370 lines
14 KiB
Python
370 lines
14 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright 2010 United States Government as represented by the
|
|
# Administrator of the National Aeronautics and Space Administration.
|
|
# All Rights Reserved.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
|
|
"""
|
|
Handles all requests relating to volumes + cinder.
|
|
"""
|
|
|
|
import copy
|
|
import sys
|
|
|
|
from cinderclient import exceptions as cinder_exception
|
|
from cinderclient import service_catalog
|
|
from cinderclient.v1 import client as cinder_client
|
|
from oslo.config import cfg
|
|
|
|
from nova.db import base
|
|
from nova import exception
|
|
from nova.openstack.common import log as logging
|
|
|
|
cinder_opts = [
|
|
cfg.StrOpt('cinder_catalog_info',
|
|
default='volume:cinder:publicURL',
|
|
help='Info to match when looking for cinder in the service '
|
|
'catalog. Format is : separated values of the form: '
|
|
'<service_type>:<service_name>:<endpoint_type>'),
|
|
cfg.StrOpt('cinder_endpoint_template',
|
|
default=None,
|
|
help='Override service catalog lookup with template for cinder '
|
|
'endpoint e.g. http://localhost:8776/v1/%(project_id)s'),
|
|
cfg.StrOpt('os_region_name',
|
|
default=None,
|
|
help='region name of this node'),
|
|
cfg.StrOpt('cinder_ca_certificates_file',
|
|
default=None,
|
|
help='Location of ca certicates file to use for cinder client '
|
|
'requests.'),
|
|
cfg.IntOpt('cinder_http_retries',
|
|
default=3,
|
|
help='Number of cinderclient retries on failed http calls'),
|
|
cfg.BoolOpt('cinder_api_insecure',
|
|
default=False,
|
|
help='Allow to perform insecure SSL requests to cinder'),
|
|
cfg.BoolOpt('cinder_cross_az_attach',
|
|
default=True,
|
|
help='Allow attach between instance and volume in different '
|
|
'availability zones.'),
|
|
]
|
|
|
|
CONF = cfg.CONF
|
|
CONF.register_opts(cinder_opts)
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
def cinderclient(context):
|
|
|
|
# FIXME: the cinderclient ServiceCatalog object is mis-named.
|
|
# It actually contains the entire access blob.
|
|
# Only needed parts of the service catalog are passed in, see
|
|
# nova/context.py.
|
|
compat_catalog = {
|
|
'access': {'serviceCatalog': context.service_catalog or []}
|
|
}
|
|
sc = service_catalog.ServiceCatalog(compat_catalog)
|
|
if CONF.cinder_endpoint_template:
|
|
url = CONF.cinder_endpoint_template % context.to_dict()
|
|
else:
|
|
info = CONF.cinder_catalog_info
|
|
service_type, service_name, endpoint_type = info.split(':')
|
|
# extract the region if set in configuration
|
|
if CONF.os_region_name:
|
|
attr = 'region'
|
|
filter_value = CONF.os_region_name
|
|
else:
|
|
attr = None
|
|
filter_value = None
|
|
url = sc.url_for(attr=attr,
|
|
filter_value=filter_value,
|
|
service_type=service_type,
|
|
service_name=service_name,
|
|
endpoint_type=endpoint_type)
|
|
|
|
LOG.debug(_('Cinderclient connection created using URL: %s') % url)
|
|
|
|
c = cinder_client.Client(context.user_id,
|
|
context.auth_token,
|
|
project_id=context.project_id,
|
|
auth_url=url,
|
|
insecure=CONF.cinder_api_insecure,
|
|
retries=CONF.cinder_http_retries,
|
|
cacert=CONF.cinder_ca_certificates_file)
|
|
# noauth extracts user_id:project_id from auth_token
|
|
c.client.auth_token = context.auth_token or '%s:%s' % (context.user_id,
|
|
context.project_id)
|
|
c.client.management_url = url
|
|
return c
|
|
|
|
|
|
def _untranslate_volume_summary_view(context, vol):
|
|
"""Maps keys for volumes summary view."""
