80 lines
2.9 KiB
Python
80 lines
2.9 KiB
Python
#
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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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from oslo_log import log as logging
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from heat.common.i18n import _
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from heat.common.i18n import _LI
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from heat.engine import resource
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LOG = logging.getLogger(__name__)
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class VolumeAttachTask(object):
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"""A task for attaching a volume to a Nova server."""
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def __init__(self, stack, server_id, volume_id, device):
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"""
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Initialise with the stack (for obtaining the clients), ID of the
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server and volume, and the device name on the server.
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"""
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self.clients = stack.clients
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self.server_id = server_id
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self.volume_id = volume_id
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self.device = device
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self.attachment_id = None
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def __str__(self):
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"""Return a human-readable string description of the task."""
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return 'Attaching Volume %s to Instance %s as %s' % (self.volume_id,
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self.server_id,
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self.device)
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def __repr__(self):
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"""Return a brief string description of the task."""
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return '%s(%s -> %s [%s])' % (type(self).__name__,
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self.volume_id,
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self.server_id,
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self.device)
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def __call__(self):
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"""Return a co-routine which runs the task."""
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LOG.debug(str(self))
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va = self.clients.client('nova').volumes.create_server_volume(
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server_id=self.server_id,
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volume_id=self.volume_id,
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device=self.device)
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self.attachment_id = va.id
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yield
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cinder = self.clients.client('cinder')
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vol = cinder.volumes.get(self.volume_id)
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while vol.status == 'available' or vol.status == 'attaching':
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LOG.debug('%(name)s - volume status: %(status)s'
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% {'name': str(self), 'status': vol.status})
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yield
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vol = cinder.volumes.get(self.volume_id)
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if vol.status != 'in-use':
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LOG.info(_LI("Attachment failed - volume %(vol)s "
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"is in %(status)s status"),
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{"vol": vol.id,
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"status": vol.status})
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raise resource.ResourceUnknownStatus(
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resource_status=vol.status,
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result=_('Volume attachment failed'))
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LOG.info(_LI('%s - complete'), str(self))
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