impl(universe_domain): add demos for additional services (#15640)

Author: scotthart

google/cloud/universe_domain/demo/BUILD.bazel

@@ -16,9 +16,11 @@ licenses(["notice"])  # Apache 2.0
 
 service_demos = [
     "bigquery",
+    "bigtable",
     "compute",
     "kms",
     "pubsub",
+    "spanner",
     "storage",
 ]
 

google/cloud/universe_domain/demo/CMakeLists.txt

@@ -29,7 +29,14 @@ else ()
     set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>DLL")
 endif ()
 
-set(universe_domain_demos bigquery compute kms pubsub storage)
+set(universe_domain_demos
+    bigquery
+    bigtable
+    compute
+    kms
+    pubsub
+    spanner
+    storage)
 foreach (library ${universe_domain_demos})
     add_executable(${library}_demo ${library}.cc)
     target_link_libraries(${library}_demo google-cloud-cpp::${library}

google/cloud/universe_domain/demo/bigtable.cc

@@ -0,0 +1,71 @@
+// 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.
+
+//! [all]
+#include "google/cloud/bigtable/admin/bigtable_instance_admin_client.h"
+#include "google/cloud/bigtable/admin/bigtable_instance_admin_options.h"
+#include "google/cloud/location.h"
+#include "google/cloud/universe_domain.h"
+#include "google/cloud/universe_domain_options.h"
+#include <fstream>
+#include <iostream>
+
+int main(int argc, char* argv[]) try {
+  if (argc != 3 && argc != 4) {
+    std::cerr << "Usage: " << argv[0]
+              << " project-id location-id [sa-key-file]\n";
+    return 1;
+  }
+  namespace gc = ::google::cloud;
+  namespace admin = ::google::cloud::bigtable_admin;
+  auto const location = gc::Location(argv[1], argv[2]);
+
+  gc::Options options;
+  if (argc == 4) {
+    auto is = std::ifstream(argv[3]);
+    is.exceptions(std::ios::badbit);
+    auto contents = std::string(std::istreambuf_iterator<char>(is.rdbuf()), {});
+    options.set<google::cloud::UnifiedCredentialsOption>(
+        google::cloud::MakeServiceAccountCredentials(contents));
+  }
+
+  // Interrogate credentials for universe_domain and add the value to returned
+  // options.
+  auto ud_options = gc::AddUniverseDomainOption(gc::ExperimentalTag{}, options);
+  if (!ud_options.ok()) throw std::move(ud_options).status();
+
+  // Override retry policy to quickly exit if there's a failure.
+  ud_options->set<admin::BigtableInstanceAdminRetryPolicyOption>(
+      std::make_shared<
+          admin::BigtableInstanceAdminLimitedErrorCountRetryPolicy>(3));
+
+  auto client = admin::BigtableInstanceAdminClient(
+      admin::MakeBigtableInstanceAdminConnection(*ud_options));
+
+  std::cout << "bigtable.ListInstances:\n";
+  auto response = client.ListInstances(location.project().FullName());
+  if (!response) throw std::move(response).status();
+  for (auto const& i : response->instances()) {
+    std::string name = i.name();
+    std::cout << "short_instance_name: " << name.substr(name.rfind('/') + 1)
+              << "\n";
+    std::cout << i.create_time().DebugString() << "\n";
+  }
+
+  return 0;
+} catch (google::cloud::Status const& status) {
+  std::cerr << "google::cloud::Status thrown: " << status << "\n";
+  return 1;
+}
+//! [all]

google/cloud/universe_domain/demo/spanner.cc

@@ -0,0 +1,69 @@
+// 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.
+
+//! [all]
+#include "google/cloud/spanner/admin/instance_admin_client.h"
+#include "google/cloud/spanner/admin/instance_admin_options.h"
+#include "google/cloud/location.h"
+#include "google/cloud/universe_domain.h"
+#include "google/cloud/universe_domain_options.h"
+#include <fstream>
+#include <iostream>
+
+int main(int argc, char* argv[]) try {
+  if (argc != 3 && argc != 4) {
+    std::cerr << "Usage: " << argv[0]
+              << " project-id location-id [sa-key-file]\n";
+    return 1;
+  }
+  namespace gc = ::google::cloud;
+  namespace admin = ::google::cloud::spanner_admin;
+  auto const location = gc::Location(argv[1], argv[2]);
+
+  gc::Options options;
+  if (argc == 4) {
+    auto is = std::ifstream(argv[3]);
+    is.exceptions(std::ios::badbit);
+    auto contents = std::string(std::istreambuf_iterator<char>(is.rdbuf()), {});
+    options.set<google::cloud::UnifiedCredentialsOption>(
+        google::cloud::MakeServiceAccountCredentials(contents));
+  }
+
+  // Interrogate credentials for universe_domain and add the value to returned
+  // options.
+  auto ud_options = gc::AddUniverseDomainOption(gc::ExperimentalTag{}, options);
+  if (!ud_options.ok()) throw std::move(ud_options).status();
+
+  // Override retry policy to quickly exit if there's a failure.
+  ud_options->set<admin::InstanceAdminRetryPolicyOption>(
+      std::make_shared<admin::InstanceAdminLimitedErrorCountRetryPolicy>(3));
+
+  auto client = admin::InstanceAdminClient(
+      admin::MakeInstanceAdminConnection(*ud_options));
+
+  std::cout << "spanner.ListInstances:\n";
+  for (auto const& i : client.ListInstances(location.project().FullName())) {
+    if (!i) throw std::move(i).status();
+    std::string name = i->name();
+    std::cout << "short_instance_name: " << name.substr(name.rfind('/') + 1)
+              << "\n";
+    std::cout << i->create_time().DebugString() << "\n";
+  }
+
+  return 0;
+} catch (google::cloud::Status const& status) {
+  std::cerr << "google::cloud::Status thrown: " << status << "\n";
+  return 1;
+}
+//! [all]