def lambda_handler()

in aws/hhvm1/lambdas/health_check.py [0:0]

• 13 lines of code
• 8 McCabe index (conditional complexity)

def lambda_handler(event, context=None):
  if skip_ec2(event):
    # Nothing to check if this is a test run with no EC2 -- quit (and don't
    # repeat).
    return False

  events = all_execution_events(event['execution'])

  # Quit (and don't repeat) if we've reached the end state.
  for e in events:
    if e.get('stateEnteredEventDetails', {}).get('name') == event['endState']:
      return False

  # The actual health check: Find any activities that are scheduled but not
  # started and make sure there's a worker ready for each.
  ec2 = boto3.client('ec2')
  for activity_class in get_pending_activities(events):
    activity = activity_class(event)
    if activity.needs_ec2_worker():
      ec2.run_instances(**activity.ec2_params())

  # Wait and repeat.
  return True