An idiomatic C++ client library for theCloud Monitoring API, a service to manage your Cloud Monitoring data and configurations. This library is used to interact with the Cloud Monitoring API directly. If you are looking to instrument your application for Cloud Monitoring, we recommend usingOpenTelemetryor a similar framework.
While this library isGA, please note Google Cloud C++ client libraries donotfollowSemantic Versioning.
Quickstart
The following shows the code that you'll run in thegoogle/cloud/monitoring/quickstart/directory, which should give you a taste of the Cloud Monitoring API C++ client library API.
#include "google/cloud/monitoring/v3/alert_policy_client.h"
#include "google/cloud/project.h"
#include <iostream>
int main(int argc, char* argv[]) try {
if (argc != 2) {
std::cerr << "Usage: " << argv[0] << " project-id\n";
return 1;
}
namespace monitoring = ::google::cloud::monitoring_v3;
auto client = monitoring::AlertPolicyServiceClient(
monitoring::MakeAlertPolicyServiceConnection());
auto const project = google::cloud::Project(argv[1]);
for (auto a : client.ListAlertPolicies(project.FullName())) {
if (!a) throw std::move(a).status();
std::cout << a->DebugString() << "\n";
}
return 0;
} catch (google::cloud::Status const& status) {
std::cerr << "google::cloud::Status thrown: " << status << "\n";
return 1;
}
Main classes
This library offers multiple*Clientclasses, which are listed below. Each one of these classes exposes all the RPCs for a gRPCserviceas member functions of the class. This library groups multiple gRPC services because they are part of the same product or are often used together. A typical example may be the administrative and data plane operations for a single product.
The library also has other classes that provide helpers, configuration parameters, and infrastructure to mock the*Clientclasses when testing your application.
The library automatically retries requests that fail with transient errors, and usesexponential backoffto backoff between retries. Application developers can override the default policies.
More Information
Error Handling- describes how the library reports errors.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[[["\u003cp\u003eThis webpage provides documentation for the Cloud Monitoring API C++ client library, which allows direct interaction with the Cloud Monitoring API.\u003c/p\u003e\n"],["\u003cp\u003eThe library offers multiple client classes, such as \u003ccode\u003eDashboardsServiceClient\u003c/code\u003e, \u003ccode\u003eMetricsScopesClient\u003c/code\u003e, and \u003ccode\u003eAlertPolicyServiceClient\u003c/code\u003e, each exposing RPCs for a specific gRPC service.\u003c/p\u003e\n"],["\u003cp\u003eThe C++ client library automatically retries requests that experience transient errors using an exponential backoff strategy, but you can also override the default retry policy.\u003c/p\u003e\n"],["\u003cp\u003eThe library is in General Availability (GA), but does not follow semantic versioning.\u003c/p\u003e\n"],["\u003cp\u003eThe latest release candidate is version 2.37.0-rc, and the webpage also provides documentation for various versions of the library dating from version 2.11.0 to the latest release candidate version.\u003c/p\u003e\n"]]],[],null,["Version 2.12.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/monitoring/latest)\n- [2.41.0](/cpp/docs/reference/monitoring/2.41.0)\n- [2.40.0](/cpp/docs/reference/monitoring/2.40.0)\n- [2.39.0](/cpp/docs/reference/monitoring/2.39.0)\n- [2.38.0](/cpp/docs/reference/monitoring/2.38.0)\n- [2.37.0](/cpp/docs/reference/monitoring/2.37.0)\n- [2.36.0](/cpp/docs/reference/monitoring/2.36.0)\n- [2.35.0](/cpp/docs/reference/monitoring/2.35.0)\n- [2.34.0](/cpp/docs/reference/monitoring/2.34.0)\n- [2.33.0](/cpp/docs/reference/monitoring/2.33.0)\n- [2.32.0](/cpp/docs/reference/monitoring/2.32.0)\n- [2.31.0](/cpp/docs/reference/monitoring/2.31.0)\n- [2.30.0](/cpp/docs/reference/monitoring/2.30.0)\n- [2.29.0](/cpp/docs/reference/monitoring/2.29.0)\n- [2.28.0](/cpp/docs/reference/monitoring/2.28.0)\n- [2.27.0](/cpp/docs/reference/monitoring/2.27.0)\n- [2.26.0](/cpp/docs/reference/monitoring/2.26.0)\n- [2.25.1](/cpp/docs/reference/monitoring/2.25.1)\n- [2.24.0](/cpp/docs/reference/monitoring/2.24.0)\n- [2.23.0](/cpp/docs/reference/monitoring/2.23.0)\n- [2.22.1](/cpp/docs/reference/monitoring/2.22.1)\n- [2.21.0](/cpp/docs/reference/monitoring/2.21.0)\n- [2.20.0](/cpp/docs/reference/monitoring/2.20.0)\n- [2.19.0](/cpp/docs/reference/monitoring/2.19.0)\n- [2.18.0](/cpp/docs/reference/monitoring/2.18.0)\n- [2.17.0](/cpp/docs/reference/monitoring/2.17.0)\n- [2.16.0](/cpp/docs/reference/monitoring/2.16.0)\n- [2.15.1](/cpp/docs/reference/monitoring/2.15.1)\n- [2.14.0](/cpp/docs/reference/monitoring/2.14.0)\n- [2.13.0](/cpp/docs/reference/monitoring/2.13.0)\n- [2.12.0](/cpp/docs/reference/monitoring/2.12.0)\n- [2.11.0](/cpp/docs/reference/monitoring/2.11.0) \n\nCloud Monitoring API C++ Client Library\n=======================================\n\nAn idiomatic C++ client library for the [Cloud Monitoring API](https://cloud.google.com/monitoring), a service to manage your Cloud Monitoring data and configurations. This library is used to interact with the Cloud Monitoring API directly. If you are looking to instrument your application for Cloud Monitoring, we recommend using [OpenTelemetry](https://opentelemetry.io) or a similar framework.