120 lines
4.2 KiB
Python
120 lines
4.2 KiB
Python
# (c) Copyright 2012-2014 Hewlett-Packard Development Company, L.P.
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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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#
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"""
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Utility functions related to the Zone Manager.
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"""
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import logging
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from oslo_log import log
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from cinder.i18n import _LI, _LW
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from cinder.volume import configuration
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from cinder.volume import manager
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from cinder.zonemanager import fc_san_lookup_service
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from cinder.zonemanager import fc_zone_manager
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LOG = log.getLogger(__name__)
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LOG.logger.setLevel(logging.DEBUG)
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def create_zone_manager():
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"""If zoning is enabled, build the Zone Manager."""
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config = configuration.Configuration(manager.volume_manager_opts)
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LOG.debug("Zoning mode: %s.", config.safe_get('zoning_mode'))
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if config.safe_get('zoning_mode') == 'fabric':
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LOG.debug("FC Zone Manager enabled.")
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zm = fc_zone_manager.ZoneManager()
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LOG.info(_LI("Using FC Zone Manager %(zm_version)s,"
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" Driver %(drv_name)s %(drv_version)s."),
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{'zm_version': zm.get_version(),
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'drv_name': zm.driver.__class__.__name__,
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'drv_version': zm.driver.get_version()})
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return zm
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else:
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LOG.debug("FC Zone Manager not enabled in cinder.conf.")
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return None
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def create_lookup_service():
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config = configuration.Configuration(manager.volume_manager_opts)
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LOG.debug("Zoning mode: %s.", config.safe_get('zoning_mode'))
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if config.safe_get('zoning_mode') == 'fabric':
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LOG.debug("FC Lookup Service enabled.")
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lookup = fc_san_lookup_service.FCSanLookupService()
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LOG.info(_LI("Using FC lookup service %s."), lookup.lookup_service)
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return lookup
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else:
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LOG.debug("FC Lookup Service not enabled in cinder.conf.")
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return None
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def get_formatted_wwn(wwn_str):
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"""Utility API that formats WWN to insert ':'."""
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if (len(wwn_str) != 16):
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return wwn_str.lower()
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else:
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return (':'.join([wwn_str[i:i + 2]
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for i in range(0, len(wwn_str), 2)])).lower()
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def AddFCZone(initialize_connection):
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"""Decorator to add a FC Zone."""
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def decorator(self, *args, **kwargs):
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conn_info = initialize_connection(self, *args, **kwargs)
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if not conn_info:
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LOG.warning(_LW("Driver didn't return connection info, "
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"can't add zone."))
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return None
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vol_type = conn_info.get('driver_volume_type', None)
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if vol_type == 'fibre_channel':
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if 'initiator_target_map' in conn_info['data']:
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zm = create_zone_manager()
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if zm:
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LOG.debug("AddFCZone connection info: %(conninfo)s.",
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{'conninfo': conn_info})
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zm.add_connection(conn_info)
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return conn_info
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return decorator
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def RemoveFCZone(terminate_connection):
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"""Decorator for FC drivers to remove zone."""
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def decorator(self, *args, **kwargs):
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conn_info = terminate_connection(self, *args, **kwargs)
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if not conn_info:
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LOG.warning(_LW("Driver didn't return connection info from "
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"terminate_connection call."))
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return None
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vol_type = conn_info.get('driver_volume_type', None)
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if vol_type == 'fibre_channel':
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if 'initiator_target_map' in conn_info['data']:
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zm = create_zone_manager()
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if zm:
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LOG.debug("RemoveFCZone connection info: %(conninfo)s.",
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{'conninfo': conn_info})
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zm.delete_connection(conn_info)
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return conn_info
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return decorator
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