711 lines
26 KiB
Python
711 lines
26 KiB
Python
# Copyright 2012 OpenStack Foundation.
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# Copyright 2015 Hewlett-Packard Development Company, L.P.
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# All Rights Reserved
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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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#
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import logging
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import time
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import requests
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import six.moves.urllib.parse as urlparse
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from tackerclient import client
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from tackerclient.common import constants
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from tackerclient.common import exceptions
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from tackerclient.common import serializer
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from tackerclient.common import utils
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from tackerclient.i18n import _
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_logger = logging.getLogger(__name__)
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DEFAULT_DESC_LENGTH = 25
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DEFAULT_ERROR_REASON_LENGTH = 100
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def exception_handler_v10(status_code, error_content):
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"""Exception handler for API v1.0 client.
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This routine generates the appropriate Tacker exception according to
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the contents of the response body.
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:param status_code: HTTP error status code
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:param error_content: deserialized body of error response
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"""
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error_dict = None
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if isinstance(error_content, dict):
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error_dict = error_content.get('TackerError')
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# Find real error type
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bad_tacker_error_flag = False
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if error_dict:
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# If Tacker key is found, it will definitely contain
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# a 'message' and 'type' keys?
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try:
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error_type = error_dict['type']
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error_message = error_dict['message']
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if error_dict['detail']:
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error_message += "\n" + error_dict['detail']
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except Exception:
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bad_tacker_error_flag = True
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if not bad_tacker_error_flag:
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# If corresponding exception is defined, use it.
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client_exc = getattr(exceptions, '%sClient' % error_type, None)
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# Otherwise look up per status-code client exception
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if not client_exc:
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client_exc = exceptions.HTTP_EXCEPTION_MAP.get(status_code)
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if client_exc:
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raise client_exc(message=error_message,
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status_code=status_code)
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else:
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raise exceptions.TackerClientException(
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status_code=status_code, message=error_message)
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else:
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raise exceptions.TackerClientException(status_code=status_code,
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message=error_dict)
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else:
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message = None
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if isinstance(error_content, dict):
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message = error_content.get('message')
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if message:
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raise exceptions.TackerClientException(status_code=status_code,
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message=message)
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# If we end up here the exception was not a tacker error
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msg = "%s-%s" % (status_code, error_content)
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raise exceptions.TackerClientException(status_code=status_code,
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message=msg)
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class APIParamsCall(object):
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"""A Decorator to support formating and tenant overriding and filters."""
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def __init__(self, function):
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self.function = function
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def __get__(self, instance, owner):
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def with_params(*args, **kwargs):
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_format = instance.format
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if 'format' in kwargs:
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instance.format = kwargs['format']
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ret = self.function(instance, *args, **kwargs)
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instance.format = _format
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return ret
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return with_params
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class ClientBase(object):
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"""Client for the OpenStack Tacker v1.0 API.
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:param string username: Username for authentication. (optional)
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:param string user_id: User ID for authentication. (optional)
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:param string password: Password for authentication. (optional)
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:param string token: Token for authentication. (optional)
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:param string tenant_name: Tenant name. (optional)
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:param string tenant_id: Tenant id. (optional)
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:param string auth_strategy: 'keystone' by default, 'noauth' for no
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authentication against keystone. (optional)
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:param string auth_url: Keystone service endpoint for authorization.
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:param string service_type: Network service type to pull from the
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keystone catalog (e.g. 'network') (optional)
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:param string endpoint_type: Network service endpoint type to pull from the
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keystone catalog (e.g. 'publicURL',
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'internalURL', or 'adminURL') (optional)
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:param string region_name: Name of a region to select when choosing an
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endpoint from the service catalog.
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:param string endpoint_url: A user-supplied endpoint URL for the tacker
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service. Lazy-authentication is possible for API
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service calls if endpoint is set at
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instantiation.(optional)
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:param integer timeout: Allows customization of the timeout for client
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http requests. (optional)
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:param bool insecure: SSL certificate validation. (optional)
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:param bool log_credentials: Allow for logging of passwords or not.