|
|
d = {}
|
|
d['id'] = vol.id
|
|
d['status'] = vol.status
|
|
d['size'] = vol.size
|
|
d['availability_zone'] = vol.availability_zone
|
|
d['created_at'] = vol.created_at
|
|
|
|
# TODO(jdg): The calling code expects attach_time and
|
|
# mountpoint to be set. When the calling
|
|
# code is more defensive this can be
|
|
# removed.
|
|
d['attach_time'] = ""
|
|
d['mountpoint'] = ""
|
|
|
|
if vol.attachments:
|
|
att = vol.attachments[0]
|
|
d['attach_status'] = 'attached'
|
|
d['instance_uuid'] = att['server_id']
|
|
d['mountpoint'] = att['device']
|
|
else:
|
|
d['attach_status'] = 'detached'
|
|
|
|
d['display_name'] = vol.display_name
|
|
d['display_description'] = vol.display_description
|
|
|
|
# TODO(jdg): Information may be lost in this translation
|
|
d['volume_type_id'] = vol.volume_type
|
|
d['snapshot_id'] = vol.snapshot_id
|
|
|
|
d['volume_metadata'] = []
|
|
for key, value in vol.metadata.items():
|
|
item = {}
|
|
item['key'] = key
|
|
item['value'] = value
|
|
d['volume_metadata'].append(item)
|
|
|
|
if hasattr(vol, 'volume_image_metadata'):
|
|
d['volume_image_metadata'] = copy.deepcopy(vol.volume_image_metadata)
|
|
|
|
return d
|
|
|
|
|
|
def _untranslate_snapshot_summary_view(context, snapshot):
|
|
"""Maps keys for snapshots summary view."""
|
|
d = {}
|
|
|
|
d['id'] = snapshot.id
|
|
d['status'] = snapshot.status
|
|
d['progress'] = snapshot.progress
|
|
d['size'] = snapshot.size
|
|
d['created_at'] = snapshot.created_at
|
|
d['display_name'] = snapshot.display_name
|
|
d['display_description'] = snapshot.display_description
|
|
d['volume_id'] = snapshot.volume_id
|
|
d['project_id'] = snapshot.project_id
|
|
d['volume_size'] = snapshot.size
|
|
|
|
return d
|
|
|
|
|
|
def translate_volume_exception(method):
|
|
"""Transforms the exception for the volume but keeps its traceback intact.
|
|
"""
|
|
def wrapper(self, ctx, volume_id, *args, **kwargs):
|
|
try:
|
|
res = method(self, ctx, volume_id, *args, **kwargs)
|
|
except cinder_exception.ClientException:
|
|
exc_type, exc_value, exc_trace = sys.exc_info()
|
|
if isinstance(exc_value, cinder_exception.NotFound):
|
|
exc_value = exception.VolumeNotFound(volume_id=volume_id)
|
|
elif isinstance(exc_value, cinder_exception.BadRequest):
|
|
exc_value = exception.InvalidInput(reason=exc_value.message)
|
|
raise exc_value, None, exc_trace
|
|
return res
|
|
return wrapper
|
|
|
|
|
|
def translate_snapshot_exception(method):
|
|
"""Transforms the exception for the snapshot but keeps its traceback
|
|
intact.
|
|
"""
|
|
def wrapper(self, ctx, snapshot_id, *args, **kwargs):
|
|
try:
|
|
res = method(self, ctx, snapshot_id, *args, **kwargs)
|
|
except cinder_exception.ClientException:
|
|
exc_type, exc_value, exc_trace = sys.exc_info()
|
|
if isinstance(exc_value, cinder_exception.NotFound):
|
|
exc_value = exception.SnapshotNotFound(snapshot_id=snapshot_id)
|
|
raise exc_value, None, exc_trace
|
|
return res
|
|
return wrapper
|
|
|
|
|
|
class API(base.Base):
|
|
"""API for interacting with the volume manager."""
|
|
|
|
@translate_volume_exception
|
|
def get(self, context, volume_id):
|
|
item = cinderclient(context).volumes.get(volume_id)
|
|
return _untranslate_volume_summary_view(context, item)
|
|
|
|
def get_all(self, context, search_opts={}):
|
|
items = cinderclient(context).volumes.list(detailed=True)
|
|
rval = []
|
|
|
|
for item in items:
|
|
rval.append(_untranslate_volume_summary_view(context, item))
|
|
|
|
return rval
|
|
|
|
def check_attached(self, context, volume):
|
|
"""Raise exception if volume in use."""
|
|
if volume['status'] != "in-use":
|
|
msg = _("status must be 'in-use'")
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
def check_attach(self, context, volume, instance=None):
|
|
# TODO(vish): abstract status checking?
|
|
if volume['status'] != "available":
|
|
msg = _("status must be 'available'")
|
|
raise exception.InvalidVolume(reason=msg)
|
|
if volume['attach_status'] == "attached":
|
|
msg = _("already attached")
|
|
raise exception.InvalidVolume(reason=msg)
|
|
if instance and not CONF.cinder_cross_az_attach:
|
|
if instance['availability_zone'] != volume['availability_zone']:
|
|
msg = _("Instance and volume not in same availability_zone")
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
def check_detach(self, context, volume):
