google: Add support for CredentialsParams, Client ID json, and JWT Subject

*Add support for Google Developers Console client_credentials.json as a TokenSource.
*Add support for JWT Subject (for domain-wide delegation when using service account as credentials source.)
*Add support for non-default AuthURL and TokenURL for authorized user credentials source.

To support this change, two new exported functions FindDefaultCredentialsWithParams and CredentialsFromJSONWithParams are introduced.

Change-Id: Ib467822e2c14e02f8ae68586665c439960cfbd5c
GitHub-Last-Rev: eb92ab4a212ad9ca72837d6e89e3c5f7e106a51c
GitHub-Pull-Request: golang/oauth2#490
Reviewed-by: Shin Fan <>
Reviewed-by: Cody Oss <>
Trust: Shin Fan <>
Trust: Cody Oss <>
2 files changed
tree: 23878f16fa70a8b93a059edce5b1ea10d272b036
  1. amazon/
  2. authhandler/
  3. bitbucket/
  4. cern/
  5. clientcredentials/
  6. endpoints/
  7. facebook/
  8. fitbit/
  9. foursquare/
  10. github/
  11. gitlab/
  12. google/
  13. heroku/
  14. hipchat/
  15. instagram/
  16. internal/
  17. jira/
  18. jws/
  19. jwt/
  20. kakao/
  21. linkedin/
  22. mailchimp/
  23. mailru/
  24. mediamath/
  25. microsoft/
  26. nokiahealth/
  27. odnoklassniki/
  28. paypal/
  29. slack/
  30. spotify/
  31. stackoverflow/
  32. twitch/
  33. uber/
  34. vk/
  35. yahoo/
  36. yandex/
  37. .travis.yml
  41. example_test.go
  42. go.mod
  43. go.sum
  45. oauth2.go
  46. oauth2_test.go
  48. token.go
  49. token_test.go
  50. transport.go
  51. transport_test.go

OAuth2 for Go

Go Reference Build Status

oauth2 package contains a client implementation for OAuth 2.0 spec.


go get

Or you can manually git clone the repository to $(go env GOPATH)/src/

See for further documentation and examples.

Policy for new packages

We no longer accept new provider-specific packages in this repo if all they do is add a single endpoint variable. If you just want to add a single endpoint, add it to the package.

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This repository uses Gerrit for code changes. To learn how to submit changes to this repository, see

The main issue tracker for the oauth2 repository is located at