Source code for openstack_dashboard.usage.quotas

# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

from collections import defaultdict
import itertools
import logging

from django.utils.translation import ugettext_lazy as _

from horizon import exceptions
from horizon.utils.memoized import memoized  # noqa

from openstack_dashboard.api import base
from openstack_dashboard.api import cinder
from openstack_dashboard.api import network
from openstack_dashboard.api import neutron
from openstack_dashboard.api import nova
from openstack_dashboard import policy


LOG = logging.getLogger(__name__)


NOVA_QUOTA_FIELDS = ("metadata_items",
                     "cores",
                     "instances",
                     "injected_files",
                     "injected_file_content_bytes",
                     "ram",
                     "floating_ips",
                     "fixed_ips",
                     "security_groups",
                     "security_group_rules",)

MISSING_QUOTA_FIELDS = ("key_pairs",
                        "injected_file_path_bytes",)

CINDER_QUOTA_FIELDS = ("volumes",
                       "snapshots",
                       "gigabytes",)

NEUTRON_QUOTA_FIELDS = ("network",
                        "subnet",
                        "port",
                        "router",
                        "floatingip",
                        "security_group",
                        "security_group_rule",
                        )

QUOTA_FIELDS = NOVA_QUOTA_FIELDS + CINDER_QUOTA_FIELDS + NEUTRON_QUOTA_FIELDS

QUOTA_NAMES = {
    "metadata_items": _('Metadata Items'),
    "cores": _('VCPUs'),
    "instances": _('Instances'),
    "injected_files": _('Injected Files'),
    "injected_file_content_bytes": _('Injected File Content Bytes'),
    "ram": _('RAM (MB)'),
    "floating_ips": _('Floating IPs'),
    "fixed_ips": _('Fixed IPs'),
    "security_groups": _('Security Groups'),
    "security_group_rules": _('Security Group Rules'),
    "key_pairs": _('Key Pairs'),
    "injected_file_path_bytes": _('Injected File Path Bytes'),
    "volumes": _('Volumes'),
    "snapshots": _('Volume Snapshots'),
    "gigabytes": _('Total Size of Volumes and Snapshots (GB)'),
    "network": _("Networks"),
    "subnet": _("Subnets"),
    "port": _("Ports"),
    "router": _("Routers"),
    "floatingip": _('Floating IPs'),
    "security_group": _("Security Groups"),
    "security_group_rule": _("Security Group Rules")
}


