162 lines
6.5 KiB
Python
162 lines
6.5 KiB
Python
# Copyright 2016 Red Hat, Inc.
|
|
# All Rights Reserved.
|
|
#
|
|
# 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 operator import itemgetter
|
|
|
|
from config_tempest import constants as C
|
|
|
|
|
|
class Flavors(object):
|
|
def __init__(self, client, allow_creation, conf, min_memory, min_disk,
|
|
no_rng=False):
|
|
"""Init.
|
|
|
|
:type client: FlavorsClient object from tempest lib
|
|
:type allow_creation: boolean
|
|
:type conf: TempestConf object
|
|
"""
|
|
self.client = client
|
|
self.allow_creation = allow_creation
|
|
self._conf = conf
|
|
self.flavor_list = self.client.list_flavors()['flavors']
|
|
min_memory_alt = C.DEFAULT_FLAVOR_RAM_ALT
|
|
name = 'm1.nano'
|
|
name_alt = 'm1.micro'
|
|
if min_memory != C.DEFAULT_FLAVOR_RAM:
|
|
min_memory_alt = min_memory + 1
|
|
name = 'custom'
|
|
name_alt = 'custom_alt'
|
|
self._conf.set('volume', 'volume_size', str(min_disk))
|
|
self.prefs = [
|
|
{'key': 'flavor_ref', 'name': name, 'ram': min_memory,
|
|
'disk': min_disk, 'no_rng': no_rng},
|
|
{'key': 'flavor_ref_alt', 'name': name_alt,
|
|
'ram': min_memory_alt, 'disk': min_disk, 'no_rng': no_rng}
|
|
]
|
|
|
|
def create_tempest_flavors(self):
|
|
"""Find or create flavors and set them in conf.
|
|
|
|
If 'flavor_ref' and 'flavor_ref_alt' are specified in conf, it will
|
|
try to find them, if not found, it raises an Exception.
|
|
Otherwise it will try finding or creating the required base flavors
|
|
(m1.nano and m1.micro by default) and set their ids in conf.
|
|
"""
|
|
for pref in self.prefs:
|
|
flavor_id = None
|
|
if self._conf.has_option('compute', pref['key']):
|
|
flavor_id = self._conf.get('compute', pref['key'])
|
|
flavor_id = self.find_flavor_by_id(flavor_id)
|
|
if flavor_id is None:
|
|
raise Exception("%s id '%s' specified by user doesn't"
|
|
" exist", pref['key'], flavor_id)
|
|
else:
|
|
flavor_id = self.create_flavor(pref['name'], pref['ram'],
|
|
C.DEFAULT_FLAVOR_VCPUS,
|
|
pref['disk'],
|
|
no_rng=pref['no_rng'])
|
|
self._conf.set('compute', pref['key'], flavor_id)
|
|
|
|
def create_flavor(self, flavor_name, ram, vcpus, disk, no_rng=False):
|
|
"""Create flavors or try to discover two smallest ones available.
|
|
|
|
:param flavor_name: flavor name to be created (usually m1.nano or
|
|
m1.micro)
|
|
:param ram: memory of created flavor in MB
|
|
:param vcpus: number of VCPUs for the flavor
|
|
:param disk: size of disk for flavor in GB
|
|
:param no_rng: boolean, if True, flavor will be created with RNG device
|
|
"""
|
|
flavor_id = self.find_flavor_by_name(flavor_name)
|
|
if flavor_id is not None:
|
|
C.LOG.info("(no change) Found flavor '%s'", flavor_name)
|
|
return flavor_id
|
|
elif self.allow_creation:
|
|
C.LOG.info("Creating flavor '%s'", flavor_name)
|
|
resp = self.client.create_flavor(name=flavor_name,
|
|
ram=ram, vcpus=vcpus,
|
|
disk=disk, id=None)
|
|
args = {'flavor_id': resp['flavor']['id'],
|
|
'hw_rng:allowed': 'True'}
|
|
if no_rng:
|
|
args.pop('hw_rng:allowed')
|
|
self.client.set_flavor_extra_spec(**args)
|
|
return resp['flavor']['id']
|
|
else:
|
|
if len(self.flavor_list) < 2:
|
|
raise Exception("Creation of flavors is not allowed and not "
|
|
"enough available flavors found. Either use --"
|
|
"create argument or create flavors manually.")
|
|
# return id of the discovered flavor
|
|
return self.discover_smallest_flavor(flavor_name)
|
|
|
|
def find_flavor_by_id(self, flavor_id):
|
|
"""Look for a flavor by its id.
|
|
|
|
:type flavor_id: string
|
|
:return: flavor id or None if not found
|
|
:rtype: string or None
|
|
"""
|
|
found = [f for f in self.flavor_list if f['id'] == flavor_id]
|
|
if found:
|
|
C.LOG.info("Found flavor '%s' by it's id '%s'",
|
|
found[0]['name'], flavor_id)
|
|
# return flavor's id
|
|
return found[0]['id']
|
|
return None
|
|
|
|
def find_flavor_by_name(self, flavor_name):
|
|
"""Look for a flavor by its name.
|
|
|
|
:type flavor_name: string
|
|
:return: flavor id or None if not found
|
|
:rtype: string or None
|
|
"""
|
|
found = [f for f in self.flavor_list if f['name'] == flavor_name]
|
|
if found:
|
|
# return flavor's id
|
|
return found[0]['id']
|
|
return None
|
|
|
|
def discover_smallest_flavor(self, flavor_name=""):
|
|
"""Discover the two smallest available flavors in the system.
|
|
|
|
If flavor_name contains "micro", the method returns the second
|
|
smallest flavor found.
|
|
:param flavor_name: [m1.nano, m1.micro]
|
|
"""
|
|
C.LOG.warning("Flavor '%s' not found and creation is not allowed. "
|
|
"Trying to autodetect the smallest flavor available.",
|
|
flavor_name)
|
|
flavors = []
|
|
for flavor in self.flavor_list:
|
|
f = self.client.show_flavor(flavor['id'])['flavor']
|
|
flavors.append((f['name'], f['id'], f['ram'],
|
|
f['disk'], f['vcpus']))
|
|
|
|
# order by ram, disk size and vcpus number and take first two of them
|
|
flavors = sorted(flavors, key=itemgetter(2, 3, 4))[:2]
|
|
|
|
f = None
|
|
if "micro" in flavor_name:
|
|
# take the second smaller one
|
|
f = flavors[1]
|
|
else:
|
|
f = flavors[0]
|
|
C.LOG.warning("Found '%s' flavor (id: '%s', ram: '%s', disk: '%s', "
|
|
"vcpus: '%s') ", f[0], f[1], f[2], f[3], f[4])
|
|
# return flavor's id
|
|
return f[1]
|