290 lines
11 KiB
Python
290 lines
11 KiB
Python
# Copyright 2015 Hewlett Packard Development Company, L.P.
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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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"""HP 3PAR Driver for OpenStack Manila."""
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import hashlib
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import inspect
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import logging
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import os
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from oslo_config import cfg
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from oslo_log import log
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import six
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from manila import exception
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from manila.i18n import _
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from manila.i18n import _LI
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from manila.share import driver
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from manila.share.drivers.hp import hp_3par_mediator
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HP3PAR_OPTS = [
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cfg.StrOpt('hp3par_api_url',
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default='',
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help="3PAR WSAPI Server Url like "
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"https://<3par ip>:8080/api/v1"),
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cfg.StrOpt('hp3par_san_ip',
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default='',
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help="IP address of SAN controller"),
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cfg.StrOpt('hp3par_san_login',
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default='',
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help="Username for SAN controller"),
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cfg.StrOpt('hp3par_san_password',
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default='',
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help="Password for SAN controller",
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secret=True),
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cfg.IntOpt('hp3par_san_ssh_port',
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default=22,
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help='SSH port to use with SAN'),
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cfg.StrOpt('hp3par_fpg',
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default="OpenStack",
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help="The File Provisioning Group (FPG) to use"),
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cfg.StrOpt('hp3par_share_ip_address',
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default='',
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help="The IP address for shares not using a share server"),
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cfg.BoolOpt('hp3par_fstore_per_share',
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default=False,
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help="Use one filestore per share"),
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cfg.BoolOpt('hp3par_debug',
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default=False,
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help="Enable HTTP debugging to 3PAR"),
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]
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CONF = cfg.CONF
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CONF.register_opts(HP3PAR_OPTS)
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LOG = log.getLogger(__name__)
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class HP3ParShareDriver(driver.ShareDriver):
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"""HP 3PAR driver for Manila.
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Supports NFS and CIFS protocols on arrays with File Persona.
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"""
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VERSION = "1.0.00"
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def __init__(self, *args, **kwargs):
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super(HP3ParShareDriver, self).__init__(False, *args, **kwargs)
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self.configuration = kwargs.get('configuration', None)
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self.configuration.append_config_values(HP3PAR_OPTS)
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self.configuration.append_config_values(driver.ssh_opts)
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self.fpg = None
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self.vfs = None
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self.share_ip_address = None
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self._hp3par = None # mediator between driver and client
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def do_setup(self, context):
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"""Any initialization the share driver does while starting."""
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LOG.info(_LI("Starting share driver %(driver_name)s (%(version)s)"),
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{'driver_name': self.__class__.__name__,
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'version': self.VERSION})
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self.share_ip_address = self.configuration.hp3par_share_ip_address
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if not self.share_ip_address:
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raise exception.HP3ParInvalid(
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_("Unsupported configuration. "
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"hp3par_share_ip_address is not set."))
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mediator = hp_3par_mediator.HP3ParMediator(
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hp3par_api_url=self.configuration.hp3par_api_url,
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hp3par_debug=self.configuration.hp3par_debug,
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hp3par_san_ip=self.configuration.hp3par_san_ip,
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hp3par_san_login=self.configuration.hp3par_san_login,
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hp3par_san_password=self.configuration.hp3par_san_password,
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hp3par_san_ssh_port=self.configuration.hp3par_san_ssh_port,
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hp3par_fstore_per_share=self.configuration.hp3par_fstore_per_share,
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ssh_conn_timeout=self.configuration.ssh_conn_timeout,
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)
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mediator.do_setup()
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# FPG must be configured and must exist.
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self.fpg = self.configuration.safe_get('hp3par_fpg')
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# Validate the FPG and discover the VFS
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# This also validates the client, connection, firmware, WSAPI, FPG...
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self.vfs = mediator.get_vfs_name(self.fpg)
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# Don't set _hp3par until it is ready. Otherwise _update_stats fails.
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self._hp3par = mediator
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def check_for_setup_error(self):
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try:
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# Log the source SHA for support. Only do this with DEBUG.
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if LOG.isEnabledFor(logging.DEBUG):
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LOG.debug('HP3ParShareDriver SHA1: %s',
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self.sha1_hash(HP3ParShareDriver))
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LOG.debug('HP3ParMediator SHA1: %s',
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self.sha1_hash(hp_3par_mediator.HP3ParMediator))
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except Exception as e:
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# Don't let any exceptions during the SHA1 logging interfere
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# with startup. This is just debug info to identify the source
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# code. If it doesn't work, just log a debug message.
