An idiomatic C++ client library for theAccess Context Manager API, a service for setting attribute based access control on requests to GCP services.
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/accesscontextmanager/quickstart/directory, which should give you a taste of the Access Context Manager API C++ client library API.
#include "google/cloud/accesscontextmanager/v1/access_context_manager_client.h"
#include <iostream>
int main(int argc, char* argv[]) try {
if (argc != 2) {
std::cerr << "Usage: " << argv[0] << " policy-id\n";
return 1;
}
namespace accesscontextmanager = ::google::cloud::accesscontextmanager_v1;
auto client = accesscontextmanager::AccessContextManagerClient(
accesscontextmanager::MakeAccessContextManagerConnection());
auto const parent = std::string("accessPolicies/") + argv[1];
for (auto r : client.ListAccessLevels(parent)) {
if (!r) throw std::move(r).status();
std::cout << r->DebugString() << "\n";
}
return 0;
} catch (google::cloud::Status const& status) {
std::cerr << "google::cloud::Status thrown: " << status << "\n";
return 1;
}
[[["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 details the C++ client library for the Access Context Manager API, which is used for setting attribute-based access control on requests to GCP services.\u003c/p\u003e\n"],["\u003cp\u003eThe latest release candidate version is 2.37.0-rc, and the page lists version numbers ranging from 2.37.0-rc down to 2.11.0 for the C++ library.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eaccesscontextmanager_v1::AccessContextManagerClient\u003c/code\u003e class is the primary component of this library, with all Remote Procedure Calls (RPCs) exposed through its member functions.\u003c/p\u003e\n"],["\u003cp\u003eThe library provides resources for error handling, overriding the default endpoint and authentication credentials, as well as customizing retry policies, and how to use environment variables to configure the library's behavior.\u003c/p\u003e\n"],["\u003cp\u003eA quickstart guide is provided, demonstrating how to list access levels using the Access Context Manager API C++ client library with example code.\u003c/p\u003e\n"]]],[],null,["Version 2.26.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/accesscontextmanager/latest)\n- [2.41.0](/cpp/docs/reference/accesscontextmanager/2.41.0)\n- [2.40.0](/cpp/docs/reference/accesscontextmanager/2.40.0)\n- [2.39.0](/cpp/docs/reference/accesscontextmanager/2.39.0)\n- [2.38.0](/cpp/docs/reference/accesscontextmanager/2.38.0)\n- [2.37.0](/cpp/docs/reference/accesscontextmanager/2.37.0)\n- [2.36.0](/cpp/docs/reference/accesscontextmanager/2.36.0)\n- [2.35.0](/cpp/docs/reference/accesscontextmanager/2.35.0)\n- [2.34.0](/cpp/docs/reference/accesscontextmanager/2.34.0)\n- [2.33.0](/cpp/docs/reference/accesscontextmanager/2.33.0)\n- [2.32.0](/cpp/docs/reference/accesscontextmanager/2.32.0)\n- [2.31.0](/cpp/docs/reference/accesscontextmanager/2.31.0)\n- [2.30.0](/cpp/docs/reference/accesscontextmanager/2.30.0)\n- [2.29.0](/cpp/docs/reference/accesscontextmanager/2.29.0)\n- [2.28.0](/cpp/docs/reference/accesscontextmanager/2.28.0)\n- [2.27.0](/cpp/docs/reference/accesscontextmanager/2.27.0)\n- [2.26.0](/cpp/docs/reference/accesscontextmanager/2.26.0)\n- [2.25.1](/cpp/docs/reference/accesscontextmanager/2.25.1)\n- [2.24.0](/cpp/docs/reference/accesscontextmanager/2.24.0)\n- [2.23.0](/cpp/docs/reference/accesscontextmanager/2.23.0)\n- [2.22.1](/cpp/docs/reference/accesscontextmanager/2.22.1)\n- [2.21.0](/cpp/docs/reference/accesscontextmanager/2.21.0)\n- [2.20.0](/cpp/docs/reference/accesscontextmanager/2.20.0)\n- [2.19.0](/cpp/docs/reference/accesscontextmanager/2.19.0)\n- [2.18.0](/cpp/docs/reference/accesscontextmanager/2.18.0)\n- [2.17.0](/cpp/docs/reference/accesscontextmanager/2.17.0)\n- [2.16.0](/cpp/docs/reference/accesscontextmanager/2.16.0)\n- [2.15.1](/cpp/docs/reference/accesscontextmanager/2.15.1)\n- [2.14.0](/cpp/docs/reference/accesscontextmanager/2.14.0)\n- [2.13.0](/cpp/docs/reference/accesscontextmanager/2.13.0)\n- [2.12.0](/cpp/docs/reference/accesscontextmanager/2.12.0)\n- [2.11.0](/cpp/docs/reference/accesscontextmanager/2.11.0) \n\nAccess Context Manager API C++ Client Library\n=============================================\n\nAn idiomatic C++ client library for the [Access Context Manager API](https://cloud.google.com/access-context-manager), a service for setting attribute based access control on requests to GCP services.\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/accesscontextmanager/quickstart/` directory, which should give you a taste of the Access Context Manager API C++ client library API. \n\n #include \"google/cloud/accesscontextmanager/v1/access_context_manager_client.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 \" policy-id\\n\";\n return 1;\n }\n\n namespace accesscontextmanager = ::google::cloud::accesscontextmanager_v1;\n auto client = accesscontextmanager::AccessContextManagerClient(\n accesscontextmanager::MakeAccessContextManagerConnection());\n\n auto const parent = std::string(\"accessPolicies/\") + argv[1];\n for (auto r : client.ListAccessLevels(parent)) {\n if (!r) throw std::move(r).status();\n std::cout \u003c\u003c r-\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\nThe main class in this library is [`accesscontextmanager_v1::AccessContextManagerClient`](/cpp/docs/reference/accesscontextmanager/2.26.0/classgoogle_1_1cloud_1_1accesscontextmanager__v1_1_1AccessContextManagerClient). All RPCs are exposed as member functions of this class. Other classes provide helpers, configuration parameters, and infrastructure to mock [`accesscontextmanager_v1::AccessContextManagerClient`](/cpp/docs/reference/accesscontextmanager/2.26.0/classgoogle_1_1cloud_1_1accesscontextmanager__v1_1_1AccessContextManagerClient) when testing your application.\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/accesscontextmanager/2.26.0/accesscontextmanager-override-endpoint) - describes how to override the default endpoint.\n- [How to Override the Authentication Credentials](/cpp/docs/reference/accesscontextmanager/2.26.0/accesscontextmanager-override-authentication) - describes how to change the authentication credentials used by the library.\n- [Override Retry, Backoff, and Idempotency Policies](/cpp/docs/reference/accesscontextmanager/2.26.0/accesscontextmanager-override-retry) - describes how to change the default retry policies.\n- [Environment Variables](/cpp/docs/reference/accesscontextmanager/2.26.0/accesscontextmanager-env) - describes environment variables that can configure the behavior of the library."]]