Function inst_graph

instances/views.py:524–631

:param request: :return:

(request, compute_id, vname)

def inst_graph(request, compute_id, vname):
    """
    :param request:
    :return:
    """

    if not request.user.is_authenticated():
        return HttpResponseRedirect(reverse('login'))

    datasets = {}
    json_blk = []
    datasets_blk = {}
    json_net = []
    datasets_net = {}
    cookies = {}
    points = 5
    curent_time = time.strftime("%H:%M:%S")
    compute = get_object_or_404(Compute, pk=compute_id)
    response = HttpResponse()
    response['Content-Type'] = "text/javascript"

    def check_points(dataset):
        if len(dataset) > points:
            dataset.pop(0)
        return dataset

    try:
        conn = wvmInstance(compute.hostname,
                           compute.login,
                           compute.password,
                           compute.type,
                           vname)
        cpu_usage = conn.cpu_usage()
        blk_usage = conn.disk_usage()
        net_usage = conn.net_usage()
        conn.close()

        try:
            cookies['cpu'] = request.COOKIES['cpu']
            cookies['blk'] = request.COOKIES['blk']
            cookies['net'] = request.COOKIES['net']
            cookies['timer'] = request.COOKIES['timer']
        except KeyError:
            cookies['cpu'] = None
            cookies['blk'] = None
            cookies['net'] = None

        if not cookies['cpu']:
            datasets['cpu'] = [0] * points
            datasets['timer'] = [0] * points
        else:
            datasets['cpu'] = eval(cookies['cpu'])
            datasets['timer'] = eval(cookies['timer'])

        datasets['timer'].append(curent_time)
        datasets['cpu'].append(int(cpu_usage['cpu']))

        datasets['timer'] = check_points(datasets['timer'])