df701c979c
The code that comprises the backoff looping call moved to oslo.service in 0.10.0 and IPA can use that version so remove the local backoff code and just prefer the oslo.service maintained and supported version instead. Change-Id: Ifec3490f9e5c68859deff4a951dcdf59caa7ca3a
147 lines
5.1 KiB
Python
147 lines
5.1 KiB
Python
# Copyright 2013 Rackspace, Inc.
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#
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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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#
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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,
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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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import json
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from oslo_log import log
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from oslo_service import loopingcall
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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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LOG = log.getLogger(__name__)
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class APIClient(object):
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api_version = 'v1'
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payload_version = '2'
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def __init__(self, api_url, driver_name):
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self.api_url = api_url.rstrip('/')
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self.driver_name = driver_name
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# Only keep alive a maximum of 2 connections to the API. More will be
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# opened if they are needed, but they will be closed immediately after
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# use.
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adapter = requests.adapters.HTTPAdapter(pool_connections=2,
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pool_maxsize=2)
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self.session = requests.Session()
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self.session.mount(self.api_url, adapter)
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self.encoder = encoding.RESTJSONEncoder()
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self.log = log.getLogger(__name__)
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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.ACCEPTED:
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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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def lookup_node(self, hardware_info, timeout, starting_interval,
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node_uuid=None):
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timer = loopingcall.BackOffLoopingCall(
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self._do_lookup,
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hardware_info=hardware_info,
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node_uuid=node_uuid)
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try:
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node_content = timer.start(starting_interval=starting_interval,
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timeout=timeout).wait()
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except loopingcall.LoopingCallTimeOut:
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raise errors.LookupNodeError('Could not look up node info. Check '
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'logs for details.')
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return node_content
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def _do_lookup(self, hardware_info, node_uuid):
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"""The actual call to lookup a node.
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Should be called as a `loopingcall.BackOffLoopingCall`.
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"""
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path = '/{api_version}/drivers/{driver}/vendor_passthru/lookup'.format(
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api_version=self.api_version,
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driver=self.driver_name
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)
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# This hardware won't be saved on the node currently, because of
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# how driver_vendor_passthru is implemented (no node saving).
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data = {
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'version': self.payload_version,
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'inventory': hardware_info
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}
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if node_uuid:
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data['node_uuid'] = node_uuid
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# Make the POST, make sure we get back normal data/status codes and
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# content
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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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self.log.warning('POST failed: %s' % str(e))
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return False
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if response.status_code != requests.codes.OK:
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self.log.warning('Invalid status code: %s' % response.status_code)
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return False
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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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self.log.warning('Error decoding response: %s' % str(e))
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return False
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# Check for valid response data
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if 'node' not in content or 'uuid' not in content['node']:
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self.log.warning('Got invalid node data from the API: %s' %
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content)
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return False
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if 'heartbeat_timeout' not in content:
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self.log.warning('Got invalid heartbeat from the API: %s' %
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content)
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return False
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# Got valid content
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raise loopingcall.LoopingCallDone(retvalue=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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