Insert event in google calendar using service account with Nodejs

Question

I can't insert an event using Nodejs with service account. The service account Email is already added into the account with the permission make changes to event My nodejs code is running on google cloud functions Here is my code:

const {
  google
} = require('googleapis');


var event = {
  'summary': 'Google I/O 2015',
  'location': '800 Howard St., San Francisco, CA 94103',
  'description': 'A chance to hear more about Google\'s developer products.',
  'start': {
    'dateTime': '2020-02-10T13:00:00-05:00'
  },
  'end': {
    'dateTime': '2020-02-10T15:00:00-05:00'
  },
  'attendees': [{
    'email': '[email protected]'
  }],
  'reminders': {
    'useDefault': false,
    'overrides': [{
        'method': 'email',
        'minutes': 24 * 60
      },
      {
        'method': 'popup',
        'minutes': 10
      },
    ],
  },
};

exports.helloWorld = (req, res) => {
  google.auth.getClient({
    scopes: 'https://www.googleapis.com/auth/calendar',
  }).then(auth => {
    const calendar = google.calendar({
      version: 'v3',
      auth
    });
    calendar.events.insert({
      auth: auth,
      calendarId: 'MyCalendarID',
      resources: event,
    }, function(err, event) {
      if (err) {
        console.log('There was an error contacting the Calendar service: ' + err);
        return;
      }
      console.log('Event created: %s', event.htmlLink);
    });
  })

};

the same code works fine when I use the function read. Any Idea ?

Answer 1

This is a known bug

There is an issue when adding attendees to an event with a Service Account.

The current workaround is to impersonate a user using G Suite Domain-wide Delegation. If you do so, you should be able to create the events with attendees.

Another option is to remove the attendees from the Event creation request.