Move grpc util functions to nearby.

PiperOrigin-RevId: 832425433

Package.swift

@@ -283,6 +283,7 @@ let package = Package(
         "internal/analytics/BUILD",
         "internal/flags/BUILD",
         "internal/network/BUILD",
+        "internal/rpc/BUILD",
         "internal/base/BUILD",
         "internal/data/BUILD",
         "internal/test/BUILD",

internal/rpc/BUILD

@@ -0,0 +1,29 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+load("@rules_cc//cc:cc_library.bzl", "cc_library")
+
+licenses(["notice"])
+
+cc_library(
+    name = "utils",
+    hdrs = ["utils.h"],
+    visibility = ["//:__subpackages__"],
+    deps = [
+        "//third_party/grpc:grpc++",
+        "@com_google_absl//absl/functional:any_invocable",
+        "@com_google_absl//absl/status",
+        "@com_google_absl//absl/status:statusor",
+    ],
+)

internal/rpc/utils.h

@@ -0,0 +1,50 @@
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef THIRD_PARTY_NEARBY_INTERNAL_RPC_UTILS_H_
+#define THIRD_PARTY_NEARBY_INTERNAL_RPC_UTILS_H_
+
+#include <string>
+
+#include "absl/functional/any_invocable.h"
+#include "absl/status/status.h"
+#include "absl/status/statusor.h"
+#include "third_party/grpc/include/grpcpp/client_context.h"
+#include "third_party/grpc/include/grpcpp/support/status.h"
+
+namespace nearby::rpc {
+
+// Converts a gRPC status to an absl status.
+inline absl::Status GrpcStatusToAbslStatus(const grpc::Status& status) {
+  if (status.ok()) {
+    return absl::OkStatus();
+  }
+  return absl::Status(static_cast<absl::StatusCode>(status.error_code()),
+                      std::string(status.error_message()));
+}
+
+// A struct that holds the arguments for an async RPC call. This is used to
+// ensure that the RPC arguments outlive the RPC call.
+template <typename Request, typename Response>
+struct AsyncRpcArgs {
+  grpc::ClientContext context;
+  Request request;
+  Response response;
+  absl::AnyInvocable<void(const absl::StatusOr<Response>& response) &&>
+      callback;
+};
+
+}  // namespace nearby::rpc
+
+#endif  // THIRD_PARTY_NEARBY_INTERNAL_RPC_UTILS_H_