Create gRPC clients for Nearby Identity APIs.

sharing/flags/generated/nearby_sharing_feature_flags.h

@@ -111,7 +111,7 @@ constexpr auto kUpdateTrack =
 // Enable the info banner to display duplicate Quick Share apps.
 constexpr auto kEnableConflictBanner =
     flags::Flag<bool>(kConfigPackage, "45661130", false);
-// Enable a persistent BETA label.
+// Enable a persistent BETA label across the Quick Share macOS app.
 constexpr auto kEnableMacosBetaLabel =
     flags::Flag<bool>(kConfigPackage, "45662570", true);
 

sharing/internal/api/BUILD

@@ -21,6 +21,7 @@ cc_library(
         "bluetooth_adapter.h",
         "fast_init_ble_beacon.h",
         "fast_initiation_manager.h",
+        "identity_rpc_client.h",
         "network_monitor.h",
         "preference_manager.h",
         "private_certificate_data.h",
@@ -40,6 +41,7 @@ cc_library(
     deps = [
         "//internal/platform:types",
         "//internal/platform/implementation:account_manager",
+        "//proto/identity/v1:rpcs_cc_proto",
         "//sharing/analytics",
         "//sharing/proto:share_cc_proto",
         "@com_google_absl//absl/functional:any_invocable",

sharing/internal/api/identity_rpc_client.h

@@ -0,0 +1,61 @@
+// Copyright 2023 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_SHARING_INTERNAL_API_IDENTITY_RPC_CLIENT_H_
+#define THIRD_PARTY_NEARBY_SHARING_INTERNAL_API_IDENTITY_RPC_CLIENT_H_
+
+#include <memory>
+
+#include "absl/functional/any_invocable.h"
+#include "absl/status/statusor.h"
+#include "proto/identity/v1/rpcs.pb.h"
+
+namespace nearby::sharing::api {
+
+// IdentityRpcClient is used to access Nearby Identity backend APIs.
+class IdentityRpcClient {
+ public:
+  IdentityRpcClient() = default;
+  virtual ~IdentityRpcClient() = default;
+
+  virtual void QuerySharedCredentials(
+      const google::nearby::identity::v1::QuerySharedCredentialsRequest&
+          request,
+      absl::AnyInvocable<
+          void(const absl::StatusOr<
+               google::nearby::identity::v1::QuerySharedCredentialsResponse>&
+                   response) &&>
+          callback) = 0;
+
+  virtual void PublishDevice(
+      const google::nearby::identity::v1::PublishDeviceRequest& request,
+      absl::AnyInvocable<
+          void(const absl::StatusOr<google::nearby::identity::v1::
+                                        PublishDeviceResponse>& response) &&>
+          callback) = 0;
+};
+
+// Interface for creating IdentityRpcClient instances. Because each
+// IdentityRpcClient instance can only be used for one API call, a factory
+// makes it easier to make multiple requests in sequence or in parallel.
+class IdentityRpcClientFactory {
+ public:
+  IdentityRpcClientFactory() = default;
+  virtual ~IdentityRpcClientFactory() = default;
+  virtual std::unique_ptr<IdentityRpcClient> CreateInstance() = 0;
+};
+
+}  // namespace nearby::sharing::api
+
+#endif  // THIRD_PARTY_NEARBY_SHARING_INTERNAL_API_IDENTITY_RPC_CLIENT_H_