def _get_umount_chain(driver, instance_id, volume_id, detach_task=None):
driverCls = driver.__class__
provider = driver.provider
identity = driver.identity
pre_umount_status = update_volume_metadata.si(
driverCls, provider, identity,
volume_id, {'tmp_status': 'unmounting'})
umount = umount_task.si(
driver.__class__, driver.provider, driver.identity,
instance_id, volume_id)
post_umount_status = update_volume_metadata.si(
driverCls, provider, identity,
volume_id, {'tmp_status': '',
'mount_location': ''})
pre_umount_status.link_error(
mount_failed.s(
driverCls, provider, identity, volume_id, True))
umount.link_error(
mount_failed.s(
driverCls, provider, identity, volume_id, True))
post_umount_status.link_error(
mount_failed.s(
driverCls, provider, identity, volume_id, True))
pre_umount_status.link(umount)
umount.link(post_umount_status)
if detach_task:
post_umount_status.link(detach_task)
return pre_umount_status
def _get_umount_chain(driver, instance_id, volume_id, detach_task=None):
driverCls = driver.__class__
provider = driver.provider
identity = driver.identity
pre_umount_status = update_volume_metadata.si(
driverCls, provider, identity,
volume_id, {'tmp_status':'unmounting'})
umount= umount_task.si(
driver.__class__, driver.provider, driver.identity,
instance_id, volume_id)
post_umount_status = update_volume_metadata.si(
driverCls, provider, identity,
volume_id, {'tmp_status':'',
'mount_location':''})
pre_umount_status.link_error(
mount_failed.s(
driverCls, provider, identity, volume_id, True))
umount.link_error(
mount_failed.s(
driverCls, provider, identity, volume_id, True))
post_umount_status.link_error(
mount_failed.s(
driverCls, provider, identity, volume_id, True))
pre_umount_status.link(umount)
umount.link(post_umount_status)
if detach_task:
post_umount_status.link(detach_task)
return pre_umount_status