def __init__(
self, volume_attachments_client=None, volumes_client=None,
volume_attachments_config=None, volumes_config=None):
self.client = volume_attachments_client
self.config = volume_attachments_config or VolumeAttachmentsAPIConfig()
self.volumes_client = volumes_client
self.volumes_behaviors = VolumesAPI_Behaviors(volumes_client)
self.volumes_config = volumes_config or VolumesAPIConfig()
class VolumeAttachmentsAPI_Behaviors(BaseBehavior):
def __init__(
self, volume_attachments_client=None, volumes_client=None,
volume_attachments_config=None, volumes_config=None):
self.client = volume_attachments_client
self.config = volume_attachments_config or VolumeAttachmentsAPIConfig()
self.volumes_client = volumes_client
self.volumes_behaviors = VolumesAPI_Behaviors(volumes_client)
self.volumes_config = volumes_config or VolumesAPIConfig()
@behavior(VolumeAttachmentsAPIClient)
def wait_for_attachment_to_propagate(
self, attachment_id, server_id, timeout=None, poll_rate=5):
timeout = timeout or self.config.attachment_propagation_timeout
poll_rate = poll_rate or self.config.api_poll_rate
endtime = time() + int(timeout)
while time() < endtime:
resp = self.client.get_volume_attachment_details(
attachment_id, server_id)
if resp.ok:
return True
sleep(poll_rate)
else:
return False
@behavior(VolumesClient)
def verify_volume_status_progression_during_attachment(
self, volume_id, state_list=None):
# (status, transient, timeout, poll_rate)
state_list = [
('available', True, 5, 0),
('attaching', False, 30, 1),
('in-use', False, 60, 5)]
self.volumes_behaviors.verify_volume_status_progression(
volume_id, state_list)
@behavior(VolumeAttachmentsAPIClient, VolumesClient)
def attach_volume_to_server(
self, server_id, volume_id, device=None,
attachment_propagation_timeout=60):
"""Returns a VolumeAttachment object"""
attachment_propagation_timeout = (
attachment_propagation_timeout
or self.config.attachment_propagation_timeout)
resp = self.client.attach_volume(server_id, volume_id, device=device)
if not resp.ok:
raise VolumeAttachmentBehaviorError(
"Volume attachment failed in auto_attach_volume_to_server"
" with a {0}. Could not attach volume {1} to server {2}"
.format(resp.status_code, volume_id, server_id))
if resp.entity is None:
raise VolumeAttachmentBehaviorError(
"Volume attachment failed in auto_attach_volume_to_server."
" Could not deserialize volume attachment response body. Could"
" not attach volume {1} to server {2}".format(
volume_id, server_id))
attachment = resp.entity
#Confirm volume attachment propagation
propagated = self.wait_for_attachment_to_propagate(
attachment.id_, server_id, timeout=attachment_propagation_timeout)
if not propagated:
raise VolumeAttachmentBehaviorError(
"Volume attachment {0} belonging to server {1} failed to"
"propagate to the relevant cell within {2} seconds".format(
attachment.id_, server_id, attachment_propagation_timeout))
# Confirm volume status progression
self.verify_volume_status_progression_during_attachment(volume_id)
return attachment