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# Copyright (c) 2014 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 oslo_config import cfg
from oslo_log import log
from oslo_serialization import jsonutils
from oslo_utils import excutils
import requests
LOG = log.getLogger(__name__)
cfg.CONF.import_group('ml2_odl', 'networking_odl.common.config')
class OpenDaylightRestClient(object):
@classmethod
def create_client(cls):
if cfg.CONF.ml2_odl.enable_lightweight_testing:
LOG.debug("ODL lightweight testing is enabled, ",
"returning a OpenDaylightLwtClient instance")
"""Have to import at here, otherwise we create a dependency loop"""
from networking_odl.common import lightweight_testing as lwt
cls = lwt.OpenDaylightLwtClient
return cls(
cfg.CONF.ml2_odl.url,
cfg.CONF.ml2_odl.username,
cfg.CONF.ml2_odl.password,
cfg.CONF.ml2_odl.timeout)
def __init__(self, url, username, password, timeout):
self.url = url
self.timeout = timeout
self.auth = (username, password)
def get(self, urlpath='', data=None):
return self.request('get', urlpath, data)
def put(self, urlpath='', data=None):
return self.request('put', urlpath, data)
def delete(self, urlpath='', data=None):
return self.request('delete', urlpath, data)
def request(self, method, urlpath='', data=None):
headers = {'Content-Type': 'application/json'}
url = '/'.join([self.url, urlpath])
LOG.debug(
"Sending METHOD (%(method)s) URL (%(url)s) JSON (%(data)s)",
{'method': method, 'url': url, 'data': data})
return requests.request(
method, url=url, headers=headers, data=data, auth=self.auth,
timeout=self.timeout)
def sendjson(self, method, urlpath, obj):
"""Send json to the OpenDaylight controller."""
data = jsonutils.dumps(obj, indent=2) if obj else None
return self._check_rensponse(self.request(method, urlpath, data))
def try_delete(self, urlpath):
rensponse = self.delete(urlpath)
if rensponse.status_code == requests.codes.not_found:
# The resource is already removed. ignore 404 gracefully
LOG.debug("%(urlpath)s doesn't exist", {'urlpath': urlpath})
return False
else:
self._check_rensponse(rensponse)
return True
def _check_rensponse(self, rensponse):
try:
rensponse.raise_for_status()
except requests.HTTPError as error:
with excutils.save_and_reraise_exception():
LOG.debug("Exception from ODL: %(e)s %(text)s",
{'e': error, 'text': rensponse.text}, exc_info=1)
else:
LOG.debug("Got response:\n"
"(%(response)s)", {'response': rensponse.text})
return rensponse
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