def create_snapshot(context, volume_id, description=None):
volume = ec2utils.get_db_item(context, volume_id)
cinder = clients.cinder(context)
os_volume = cinder.volumes.get(volume['os_id'])
# NOTE(ft): Easy fix to allow snapshot creation in statuses other than
# AVAILABLE without cinder modifications. Potential race condition
# though. Seems arguably non-fatal.
if os_volume.status not in [
'available', 'in-use', 'attaching', 'detaching'
]:
msg = (_("'%s' is not in a state where snapshots are allowed.") %
volume_id)
raise exception.IncorrectState(reason=msg)
with common.OnCrashCleaner() as cleaner:
os_snapshot = cinder.volume_snapshots.create(
os_volume.id, force=True, display_description=description)
cleaner.addCleanup(os_snapshot.delete)
snapshot = db_api.add_item(context, 'snap', {'os_id': os_snapshot.id})
cleaner.addCleanup(db_api.delete_item, context, snapshot['id'])
os_snapshot.update(display_name=snapshot['id'])
return _format_snapshot(context,
snapshot,
os_snapshot,
volume_id=volume_id)
def describe_image_attribute(context, image_id, attribute):
def _block_device_mapping_attribute(os_image, image, result):
properties = ec2utils.deserialize_os_image_properties(os_image)
mappings = _format_mappings(context, properties)
if mappings:
result['blockDeviceMapping'] = mappings
def _description_attribute(os_image, image, result):
result['description'] = {'value': image.get('description')}
def _launch_permission_attribute(os_image, image, result):
result['launchPermission'] = []
if os_image.is_public:
result['launchPermission'].append({'group': 'all'})
def _kernel_attribute(os_image, image, result):
kernel_id = os_image.properties.get('kernel_id')
if kernel_id:
result['kernel'] = {
'value': ec2utils.os_id_to_ec2_id(context, 'aki', kernel_id)
}
def _ramdisk_attribute(os_image, image, result):
ramdisk_id = os_image.properties.get('ramdisk_id')
if ramdisk_id:
result['ramdisk'] = {
'value': ec2utils.os_id_to_ec2_id(context, 'ari', ramdisk_id)
}
# NOTE(ft): Openstack extension, AWS-incompability
def _root_device_name_attribute(os_image, image, result):
properties = ec2utils.deserialize_os_image_properties(os_image)
result['rootDeviceName'] = (
ec2utils.block_device_properties_root_device_name(properties))
supported_attributes = {
'blockDeviceMapping': _block_device_mapping_attribute,
'description': _description_attribute,
'launchPermission': _launch_permission_attribute,
'kernel': _kernel_attribute,
'ramdisk': _ramdisk_attribute,
# NOTE(ft): Openstack extension, AWS-incompability
'rootDeviceName': _root_device_name_attribute,
}
fn = supported_attributes.get(attribute)
if fn is None:
raise exception.InvalidRequest()
os_image = ec2utils.get_os_image(context, image_id)
if not os_image:
# TODO(ft): figure out corresponding AWS error
raise exception.IncorrectState(
reason='Image is still being created or failed')
_check_owner(context, os_image)
image = ec2utils.get_db_item(context, image_id)
result = {'imageId': image_id}
fn(os_image, image, result)
return result
def detach_volume(context,
volume_id,
instance_id=None,
device=None,
force=None):
#volume = ec2utils.get_db_item(context, volume_id)
cinder = clients.cinder(context)
os_volume = cinder.volumes.get(volume_id)
os_instance_id = next(iter(os_volume.attachments), {}).get('server_id')
if not os_instance_id:
# TODO(ft): Change the message with the real AWS message
reason = _('Volume %(vol_id)s is not attached to anything')
raise exception.IncorrectState(reason=reason % {'vol_id': volume_id})
nova = clients.nova(context)
nova.volumes.delete_server_volume(os_instance_id, os_volume.id)
os_volume.get()
instance_id = next((i['id'] for i in db_api.get_items(context, 'i')
if i['os_id'] == os_instance_id), None)
# [varun]: Sending delete on termination as false (last param below)
# when volume is detached delete on termination flag does not make sense
# therefore sending false to make consistent with AWS
return _format_attachment(context,
os_volume,
instance_id=instance_id,
delete_on_termination_flag=False)
def delete_vpn_gateway(context, vpn_gateway_id):
vpn_gateway = ec2utils.get_db_item(context, vpn_gateway_id)
vpn_connections = db_api.get_items(context, 'vpn')
if vpn_gateway['vpc_id'] or any(vpn['vpn_gateway_id'] == vpn_gateway['id']
for vpn in vpn_connections):
raise exception.IncorrectState(reason=_('The VPN gateway is in use.'))
