I'm looking at migrating to the new Java client library as part of the upgrade from v201109. One thing I thought was going to be a benefit of this migration was long-lived access tokens, to enable long-running services to use the API without having to worry about refreshing the ClientLogin token. Now that I've done some more digging, it appears that OAuth2 doesn't have long-lived tokens. Instead, you get an access token and a refresh token, and there is some way that an expired access token gets refreshed behind the scenes.
I'm unclear on the implications of this for how I can deploy multiple services that use the API without any user interaction. I have successfully followed the OAuth2 example to get an authorization code using a browser, and then I can take that code and get a credential with an access and refresh token. Subsequently, I can create an OAuth2 credential from these 2 tokens, without using the browser to get a new authorization code. However, this doesn't work after some period of time -- I have to start over and get a new authorization code using the browser. I've seen reference to the CredentialsStore where you keep track of new access/refresh tokens as they change, which would be fine for a single service to manage. But with multiple services, would I need a centralized CredentialsStore that they would all share, so that each one gets the latest token? That's a non-starter for me. Is there something I'm missing about how I can use OAuth2 with multiple long-lived services? Otherwise I am going to continue with ClientLogin, and give up on my dream of non-expiring tokens. Or is there some way of re-obtaining an authorization token without user interaction? -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog and discussion group: http://adwordsapi.blogspot.com http://groups.google.com/group/adwords-api =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API Forum" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/adwords-api?hl=en