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Defaults to False. (optional)
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:param string ca_cert: SSL CA bundle file to use. (optional)
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:param integer retries: How many times idempotent (GET, PUT, DELETE)
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requests to Tacker server should be retried if
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they fail (default: 0).
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:param bool raise_errors: If True then exceptions caused by connection
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failure are propagated to the caller.
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(default: True)
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:param session: Keystone client auth session to use. (optional)
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:param auth: Keystone auth plugin to use. (optional)
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Example::
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from tackerclient.v1_0 import client
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tacker = client.Client(username=USER,
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password=PASS,
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tenant_name=TENANT_NAME,
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auth_url=KEYSTONE_URL)
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nets = tacker.list_networks()
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...
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"""
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# API has no way to report plurals, so we have to hard code them
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# This variable should be overridden by a child class.
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EXTED_PLURALS = {}
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def __init__(self, **kwargs):
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"""Initialize a new client for the Tacker v1.0 API."""
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super(ClientBase, self).__init__()
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self.retries = kwargs.pop('retries', 0)
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self.raise_errors = kwargs.pop('raise_errors', True)
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self.httpclient = client.construct_http_client(**kwargs)
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self.version = '1.0'
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self.format = 'json'
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self.action_prefix = "/v%s" % (self.version)
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self.retry_interval = 1
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def _handle_fault_response(self, status_code, response_body):
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# Create exception with HTTP status code and message
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_logger.debug("Error message: %s", response_body)
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# Add deserialized error message to exception arguments
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try:
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des_error_body = self.deserialize(response_body, status_code)
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except Exception:
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# If unable to deserialized body it is probably not a
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# Tacker error
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des_error_body = {'message': response_body}
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# Raise the appropriate exception
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exception_handler_v10(status_code, des_error_body)
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def do_request(self, method, action, body=None, headers=None, params=None):
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# Add format and tenant_id
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action += ".%s" % self.format
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action = self.action_prefix + action
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if type(params) is dict and params:
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params = utils.safe_encode_dict(params)
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action += '?' + urlparse.urlencode(params, doseq=1)
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if body:
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body = self.serialize(body)
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resp, replybody = self.httpclient.do_request(
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action, method, body=body,
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content_type=self.content_type())
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status_code = resp.status_code
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if status_code in (requests.codes.ok,
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requests.codes.created,
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requests.codes.accepted,
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requests.codes.no_content):
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return self.deserialize(replybody, status_code)
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else:
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if not replybody:
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replybody = resp.reason
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self._handle_fault_response(status_code, replybody)
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def get_auth_info(self):
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return self.httpclient.get_auth_info()
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def serialize(self, data):
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"""Serializes a dictionary into either XML or JSON.
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A dictionary with a single key can be passed and it can contain any
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structure.
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"""
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if data is None:
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return None
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elif type(data) is dict:
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return serializer.Serializer(
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self.get_attr_metadata()).serialize(data, self.content_type())
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else:
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raise Exception(_("Unable to serialize object of type = '%s'") %
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type(data))
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def deserialize(self, data, status_code):
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"""Deserializes an XML or JSON string into a dictionary."""
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if status_code == 204:
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return data
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return serializer.Serializer(self.get_attr_metadata()).deserialize(
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data, self.content_type())['body']
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def get_attr_metadata(self):
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if self.format == 'json':
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return {}
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old_request_format = self.format
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self.format = 'json'
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exts = self.list_extensions()['extensions']
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self.format = old_request_format
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ns = dict([(ext['alias'], ext['namespace']) for ext in exts])
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self.EXTED_PLURALS.update(constants.PLURALS)
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return {'plurals': self.EXTED_PLURALS,
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'xmlns': constants.XML_NS_V10,
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constants.EXT_NS: ns}
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def content_type(self, _format=None):
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"""Returns the mime-type for either 'xml' or 'json'.
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Defaults to the currently set format.
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"""
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_format = _format or self.format
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return "application/%s" % (_format)
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def retry_request(self, method, action, body=None,
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headers=None, params=None):
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"""Call do_request with the default retry configuration.
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Only idempotent requests should retry failed connection attempts.
