Synnefo

## Astakos groups that have access to '/admin' views.

#ADMIN_STATS_PERMITTED_GROUPS = ["admin-stats"]

#

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import itertools

import operator

import datetime

from collections import defaultdict  # , OrderedDict

from copy import copy

from django.conf import settings

from django.db.models import Count, Sum

from snf_django.lib.astakos import UserCache

from synnefo.db.models import VirtualMachine, Network, Backend

from synnefo.api.util import get_image

from synnefo.logic import backend as backend_mod

def get_cyclades_stats(backend=None, clusters=True, servers=True,

                       resources=True, networks=True, images=True):

    stats = {"datetime": datetime.datetime.now().strftime("%c")}

    if clusters:

        stats["clusters"] = get_cluster_stats(backend=backend)

    if servers:

        stats["servers"] = get_servers_stats(backend=backend)

    if resources:

        stats["resources"] = get_resources_stats(backend=backend)

    if networks:

        stats["networks"] = get_networks_stats()

    if images:

        stats["images"] = get_images_stats(backend=None)

    return stats

def get_cluster_stats(backend):

    total = Backend.objects.all()

    stats = {"total": total.count(),

             "drained": total.filter(drained=True).count(),

             "offline": total.filter(offline=True).count()}

    return stats

def _get_total_servers(backend=None):

    total_servers = VirtualMachine.objects.all()

    if backend is not None:

        total_servers = total_servers.filter(backend=backend)

    return total_servers

def get_servers_stats(backend=None):

    total_servers = _get_total_servers(backend=backend)

    per_state = total_servers.values("operstate")\

                             .annotate(count=Count("operstate"))

    stats = {"total": 0}

    [stats.setdefault(s[0], 0) for s in VirtualMachine.OPER_STATES]

    for x in per_state:

        stats[x["operstate"]] = x["count"]

        stats["total"] += x["count"]

    return stats

def get_resources_stats(backend=None):

    total_servers = _get_total_servers(backend=backend)

    active_servers = total_servers.filter(deleted=False)

    allocated = {}

    server_count = {}

    for res in ["cpu", "ram", "disk", "disk_template"]:

        server_count[res] = {}

        allocated[res] = 0

        val = "flavor__%s" % res

        results = active_servers.values(val).annotate(count=Count(val))

        for result in results:

            server_count[res][result[val]] = result["count"]

            if res != "disk_template":

                allocated[res] += result["count"]

    resources_stats = get_backend_stats(backend=backend)

    for res in ["cpu", "ram", "disk", "disk_template"]:

        if res not in resources_stats:

            resources_stats[res] = {}

        resources_stats[res]["servers"] = server_count[res]

        resources_stats[res]["allocated"] = allocated[res]

    return resources_stats

def get_images_stats(backend=None):

    total_servers = _get_total_servers(backend=backend)

    active_servers = total_servers.filter(deleted=False)

    active_servers_images = active_servers.values("imageid", "userid")\

                                          .annotate(number=Count("imageid"))

    image_cache = ImageCache()

    image_stats = defaultdict(int)

    for result in active_servers_images:

        imageid = image_cache.get_image(result["imageid"], result["userid"])

        image_stats[imageid] += result["number"]

    return dict(image_stats)

def get_networks_stats():

    total_networks = Network.objects.all()

    stats = {"public_ips": get_ip_stats(),

             "total": 0}

    per_state = total_networks.values("state")\

                              .annotate(count=Count("state"))

    [stats.setdefault(s[0], 0) for s in Network.OPER_STATES]

    for x in per_state:

        stats[x["state"]] = x["count"]

        stats["total"] += x["count"]

    return stats

def group_by_resource(objects, resource):

    stats = {}

    key = operator.attrgetter("flavor."+resource)

    grouped = itertools.groupby(sorted(objects, key=key), key)

    for val, group in grouped:

        stats[val] = len(list(group))

    return stats

def get_ip_stats():

    total, free = 0, 0,

    for network in Network.objects.filter(public=True, deleted=False):

        try:

            net_total, net_free = network.ip_count()

        except AttributeError:

            # TODO: Check that this works..

            pool = network.get_pool(locked=False)

            net_total = pool.pool_size

            net_free = pool.count_available()

        if not network.drained:

            total += net_total

            free += net_free

    return {"total": total,

            "free": free}

def get_backend_stats(backend=None):

    if backend is None:

        backends = Backend.objects.filter(offline=False)

    else:

        if backend.offline:

            return {}

        backends = [backend]

