#!/usr/bin/python2

# Copyright 2015 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""Counts the number of jobs created in the last 24 hours."""

import argparse
from datetime import datetime, timedelta
import sys

import common
from autotest_lib.frontend import setup_django_environment
from autotest_lib.frontend.afe import models
from autotest_lib.server import site_utils

try:
    from chromite.lib import metrics
except ImportError:
    metrics = site_utils.metrics_mock


def number_of_jobs_since(delta):
    """Returns the number of jobs kicked off in the last |duration| minutes.

    @param delta: A timedelta which indicates the maximum age of the jobs to count
    """
    cutoff = datetime.now() - delta
    return models.Job.objects.filter(created_on__gt=cutoff).count()


def main():
    """Counts the number of AFE jobs in the last day and report to monarch."""
    parser = argparse.ArgumentParser(
        description=('A script which records the number of afe jobs run in a time interval.'))
    parser.parse_args(sys.argv[1:])
    count = number_of_jobs_since(timedelta(days=1))

    with site_utils.SetupTsMonGlobalState('count_jobs', short_lived=True):
        # TODO: Reporting a stat for each job created from the afe directly could be better.
        # More discussions are needed to decide whether to remove this file.
        metrics.Gauge('chromeos/autotest/experimental/jobs_rate/afe_daily_count').set(count)


if __name__ == '__main__':
    main()