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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::deploy_v1::CloudDeployClient( google::cloud::deploy_v1::MakeCloudDeployConnection(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."],[[["The latest release candidate version is 2.37.0-rc, with multiple prior versions available, ranging down to 2.11.0."],["Client libraries typically use Application Default Credentials for Google Cloud Services authentication, but this can be overridden."],["You can override the default credentials by providing the UnifiedCredentialsOption, such as by loading a service account key file."],["The provided code demonstrates how to explicitly load a service account key file to override the default authentication."],["Refer to the \"Best practices for managing service account keys\" guide and the \"Authentication Components\" section for further details on service account key management and credential object creation."]]],[]]
