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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::containeranalysis_v1::ContainerAnalysisClient( google::cloud::containeranalysis_v1::MakeContainerAnalysisConnection( options)); }
Follow these links to find examples for other *Client classes:
[[["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 2025-04-23 UTC."],[[["This document provides a list of available versions for the Container Analysis C++ client library, ranging from version 2.11.0 to the latest release candidate 2.37.0-rc."],["The client libraries default to using Application Default Credentials for Google Cloud service authentication, but this can be overridden."],["You can override the default authentication by utilizing the `UnifiedCredentialsOption`, demonstrated here with an example of loading a service account key file."],["Examples are provided for `containeranalysis_v1::ContainerAnalysisClient` and `containeranalysis_v1::GrafeasClient` classes, showcasing how to override authentication using a service account key."],["The document references additional resources for best practices on managing service account keys and further information on authentication components, for more details."]]],[]]