db_api.delete_item(context, vpn_gateway['id'])
return True
def delete_customer_gateway(context, customer_gateway_id):
customer_gateway = ec2utils.get_db_item(context, customer_gateway_id)
vpn_connections = db_api.get_items(context, 'vpn')
if any(vpn['customer_gateway_id'] == customer_gateway['id']
for vpn in vpn_connections):
raise exception.IncorrectState(
reason=_('The customer gateway is in use.'))
db_api.delete_item(context, customer_gateway['id'])
return True
def deregister_image(context, image_id):
os_image = ec2utils.get_os_image(context, image_id)
if not os_image:
image = db_api.get_item_by_id(context, image_id)
if image.get('state') != 'failed':
# TODO(ft): figure out corresponding AWS error
raise exception.IncorrectState(
reason='Image is still being created')
else:
_check_owner(context, os_image)
glance = clients.glance(context)
try:
glance.images.delete(os_image.id)
except glance_exception.HTTPNotFound:
pass
db_api.delete_item(context, image_id)
return True
def detach_volume(context,
volume_id,
instance_id=None,
device=None,
force=None):
volume = ec2utils.get_db_item(context, volume_id)
cinder = clients.cinder(context)
os_volume = cinder.volumes.get(volume['os_id'])
os_instance_id = next(iter(os_volume.attachments), {}).get('server_id')
if not os_instance_id:
# TODO(ft): Change the message with the real AWS message
reason = _('Volume %(vol_id)s is not attached to anything')
raise exception.IncorrectState(reason=reason % {'vol_id': volume_id})
nova = clients.nova(context)
nova.volumes.delete_server_volume(os_instance_id, os_volume.id)
os_volume.get()
instance_id = next((i['id'] for i in db_api.get_items(context, 'i')
if i['os_id'] == os_instance_id), None)
return _format_attachment(context,
volume,
os_volume,
instance_id=instance_id)
def modify_image_attribute(context,
image_id,
attribute=None,
user_group=None,
operation_type=None,
description=None,
launch_permission=None,
product_code=None,
user_id=None,
value=None):
os_image = ec2utils.get_os_image(context, image_id)
if not os_image:
# TODO(ft): figure out corresponding AWS error
raise exception.IncorrectState(
reason='Image is still being created or failed')
attributes = set()
# NOTE(andrey-mp): launchPermission structure is converted here
# to plain parameters: attribute, user_group, operation_type, user_id
if launch_permission is not None:
attributes.add('launchPermission')
user_group = list()
user_id = list()
if len(launch_permission) == 0:
msg = _('No operation specified for launchPermission attribute.')
raise exception.InvalidParameterCombination(msg)
if len(launch_permission) > 1:
msg = _('Only one operation can be specified.')
raise exception.InvalidParameterCombination(msg)
operation_type, permissions = launch_permission.popitem()
for index_key in permissions:
permission = permissions[index_key]
if 'group' in permission:
user_group.append(permission['group'])
if 'user_id' in permission:
user_id.append(permission['user_id'])
if attribute == 'launchPermission':
attributes.add('launchPermission')
if description is not None:
attributes.add('description')
value = description
if attribute == 'description':
attributes.add('description')
# check attributes
if len(attributes) == 0:
if product_code is not None:
attribute = 'productCodes'
if attribute in [
'kernel', 'ramdisk', 'productCodes', 'blockDeviceMapping'
]:
raise exception.InvalidParameter(
_('Parameter %s is invalid. '
'The attribute is not supported.') % attribute)
raise exception.InvalidParameterCombination('No attributes specified.')
if len(attributes) > 1:
raise exception.InvalidParameterCombination(
_('Fields for multiple attribute types specified: %s') %
str(attributes))
if 'launchPermission' in attributes:
if not user_group:
msg = _('No operation specified for launchPermission attribute.')
raise exception.InvalidParameterCombination(msg)
if len(user_group) != 1 and user_group[0] != 'all':
msg = _('only group "all" is supported')
raise exception.InvalidParameterValue(parameter='UserGroup',
value=user_group,
reason=msg)
if operation_type not in ['add', 'remove']:
msg = _('operation_type must be add or remove')
raise exception.InvalidParameterValue(parameter='OperationType',
value='operation_type',
reason=msg)
_check_owner(context, os_image)
os_image.update(is_public=(operation_type == 'add'))
return True
if 'description' in attributes:
if not value:
raise exception.MissingParameter(
'The request must contain the parameter description')
_check_owner(context, os_image)
image = ec2utils.get_db_item(context, image_id)
image['description'] = value
db_api.update_item(context, image)
return True
def create_image(context,
instance_id,
name=None,
description=None,
no_reboot=False,
block_device_mapping=None):
instance = ec2utils.get_db_item(context, instance_id)
if not instance_api._is_ebs_instance(context, instance['os_id']):
msg = _('Instance does not have a volume attached at root (null).')