\n\nWhile this library is **GA** , please note Google Cloud C++ client libraries do **not** follow [Semantic Versioning](https://semver.org/).\n\n### Quickstart\n\nThe following shows the code that you'll run in the `google/cloud/monitoring/quickstart/` directory, which should give you a taste of the Cloud Monitoring API C++ client library API. \n\n #include \"google/cloud/monitoring/v3/alert_policy_client.h\"\n #include \"google/cloud/project.h\"\n #include \u003ciostream\u003e\n\n int main(int argc, char* argv[]) try {\n if (argc != 2) {\n std::cerr \u003c\u003c \"Usage: \" \u003c\u003c argv[0] \u003c\u003c \" project-id\\n\";\n return 1;\n }\n\n namespace monitoring = ::google::cloud::monitoring_v3;\n auto client = monitoring::AlertPolicyServiceClient(\n monitoring::MakeAlertPolicyServiceConnection());\n\n auto const project = google::cloud::Project(argv[1]);\n for (auto a : client.ListAlertPolicies(project.FullName())) {\n if (!a) throw std::move(a).status();\n std::cout \u003c\u003c a-\u003eDebugString() \u003c\u003c \"\\n\";\n }\n\n return 0;\n } catch (google::cloud::Status const& status) {\n std::cerr \u003c\u003c \"google::cloud::Status thrown: \" \u003c\u003c status \u003c\u003c \"\\n\";\n return 1;\n }\n\n### Main classes\n\nThis library offers multiple `*Client` classes, which are listed below. Each one of these classes exposes all the RPCs for a gRPC `service` as member functions of the class. This library groups multiple gRPC services because they are part of the same product or are often used together. A typical example may be the administrative and data plane operations for a single product.\n\nThe library also has other classes that provide helpers, configuration parameters, and infrastructure to mock the `*Client` classes when testing your application.\n\n- [`monitoring_dashboard_v1::DashboardsServiceClient`](/cpp/docs/reference/monitoring/2.12.0/classgoogle_1_1cloud_1_1monitoring__dashboard__v1_1_1DashboardsServiceClient)\n- [`monitoring_metricsscope_v1::MetricsScopesClient`](/cpp/docs/reference/monitoring/2.12.0/classgoogle_1_1cloud_1_1monitoring__metricsscope__v1_1_1MetricsScopesClient)\n- [`monitoring_v3::AlertPolicyServiceClient`](/cpp/docs/reference/monitoring/2.12.0/classgoogle_1_1cloud_1_1monitoring__v3_1_1AlertPolicyServiceClient)\n- [`monitoring_v3::GroupServiceClient`](/cpp/docs/reference/monitoring/2.12.0/classgoogle_1_1cloud_1_1monitoring__v3_1_1GroupServiceClient)\n- [`monitoring_v3::MetricServiceClient`](/cpp/docs/reference/monitoring/2.12.0/classgoogle_1_1cloud_1_1monitoring__v3_1_1MetricServiceClient)\n- [`monitoring_v3::NotificationChannelServiceClient`](/cpp/docs/reference/monitoring/2.12.0/classgoogle_1_1cloud_1_1monitoring__v3_1_1NotificationChannelServiceClient)\n- [`monitoring_v3::QueryServiceClient`](/cpp/docs/reference/monitoring/2.12.0/classgoogle_1_1cloud_1_1monitoring__v3_1_1QueryServiceClient)\n- [`monitoring_v3::ServiceMonitoringServiceClient`](/cpp/docs/reference/monitoring/2.12.0/classgoogle_1_1cloud_1_1monitoring__v3_1_1ServiceMonitoringServiceClient)\n- [`monitoring_v3::UptimeCheckServiceClient`](/cpp/docs/reference/monitoring/2.12.0/classgoogle_1_1cloud_1_1monitoring__v3_1_1UptimeCheckServiceClient)\n\n### Retry, Backoff, and Idempotency Policies.\n\nThe library automatically retries requests that fail with transient errors, and uses [exponential backoff](https://en.wikipedia.org/wiki/Exponential_backoff) to backoff between retries. Application developers can override the default policies.\n\n### More Information\n\n- [Error Handling](https://cloud.google.com/cpp/docs/reference/common/latest/common-error-handling.html) - describes how the library reports errors.\n- [How to Override the Default Endpoint](/cpp/docs/reference/monitoring/2.12.0/monitoring-override-endpoint) - describes how to override the default endpoint.\n- [How to Override the Authentication Credentials](/cpp/docs/reference/monitoring/2.12.0/monitoring-override-authentication) - describes how to change the authentication credentials used by the library.\n- [Environment Variables](/cpp/docs/reference/monitoring/2.12.0/monitoring-env) - describes environment variables that can configure the behavior of the library."]]