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:raises ConnectionFailed: if the maximum # of retries is exceeded
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"""
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max_attempts = self.retries + 1
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for i in range(max_attempts):
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try:
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return self.do_request(method, action, body=body,
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headers=headers, params=params)
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except exceptions.ConnectionFailed:
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# Exception has already been logged by do_request()
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if i < self.retries:
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_logger.debug('Retrying connection to Tacker service')
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time.sleep(self.retry_interval)
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elif self.raise_errors:
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raise
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if self.retries:
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msg = (_("Failed to connect to Tacker server after %d attempts")
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% max_attempts)
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else:
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msg = _("Failed to connect Tacker server")
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raise exceptions.ConnectionFailed(reason=msg)
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def delete(self, action, body=None, headers=None, params=None):
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return self.retry_request("DELETE", action, body=body,
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headers=headers, params=params)
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def get(self, action, body=None, headers=None, params=None):
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return self.retry_request("GET", action, body=body,
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headers=headers, params=params)
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def post(self, action, body=None, headers=None, params=None):
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# Do not retry POST requests to avoid the orphan objects problem.
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return self.do_request("POST", action, body=body,
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headers=headers, params=params)
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def put(self, action, body=None, headers=None, params=None):
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return self.retry_request("PUT", action, body=body,
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headers=headers, params=params)
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def list(self, collection, path, retrieve_all=True, **params):
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if retrieve_all:
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res = []
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for r in self._pagination(collection, path, **params):
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res.extend(r[collection])
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return {collection: res}
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else:
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return self._pagination(collection, path, **params)
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def _pagination(self, collection, path, **params):
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if params.get('page_reverse', False):
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linkrel = 'previous'
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else:
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linkrel = 'next'
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next = True
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while next:
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res = self.get(path, params=params)
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yield res
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next = False
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try:
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for link in res['%s_links' % collection]:
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if link['rel'] == linkrel:
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query_str = urlparse.urlparse(link['href']).query
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params = urlparse.parse_qs(query_str)
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next = True
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break
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except KeyError:
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break
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class Client(ClientBase):
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extensions_path = "/extensions"
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extension_path = "/extensions/%s"
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vnfds_path = '/vnfds'
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vnfd_path = '/vnfds/%s'
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vnfs_path = '/vnfs'
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vnf_path = '/vnfs/%s'
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vnf_scale_path = '/vnfs/%s/actions'
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vnf_resources_path = '/vnfs/%s/resources'
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vims_path = '/vims'
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vim_path = '/vims/%s'
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events_path = '/events'
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event_path = '/events/%s'
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vnffgds_path = '/vnffgds'
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vnffgd_path = '/vnffgds/%s'
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vnffgs_path = '/vnffgs'
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vnffg_path = '/vnffgs/%s'
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nfps_path = '/nfps'
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nfp_path = '/nfps/%s'
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sfcs_path = '/sfcs'
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sfc_path = '/sfcs/%s'
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fcs_path = '/classifiers'
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fc_path = '/classifiers/%s'
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nsds_path = '/nsds'
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nsd_path = '/nsds/%s'
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nss_path = '/nss'
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ns_path = '/nss/%s'
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clusters_path = '/clusters'
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cluster_path = '/clusters/%s'
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cluster_members_path = '/clustermembers'
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cluster_member_path = '/clustermembers/%s'
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# API has no way to report plurals, so we have to hard code them
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# EXTED_PLURALS = {}
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@APIParamsCall
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def list_extensions(self, **_params):
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"""Fetch a list of all exts on server side."""
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return self.get(self.extensions_path, params=_params)
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@APIParamsCall
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def show_extension(self, ext_alias, **_params):
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"""Fetch a list of all exts on server side."""
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return self.get(self.extension_path % ext_alias, params=_params)
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_VNFD = "vnfd"
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_NSD = "nsd"
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@APIParamsCall
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def list_vnfds(self, retrieve_all=True, **_params):
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vnfds_dict = self.list(self._VNFD + 's',
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self.vnfds_path,
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retrieve_all,
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**_params)
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for vnfd in vnfds_dict['vnfds']:
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if vnfd.get('description'):
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if len(vnfd['description']) > DEFAULT_DESC_LENGTH:
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vnfd['description'] = \
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vnfd['description'][:DEFAULT_DESC_LENGTH]
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vnfd['description'] += '...'