raise exception.InvalidParameterValue(value=instance_id,
parameter='InstanceId',
reason=msg)
nova = clients.nova(context)
os_instance = nova.servers.get(instance['os_id'])
restart_instance = False
if not no_reboot and os_instance.status != 'SHUTOFF':
if os_instance.status != 'ACTIVE':
# TODO(ft): Change the error code and message with the real AWS
# ones
msg = _('Instance must be run or stopped')
raise exception.IncorrectState(reason=msg)
restart_instance = True
# meaningful image name
name_map = dict(instance=instance['os_id'], now=timeutils.isotime())
name = name or _('image of %(instance)s at %(now)s') % name_map
def delayed_create(context, image, name, os_instance):
try:
os_instance.stop()
# wait instance for really stopped
start_time = time.time()
while os_instance.status != 'SHUTOFF':
time.sleep(1)
os_instance.get()
# NOTE(yamahata): timeout and error. 1 hour for now for safety.
# Is it too short/long?
# Or is there any better way?
timeout = 1 * 60 * 60
if time.time() > start_time + timeout:
err = (_("Couldn't stop instance within %d sec") % timeout)
raise exception.EC2Exception(message=err)
# NOTE(ft): create an image with ec2_id metadata to let other code
# link os and db objects in race conditions
os_image_id = os_instance.create_image(
name, metadata={'ec2_id': image['id']})
image['os_id'] = os_image_id
db_api.update_item(context, image)
except Exception:
LOG.exception(_LE('Failed to complete image %s creation'),
image.id)
try:
image['state'] = 'failed'
db_api.update_item(context, image)
except Exception:
LOG.warning(_LW("Couldn't set 'failed' state for db image %s"),
image.id,
exc_info=True)
try:
os_instance.start()
except Exception:
LOG.warning(_LW('Failed to start instance %(i_id)s after '
'completed creation of image %(image_id)s'), {
'i_id': instance['id'],
'image_id': image['id']
},
exc_info=True)
image = {'is_public': False, 'description': description}
if restart_instance:
# NOTE(ft): image type is hardcoded, because we don't know it now,
# but cannot change it later. But Nova doesn't specify container format
# for snapshots of volume backed instances, so that it is 'ami' in fact
image = db_api.add_item(context, 'ami', image)
eventlet.spawn_n(delayed_create, context, image, name, os_instance)
else:
glance = clients.glance(context)
with common.OnCrashCleaner() as cleaner:
os_image_id = os_instance.create_image(name)
cleaner.addCleanup(glance.images.delete, os_image_id)
# TODO(andrey-mp): snapshot and volume also must be deleted in case
# of error
os_image = glance.images.get(os_image_id)
image['os_id'] = os_image_id
image = db_api.add_item(context, _get_os_image_kind(os_image),
image)
return {'imageId': image['id']}
def create_image(context,
instance_id,
name=None,
description=None,
no_reboot=False,
block_device_mapping=None):
instance = ec2utils.get_db_item(context, instance_id)
if not instance_api._is_ebs_instance(context, instance['os_id']):
msg = _('Instance does not have a volume attached at root (null).')
raise exception.InvalidParameterValue(value=instance_id,
parameter='InstanceId',
reason=msg)
nova = clients.nova(context)
os_instance = nova.servers.get(instance['os_id'])
restart_instance = False
if not no_reboot and os_instance.status != 'SHUTOFF':
if os_instance.status != 'ACTIVE':
# TODO(ft): Change the error code and message with the real AWS
# ones
msg = _('Instance must be run or stopped')
raise exception.IncorrectState(reason=msg)
restart_instance = True
os_instance.stop()
# wait instance for really stopped
start_time = time.time()
while os_instance.status != 'SHUTOFF':
time.sleep(1)
os_instance.get()
# NOTE(yamahata): timeout and error. 1 hour for now for safety.
# Is it too short/long?
# Or is there any better way?
timeout = 1 * 60 * 60
if time.time() > start_time + timeout:
err = _("Couldn't stop instance within %d sec") % timeout
raise exception.EC2Exception(message=err)
# meaningful image name
name_map = dict(instance=instance['os_id'], now=timeutils.isotime())
name = name or _('image of %(instance)s at %(now)s') % name_map
glance = clients.glance(context)
with common.OnCrashCleaner() as cleaner:
os_image_id = os_instance.create_image(name)
cleaner.addCleanup(glance.images.delete, os_image_id)
# TODO(andrey-mp): snapshot and volume also must be deleted in case
# of error
os_image = glance.images.get(os_image_id)
image = db_api.add_item(context, _get_os_image_kind(os_image), {
'os_id': os_image_id,
'is_public': False,
'description': description
})
if restart_instance:
os_instance.start()
return {'imageId': image['id']}
