto_srcs, transitive_proto_srcs, actions, protoc, protoc_gen_swagger, grpc_api_configuration, single_output):
+def _run_proto_gen_swagger(ctx, direct_proto_srcs, transitive_proto_srcs, actions, protoc, protoc_gen_swagger, grpc_api_configuration, single_output, json_names_for_fields):
     swagger_files = []
 
     inputs = direct_proto_srcs + transitive_proto_srcs
@@ -41,6 +41,9 @@ def _run_proto_gen_swagger(ctx, direct_proto_srcs, transitive_proto_srcs, action
         options.append("grpc_api_configuration=%s" % grpc_api_configuration.path)
         inputs.append(grpc_api_configuration)
 
+    if json_names_for_fields:
+        options.append("json_names_for_fields=true")
+
     includes = _collect_includes(ctx.genfiles_dir.path, direct_proto_srcs + transitive_proto_srcs)
 
     if single_output:
@@ -117,6 +120,7 @@ def _proto_gen_swagger_impl(ctx):
                 protoc_gen_swagger = ctx.executable._protoc_gen_swagger,
                 grpc_api_configuration = grpc_api_configuration,
                 single_output = ctx.attr.single_output,
+                json_names_for_fields = ctx.attr.json_names_for_fields,
             ),
         ),
     )]
@@ -136,6 +140,10 @@ protoc_gen_swagger = rule(
             default = False,
             mandatory = False,
         ),
+	"json_names_for_fields": attr.bool(
+	    default = False,
+	    mandatory = False,
+	 ),
         "_protoc": attr.label(
             default = "@com_google_protobuf//:protoc",
             executable = True,