Synnefo

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from synnefo.db.models import Backend, IPPoolTable

from synnefo.webproject.management.commands import ListCommand

class Command(ListCommand):

    help = "List Ganeti backends"

    object_class = Backend

    def get_vms(backend):

        return backend.virtual_machines.filter(deleted=False).count()

    def get_mem(backend):

        return "%s/%s" % (backend.mfree, backend.mtotal)

    def get_disk(backend):

        return "%s/%s" % (backend.dfree, backend.dtotal)

    def get_ips(backend):

        free_ips = 0

        total_ips = 0

        for bnet in backend.networks.filter(deleted=False,

                                            network__public=True,

                                            network__deleted=False):

            network = bnet.network

            try:

                pool = IPPoolTable.objects.get(id=network.pool_id).pool

                free_ips += pool.count_available()

                total_ips += pool.pool_size

            except IPPoolTable.DoesNotExist:

                pass

        return "%s/%s" % (free_ips, total_ips)

    FIELDS = {

        "id": ("id", "Backend's unique ID"),

        "clustername": ("clustername", "The name of the Ganeti cluster"),

        "port": ("port", ""),

        "username": ("username", "The RAPI user"),

        "drained": ("drained", "Whether backend is marked as drained"),

        "offline": ("offline", "Whether backend if marked as offline"),

        "vms": (get_vms, "Number of VMs that this backend hosts"),

        "ips": (get_ips, "free/total number of public IPs"),

        "mem": (get_mem, "free/total memory (MB)"),

        "disk": (get_mem, "free/total disk (GB)"),

    }

    fields = ["id", "clustername", "port", "username", "drained", "offline",

              "vms", "ips"]