d7054053ae
The word "Copyright" alone is sufficient to claim copyright, the (c) symbol need not be present.[1] As per PEP 263, a Python file with non-ASCII characters must have a line with "coding: <some-encoding>". Python files containing only 7-bit ASCII characters need no such line.[2] This commit removes unnecessary Unicode copyright symbols and unnecessary encoding lines. [1]: http://www.copyright.gov/circs/circ03.pdf [2]: http://legacy.python.org/dev/peps/pep-0263/ Closes-Bug: #1324686 Change-Id: Id381ea1f029a0cfddd3773c6d9f16c47842d9c33
232 lines
7.2 KiB
Python
232 lines
7.2 KiB
Python
#
|
|
# Copyright 2012 Red Hat, Inc
|
|
#
|
|
# Author: Eoghan Glynn <eglynn@redhat.com>
|
|
# Doug Hellmann <doug.hellmann@dreamhost.com>
|
|
#
|
|
# 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.
|
|
"""Inspector abstraction for read-only access to hypervisors."""
|
|
|
|
import collections
|
|
|
|
from oslo.config import cfg
|
|
from stevedore import driver
|
|
|
|
from ceilometer.openstack.common.gettextutils import _
|
|
from ceilometer.openstack.common import log
|
|
|
|
|
|
OPTS = [
|
|
cfg.StrOpt('hypervisor_inspector',
|
|
default='libvirt',
|
|
help='Inspector to use for inspecting the hypervisor layer.'),
|
|
]
|
|
|
|
cfg.CONF.register_opts(OPTS)
|
|
|
|
|
|
LOG = log.getLogger(__name__)
|
|
|
|
# Named tuple representing instances.
|
|
#
|
|
# name: the name of the instance
|
|
# uuid: the UUID associated with the instance
|
|
#
|
|
Instance = collections.namedtuple('Instance', ['name', 'UUID'])
|
|
|
|
|
|
# Named tuple representing CPU statistics.
|
|
#
|
|
# number: number of CPUs
|
|
# time: cumulative CPU time
|
|
#
|
|
CPUStats = collections.namedtuple('CPUStats', ['number', 'time'])
|
|
|
|
# Named tuple representing CPU Utilization statistics.
|
|
#
|
|
# util: CPU utilization in percentage
|
|
#
|
|
CPUUtilStats = collections.namedtuple('CPUUtilStats', ['util'])
|
|
|
|
# Named tuple representing Memory usage statistics.
|
|
#
|
|
# usage: Amount of memory used
|
|
#
|
|
MemoryUsageStats = collections.namedtuple('MemoryUsageStats', ['usage'])
|
|
|
|
|
|
# Named tuple representing vNICs.
|
|
#
|
|
# name: the name of the vNIC
|
|
# mac: the MAC address
|
|
# fref: the filter ref
|
|
# parameters: miscellaneous parameters
|
|
#
|
|
Interface = collections.namedtuple('Interface', ['name', 'mac',
|
|
'fref', 'parameters'])
|
|
|
|
|
|
# Named tuple representing vNIC statistics.
|
|
#
|
|
# rx_bytes: number of received bytes
|
|
# rx_packets: number of received packets
|
|
# tx_bytes: number of transmitted bytes
|
|
# tx_packets: number of transmitted packets
|
|
#
|
|
InterfaceStats = collections.namedtuple('InterfaceStats',
|
|
['rx_bytes', 'rx_packets',
|
|
'tx_bytes', 'tx_packets'])
|
|
|
|
|
|
# Named tuple representing vNIC rate statistics.
|
|
#
|
|
# rx_bytes_rate: rate of received bytes
|
|
# tx_bytes_rate: rate of transmitted bytes
|
|
#
|
|
InterfaceRateStats = collections.namedtuple('InterfaceRateStats',
|
|
['rx_bytes_rate', 'tx_bytes_rate'])
|
|
|
|
|
|
# Named tuple representing disks.
|
|
#
|
|
# device: the device name for the disk
|
|
#
|
|
Disk = collections.namedtuple('Disk', ['device'])
