https://github.com/djc/gcp_auth

Minimal authentication library for Google Cloud Platform (GCP)
https://github.com/djc/gcp_auth

auth authentication gcp google-cloud-platform library rust

Last synced: 7 days ago
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Minimal authentication library for Google Cloud Platform (GCP)

• Host: GitHub
• URL: https://github.com/djc/gcp_auth
• Owner: djc
• License: other
• Created: 2020-05-22T11:05:34.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2024-04-16T10:09:40.000Z (7 months ago)
• Last Synced: 2024-05-10T01:03:20.451Z (6 months ago)
• Topics: auth, authentication, gcp, google-cloud-platform, library, rust
• Language: Rust
• Homepage:
• Size: 135 KB
• Stars: 57
• Watchers: 6
• Forks: 37
• Open Issues: 7
• Metadata Files:
  • Readme: README.md
  • License: LICENSE
  • Code of conduct: CODE_OF_CONDUCT.md
  • Security: SECURITY.md

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# GCP Auth

[![Crates.io][crates-badge]][crates-url]

[![Documentation][docs-badge]][docs-url]

[![MIT licensed][mit-badge]][mit-url]

[crates-badge]: https://img.shields.io/crates/v/gcp_auth.svg

[crates-url]: https://crates.io/crates/gcp_auth

[docs-badge]: https://docs.rs/gcp_auth/badge.svg

[docs-url]: https://docs.rs/gcp_auth

[mit-badge]: https://img.shields.io/badge/license-MIT-blue.svg

[mit-url]: LICENSE

GCP auth provides authentication using service accounts Google Cloud Platform (GCP)

GCP auth is a simple, minimal authentication library for Google Cloud Platform (GCP)

providing authentication using service accounts. Once authenticated, the service

account can be used to acquire bearer tokens for use in authenticating against GCP

services.

The library supports the following methods of retrieving tokens in the listed priority order:

1. Reading custom service account credentials from the path pointed to by the

   `GOOGLE_APPLICATION_CREDENTIALS` environment variable. Alternatively, custom service

   account credentials can be read from a JSON file or string.

2. Look for credentials in `.config/gcloud/application_default_credentials.json`;

   if found, use these credentials to request refresh tokens. This file can be created

   by invoking `gcloud auth application-default login`.

3. Use the default service account by retrieving a token from the metadata server.

4. Retrieving a token from the `gcloud` CLI tool, if it is available on the `PATH`.

For more detailed information and examples, see the [docs][docs-url].

This crate does not currently support Windows.

## Simple usage

The default way to use this library is to select the appropriate token provider using `provider()`. It will

find the appropriate authentication method and use it to retrieve tokens.

```rust,no_run

let provider = gcp_auth::provider().await?;

let scopes = &["https://www.googleapis.com/auth/cloud-platform"];

let token = provider.token(scopes).await?;

```

# License

Parts of the implementation have been sourced from [yup-oauth2](https://github.com/dermesser/yup-oauth2).

Licensed under [MIT license](http://opensource.org/licenses/MIT).