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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::webrisk_v1::WebRiskServiceClient( google::cloud::webrisk_v1::MakeWebRiskServiceConnection(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 2025-03-21 UTC."],[[["This webpage provides documentation for various versions of the Web Risk C++ client library, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc."],["The default authentication method for the client libraries is Application Default Credentials, but users can override this by providing a UnifiedCredentialsOption."],["Overriding the default authentication can be achieved by loading a service account key file, as demonstrated in the provided example code."],["Users should refer to the \"Best practices for managing service account keys\" guide for more information on managing service account keys."],["The Authentication Components documentation provides further details on creating `google::cloud::Credentials` objects using factory functions."]]],[]]