[docs]class QuotaUsage(dict): """Tracks quota limit, used, and available for a given set of quotas.""" def __init__(self): self.usages = defaultdict(dict) def __contains__(self, key): return key in self.usages def __getitem__(self, key): return self.usages[key] def __setitem__(self, key, value): raise NotImplementedError("Directly setting QuotaUsage values is not " "supported. Please use the add_quota and " "tally methods.") def __repr__(self): return repr(dict(self.usages))
[docs] def get(self, key, default=None): return self.usages.get(key, default)
[docs] def add_quota(self, quota): """Adds an internal tracking reference for the given quota.""" if quota.limit is None or quota.limit == -1: # Handle "unlimited" quotas. self.usages[quota.name]['quota'] = float("inf") self.usages[quota.name]['available'] = float("inf") else: self.usages[quota.name]['quota'] = int(quota.limit)
[docs] def tally(self, name, value): """Adds to the "used" metric for the given quota.""" value = value or 0 # Protection against None. # Start at 0 if this is the first value. if 'used' not in self.usages[name]: self.usages[name]['used'] = 0 # Increment our usage and update the "available" metric. self.usages[name]['used'] += int(value) # Fail if can't coerce to int. self.update_available(name)
[docs] def update_available(self, name): """Updates the "available" metric for the given quota.""" quota = self.usages.get(name, {}).get('quota', float('inf')) available = quota - self.usages[name]['used'] if available < 0: available = 0 self.usages[name]['available'] = available
def _get_quota_data(request, method_name, disabled_quotas=None, tenant_id=None): quotasets = [] if not tenant_id: tenant_id = request.user.tenant_id if disabled_quotas is None: disabled_quotas = get_disabled_quotas(request) qs = base.QuotaSet() if 'instances' not in disabled_quotas: quotasets.append(getattr(nova, method_name)(request, tenant_id)) if 'volumes' not in disabled_quotas: try: quotasets.append(getattr(cinder, method_name)(request, tenant_id)) except cinder.cinder_exception.ClientException: disabled_quotas.update(CINDER_QUOTA_FIELDS) msg = _("Unable to retrieve volume limit information.") exceptions.handle(request, msg) for quota in itertools.chain(*quotasets): if quota.name not in disabled_quotas: qs[quota.name] = quota.limit return qs
[docs]def get_default_quota_data(request, disabled_quotas=None, tenant_id=None): return _get_quota_data(request, "default_quota_get", disabled_quotas=disabled_quotas, tenant_id=tenant_id)
[docs]def get_tenant_quota_data(request, disabled_quotas=None, tenant_id=None): qs = _get_quota_data(request, "tenant_quota_get", disabled_quotas=disabled_quotas, tenant_id=tenant_id) # TODO(jpichon): There is no API to get the default system quotas # in Neutron (cf. LP#1204956), so for now handle tenant quotas here. # This should be handled in _get_quota_data() eventually. if not disabled_quotas: return qs # Check if neutron is enabled by looking for network and router if 'network' and 'router' not in disabled_quotas: tenant_id = tenant_id or request.user.tenant_id neutron_quotas = neutron.tenant_quota_get(request, tenant_id) if 'floating_ips' in disabled_quotas: # Neutron with quota extension disabled if 'floatingip' in disabled_quotas: qs.add(base.QuotaSet({'floating_ips': -1})) # Neutron with quota extension enabled else: # Rename floatingip to floating_ips since that's how it's # expected in some places (e.g. Security & Access' Floating IPs) fips_quota = neutron_quotas.get('floatingip').limit qs.add(base.QuotaSet({'floating_ips': fips_quota})) if 'security_groups' in disabled_quotas: if 'security_group' in disabled_quotas: qs.add(base.QuotaSet({'security_groups': -1})) # Neutron with quota extension enabled else: # Rename security_group to security_groups since that's how it's # expected in some places (e.g. Security & Access' Security Groups) sec_quota = neutron_quotas.get('security_group').limit qs.add(base.QuotaSet({'security_groups': sec_quota})) if 'network' in disabled_quotas: for item in qs.items: if item.name == 'networks': qs.items.remove(item) break else: net_quota = neutron_quotas.get('network').limit qs.add(base.QuotaSet({'networks': net_quota})) if 'subnet' in disabled_quotas: for item in qs.items: if item.name == 'subnets': qs.items.remove(item) break else: net_quota = neutron_quotas.get('subnet').limit qs.add(base.QuotaSet({'subnets': net_quota})) if 'router' in disabled_quotas: for item in qs.items: if item.name == 'routers': qs.items.remove(item) break else: router_quota = neutron_quotas.get('router').limit qs.add(base.QuotaSet({'routers': router_quota})) return qs
[docs]def get_disabled_quotas(request): disabled_quotas = set([]) # Cinder if not cinder.is_volume_service_enabled(request): disabled_quotas.update(CINDER_QUOTA_FIELDS) # Neutron if not base.is_service_enabled(request, 'network'): disabled_quotas.update(NEUTRON_QUOTA_FIELDS) else: # Remove the nova network quotas disabled_quotas.update(['floating_ips', 'fixed_ips']) if neutron.is_extension_supported(request, 'security-group'): # If Neutron security group is supported, disable Nova quotas disabled_quotas.update(['security_groups', 'security_group_rules']) else: # If Nova security group is used, disable Neutron quotas disabled_quotas.update(['security_group', 'security_group_rule']) try: if not neutron.is_quotas_extension_supported(request): disabled_quotas.update(NEUTRON_QUOTA_FIELDS) except Exception: LOG.exception("There was an error checking if the Neutron " "quotas extension is enabled.") # Nova if not (base.is_service_enabled(request, 'compute') and nova.can_set_quotas()): disabled_quotas.update(NOVA_QUOTA_FIELDS) # The 'missing' quota fields are all nova (this is hardcoded in # dashboards.admin.defaults.workflows) disabled_quotas.update(MISSING_QUOTA_FIELDS) # There appear to be no glance quota fields currently return disabled_quotas