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LOG.debug('Source code SHA1 not logged due to: %s',
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six.text_type(e))
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@staticmethod
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def sha1_hash(clazz):
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"""Get the SHA1 hash for the source of a class."""
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source_file = inspect.getsourcefile(clazz)
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file_size = os.path.getsize(source_file)
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sha1 = hashlib.sha1()
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sha1.update(("blob %u\0" % file_size).encode('utf-8'))
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with open(source_file, 'rb') as f:
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sha1.update(f.read())
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return sha1.hexdigest()
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@staticmethod
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def _build_export_location(protocol, ip, path):
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if protocol == 'NFS':
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location = ':'.join((ip, path))
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elif protocol == 'CIFS':
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location = '\\\\%s\%s' % (ip, path)
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else:
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message = _('Invalid protocol. Expected NFS or CIFS. '
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'Got %s.') % protocol
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raise exception.InvalidInput(message)
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return location
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def create_share(self, context, share, share_server=None):
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"""Is called to create share."""
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ip = self.share_ip_address
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protocol = share['share_proto']
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path = self._hp3par.create_share(
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share['project_id'],
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share['id'],
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protocol,
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self.fpg, self.vfs,
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size=share['size']
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)
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return self._build_export_location(protocol, ip, path)
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def create_share_from_snapshot(self, context, share, snapshot,
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share_server=None):
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"""Is called to create share from snapshot."""
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ip = self.share_ip_address
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protocol = share['share_proto']
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path = self._hp3par.create_share_from_snapshot(
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share['id'],
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protocol,
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snapshot['share']['project_id'],
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snapshot['share']['id'],
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snapshot['share']['share_proto'],
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snapshot['id'],
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self.fpg,
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self.vfs
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)
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return self._build_export_location(protocol, ip, path)
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def delete_share(self, context, share, share_server=None):
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"""Deletes share and its fstore."""
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self._hp3par.delete_share(share['project_id'],
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share['id'],
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share['share_proto'],
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self.fpg,
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self.vfs)
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def create_snapshot(self, context, snapshot, share_server=None):
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"""Creates a snapshot of a share."""
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self._hp3par.create_snapshot(snapshot['share']['project_id'],
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snapshot['share']['id'],
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snapshot['share']['share_proto'],
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snapshot['id'],
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self.fpg,
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self.vfs)
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def delete_snapshot(self, context, snapshot, share_server=None):
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"""Deletes a snapshot of a share."""
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self._hp3par.delete_snapshot(snapshot['share']['project_id'],
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snapshot['share']['id'],
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snapshot['share']['share_proto'],
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snapshot['id'],
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self.fpg,
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self.vfs)
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def ensure_share(self, context, share, share_server=None):
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pass
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def allow_access(self, context, share, access, share_server=None):
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"""Allow access to the share."""
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self._hp3par.allow_access(share['project_id'],
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share['id'],
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share['share_proto'],
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access['access_type'],
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access['access_to'],
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self.fpg,
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self.vfs)
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def deny_access(self, context, share, access, share_server=None):
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"""Deny access to the share."""
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self._hp3par.deny_access(share['project_id'],
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share['id'],
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share['share_proto'],
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access['access_type'],
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access['access_to'],
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self.fpg,
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self.vfs)
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def _update_share_stats(self):
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"""Retrieve stats info from share group."""
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if not self._hp3par:
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LOG.info(
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_LI("Skipping share statistics update. Setup has not "
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"completed."))
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total_capacity_gb = 0
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free_capacity_gb = 0
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else:
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capacity_stats = self._hp3par.get_capacity(self.fpg)
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LOG.debug("Share capacity = %s.", capacity_stats)
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total_capacity_gb = capacity_stats['total_capacity_gb']
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free_capacity_gb = capacity_stats['free_capacity_gb']
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backend_name = self.configuration.safe_get(
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'share_backend_name') or "HP_3PAR"
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reserved_share_percentage = self.configuration.safe_get(
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'reserved_share_percentage')
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if reserved_share_percentage is None:
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reserved_share_percentage = 0
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stats = {
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'share_backend_name': backend_name,
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'driver_handles_share_servers': self.driver_handles_share_servers,
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'vendor_name': 'HP',
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'driver_version': self.VERSION,
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'storage_protocol': 'NFS_CIFS',
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'total_capacity_gb': total_capacity_gb,
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'free_capacity_gb': free_capacity_gb,
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'reserved_percentage': reserved_share_percentage,
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'QoS_support': False,
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}
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super(HP3ParShareDriver, self)._update_share_stats(stats)
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