230f115d34
The Cisco FC Zoning plugin allows for the automated creation, deletion and modification of zones in zonesets. The Cisco FC zoning plugin supports both basic and enhanced zoning and supports vsans. Implements: blueprint cisco-fc-zone-driver Change-Id: Icf176b6f46f1b1662f0a99ffaa226789661f611e
121 lines
4.3 KiB
Python
121 lines
4.3 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 cinder.i18n import _
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from cinder.openstack.common import log
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from cinder.volume.configuration 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(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(configuration=config)
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LOG.info(_("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(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(configuration=config)
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LOG.info(_("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.warn(_("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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init_target_map = conn_info['data']['initiator_target_map']
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zm = create_zone_manager()
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if zm:
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LOG.debug("Add FC Zone for mapping '%s'." %
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init_target_map)
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zm.add_connection(init_target_map)
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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.warn(_("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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init_target_map = conn_info['data']['initiator_target_map']
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zm = create_zone_manager()
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if zm:
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LOG.debug("Remove FC Zone for mapping '%s'." %
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init_target_map)
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zm.delete_connection(init_target_map)
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return conn_info
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return decorator
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