Google Drive API through Google App Engine

[Luca Matteis]

I'm trying to use the Google Drive API through the App Identity interface provided with Google App Engine. This basically allows my web application to communicate with Google's APIs from server to server.

However, after I set all the appropriate values and scopes, and enable all the right Google Drive knobs on the API console page, I still get this for a simple GET request to https://www.googleapis.com/drive/v2/files:

{ "error": { "errors": [ { "domain": "usageLimits", "reason": "dailyLimitExceededUnreg", "message": "Daily Limit for Unauthenticated Use Exceeded. Continued use requires signup.", "extendedHelp": "https://code.google.com/apis/console" } ], "code": 403, "message": "Daily Limit for Unauthenticated Use Exceeded. Continued use requires signup." }}

And this is the code - never mind the weird JS syntax, this is still using the Java API:

var scopes = new java.util.ArrayList();
scopes.add("https://www.googleapis.com/auth/drive");
var appIdentity = AppIdentityServiceFactory.getAppIdentityService();
var accessToken = appIdentity.getAccessToken(scopes);
var url = new URL("https://www.googleapis.com/drive/v2/files");
var connection = url.openConnection();
connection.setDoOutput(true);
connection.setRequestMethod("GET");
connection.addRequestProperty("Content-Type", "application/json");
connection.addRequestProperty("Authorization", "OAuth " + accessToken.getAccessToken());

Funny thing is that if I simply change the API to use the urlshortner API instead, it works:

var url = new URL("https://www.googleapis.com/urlshortener/v1/url/history");

And output:

{ "kind": "urlshortener#urlHistory", "totalItems": 0, "itemsPerPage": 30}

What am I missing?

[alex]

I think this might help:
http://www.youtube.com/watch?v=iK14bfd6qhs

-- alex

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