    [backend_mod.update_backend_resources(b) for b in backends]

    resources = {}

    for attr in ("dfree", "dtotal", "mfree", "mtotal", "ctotal"):

        resources[attr] = 0

        for b in backends:

            resources[attr] += getattr(b, attr)

    return {"disk": {"free": resources["dfree"], "total": resources["dtotal"]},

            "ram": {"free": resources["mfree"], "total": resources["mtotal"]},

            "cpu": {"free": resources["ctotal"], "total": resources["ctotal"]},

            "disk_template": {"free": 0, "total": 0}}

class ImageCache(object):

    def __init__(self):

        self.images = {}

        usercache = UserCache(settings.ASTAKOS_BASE_URL,

                              settings.CYCLADES_SERVICE_TOKEN)

        self.system_user_uuid = \

            usercache.get_uuid(settings.SYSTEM_IMAGES_OWNER)

    def get_image(self, imageid, userid):

        if not imageid in self.images:

            try:

                image = get_image(imageid, userid)

                owner = image["owner"]

                owner = "system" if image["owner"] == self.system_user_uuid\

                        else "user"

                self.images[imageid] = owner + ":" + image["name"]

            except Exception:

                self.images[imageid] = "unknown:unknown"

        return self.images[imageid]

def get_public_stats():

    # VirtualMachines

    vm_objects = VirtualMachine.objects

    servers = vm_objects.values("deleted", "operstate")\

                        .annotate(count=Count("id"),

                                  cpu=Sum("flavor__cpu"),

                                  ram=Sum("flavor__ram"),

                                  disk=Sum("flavor__disk"))

    zero_stats = {"count": 0, "cpu": 0, "ram": 0, "disk": 0}

    server_stats = {}

    for state in VirtualMachine.RSAPI_STATE_FROM_OPER_STATE.values():

        server_stats[state] = copy(zero_stats)

    for stats in servers:

        deleted = stats.pop("deleted")

        operstate = stats.pop("operstate")

        state = VirtualMachine.RSAPI_STATE_FROM_OPER_STATE.get(operstate)

        if deleted:

            for key in zero_stats.keys():

                server_stats["DELETED"][key] += stats.get(key, 0)

        elif state:

            for key in zero_stats.keys():

                server_stats[state][key] += stats.get(key, 0)

    #Networks

    net_objects = Network.objects

    networks = net_objects.values("deleted", "state")\

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

    zero_stats = {"count": 0}

    network_stats = {}

    for state in Network.RSAPI_STATE_FROM_OPER_STATE.values():

        network_stats[state] = copy(zero_stats)

    for stats in networks:

        deleted = stats.pop("deleted")

        state = stats.pop("state")

        state = Network.RSAPI_STATE_FROM_OPER_STATE.get(state)

        if deleted:

            for key in zero_stats.keys():

                network_stats["DELETED"][key] += stats.get(key, 0)

        elif state:

            for key in zero_stats.keys():

                network_stats[state][key] += stats.get(key, 0)

    statistics = {"servers": server_stats,

                  "networks": network_stats}

    return statistics

    url(r'^stats$', views.get_public_stats),

    url(r'^stats/detail$', views.get_cyclades_stats),

from django.conf import settings

from synnefo.admin import stats

logger = logging.getLogger(__name__)

                logger=logger, serializations=['json'])

def get_public_stats(request):

    _stats = stats.get_public_stats()

    data = json.dumps(_stats)

@api.api_method(http_method='GET', user_required=True, token_required=True,

                logger=logger, serializations=['json'])

@api.user_in_groups(permitted_groups=settings.ADMIN_STATS_PERMITTED_GROUPS,

                    logger=logger)

def get_cyclades_stats(request):

    _stats = stats.get_cyclades_stats(backend=None, clusters=True,

                                      servers=True, resources=True,

                                      networks=True, images=True)

    data = json.dumps(_stats)

    return http.HttpResponse(data, status=200, content_type='application/json')

# Astakos groups that have access to '/admin' views.

ADMIN_STATS_PERMITTED_GROUPS = ["admin-stats"]

from synnefo.admin import stats as statistics

        stats = statistics.get_cyclades_stats(backend, clusters, servers,

                                              resources, networks, images)

    _datetime = stats.get("datetime")

    stdout.write("datetime: %s\n" % _datetime)

        @wraps(func)

def user_in_groups(permitted_groups, logger=None):

    """Check that the request user belongs to one of permitted groups.

    Django view wrapper to check that the already identified request user

    belongs to one of the allowed groups.

    """

    if not logger:

        logger = log

    def decorator(func):

        @wraps(func)

        def wrapper(request, *args, **kwargs):

            if hasattr(request, "user") and request.user is not None:

                groups = request.user["access"]["user"]["roles"]

                groups = [g["name"] for g in groups]

            else:

                raise faults.Forbidden

            common_groups = set(groups) & set(permitted_groups)

            if not common_groups:

                msg = ("Not allowing access to '%s' by user '%s'. User does"

                       " not belong to a valid group. User groups: %s,"

                       " Required groups %s"

                       % (request.path, request.user, groups,

                          permitted_groups))

                logger.error(msg)

                raise faults.Forbidden

            logger.info("User '%s' in groups '%s' accessed view '%s'",

                        request.user_uniq, groups, request.path)

            return func(request, *args, **kwargs)

        return wrapper

    return decorator