Function compute_graph

computes/views.py:163–225

:param request: :return:

(request, compute_id)

def compute_graph(request, compute_id):
    """
    :param request:
    :return:
    """

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

    points = 5
    datasets = {}
    cookies = {}
    compute = get_object_or_404(Compute, pk=compute_id)
    curent_time = time.strftime("%H:%M:%S")

    try:
        conn = wvmHostDetails(compute.hostname,
                              compute.login,
                              compute.password,
                              compute.type)
        cpu_usage = conn.get_cpu_usage()
        mem_usage = conn.get_memory_usage()
        conn.close()
    except libvirtError:
        cpu_usage = 0
        mem_usage = 0

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

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

    datasets['timer'].append(curent_time)
    datasets['cpu'].append(int(cpu_usage['usage']))
    datasets['mem'].append(int(mem_usage['usage']) / 1048576)

    if len(datasets['timer']) > points:
        datasets['timer'].pop(0)
    if len(datasets['cpu']) > points:
        datasets['cpu'].pop(0)
    if len(datasets['mem']) > points:
        datasets['mem'].pop(0)

    data = json.dumps({'cpudata': datasets['cpu'], 'memdata': datasets['mem'], 'timeline': datasets['timer']})
    response = HttpResponse()
    response['Content-Type'] = "text/javascript"