208 lines
7.9 KiB
Python
208 lines
7.9 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Copyright © 2012 eNovance <licensing@enovance.com>
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#
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# Author: Julien Danjou <julien@danjou.info>
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import copy
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from lxml import etree
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from nova import flags
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from ceilometer import counter
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from ceilometer.compute import plugin
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from ceilometer.compute import instance as compute_instance
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from ceilometer.openstack.common import importutils
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from ceilometer.openstack.common import log
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from ceilometer.openstack.common import timeutils
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FLAGS = flags.FLAGS
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MIB = 2 ** 20 # mebibytes
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def get_libvirt_connection():
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"""Return an open connection for talking to libvirt."""
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# The direct-import implementation only works with Folsom because
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# the configuration setting changed.
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try:
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return importutils.import_object_ns('nova.virt',
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FLAGS.compute_driver)
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except ImportError:
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# Fall back to the way it was done in Essex.
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import nova.virt.connection
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return nova.virt.connection.get_connection(read_only=True)
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def make_counter_from_instance(instance, name, type, volume):
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return counter.Counter(
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source='?',
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name=name,
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type=type,
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volume=volume,
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user_id=instance.user_id,
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project_id=instance.project_id,
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resource_id=instance.uuid,
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timestamp=timeutils.isotime(),
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duration=None,
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resource_metadata=compute_instance.get_metadata_from_dbobject(
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instance),
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)
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def make_vnic_counter(instance, name, type, volume, vnic_data):
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resource_metadata = copy.copy(vnic_data)
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resource_metadata['instance_id'] = instance.id
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return counter.Counter(
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source='?',
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name=name,
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type=type,
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volume=volume,
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user_id=instance.user_id,
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project_id=instance.project_id,
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resource_id=vnic_data['fref'],
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timestamp=timeutils.isotime(),
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duration=None,
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resource_metadata=resource_metadata
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)
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class DiskIOPollster(plugin.ComputePollster):
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LOG = log.getLogger(__name__ + '.diskio')
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DISKIO_USAGE_MESSAGE = ' '.join(["DISKIO USAGE:",
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"%s %s:",
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"read-requests=%d",
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"read-bytes=%d",
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"write-requests=%d",
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"write-bytes=%d",
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"errors=%d",
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])
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def _get_disks(self, conn, instance):
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"""Get disks of an instance, only used to bypass bug#998089."""
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domain = conn._conn.lookupByName(instance)
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tree = etree.fromstring(domain.XMLDesc(0))
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return filter(bool,
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[target.get('dev')
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for target in tree.findall('devices/disk/target')
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])
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def get_counters(self, manager, instance):
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if FLAGS.compute_driver == 'libvirt.LibvirtDriver':
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conn = get_libvirt_connection()
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# TODO(jd) This does not work see bug#998089
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# for disk in conn.get_disks(instance.name):
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try:
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disks = self._get_disks(conn, instance.name)
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except Exception as err:
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self.LOG.warning('Ignoring instance %s: %s',
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instance.name, err)
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self.LOG.exception(err)
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else:
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bytes = 0
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for disk in disks:
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stats = conn.block_stats(instance.name, disk)
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self.LOG.info(self.DISKIO_USAGE_MESSAGE,
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instance, disk, stats[0], stats[1],
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stats[2], stats[3], stats[4])
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bytes += stats[1] + stats[3] # combine read and write
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yield make_counter_from_instance(instance,
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name='disk',
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type='cumulative',
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volume=bytes / MIB,
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)
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class CPUPollster(plugin.ComputePollster):
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LOG = log.getLogger(__name__ + '.cpu')
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def get_counters(self, manager, instance):
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conn = get_libvirt_connection()
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self.LOG.info('checking instance %s', instance.uuid)
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try:
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cpu_info = conn.get_info(instance)
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self.LOG.info("CPUTIME USAGE: %s %d",
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instance, cpu_info['cpu_time'])
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yield make_counter_from_instance(instance,
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name='cpu',
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type='cumulative',
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volume=cpu_info['cpu_time'],
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)
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yield make_counter_from_instance(instance,
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name='instance',
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type='cumulative',
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volume=1,
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)
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except Exception as err:
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self.LOG.error('could not get CPU time for %s: %s',
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instance.uuid, err)
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self.LOG.exception(err)
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class NetPollster(plugin.ComputePollster):
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LOG = log.getLogger(__name__ + '.net')
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NET_USAGE_MESSAGE = ' '.join(["NETWORK USAGE:", "%s %s:", "read-bytes=%d",
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"write-bytes=%d"])
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def _get_vnics(self, conn, instance):
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"""Get disks of an instance, only used to bypass bug#998089."""
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domain = conn._conn.lookupByName(instance.name)
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tree = etree.fromstring(domain.XMLDesc(0))
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vnics = []
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for interface in tree.findall('devices/interface'):
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vnic = {}
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vnic['name'] = interface.find('target').get('dev')
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vnic['mac'] = interface.find('mac').get('address')
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vnic['fref'] = interface.find('filterref').get('filter')
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for param in interface.findall('filterref/parameter'):
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vnic[param.get('name').lower()] = param.get('value')
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vnics.append(vnic)
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return vnics
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def get_counters(self, manager, instance):
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conn = get_libvirt_connection()
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self.LOG.info('checking instance %s', instance.uuid)
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try:
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vnics = self._get_vnics(conn, instance)
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except Exception as err:
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self.LOG.warning('Ignoring instance %s: %s',
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instance.name, err)
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self.LOG.exception(err)
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else:
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domain = conn._conn.lookupByName(instance.name)
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for vnic in vnics:
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rx, _, _, _, tx, _, _, _ = domain.interfaceStats(vnic['name'])
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self.LOG.info(self.NET_USAGE_MESSAGE, instance.name,
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vnic['name'], rx, tx)
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yield make_vnic_counter(instance,
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name='net_in_int',
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type='cumulative',
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volume=rx,
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vnic_data=vnic
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)
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yield make_vnic_counter(instance,
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name='net_out_int',
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type='cumulative',
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volume=tx,
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vnic_data=vnic
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)
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