Google Apps Script, OAuth requiring Login with Anonymous - oauth

Question

I'm trying to pull the revision history from a document that I own. When I debug it, I receive a 401 Error requiring login. However, I'm trying to use the anonymous ConsumerKey/ConsumerSecret to pass the login and when I debug it, urlFetch comes back as undefined. Here's the code I have so far:
//Get revison history
//fileId is the ID of the resource from Google Docs
function getRevisionHistory(fileId){
//Scope
var scope = 'https://www.googleapis.com/auth/drive';
//Get Google oAuth Arguments
var fetchArgs = googleOAuth_('docs', scope);
//Set the fetch method
fetchArgs.method = 'LIST';
//Feed URL
var url = 'https://www.googleapis.com/drive/v2/files/' + fileId + '/revisionsv=3&alt=json';
var urlFetch = UrlFetchApp.fetch(url);
//Get the json of revision history entry
var jsonFeed = Utilities.jsonParse(urlFetch.getContentText()).feed.entry;
//return the revison history feed
return jsonFeed
}
//Google oAuth
//Used by getRevisionHistory
function googleOAuth_(name, scope) {
var oAuthConfig = UrlFetchApp.addOAuthService(name);
oAuthConfig.setAccessTokenUrl("https://www.google.com/accounts/OAuthGetAccessToken");
oAuthConfig.setRequestTokenUrl("https://www.google.com/accounts/OAuthGetRequestToken?scope="+scope);
oAuthConfig.setAuthorizationUrl("https://www.google.com/accounts/OAuthAuthorizeToken");
oAuthConfig.setConsumerKey("anonymous");
oAuthConfig.setConsumerSecret("anonymous");
return {oAuthServiceName:name, oAuthUseToken:"always"};
}
function trackChanges(jsonFeed){
var doc = DocumentApp.getActiveDocument();
var docName = doc.getName();
var docId = doc.getId();
getRevisionHistory(docId)
var jsonString = Utilities.jsonStringify(jsonFeed);
var changes = DocumentApp.create("Track Changes for " + docName);
var text = changes.getBody().editAsText();
text.appendText(jsonString);
}
Any help would be greatly appreciated.

Answer 1

Try adding an API Key (&key=mykey) to the UrlFetch call to the Drive API. You can enable Drive API and get an API key at http://developer.google.com/console.
Read more for help here - https://developers.google.com/console/help/#generatingdevkeys