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."],[[["This page details the various versions of the profiler, ranging from the latest release candidate version 2.37.0-rc down to version 2.11.0."],["The content provides information on how to override default authentication credentials using the `UnifiedCredentialsOption` to authenticate with Google Cloud Services."],["The example demonstrates how to load a service account key file explicitly to override the default Application Default Credentials."],["For detailed instructions and security best practices on managing service account keys, refer to the linked Google Cloud guide."],["The page also contains a link to the Authentication Components document for more details on the factory functions that create `google::cloud::Credentials` objects."]]],[]]
