Synnefo

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from synnefo.db.models import Backend

from snf_django.management.commands import ListCommand

from synnefo.api import util

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 network in util.backend_public_networks(backend):

            pool = network.get_pool(with_lock=False)

            free_ips += pool.count_available()

            total_ips += pool.pool_size

        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)"),

        "hypervisor": ("hypervisor", "The hypervisor the backend is using"),

        "disk_templates": ("disk_templates", "Enabled disk-templates"),

    }

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

              "vms", "hypervisor", "ips", "disk_templates"]