353 lines
13 KiB
Python
353 lines
13 KiB
Python
# Copyright 2014 Mirantis Inc.
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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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Handles all requests relating to volumes + cinder.
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"""
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import copy
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import sys
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from cinderclient import exceptions as cinder_exception
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from cinderclient import service_catalog
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from cinderclient.v1 import client as cinder_client
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from oslo.config import cfg
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from manila.db import base
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from manila import exception
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from manila.openstack.common import log as logging
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cinder_opts = [
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cfg.StrOpt('cinder_catalog_info',
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default='volume:cinder:publicURL',
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help='Info to match when looking for cinder in the service '
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'catalog. Format is separated values of the form: '
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'<service_type>:<service_name>:<endpoint_type>'),
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cfg.StrOpt('os_region_name',
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help='Region name of this node.'),
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cfg.StrOpt('cinder_ca_certificates_file',
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help='Location of CA certificates file to use for cinder '
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'client requests.'),
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cfg.IntOpt('cinder_http_retries',
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default=3,
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help='Number of cinderclient retries on failed HTTP calls.'),
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cfg.BoolOpt('cinder_api_insecure',
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default=False,
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help='Allow to perform insecure SSL requests to cinder.'),
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cfg.BoolOpt('cinder_cross_az_attach',
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default=True,
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help='Allow attaching between instances and volumes in '
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'different availability zones.'),
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cfg.StrOpt('cinder_admin_username',
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default='cinder',
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help='Cinder admin username.'),
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cfg.StrOpt('cinder_admin_password',
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help='Cinder admin password.'),
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cfg.StrOpt('cinder_admin_tenant_name',
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default='service',
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help='Cinder admin tenant name.'),
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cfg.StrOpt('cinder_admin_auth_url',
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default='http://localhost:5000/v2.0',
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help='Identity service URL.')
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]
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CONF = cfg.CONF
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CONF.register_opts(cinder_opts)
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LOG = logging.getLogger(__name__)
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def cinderclient(context):
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if context.is_admin and context.project_id is None:
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c = cinder_client.Client(CONF.cinder_admin_username,
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CONF.cinder_admin_password,
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CONF.cinder_admin_tenant_name,
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CONF.cinder_admin_auth_url,
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retries=CONF.cinder_http_retries,)
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c.authenticate()
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return c
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compat_catalog = {
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'access': {'serviceCatalog': context.service_catalog or []}
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}
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sc = service_catalog.ServiceCatalog(compat_catalog)
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info = CONF.cinder_catalog_info
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service_type, service_name, endpoint_type = info.split(':')
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# extract the region if set in configuration
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if CONF.os_region_name:
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attr = 'region'
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filter_value = CONF.os_region_name
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else:
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attr = None
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filter_value = None
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url = sc.url_for(attr=attr,
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filter_value=filter_value,
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service_type=service_type,
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service_name=service_name,
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endpoint_type=endpoint_type)
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LOG.debug('Cinderclient connection created using URL: %s' % url)
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c = cinder_client.Client(context.user_id,
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context.auth_token,
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project_id=context.project_id,
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auth_url=url,
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insecure=CONF.cinder_api_insecure,
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retries=CONF.cinder_http_retries,
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cacert=CONF.cinder_ca_certificates_file)
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# noauth extracts user_id:project_id from auth_token
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c.client.auth_token = context.auth_token or '%s:%s' % (context.user_id,
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context.project_id)
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c.client.management_url = url
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return c
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def _untranslate_volume_summary_view(context, vol):
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"""Maps keys for volumes summary view."""
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d = {}
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d['id'] = vol.id
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d['status'] = vol.status
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d['size'] = vol.size
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d['availability_zone'] = vol.availability_zone
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d['created_at'] = vol.created_at
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d['attach_time'] = ""
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d['mountpoint'] = ""
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if vol.attachments:
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att = vol.attachments[0]
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d['attach_status'] = 'attached'
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d['instance_uuid'] = att['server_id']
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d['mountpoint'] = att['device']
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else:
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d['attach_status'] = 'detached'
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d['display_name'] = vol.display_name
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d['display_description'] = vol.display_description
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d['volume_type_id'] = vol.volume_type
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d['snapshot_id'] = vol.snapshot_id
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d['volume_metadata'] = {}
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for key, value in vol.metadata.items():
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d['volume_metadata'][key] = value
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if hasattr(vol, 'volume_image_metadata'):
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d['volume_image_metadata'] = copy.deepcopy(vol.volume_image_metadata)
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return d
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def _untranslate_snapshot_summary_view(context, snapshot):
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"""Maps keys for snapshots summary view."""
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d = {}
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d['id'] = snapshot.id
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d['status'] = snapshot.status
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d['progress'] = snapshot.progress
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d['size'] = snapshot.size
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d['created_at'] = snapshot.created_at
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d['display_name'] = snapshot.display_name
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d['display_description'] = snapshot.display_description
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d['volume_id'] = snapshot.volume_id
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d['project_id'] = snapshot.project_id
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d['volume_size'] = snapshot.size
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return d
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def translate_volume_exception(method):
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"""Transforms the exception for the volume, keeps its traceback intact."""
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def wrapper(self, ctx, volume_id, *args, **kwargs):
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try:
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res = method(self, ctx, volume_id, *args, **kwargs)
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except cinder_exception.ClientException:
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exc_type, exc_value, exc_trace = sys.exc_info()
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if isinstance(exc_value, cinder_exception.NotFound):
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exc_value = exception.VolumeNotFound(volume_id=volume_id)
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elif isinstance(exc_value, cinder_exception.BadRequest):
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exc_value = exception.InvalidInput(reason=exc_value.message)
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raise exc_value, None, exc_trace
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return res
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return wrapper
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def translate_snapshot_exception(method):
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"""Transforms the exception for the snapshot.