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return vnfds_dict
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@APIParamsCall
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def show_vnfd(self, vnfd, **_params):
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return self.get(self.vnfd_path % vnfd,
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params=_params)
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@APIParamsCall
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def create_vnfd(self, body):
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body[self._VNFD]['service_types'] = [{'service_type': 'vnfd'}]
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return self.post(self.vnfds_path, body)
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@APIParamsCall
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def delete_vnfd(self, vnfd):
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return self.delete(self.vnfd_path % vnfd)
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@APIParamsCall
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def list_vnfs(self, retrieve_all=True, **_params):
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vnfs = self.list('vnfs', self.vnfs_path, retrieve_all, **_params)
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for vnf in vnfs['vnfs']:
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error_reason = vnf.get('error_reason', None)
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if error_reason and \
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len(error_reason) > DEFAULT_ERROR_REASON_LENGTH:
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vnf['error_reason'] = error_reason[
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:DEFAULT_ERROR_REASON_LENGTH]
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vnf['error_reason'] += '...'
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return vnfs
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@APIParamsCall
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def show_vnf(self, vnf, **_params):
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return self.get(self.vnf_path % vnf, params=_params)
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@APIParamsCall
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def create_vnf(self, body):
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return self.post(self.vnfs_path, body=body)
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@APIParamsCall
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def delete_vnf(self, vnf):
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return self.delete(self.vnf_path % vnf)
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@APIParamsCall
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def update_vnf(self, vnf, body):
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return self.put(self.vnf_path % vnf, body=body)
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@APIParamsCall
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def list_vnf_resources(self, vnf, retrieve_all=True, **_params):
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return self.list('resources', self.vnf_resources_path % vnf,
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retrieve_all, **_params)
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@APIParamsCall
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def scale_vnf(self, vnf, body=None):
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return self.post(self.vnf_scale_path % vnf, body=body)
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@APIParamsCall
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def show_vim(self, vim, **_params):
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return self.get(self.vim_path % vim, params=_params)
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_VIM = "vim"
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@APIParamsCall
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def create_vim(self, body):
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return self.post(self.vims_path, body=body)
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@APIParamsCall
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def delete_vim(self, vim):
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return self.delete(self.vim_path % vim)
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@APIParamsCall
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def update_vim(self, vim, body):
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return self.put(self.vim_path % vim, body=body)
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@APIParamsCall
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def list_vims(self, retrieve_all=True, **_params):
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return self.list('vims', self.vims_path, retrieve_all, **_params)
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@APIParamsCall
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def list_events(self, retrieve_all=True, **_params):
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events = self.list('events', self.events_path, retrieve_all,
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**_params)
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return events
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@APIParamsCall
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def list_vnf_events(self, retrieve_all=True, **_params):
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_params['resource_type'] = 'vnf'
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events = self.list('events', self.events_path, retrieve_all,
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**_params)
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vnf_events = {}
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vnf_events['vnf_events'] = events['events']
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return vnf_events
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@APIParamsCall
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def list_vnfd_events(self, retrieve_all=True, **_params):
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_params['resource_type'] = 'vnfd'
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events = self.list('events', self.events_path, retrieve_all,
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**_params)
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vnfd_events = {}
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vnfd_events['vnfd_events'] = events['events']
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return vnfd_events
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@APIParamsCall
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def list_vim_events(self, retrieve_all=True, **_params):
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_params['resource_type'] = 'vim'
|
|
events = self.list('events', self.events_path, retrieve_all,
|
|
**_params)
|
|
vim_events = {}
|
|
vim_events['vim_events'] = events['events']
|
|
return vim_events
|
|
|
|
@APIParamsCall
|
|
def show_event(self, event_id, **_params):
|
|
return self.get(self.event_path % event_id, params=_params)
|
|
|
|
_VNFFGD = "vnffgd"
|
|
|
|
@APIParamsCall
|
|
def create_vnffgd(self, body):
|
|
return self.post(self.vnffgds_path, body)
|
|
|
|
@APIParamsCall
|
|
def list_vnffgds(self, retrieve_all=True, **_params):
|
|
vnffgds_dict = self.list(self._VNFFGD + 's',
|
|
self.vnffgds_path,
|
|
retrieve_all,
|
|
**_params)
|
|
for vnffgd in vnffgds_dict['vnffgds']:
|
|
if 'description' in vnffgd.keys() and \
|
|
len(vnffgd['description']) > DEFAULT_DESC_LENGTH:
|
|
vnffgd['description'] = vnffgd['description'][
|
|
:DEFAULT_DESC_LENGTH]
|
|
vnffgd['description'] += '...'