|
|
# TODO(vish): abstract status checking?
|
|
if volume['status'] == "available":
|
|
msg = _("already detached")
|
|
raise exception.InvalidVolume(reason=msg)
|
|
|
|
@translate_volume_exception
|
|
def reserve_volume(self, context, volume_id):
|
|
cinderclient(context).volumes.reserve(volume_id)
|
|
|
|
@translate_volume_exception
|
|
def unreserve_volume(self, context, volume_id):
|
|
cinderclient(context).volumes.unreserve(volume_id)
|
|
|
|
@translate_volume_exception
|
|
def begin_detaching(self, context, volume_id):
|
|
cinderclient(context).volumes.begin_detaching(volume_id)
|
|
|
|
@translate_volume_exception
|
|
def roll_detaching(self, context, volume_id):
|
|
cinderclient(context).volumes.roll_detaching(volume_id)
|
|
|
|
@translate_volume_exception
|
|
def attach(self, context, volume_id, instance_uuid, mountpoint):
|
|
cinderclient(context).volumes.attach(volume_id, instance_uuid,
|
|
mountpoint)
|
|
|
|
@translate_volume_exception
|
|
def detach(self, context, volume_id):
|
|
cinderclient(context).volumes.detach(volume_id)
|
|
|
|
@translate_volume_exception
|
|
def initialize_connection(self, context, volume_id, connector):
|
|
return cinderclient(context).volumes.initialize_connection(volume_id,
|
|
connector)
|
|
|
|
@translate_volume_exception
|
|
def terminate_connection(self, context, volume_id, connector):
|
|
return cinderclient(context).volumes.terminate_connection(volume_id,
|
|
connector)
|
|
|
|
def create(self, context, size, name, description, snapshot=None,
|
|
image_id=None, volume_type=None, metadata=None,
|
|
availability_zone=None):
|
|
|
|
if snapshot is not None:
|
|
snapshot_id = snapshot['id']
|
|
else:
|
|
snapshot_id = None
|
|
|
|
kwargs = dict(snapshot_id=snapshot_id,
|
|
display_name=name,
|
|
display_description=description,
|
|
volume_type=volume_type,
|
|
user_id=context.user_id,
|
|
project_id=context.project_id,
|
|
availability_zone=availability_zone,
|
|
metadata=metadata,
|
|
imageRef=image_id)
|
|
|
|
try:
|
|
item = cinderclient(context).volumes.create(size, **kwargs)
|
|
return _untranslate_volume_summary_view(context, item)
|
|
except cinder_exception.BadRequest as e:
|
|
raise exception.InvalidInput(reason=e.message)
|
|
|
|
@translate_volume_exception
|
|
def delete(self, context, volume_id):
|
|
cinderclient(context).volumes.delete(volume_id)
|
|
|
|
@translate_volume_exception
|
|
def update(self, context, volume_id, fields):
|
|
raise NotImplementedError()
|
|
|
|
@translate_snapshot_exception
|
|
def get_snapshot(self, context, snapshot_id):
|
|
item = cinderclient(context).volume_snapshots.get(snapshot_id)
|
|
return _untranslate_snapshot_summary_view(context, item)
|
|
|
|
def get_all_snapshots(self, context):
|
|
items = cinderclient(context).volume_snapshots.list(detailed=True)
|
|
rvals = []
|
|
|
|
for item in items:
|
|
rvals.append(_untranslate_snapshot_summary_view(context, item))
|
|
|
|
return rvals
|
|
|
|
@translate_volume_exception
|
|
def create_snapshot(self, context, volume_id, name, description):
|
|
item = cinderclient(context).volume_snapshots.create(volume_id,
|
|
False,
|
|
name,
|
|
description)
|
|
return _untranslate_snapshot_summary_view(context, item)
|
|
|
|
@translate_volume_exception
|
|
def create_snapshot_force(self, context, volume_id, name, description):
|
|
item = cinderclient(context).volume_snapshots.create(volume_id,
|
|
True,
|
|
name,
|
|
description)
|
|
|
|
return _untranslate_snapshot_summary_view(context, item)
|
|
|
|
@translate_snapshot_exception
|
|
def delete_snapshot(self, context, snapshot_id):
|
|
cinderclient(context).volume_snapshots.delete(snapshot_id)
|
|
|
|
@translate_volume_exception
|
|
def get_volume_metadata(self, context, volume_id):
|
|
raise NotImplementedError()
|
|
|
|
@translate_volume_exception
|
|
def delete_volume_metadata(self, context, volume_id, key):
|
|
raise NotImplementedError()
|
|
|
|
@translate_volume_exception
|
|
def update_volume_metadata(self, context, volume_id,
|
|
metadata, delete=False):
|
|
raise NotImplementedError()
|
|
|
|
@translate_volume_exception
|
|
def get_volume_metadata_value(self, volume_id, key):
|
|
raise NotImplementedError()
|