OAuth and Drive API, can't fetch files

[Mikko Tanskanen]

Hi all,

I have a web application that needs to list all files from my Google Drive and then fetch them when clicked.
I use OAuth for authenticating and it seems to work (the same code works well with Calendar API)

Basically it is:

credential = new GoogleCredential.Builder().setTransport(HTTP_TRANSPORT)
                            .setJsonFactory(JSON_FACTORY)
                            .setServiceAccountId(apiEmail)
                            .setServiceAccountScopes(DriveScopes.DRIVE)
                            .setServiceAccountPrivateKeyFromP12File(p12File)
                            .build();
                   
                    credential.refreshToken();
                   
                    service = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential)
                            .setApplicationName("My API")
                            .build();

After that I try:

FileList files = service.files().list().execute();

The returned FileList is:

{"etag":"\"_U9FTLXcHskmKgrWAZqJlfW8kCo/vyGp6PvFo4RvsFtPoIWeCReyIC8\"","items":[],"kind":"drive#fileList","selfLink":"https://www.googleapis.com/drive/v2/files"}

 

If I check that selfLink the contents is:

{
 "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."
 }
}

Daily limit is not an issue here.

When downloading a file this is performed:

File file = service.files().get(fileId).execute();

And it produces this (fileId exists):

An error occured: com.google.api.client.googleapis.json.GoogleJsonResponseException: 404 Not Found
{
  "code" : 404,
  "errors" : [ {
    "domain" : "global",
    "message" : "File not found: 0B97KF40kTwrTaTllMnZCTV9ZSnM",
    "reason" : "notFound"
  } ],
  "message" : "File not found: 0B97KF40kTwrTaTllMnZCTV9ZSnM"
}

And again when checking https://www.googleapis.com/drive/v2/files/0B97KF40kTwrTaTllMnZCTV9ZSnM the same "dailyLimitExceededUnreg" is seen.

What is going on here, is there a problem in my authentication?

[Mikko Tanskanen]

I use OAuth2 (of course) and not OAuth. And I should add, that accessToken in credential is null before refreshToken() method call. I have enabled Drive and Drive SDK in Console. Should I configure Drive Integration in Drive SDK somehow? From Googles documentation I have understood that it's not necessary and the methods I'm using should work without further configuring.

[Mikko Tanskanen]

It seems that the file I tried to download was not shared with dev account (it was not uploaded via API) and thus I couldn't download it via API.

File list started working when I changed constructor of service as:

service = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, null)
                        .setHttpRequestInitializer(credential)
                        .setApplicationName("My API")
                        .build();

[Naveen Agarwal]

Glad to see you were able to get this resolved.

Thanks

Naveen

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