|
|
return vnffgds_dict
|
|
|
|
@APIParamsCall
|
|
def show_vnffgd(self, vnffgd, **_params):
|
|
return self.get(self.vnffgd_path % vnffgd, params=_params)
|
|
|
|
@APIParamsCall
|
|
def delete_vnffgd(self, vnffgd):
|
|
return self.delete(self.vnffgd_path % vnffgd)
|
|
|
|
@APIParamsCall
|
|
def list_vnffgs(self, retrieve_all=True, **_params):
|
|
vnffgs = self.list('vnffgs', self.vnffgs_path, retrieve_all, **_params)
|
|
for vnffg in vnffgs['vnffgs']:
|
|
error_reason = vnffg.get('error_reason', None)
|
|
if error_reason and \
|
|
len(error_reason) > DEFAULT_ERROR_REASON_LENGTH:
|
|
vnffg['error_reason'] = error_reason[
|
|
:DEFAULT_ERROR_REASON_LENGTH]
|
|
vnffg['error_reason'] += '...'
|
|
return vnffgs
|
|
|
|
@APIParamsCall
|
|
def show_vnffg(self, vnffg, **_params):
|
|
return self.get(self.vnffg_path % vnffg, params=_params)
|
|
|
|
@APIParamsCall
|
|
def create_vnffg(self, body):
|
|
return self.post(self.vnffgs_path, body=body)
|
|
|
|
@APIParamsCall
|
|
def delete_vnffg(self, vnffg):
|
|
return self.delete(self.vnffg_path % vnffg)
|
|
|
|
@APIParamsCall
|
|
def update_vnffg(self, vnffg, body):
|
|
return self.put(self.vnffg_path % vnffg, body=body)
|
|
|
|
@APIParamsCall
|
|
def list_sfcs(self, retrieve_all=True, **_params):
|
|
sfcs = self.list('sfcs', self.sfcs_path, retrieve_all, **_params)
|
|
for chain in sfcs['sfcs']:
|
|
error_reason = chain.get('error_reason', None)
|
|
if error_reason and \
|
|
len(error_reason) > DEFAULT_ERROR_REASON_LENGTH:
|
|
chain['error_reason'] = error_reason[
|
|
:DEFAULT_ERROR_REASON_LENGTH]
|
|
chain['error_reason'] += '...'
|
|
return sfcs
|
|
|
|
@APIParamsCall
|
|
def show_sfc(self, chain, **_params):
|
|
return self.get(self.sfc_path % chain, params=_params)
|
|
|
|
@APIParamsCall
|
|
def list_nfps(self, retrieve_all=True, **_params):
|
|
nfps = self.list('nfps', self.nfps_path, retrieve_all, **_params)
|
|
for nfp in nfps['nfps']:
|
|
error_reason = nfp.get('error_reason', None)
|
|
if error_reason and \
|
|
len(error_reason) > DEFAULT_ERROR_REASON_LENGTH:
|
|
nfp['error_reason'] = error_reason[
|
|
:DEFAULT_ERROR_REASON_LENGTH]
|
|
nfp['error_reason'] += '...'
|
|
return nfps
|
|
|
|
@APIParamsCall
|
|
def show_nfp(self, nfp, **_params):
|
|
return self.get(self.nfp_path % nfp, params=_params)
|
|
|
|
@APIParamsCall
|
|
def list_classifiers(self, retrieve_all=True, **_params):
|
|
classifiers = self.list('classifiers', self.fcs_path, retrieve_all,
|
|
**_params)
|
|
for classifier in classifiers['classifiers']:
|
|
error_reason = classifier.get('error_reason', None)
|
|
if error_reason and \
|
|
len(error_reason) > DEFAULT_ERROR_REASON_LENGTH:
|
|
classifier['error_reason'] = error_reason[
|
|
:DEFAULT_ERROR_REASON_LENGTH]
|
|
classifier['error_reason'] += '...'
