69 lines
2.7 KiB
Python
69 lines
2.7 KiB
Python
# copyright (c) 2016 Industrial Technology Research Institute.
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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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"""Class for DISCO to attach and detach volume."""
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from os_brick.initiator import connector
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from oslo_log import log as logging
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from cinder import utils
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LOG = logging.getLogger(__name__)
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class AttachDetachDiscoVolume(object):
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"""Class for attach and detach a DISCO volume."""
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def __init__(self, configuration):
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"""Init volume attachment class."""
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self.configuration = configuration
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self.connector = connector.InitiatorConnector.factory(
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self._get_connector_identifier(), utils.get_root_helper(),
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device_scan_attempts=(
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self.configuration.num_volume_device_scan_tries)
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)
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self.connection_conf = {}
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self.connection_conf['server_ip'] = self.configuration.disco_client
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self.connection_conf['server_port'] = (
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self.configuration.disco_client_port)
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self.connection_properties = {}
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self.connection_properties['name'] = None
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self.connection_properties['disco_id'] = None
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self.connection_properties['conf'] = self.connection_conf
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def _get_connection_properties(self, volume):
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"""Return a dictionnary with the connection properties."""
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connection_properties = dict(self.connection_properties)
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connection_properties['name'] = volume['name']
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connection_properties['disco_id'] = volume['provider_location']
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return connection_properties
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def _get_connector_identifier(self):
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"""Return connector identifier, put here to mock it in unit tests."""
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return connector.DISCO
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def _attach_volume(self, volume):
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"""Call the connector.connect_volume()."""
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connection_properties = self._get_connection_properties(volume)
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device_info = self.connector.connect_volume(connection_properties)
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return device_info
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def _detach_volume(self, volume):
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"""Call the connector.disconnect_volume()."""
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connection_properties = self._get_connection_properties(volume)
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self.connector.disconnect_volume(connection_properties, volume)
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