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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::storageinsights_v1::StorageInsightsClient( google::cloud::storageinsights_v1::MakeStorageInsightsConnection( 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 webpage provides documentation for various versions of the Storage Insights C++ client library, ranging from version 2.11.0 to 2.37.0-rc, with 2.37.0-rc being the latest release candidate."],["The primary focus is on how to override default authentication credentials for the Storage Insights client library when needed, which by default, utilizes Application Default Credentials."],["Overriding default credentials can be done using `UnifiedCredentialsOption`, as demonstrated in the example code that shows loading credentials from a service account key file."],["The documentation highlights that the provided example is for demonstration purposes and users should refer to best practices for managing service account keys."],["The documentation has links to other pages that explain more about Authentication Components, which is used to create the `google::cloud::Credentials` objects."]]],[]]