|
|
return classifiers
|
|
|
|
@APIParamsCall
|
|
def show_classifier(self, classifier, **_params):
|
|
return self.get(self.fc_path % classifier, params=_params)
|
|
|
|
@APIParamsCall
|
|
def list_nsds(self, retrieve_all=True, **_params):
|
|
nsds_dict = self.list(self._NSD + 's',
|
|
self.nsds_path,
|
|
retrieve_all,
|
|
**_params)
|
|
for nsd in nsds_dict['nsds']:
|
|
if 'description' in nsd.keys() and \
|
|
len(nsd['description']) > DEFAULT_DESC_LENGTH:
|
|
nsd['description'] = nsd['description'][:DEFAULT_DESC_LENGTH]
|
|
nsd['description'] += '...'
|
|
return nsds_dict
|
|
|
|
@APIParamsCall
|
|
def show_nsd(self, nsd, **_params):
|
|
return self.get(self.nsd_path % nsd,
|
|
params=_params)
|
|
|
|
@APIParamsCall
|
|
def create_nsd(self, body):
|
|
return self.post(self.nsds_path, body)
|
|
|
|
@APIParamsCall
|
|
def delete_nsd(self, nsd):
|
|
return self.delete(self.nsd_path % nsd)
|
|
|
|
@APIParamsCall
|
|
def list_nss(self, retrieve_all=True, **_params):
|
|
nss = self.list('nss', self.nss_path, retrieve_all, **_params)
|
|
for ns in nss['nss']:
|
|
error_reason = ns.get('error_reason', None)
|
|
if error_reason and \
|
|
len(error_reason) > DEFAULT_ERROR_REASON_LENGTH:
|
|
ns['error_reason'] = error_reason[
|
|
:DEFAULT_ERROR_REASON_LENGTH]
|
|
ns['error_reason'] += '...'
|
|
return nss
|
|
|
|
@APIParamsCall
|
|
def show_ns(self, ns, **_params):
|
|
return self.get(self.ns_path % ns, params=_params)
|
|
|
|
@APIParamsCall
|
|
def create_ns(self, body):
|
|
return self.post(self.nss_path, body=body)
|
|
|
|
@APIParamsCall
|
|
def delete_ns(self, ns):
|
|
return self.delete(self.ns_path % ns)
|
|
|
|
@APIParamsCall
|
|
def create_cluster(self, body=None):
|
|
return self.post(self.clusters_path, body)
|
|
|
|
@APIParamsCall
|
|
def list_clusters(self, retrieve_all=True, **_params):
|
|
clusters = self.list('clusters', self.clusters_path,
|
|
retrieve_all, **_params)
|
|
return clusters
|
|
|
|
@APIParamsCall
|
|
def show_cluster(self, cluster, **_params):
|
|
member = self.get(self.cluster_path % cluster,
|
|
params=_params)
|
|
return member
|
|
|
|
@APIParamsCall
|
|
def delete_cluster(self, cluster):
|
|
return self.delete(self.cluster_path % cluster)
|
|
|
|
@APIParamsCall
|
|
def create_clustermember(self, body=None):
|
|
return self.post(self.cluster_members_path, body)
|
|
|
|
@APIParamsCall
|
|
def list_clustermembers(self, retrieve_all=True, **_params):
|
|
cluster_members = self.list('clustermembers',
|
|
self.cluster_members_path,
|
|
retrieve_all, **_params)
|
|
return cluster_members
|
|
|
|
@APIParamsCall
|
|
def show_clustermember(self, clustermember, **_params):
|
|
member = self.get(self.cluster_member_path % clustermember,
|
|
params=_params)
|
|
return member
|
|
|
|
@APIParamsCall
|
|
def delete_clustermember(self, clustermember):
|
|
return self.delete(self.cluster_member_path % clustermember)
|