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# Copyright 2020 Spirent Communications, Mirantis
#
# 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.
"""
Utilities for deploying Trafficgenerator on Openstack.
This Code is based on Openstack Shaker.
"""
#import errno
#import functools
import logging
import os
import random
import re
import uuid
#import collections
import yaml
from pykwalify import core as pykwalify_core
from pykwalify import errors as pykwalify_errors
from conf import settings as S
LOG = logging.getLogger(__name__)
def read_file(file_name, base_dir=''):
"""
Read Files
"""
full_path = os.path.normpath(os.path.join(base_dir, file_name))
if not os.path.exists(full_path):
full_path = os.path.normpath(os.path.join('tools',
'os_deploy_tgen',
file_name))
if not os.path.exists(full_path):
full_path = os.path.normpath(os.path.join('tools',
'os_deploy_tgen',
'templates',
file_name))
if not os.path.exists(full_path):
msg = ('File %s not found by absolute nor by relative path' %
file_name)
LOG.error(msg)
raise IOError(msg)
fid = None
try:
fid = open(full_path)
return fid.read()
except IOError as exc:
LOG.error('Error reading file: %s', exc)
raise
finally:
if fid:
fid.close()
def write_file(data, file_name, base_dir=''):
"""
Write to file
"""
full_path = os.path.normpath(os.path.join(base_dir, file_name))
fid = None
try:
fid = open(full_path, 'w')
return fid.write(data)
except IOError as err:
LOG.error('Error writing file: %s', err)
raise
finally:
if fid:
fid.close()
def read_yaml_file(file_name):
"""
Read Yaml File
"""
raw = read_file(file_name)
return read_yaml(raw)
def read_yaml(raw):
"""
Read YAML
"""
try:
parsed = yaml.safe_load(raw)
return parsed
except Exception as error:
LOG.error('Failed to parse input %(yaml)s in YAML format: %(err)s',
dict(yaml=raw, err=error))
raise
def split_address(address):
"""
Split addresses
"""
try:
host, port = address.split(':')
except ValueError:
LOG.error('Invalid address: %s, "host:port" expected', address)
raise
return host, port
def random_string(length=6):
"""
Generate Random String
"""
return ''.join(random.sample('adefikmoprstuz', length))
def make_record_id():
"""
Create record-ID
"""
return str(uuid.uuid4())
def strict(strc):
"""
Strict Check
"""
return re.sub(r'[^\w\d]+', '_', re.sub(r'\(.+\)', '', strc)).lower()
def validate_yaml(data, schema):
"""
Validate Yaml
"""
cor = pykwalify_core.Core(source_data=data, schema_data=schema)
try:
cor.validate(raise_exception=True)
except pykwalify_errors.SchemaError as err:
raise Exception('File does not conform to schema') from err
def pack_openstack_params():
"""
Packe Openstack Parameters
"""
if not S.hasValue('OS_AUTH_URL'):
raise Exception(
'OpenStack authentication endpoint is missing')
params = dict(auth=dict(username=S.getValue('OS_USERNAME'),
password=S.getValue('OS_PASSWORD'),
auth_url=S.getValue('OS_AUTH_URL')),
os_region_name=S.getValue('OS_REGION_NAME'),
os_cacert=S.getValue('OS_CA_CERT'),
os_insecure=S.getValue('OS_INSECURE'))
if S.hasValue('OS_PROJECT_NAME'):
value = S.getValue('OS_PROJECT_NAME')
params['auth']['project_name'] = value
if S.hasValue('OS_PROJECT_DOMAIN_NAME'):
value = S.getValue('OS_PROJECT_DOMAIN_NAME')
params['auth']['project_domain_name'] = value
if S.hasValue('OS_USER_DOMAIN_NAME'):
value = S.getValue('OS_USER_DOMAIN_NAME')
params['auth']['user_domain_name'] = value
if S.hasValue('OS_INTERFACE'):
value = S.getValue('OS_INTERFACE')
params['os_interface'] = value
if S.hasValue('OS_API_VERSION'):
value = S.getValue('OS_API_VERSION')
params['identity_api_version'] = value
if S.hasValue('OS_PROFILE'):
value = S.getValue('OS_PROFILE')
params['os_profile'] = value
return params
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