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# Copyright 2012 OpenStack Foundation
# 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.
import copy
from oslo_utils import encodeutils
from oslo_utils import strutils
import six
import six.moves.urllib.parse as urlparse
from escalatorclient.common import utils
from escalatorclient.openstack.common.apiclient import base
from escalatorclient.common.http import HTTPClient
CREATE_PARAMS = ('id', 'name', 'description', 'type', 'version', 'size',
'checksum', 'status', 'os_status', 'version_patch')
DEFAULT_PAGE_SIZE = 200
VERSION_PARAMS = ('type')
SORT_DIR_VALUES = ('asc', 'desc')
SORT_KEY_VALUES = (
'name', 'id', 'cluster_id', 'created_at', 'updated_at', 'status')
OS_REQ_ID_HDR = 'x-openstack-request-id'
class Version(base.Resource):
def __repr__(self):
return "<Version %s>" % self._info
def update(self, **fields):
self.manager.update(self, **fields)
def delete(self, **kwargs):
return self.manager.delete(self)
def data(self, **kwargs):
return self.manager.data(self, **kwargs)
class VersionManager(base.ManagerWithFind):
resource_class = Version
def get_version_client(self):
endpoint = "http://127.0.0.1:19292"
client = HTTPClient(endpoint)
return client
def _list(self, url, response_key, obj_class=None, body=None):
version_client = self.get_version_client()
resp, body = version_client.get(url)
if obj_class is None:
obj_class = self.resource_class
data = body[response_key]
return ([obj_class(self, res, loaded=True) for res in data if res],
resp)
def _version_meta_from_headers(self, headers):
meta = {'properties': {}}
safe_decode = encodeutils.safe_decode
for key, value in six.iteritems(headers):
value = safe_decode(value, incoming='utf-8')
if key.startswith('x-image-meta-property-'):
_key = safe_decode(key[22:], incoming='utf-8')
meta['properties'][_key] = value
elif key.startswith('x-image-meta-'):
_key = safe_decode(key[13:], incoming='utf-8')
meta[_key] = value
for key in ['is_public', 'protected', 'deleted']:
if key in meta:
meta[key] = strutils.bool_from_string(meta[key])
return self._format_version_meta_for_user(meta)
def _version_meta_to_headers(self, fields):
headers = {}
fields_copy = copy.deepcopy(fields)
for key, value in six.iteritems(fields_copy):
headers['%s' % key] = utils.to_str(value)
return headers
@staticmethod
def _format_version_meta_for_user(meta):
for key in ['size', 'min_ram', 'min_disk']:
if key in meta:
try:
meta[key] = int(meta[key]) if meta[key] else 0
except ValueError:
pass
return meta
def _build_params(self, parameters):
params = {'limit': parameters.get('page_size', DEFAULT_PAGE_SIZE)}
if 'marker' in parameters:
params['marker'] = parameters['marker']
sort_key = parameters.get('sort_key')
if sort_key is not None:
if sort_key in SORT_KEY_VALUES:
params['sort_key'] = sort_key
else:
raise ValueError('sort_key must be one of the following: %s.'
% ', '.join(SORT_KEY_VALUES))
sort_dir = parameters.get('sort_dir')
if sort_dir is not None:
if sort_dir in SORT_DIR_VALUES:
params['sort_dir'] = sort_dir
else:
raise ValueError('sort_dir must be one of the following: %s.'
% ', '.join(SORT_DIR_VALUES))
filters = parameters.get('filters', {})
params.update(filters)
return params
def list(self, **kwargs):
"""Get a list of versions.
:param page_size: number of items to request in each paginated request
:param limit: maximum number of versions to return
:param marker:begin returning versions that appear later in version
list than that represented by this version id
:param filters: dict of direct comparison filters that mimics the
structure of an version object
:param return_request_id: If an empty list is provided, populate this
list with the request ID value from the header
x-openstack-request-id
:rtype: list of :class:`version`
"""
absolute_limit = kwargs.get('limit')
page_size = kwargs.get('page_size', DEFAULT_PAGE_SIZE)
def paginate(qp, return_request_id=None):
for param, value in six.iteritems(qp):
if isinstance(value, six.string_types):
# Note(flaper87) Url encoding should
# be moved inside http utils, at least
# shouldn't be here.
#
# Making sure all params are str before
# trying to encode them
qp[param] = encodeutils.safe_decode(value)
url = '/v1/versions?%s' % urlparse.urlencode(qp)
versions, resp = self._list(url, "versions")
if return_request_id is not None:
return_request_id.append(resp.headers.get(OS_REQ_ID_HDR, None))
for version in versions:
yield version
return_request_id = kwargs.get('return_req_id', None)
params = self._build_params(kwargs)
seen = 0
while True:
seen_last_page = 0
filtered = 0
for version in paginate(params, return_request_id):
last_version = version.id
if (absolute_limit is not None and
seen + seen_last_page >= absolute_limit):
# Note(kragniz): we've seen enough images
return
else:
seen_last_page += 1
yield version
seen += seen_last_page
if seen_last_page + filtered == 0:
# Note(kragniz): we didn't get any versions in the last page
return
if absolute_limit is not None and seen >= absolute_limit:
# Note(kragniz): reached the limit of versions to return
return
if page_size and seen_last_page + filtered < page_size:
# Note(kragniz): we've reached the last page of the versions
return
# Note(kragniz): there are more versions to come
params['marker'] = last_version
seen_last_page = 0
def version(self, **kwargs):
"""Get internal or external version of escalator.
TODO(bcwaldon): document accepted params
"""
version_client = HTTPClient("http://127.0.0.1:19393")
fields = {}
for field in kwargs:
if field in VERSION_PARAMS:
fields[field] = kwargs[field]
else:
msg = 'install() got an unexpected keyword argument \'%s\''
raise TypeError(msg % field)
url = '/v1/versions'
hdrs = self._version_meta_to_headers(fields)
resp, body = version_client.post(url, headers=None, data=hdrs)
return Version(self, body)
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