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Note: Keeps its traceback intact.
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"""
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def wrapper(self, ctx, snapshot_id, *args, **kwargs):
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try:
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res = method(self, ctx, snapshot_id, *args, **kwargs)
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except cinder_exception.ClientException:
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exc_type, exc_value, exc_trace = sys.exc_info()
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if isinstance(exc_value, cinder_exception.NotFound):
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exc_value = (
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exception.VolumeSnapshotNotFound(snapshot_id=snapshot_id))
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raise exc_value, None, exc_trace
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return res
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return wrapper
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class API(base.Base):
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"""API for interacting with the volume manager."""
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@translate_volume_exception
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def get(self, context, volume_id):
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item = cinderclient(context).volumes.get(volume_id)
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return _untranslate_volume_summary_view(context, item)
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def get_all(self, context, search_opts={}):
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items = cinderclient(context).volumes.list(detailed=True,
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search_opts=search_opts)
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rval = []
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for item in items:
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rval.append(_untranslate_volume_summary_view(context, item))
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return rval
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def check_attached(self, context, volume):
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"""Raise exception if volume in use."""
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if volume['status'] != "in-use":
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msg = _("status must be 'in-use'")
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raise exception.InvalidVolume(reason=msg)
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def check_attach(self, context, volume, instance=None):
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if volume['status'] != "available":
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msg = _("status must be 'available'")
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raise exception.InvalidVolume(reason=msg)
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if volume['attach_status'] == "attached":
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msg = _("already attached")
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raise exception.InvalidVolume(reason=msg)
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if instance and not CONF.cinder_cross_az_attach:
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if instance['availability_zone'] != volume['availability_zone']:
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msg = _("Instance and volume not in same availability_zone")
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raise exception.InvalidVolume(reason=msg)
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def check_detach(self, context, volume):
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if volume['status'] == "available":
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msg = _("already detached")
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raise exception.InvalidVolume(reason=msg)
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@translate_volume_exception
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def reserve_volume(self, context, volume_id):
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cinderclient(context).volumes.reserve(volume_id)
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@translate_volume_exception
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def unreserve_volume(self, context, volume_id):
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cinderclient(context).volumes.unreserve(volume_id)
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@translate_volume_exception
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def begin_detaching(self, context, volume_id):
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cinderclient(context).volumes.begin_detaching(volume_id)
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@translate_volume_exception
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def roll_detaching(self, context, volume_id):
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cinderclient(context).volumes.roll_detaching(volume_id)
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@translate_volume_exception
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def attach(self, context, volume_id, instance_uuid, mountpoint):
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cinderclient(context).volumes.attach(volume_id, instance_uuid,
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mountpoint)
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@translate_volume_exception
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def detach(self, context, volume_id):
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cinderclient(context).volumes.detach(volume_id)
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@translate_volume_exception
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def initialize_connection(self, context, volume_id, connector):
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return cinderclient(context).volumes.initialize_connection(volume_id,
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connector)
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@translate_volume_exception
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def terminate_connection(self, context, volume_id, connector):
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return cinderclient(context).volumes.terminate_connection(volume_id,
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connector)
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def create(self, context, size, name, description, snapshot=None,
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image_id=None, volume_type=None, metadata=None,
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availability_zone=None):
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if snapshot is not None:
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snapshot_id = snapshot['id']
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else:
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snapshot_id = None
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kwargs = dict(snapshot_id=snapshot_id,
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display_name=name,
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display_description=description,
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volume_type=volume_type,
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user_id=context.user_id,
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project_id=context.project_id,
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availability_zone=availability_zone,
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metadata=metadata,
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imageRef=image_id)
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try:
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item = cinderclient(context).volumes.create(size, **kwargs)
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return _untranslate_volume_summary_view(context, item)
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except cinder_exception.BadRequest as e:
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raise exception.InvalidInput(reason=e.message)
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@translate_volume_exception
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def delete(self, context, volume_id):
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cinderclient(context).volumes.delete(volume_id)
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@translate_volume_exception
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def update(self, context, volume_id, fields):
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raise NotImplementedError()
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def get_volume_encryption_metadata(self, context, volume_id):
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return cinderclient(context).volumes.get_encryption_metadata(volume_id)
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@translate_snapshot_exception
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def get_snapshot(self, context, snapshot_id):
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item = cinderclient(context).volume_snapshots.get(snapshot_id)
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return _untranslate_snapshot_summary_view(context, item)
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def get_all_snapshots(self, context, search_opts=None):
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items = cinderclient(context).volume_snapshots.list(
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detailed=True,
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search_opts=search_opts)
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rvals = []
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for item in items:
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rvals.append(_untranslate_snapshot_summary_view(context, item))
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return rvals
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@translate_volume_exception
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def create_snapshot(self, context, volume_id, name, description):
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item = cinderclient(context).volume_snapshots.create(volume_id,
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False,
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name,
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description)
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return _untranslate_snapshot_summary_view(context, item)
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@translate_volume_exception
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def create_snapshot_force(self, context, volume_id, name, description):
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item = cinderclient(context).volume_snapshots.create(volume_id,
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True,
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name,
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description)
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return _untranslate_snapshot_summary_view(context, item)
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@translate_snapshot_exception
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def delete_snapshot(self, context, snapshot_id):
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cinderclient(context).volume_snapshots.delete(snapshot_id)
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