ApiGee OAUTH Authorization
问题 I'm new in apigee. I need to make a callout in my proxy to fetch data from google fusion tables. FT Service require secure call using oath 2.0. I'm already made this workflow using custom proxy (without any OAUTH policy, and store token, refresh token and expiry in Key Value Map) also I made js to calculate expiration time and condition callout to refresh token. I understand that this is not correct way but I still can't get a clue how to make this call using building Oauth policy. :( It's