Cannot UrlFetch when the function is triggered

Question

I built the Google Apps Script application that fetches data through external API.

I get expected result when run this app, without any errors. However, when run it by Time-Driven Trigger, I get the error. Anyone know why this error occurs?

the code:

function triggerFetchTest() {

  // get token
  try {

    var id = "my_id",
        password = "my_password",
        tokenUrl = ("https://api.example.jp/v1/foo/auth/get_token?id=" + id
                     + "&password=" + password),
        tokenResponse = UrlFetchApp.fetch(tokenUrl);

    var token = JSON.parse(tokenResponse.getContentText())["token"];

    Logger.log(token);

  }

  catch(e) {

    Logger.log(e);

  }

}

Additionally:

I can get correct response if I press "RUN" button in Script Editor.
I don't have any problem setting trigger.
I tried to set "muteHttpExceptions": true, but the error occurred.
The code below that shown in External APIs Doc is ok when even by triggered.

var url = 'https://gdata.youtube.com/feeds/api/videos?' + 'q=skateboarding+dog' + '&start-index=21' + '&max-results=10' + '&v=2'; var response = UrlFetchApp.fetch(url); Logger.log(response);

I want to set daily timer for this app and make the report automatically. Please give me some ideas.

*This post is my first post ever in Stackoverflow, and I'm not an English speaker in normal, so I'm sorry if you cannot read my English above...

Harold Harold · Accepted Answer · 2014-03-07T08:21:36

sama,
try to set your trigger by a function. First delete your trigger then add this function to your code and run it:

function setTrig(func){
  func=func||"triggerFetchTest";
  ScriptApp.newTrigger(func).timeBased().everyMinutes(5).create();
}

Something like this happened to me too can't remember exactly the explaination.

Cannot UrlFetch when the function is triggered

3 Answers