def _get_tenant_compute_usages(request, usages, disabled_quotas, tenant_id): # Unlike the other services it can be the case that nova is enabled but # doesn't support quotas, in which case we still want to get usage info, # so don't rely on '"instances" in disabled_quotas' as elsewhere if not base.is_service_enabled(request, 'compute'): return if tenant_id: # determine if the user has permission to view across projects # there are cases where an administrator wants to check the quotas # on a project they are not scoped to all_tenants = policy.check((("compute", "compute:get_all_tenants"),), request) instances, has_more = nova.server_list( request, search_opts={'tenant_id': tenant_id}, all_tenants=all_tenants) else: instances, has_more = nova.server_list(request) # Fetch deleted flavors if necessary. flavors = dict([(f.id, f) for f in nova.flavor_list(request)]) missing_flavors = [instance.flavor['id'] for instance in instances if instance.flavor['id'] not in flavors] for missing in missing_flavors: if missing not in flavors: try: flavors[missing] = nova.flavor_get(request, missing) except Exception: flavors[missing] = {} exceptions.handle(request, ignore=True) usages.tally('instances', len(instances)) # Sum our usage based on the flavors of the instances. for flavor in [flavors[instance.flavor['id']] for instance in instances]: usages.tally('cores', getattr(flavor, 'vcpus', None)) usages.tally('ram', getattr(flavor, 'ram', None)) # Initialize the tally if no instances have been launched yet if len(instances) == 0: usages.tally('cores', 0) usages.tally('ram', 0) def _get_tenant_network_usages(request, usages, disabled_quotas, tenant_id): floating_ips = [] try: if network.floating_ip_supported(request): floating_ips = network.tenant_floating_ip_list(request) except Exception: pass usages.tally('floating_ips', len(floating_ips)) if 'security_group' not in disabled_quotas: security_groups = [] security_groups = network.security_group_list(request) usages.tally('security_groups', len(security_groups)) if 'network' not in disabled_quotas: networks = [] networks = neutron.network_list(request, shared=False) if tenant_id: networks = [net for net in networks if net.tenant_id == tenant_id] usages.tally('networks', len(networks)) # get shared networks shared_networks = neutron.network_list(request, shared=True) if tenant_id: shared_networks = [net for net in shared_networks if net.tenant_id == tenant_id] usages.tally('networks', len(shared_networks)) if 'subnet' not in disabled_quotas: subnets = neutron.subnet_list(request, shared=False) if tenant_id: subnets = [sub for sub in subnets if sub.tenant_id == tenant_id] # get shared subnets shared_subnets = neutron.subnet_list(request, shared=True) if tenant_id: shared_subnets = [subnet for subnet in shared_subnets if subnet.tenant_id == tenant_id] usages.tally('subnets', len(subnets) + len(shared_subnets)) if 'router' not in disabled_quotas: routers = [] routers = neutron.router_list(request) if tenant_id: routers = [rou for rou in routers if rou.tenant_id == tenant_id] usages.tally('routers', len(routers)) def _get_tenant_volume_usages(request, usages, disabled_quotas, tenant_id): if 'volumes' not in disabled_quotas: try: if tenant_id: opts = {'all_tenants': 1, 'project_id': tenant_id} volumes = cinder.volume_list(request, opts) snapshots = cinder.volume_snapshot_list(request, opts) else: volumes = cinder.volume_list(request) snapshots = cinder.volume_snapshot_list(request) usages.tally('gigabytes', sum([int(v.size) for v in volumes])) usages.tally('volumes', len(volumes)) usages.tally('snapshots', len(snapshots)) except cinder.cinder_exception.ClientException: msg = _("Unable to retrieve volume limit information.") exceptions.handle(request, msg) @memoized
[docs]def tenant_quota_usages(request, tenant_id=None): """Get our quotas and construct our usage object. If no tenant_id is provided, a the request.user.project_id is assumed to be used """ if not tenant_id: tenant_id = request.user.project_id disabled_quotas = get_disabled_quotas(request) usages = QuotaUsage() for quota in get_tenant_quota_data(request, disabled_quotas=disabled_quotas, tenant_id=tenant_id): usages.add_quota(quota) # Get our usages. _get_tenant_compute_usages(request, usages, disabled_quotas, tenant_id) _get_tenant_network_usages(request, usages, disabled_quotas, tenant_id) _get_tenant_volume_usages(request, usages, disabled_quotas, tenant_id) return usages
[docs]def tenant_limit_usages(request): # TODO(licostan): This method shall be removed from Quota module. # ProjectUsage/BaseUsage maybe used instead on volume/image dashboards. limits = {} try: if base.is_service_enabled(request, 'compute'): limits.update(nova.tenant_absolute_limits(request, reserved=True)) except Exception: msg = _("Unable to retrieve compute limit information.") exceptions.handle(request, msg) if cinder.is_volume_service_enabled(request): try: limits.update(cinder.tenant_absolute_limits(request)) volumes = cinder.volume_list(request) snapshots = cinder.volume_snapshot_list(request) # gigabytesUsed should be a total of volumes and snapshots vol_size = sum([getattr(volume, 'size', 0) for volume in volumes]) snap_size = sum([getattr(snap, 'size', 0) for snap in snapshots]) limits['gigabytesUsed'] = vol_size + snap_size limits['volumesUsed'] = len(volumes) limits['snapshotsUsed'] = len(snapshots) except cinder.cinder_exception.ClientException: msg = _("Unable to retrieve volume limit information.") exceptions.handle(request, msg) return limits
[docs]def enabled_quotas(request): """Returns the list of quotas available minus those that are disabled""" return set(QUOTA_FIELDS) - get_disabled_quotas(request)

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