108 lines
3.7 KiB
Python
108 lines
3.7 KiB
Python
"""
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Copyright 2013 Rackspace, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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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,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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"""
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import json
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import requests
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from ironic_python_agent import encoding
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from ironic_python_agent import errors
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class APIClient(object):
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api_version = 'v1'
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def __init__(self, api_url):
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self.api_url = api_url.rstrip('/')
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self.session = requests.Session()
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self.encoder = encoding.RESTJSONEncoder()
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def _request(self, method, path, data=None):
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request_url = '{api_url}{path}'.format(api_url=self.api_url, path=path)
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if data is not None:
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data = self.encoder.encode(data)
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request_headers = {
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'Content-Type': 'application/json',
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'Accept': 'application/json',
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}
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return self.session.request(method,
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request_url,
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headers=request_headers,
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data=data)
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def heartbeat(self, uuid, advertise_address):
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path = '/{api_version}/nodes/{uuid}/vendor_passthru/heartbeat'.format(
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api_version=self.api_version,
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uuid=uuid
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)
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data = {
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'agent_url': self._get_agent_url(advertise_address)
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}
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try:
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response = self._request('POST', path, data=data)
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except Exception as e:
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raise errors.HeartbeatError(str(e))
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if response.status_code != requests.codes.NO_CONTENT:
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msg = 'Invalid status code: {0}'.format(response.status_code)
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raise errors.HeartbeatError(msg)
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try:
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return float(response.headers['Heartbeat-Before'])
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except KeyError:
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raise errors.HeartbeatError('Missing Heartbeat-Before header')
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except Exception:
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raise errors.HeartbeatError('Invalid Heartbeat-Before header')
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def lookup_node(self, hardware_info):
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path = '/{api_version}/drivers/teeth/lookup'.format(
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api_version=self.api_version
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)
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# This hardware won't be saved on the node currently, because of how
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# driver_vendor_passthru is implemented (no node saving).
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data = {
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'hardware': hardware_info,
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}
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try:
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response = self._request('POST', path, data=data)
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except Exception as e:
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raise errors.LookupNodeError(str(e))
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if response.status_code != requests.codes.OK:
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msg = 'Invalid status code: {0}'.format(response.status_code)
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raise errors.LookupNodeError(msg)
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try:
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content = json.loads(response.content)
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except Exception as e:
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raise errors.LookupNodeError('Error decoding response: '
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+ str(e))
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if 'node' not in content or 'uuid' not in content['node']:
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raise errors.LookupNodeError('Got invalid node data from the API:'
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' {0}'.format(content))
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if 'heartbeat_timeout' not in content:
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raise errors.LookupNodeError('Got invalid')
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return content
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def _get_agent_url(self, advertise_address):
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return 'http://{0}:{1}'.format(advertise_address[0],
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advertise_address[1])
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