Unless otherwise configured, the client libraries use Application Default Credentials to authenticate with Google Cloud Services. While this works for most applications, in some cases you may need to override this default. You can do so by providing the UnifiedCredentialsOption The following example shows how to explicitly load a service account key file:
[](std::string const& keyfile) {
auto is = std::ifstream(keyfile);
is.exceptions(std::ios::badbit); // Minimal error handling in examples
auto contents = std::string(std::istreambuf_iterator<char>(is.rdbuf()), {});
auto options =
google::cloud::Options{}.set<google::cloud::UnifiedCredentialsOption>(
google::cloud::MakeServiceAccountCredentials(contents));
return google::cloud::profiler_v2::ProfilerServiceClient(
google::cloud::profiler_v2::MakeProfilerServiceConnection(options));
}
[[["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 2025-03-14 UTC."],[[["The latest version of the profiler documentation available is 2.37.0-rc, with numerous previous versions, ranging from 2.36.0 down to 2.11.0."],["By default, client libraries use Application Default Credentials for authentication with Google Cloud Services, but this can be overridden if needed."],["You can override default credentials by using `UnifiedCredentialsOption` and provide a service account key file as credentials, which is shown in the provided example code."],["For detailed information on managing service account keys, it's recommended to consult the \"Best practices for managing service account keys\" guide."],["The Authentication Components page provides further information on the `google::cloud::Credentials` objects."]]],[]]
