Google Authentication Bridge

Google allow you to authenticate with their APIs with OAuth. That process can be a little tedious if you have to do it over and over. Google Authentication Bridge allows you to authenticate with Google and will store the refresh token in a file for subsequent use.

Usage

With Google Drive https://github.com/gimite/google-drive-ruby

auth = GoogleAuthenticationBridge::GoogleAuthentication.new(
  "https://docs.google.com/feeds/ https://docs.googleusercontent.com/ https://spreadsheets.google.com/feeds/",
  "client-id",
  "client-secret",
  "/path/to/token-file.yml"
)
# first time to create the refresh token
token = auth.get_oauth2_access_token("auth-code")
# subsequent times using the refresh token
token = auth.get_oauth2_access_token
session = GoogleDrive.login_with_oauth(token)

With Google API Client http://code.google.com/p/google-api-ruby-client/

auth = GoogleAuthenticationBridge::GoogleAuthentication.new(
  "https://www.googleapis.com/auth/analytics.readonly",
  "client-id",
  "client-secret",
  "/path/to/token-file.yml"
)
# first time to create the refresh token
token = auth.get_tokens("auth-code")
# subsequent times using the refresh token
token = auth.get_tokens

client = Google::APIClient.new
client.update_token!(token)

Rather than providing the credentials directly you can build the authentication object from a YAML configuration file.

auth = GoogleAuthenticationBridge::GoogleAuthentication.create_from_config_file(
  "scope",
  "/path/to/credentials.yml",
  "/path/to/token-file.yml"
)

The credentials file should contain the client id and the client secret.

---
:google_client_id: "client id"
:google_client_secret: "client secret"