Synnefo

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from django.db.models import Sum, Count

from synnefo.db.models import VirtualMachine, Network

from synnefo.quotas import Quotaholder, ASTAKOS_TOKEN

def get_db_holdings(user=None):

    """Get holdings from Cyclades DB."""

    holdings = {}

    vms = VirtualMachine.objects.filter(deleted=False)

    networks = Network.objects.filter(deleted=False)

    if user is not None:

        vms = vms.filter(userid=user)

        networks = networks.filter(userid=user)

    # Get resources related with VMs

    vm_resources = vms.values("userid").annotate(num=Count("id"),

                                                 ram=Sum("flavor__ram"),

                                                 cpu=Sum("flavor__cpu"),

                                                 disk=Sum("flavor__disk"))

    for vm_res in vm_resources:

        user = vm_res['userid']

        res = {"cyclades.vm": vm_res["num"],

               "cyclades.cpu": vm_res["cpu"],

               "cyclades.disk": 1073741824 * vm_res["disk"],

               "cyclades.ram": 1048576 * vm_res["ram"]}

        holdings[user] = res

    # Get resources related with networks

    net_resources = networks.values("userid")\

                            .annotate(num=Count("id"))

    for net_res in net_resources:

        user = net_res['userid']

        if user not in holdings:

            holdings[user] = {}

        holdings[user]["cyclades.network.private"] = net_res["num"]

    return holdings

def get_quotaholder_holdings(user=None):

    """Get quotas from Quotaholder for all Cyclades resources.

    Returns quotas for all users, unless a single user is specified.

    """

    qh = Quotaholder.get()

    return qh.service_get_quotas(ASTAKOS_TOKEN, user)

def transform_quotas(quotas):

    d = {}

    for resource, counters in quotas.iteritems():

        used = counters['usage']

        limit = counters['limit']

        pending = counters['pending']

        d[resource] = (used, limit, pending)

    return d