214 lines
8.8 KiB
Python
214 lines
8.8 KiB
Python
# Copyright (c) 2014 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
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# 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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from __future__ import division
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import json
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import time
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from oslo_config import cfg
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from taskflow import task
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from poppy.distributed_task.taskflow.task import common
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from poppy.distributed_task.utils import exc_loader
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from poppy.distributed_task.utils import memoized_controllers
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from poppy.model.helpers import provider_details as pd
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from poppy.openstack.common import log
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from poppy.transport.pecan.models.request import (
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provider_details as req_provider_details
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)
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LOG = log.getLogger(__name__)
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conf = cfg.CONF
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conf(project='poppy', prog='poppy', args=[])
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DNS_OPTIONS = [
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cfg.IntOpt('retries', default=5,
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help='Total number of Retries after Exponentially Backing Off')
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]
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DNS_GROUP = 'driver:dns'
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conf.register_opts(DNS_OPTIONS, group=DNS_GROUP)
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class DeleteProviderServicesTask(task.Task):
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default_provides = "responders"
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def execute(self, provider_details):
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service_controller = memoized_controllers.task_controllers('poppy')
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provider_details = json.loads(provider_details)
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responders = []
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# try to delete all service from each provider presented
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# in provider_details
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for provider in provider_details:
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provider_details[provider] = (
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req_provider_details.load_from_json(provider_details[provider])
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)
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LOG.info('Starting to delete service from {0}'.format(provider))
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responder = service_controller.provider_wrapper.delete(
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service_controller._driver.providers[provider.lower()],
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provider_details)
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responders.append(responder)
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LOG.info('Deleting service from {0} complete...'.format(provider))
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return responders
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class DeleteServiceDNSMappingTask(task.Task):
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default_provides = "dns_responder"
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def execute(self, provider_details, retry_sleep_time,
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responders, project_id, service_id):
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service_controller, dns = \
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memoized_controllers.task_controllers('poppy', 'dns')
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provider_details = json.loads(provider_details)
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for provider in provider_details:
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provider_details[provider] = (
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req_provider_details.load_from_json(provider_details[provider])
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)
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# delete associated cname records from DNS
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dns_responder = dns.delete(
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provider_details)
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for provider_name in dns_responder:
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if 'error' in dns_responder[provider_name]:
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msg = 'Delete DNS for {0} ' \
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'failed!'.format(provider_name)
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LOG.info(msg)
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if 'error_class' in dns_responder[provider_name]:
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exception_repr = \
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dns_responder[provider_name]['error_class']
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exception_class = exc_loader(exception_repr)
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if any([exception_class == exception for
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exception in dns._driver.retry_exceptions]):
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LOG.info('Due to {0} Exception, '
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'Task {1} will '
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'be retried'.format(exception_class,
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self.__class__))
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raise exception_class(msg)
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else:
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LOG.info("DNS Deletion Successful "
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"for Provider {0} : "
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"{1}".format(provider_name,
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dns_responder[provider_name]))
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return dns_responder
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def revert(self, provider_details, retry_sleep_time,
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responders, project_id, service_id, **kwargs):
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if self.name in kwargs['flow_failures'].keys():
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retries = conf[DNS_GROUP].retries
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current_progress = (1.0 / retries)
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if hasattr(self, 'retry_progress') \
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and hasattr(self, 'retry_index'):
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self.retry_index = self.retry_index + 1
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self.retry_progress = current_progress * self.retry_index
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if not hasattr(self, 'retry_progress') \
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and not hasattr(self, 'retry_index'):
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self.retry_progress = current_progress
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self.retry_index = 1
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if self.retry_progress == 1.0:
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LOG.warn('Maximum retry attempts of '
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'{0} reached for Task {1}'.format(retries, self.name))
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LOG.warn('Setting of state of service_id: '
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'{0} and project_id: {1} '
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'to failed'.format(service_id, project_id))
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provider_details_dict = {}
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result = kwargs['result']
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for responder in responders:
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for provider_name in responder:
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provider_details_dict[provider_name] = (
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pd.ProviderDetail(
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error_info=result.traceback_str,
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status='failed',
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error_message='Failed after '
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'{0} DNS '
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'retries'.format(retries),
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error_class=str(result.exc_info[0])))
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# serialize provider_details_dict
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for provider_name in provider_details_dict:
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provider_details_dict[provider_name] = (
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provider_details_dict[provider_name].to_dict())
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update_provider_details = common.UpdateProviderDetailTask()
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update_provider_details.execute(provider_details_dict,
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project_id,
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service_id)
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else:
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LOG.warn('Sleeping for {0} seconds and '
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'retrying'.format(retry_sleep_time))
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if retry_sleep_time is not None:
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time.sleep(retry_sleep_time)
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class GatherProviderDetailsTask(task.Task):
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default_provides = "provider_details_dict"
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def execute(self, responders, dns_responder, provider_details):
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provider_details = json.loads(provider_details)
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for provider in provider_details:
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provider_details[provider] = (
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req_provider_details.load_from_json(provider_details[provider])
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)
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for responder in responders:
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provider_name = list(responder.items())[0][0]
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if 'error' in responder[provider_name]:
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LOG.info('Delete service from {0}'
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'failed'.format(provider_name))
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# stores the error info for debugging purposes.
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provider_details[provider_name].error_info = (
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responder[provider_name].get('error_info'))
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elif 'error' in dns_responder[provider_name]:
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LOG.info('Delete service from DNS failed')
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# stores the error info for debugging purposes.
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provider_details[provider_name].error_info = (
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dns_responder[provider_name].get('error_info'))
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if 'error_class' in dns_responder[provider_name]:
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# stores the error class for debugging purposes.
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provider_details[provider_name].error_class = (
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dns_responder[provider_name].get('error_class'))
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else:
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# delete service successful, remove this provider detail record
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del provider_details[provider_name]
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for provider in provider_details:
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provider_details[provider] = provider_details[provider].to_dict()
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return provider_details
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class DeleteStorageServiceTask(task.Task):
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def execute(self, project_id, service_id):
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service_controller, self.storage_controller = \
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memoized_controllers.task_controllers('poppy', 'storage')
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self.storage_controller.delete(project_id, service_id)
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def revert(self, *args, **kwargs):
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try:
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if getattr(self, 'storage_controller') \
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and self.storage_controller._driver.session:
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self.storage_controller._driver.close_connection()
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LOG.info('Cassandra session being shutdown')
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except AttributeError:
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LOG.info('Cassandra session already shutdown')
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