Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://cloud.google.com/cpp/docs/reference/vision/2.34.0/vision-override-authentication below:

C++ Client Libraries | Google Cloud

Stay organized with collections Save and categorize content based on your preferences.

• 2.42.0-rc (latest)
• 2.41.0
• 2.40.0
• 2.39.0
• 2.38.0
• 2.37.0
• 2.36.0
• 2.35.0
• 2.34.0
• 2.33.0
• 2.32.0
• 2.31.0
• 2.30.0
• 2.29.0
• 2.28.0
• 2.27.0
• 2.26.0
• 2.25.1
• 2.24.0
• 2.23.0
• 2.22.1
• 2.21.0
• 2.20.0
• 2.19.0
• 2.18.0
• 2.17.0
• 2.16.0
• 2.15.1
• 2.14.0
• 2.13.0
• 2.12.0
• 2.11.0

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::vision_v1::ImageAnnotatorClient(
        google::cloud::vision_v1::MakeImageAnnotatorConnection(options));
  }

Follow these links to find examples for other *Client classes:

• vision_v1::ImageAnnotatorClient
• vision_v1::ProductSearchClient

Keep in mind that we chose this as an example because it is relatively easy to understand. Consult the Best practices for managing service account keys guide for more details.

Authentication Components - for more information on the factory functions to create google::cloud::Credentials objects.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2025-08-14 UTC.

[[["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 2025-08-14 UTC."],[[["The latest version available is 2.37.0-rc, with a variety of previous versions listed, ranging down to 2.11.0."],["The client libraries typically use Application Default Credentials for authentication, but this can be overridden."],["To override the default authentication, you can use `UnifiedCredentialsOption` by loading a service account key file, as shown in the provided example."],["Examples of overriding authentication are available for both `vision_v1::ImageAnnotatorClient` and `vision_v1::ProductSearchClient` classes."],["Refer to the \"Best practices for managing service account keys\" guide for more in-depth details on service account key management."]]],[]]

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4