|
|
|
|
|
|
# Named tuple representing disk statistics.
|
|
#
|
|
# read_bytes: number of bytes read
|
|
# read_requests: number of read operations
|
|
# write_bytes: number of bytes written
|
|
# write_requests: number of write operations
|
|
# errors: number of errors
|
|
#
|
|
DiskStats = collections.namedtuple('DiskStats',
|
|
['read_bytes', 'read_requests',
|
|
'write_bytes', 'write_requests',
|
|
'errors'])
|
|
|
|
# Named tuple representing disk rate statistics.
|
|
#
|
|
# read_bytes_rate: number of bytes read per second
|
|
# read_requests_rate: number of read operations per second
|
|
# write_bytes_rate: number of bytes written per second
|
|
# write_requests_rate: number of write operations per second
|
|
#
|
|
DiskRateStats = collections.namedtuple('DiskRateStats',
|
|
['read_bytes_rate',
|
|
'read_requests_rate',
|
|
'write_bytes_rate',
|
|
'write_requests_rate'])
|
|
|
|
|
|
# Exception types
|
|
#
|
|
class InspectorException(Exception):
|
|
def __init__(self, message=None):
|
|
super(InspectorException, self).__init__(message)
|
|
|
|
|
|
class InstanceNotFoundException(InspectorException):
|
|
pass
|
|
|
|
|
|
# Main virt inspector abstraction layering over the hypervisor API.
|
|
#
|
|
class Inspector(object):
|
|
|
|
def inspect_instances(self):
|
|
"""List the instances on the current host."""
|
|
raise NotImplementedError()
|
|
|
|
def inspect_cpus(self, instance_name):
|
|
"""Inspect the CPU statistics for an instance.
|
|
|
|
:param instance_name: the name of the target instance
|
|
:return: the number of CPUs and cumulative CPU time
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def inspect_cpu_util(self, instance, duration=None):
|
|
"""Inspect the CPU Utilization (%) for an instance.
|
|
|
|
:param instance: the target instance
|
|
:param duration: the last 'n' seconds, over which the value should be
|
|
inspected
|
|
:return: the percentage of CPU utilization
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def inspect_vnics(self, instance_name):
|
|
"""Inspect the vNIC statistics for an instance.
|
|
|
|
:param instance_name: the name of the target instance
|
|
:return: for each vNIC, the number of bytes & packets
|
|
received and transmitted
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def inspect_vnic_rates(self, instance, duration=None):
|
|
"""Inspect the vNIC rate statistics for an instance.
|
|
|
|
:param instance: the target instance
|
|
:param duration: the last 'n' seconds, over which the value should be
|
|
inspected
|
|
:return: for each vNIC, the rate of bytes & packets
|
|
received and transmitted
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def inspect_disks(self, instance_name):
|
|
"""Inspect the disk statistics for an instance.
|
|
|
|
:param instance_name: the name of the target instance
|
|
:return: for each disk, the number of bytes & operations
|
|
read and written, and the error count
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def inspect_memory_usage(self, instance, duration=None):
|
|
"""Inspect the memory usage statistics for an instance.
|
|
|
|
:param instance: the target instance
|
|
:param duration: the last 'n' seconds, over which the value should be
|
|
inspected
|
|
:return: the amount of memory used
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
def inspect_disk_rates(self, instance, duration=None):
|
|
"""Inspect the disk statistics as rates for an instance.
|
|
|
|
:param instance: the target instance
|
|
:param duration: the last 'n' seconds, over which the value should be
|
|
inspected
|
|
:return: for each disk, the number of bytes & operations
|
|
read and written per second, with the error count
|
|
"""
|
|
raise NotImplementedError()
|
|
|
|
|
|
def get_hypervisor_inspector():
|
|
try:
|
|
namespace = 'ceilometer.compute.virt'
|
|
mgr = driver.DriverManager(namespace,
|
|
cfg.CONF.hypervisor_inspector,
|
|
invoke_on_load=True)
|
|
return mgr.driver
|
|
except ImportError as e:
|
|
LOG.error(_("Unable to load the hypervisor inspector: %s") % (e))
|
|
return Inspector()
|