439 lines
13 KiB
Python
439 lines
13 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# All Rights Reserved.
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#
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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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"""
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Defines interface for DB access
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"""
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from nova import exception
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from nova import flags
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from nova import utils
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FLAGS = flags.FLAGS
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flags.DEFINE_string('db_backend', 'sqlalchemy',
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'The backend to use for db')
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_impl = utils.LazyPluggable(FLAGS['db_backend'],
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sqlalchemy='nova.db.sqlalchemy.api')
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# TODO(vish): where should these exceptions go?
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class NoMoreAddresses(exception.Error):
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"""No more available addresses"""
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pass
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class NoMoreBlades(exception.Error):
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"""No more available blades"""
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pass
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class NoMoreNetworks(exception.Error):
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"""No more available networks"""
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pass
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###################
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def daemon_get(context, daemon_id):
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"""Get an daemon or raise if it does not exist."""
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return _impl.daemon_get(context, daemon_id)
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def daemon_get_by_args(context, host, binary):
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"""Get the state of an daemon by node name and binary."""
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return _impl.daemon_get_by_args(context, host, binary)
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def daemon_create(context, values):
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"""Create a daemon from the values dictionary."""
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return _impl.daemon_create(context, values)
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def daemon_update(context, daemon_id, values):
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"""Set the given properties on an daemon and update it.
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Raises NotFound if daemon does not exist.
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"""
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return _impl.daemon_update(context, daemon_id, values)
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###################
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def floating_ip_allocate_address(context, host, project_id):
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"""Allocate free floating ip and return the address.
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Raises if one is not available.
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"""
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return _impl.floating_ip_allocate_address(context, host, project_id)
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def floating_ip_create(context, address, host):
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"""Create a floating ip for a given address on the specified host."""
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return _impl.floating_ip_create(context, address, host)
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def floating_ip_disassociate(context, address):
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"""Disassociate an floating ip from a fixed ip by address.
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Returns the address of the existing fixed ip.
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"""
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return _impl.floating_ip_disassociate(context, address)
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def floating_ip_deallocate(context, address):
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"""Deallocate an floating ip by address"""
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return _impl.floating_ip_deallocate(context, address)
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def floating_ip_fixed_ip_associate(context, floating_address, fixed_address):
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"""Associate an floating ip to a fixed_ip by address."""
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return _impl.floating_ip_fixed_ip_associate(context,
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floating_address,
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fixed_address)
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def floating_ip_get_by_address(context, address):
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"""Get a floating ip by address or raise if it doesn't exist."""
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return _impl.floating_ip_get_by_address(context, address)
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def floating_ip_get_instance(context, address):
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"""Get an instance for a floating ip by address."""
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return _impl.floating_ip_get_instance(context, address)
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####################
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def fixed_ip_allocate(context, network_id):
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"""Allocate free fixed ip and return the address.
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Raises if one is not available.
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"""
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return _impl.fixed_ip_allocate(context, network_id)
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def fixed_ip_create(context, values):
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"""Create a fixed ip from the values dictionary."""
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return _impl.fixed_ip_create(context, values)
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def fixed_ip_deallocate(context, address):
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"""Deallocate a fixed ip by address."""
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return _impl.fixed_ip_deallocate(context, address)
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def fixed_ip_get_by_address(context, address):
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"""Get a fixed ip by address or raise if it does not exist."""
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return _impl.fixed_ip_get_by_address(context, address)
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def fixed_ip_get_instance(context, address):
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"""Get an instance for a fixed ip by address."""
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return _impl.fixed_ip_get_instance(context, address)
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def fixed_ip_get_network(context, address):
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"""Get a network for a fixed ip by address."""
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return _impl.fixed_ip_get_network(context, address)
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def fixed_ip_instance_associate(context, address, instance_id):
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"""Associate a fixed ip to an instance by address."""
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return _impl.fixed_ip_instance_associate(context, address, instance_id)
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def fixed_ip_instance_disassociate(context, address):
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"""Disassociate a fixed ip from an instance by address."""
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return _impl.fixed_ip_instance_disassociate(context, address)
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def fixed_ip_update(context, address, values):
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"""Create a fixed ip from the values dictionary."""
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return _impl.fixed_ip_update(context, address, values)
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####################
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def instance_create(context, values):
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"""Create an instance from the values dictionary."""
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return _impl.instance_create(context, values)
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def instance_destroy(context, instance_id):
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"""Destroy the instance or raise if it does not exist."""
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return _impl.instance_destroy(context, instance_id)
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def instance_get(context, instance_id):
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"""Get an instance or raise if it does not exist."""
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return _impl.instance_get(context, instance_id)
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def instance_get_all(context):
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"""Get all instances."""
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return _impl.instance_get_all(context)
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def instance_get_by_project(context, project_id):
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"""Get all instance belonging to a project."""
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return _impl.instance_get_by_project(context, project_id)
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def instance_get_by_reservation(context, reservation_id):
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"""Get all instance belonging to a reservation."""
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return _impl.instance_get_by_reservation(context, reservation_id)
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def instance_get_fixed_address(context, instance_id):
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"""Get the fixed ip address of an instance."""
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return _impl.instance_get_fixed_address(context, instance_id)
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def instance_get_floating_address(context, instance_id):
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"""Get the first floating ip address of an instance."""
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return _impl.instance_get_floating_address(context, instance_id)
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def instance_get_by_str(context, str_id):
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"""Get an instance by string id."""
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return _impl.instance_get_by_str(context, str_id)
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def instance_get_host(context, instance_id):
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"""Get the host that the instance is running on."""
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return _impl.instance_get_host(context, instance_id)
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def instance_is_vpn(context, instance_id):
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"""True if instance is a vpn."""
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return _impl.instance_is_vpn(context, instance_id)
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def instance_state(context, instance_id, state, description=None):
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"""Set the state of an instance."""
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return _impl.instance_state(context, instance_id, state, description)
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def instance_update(context, instance_id, values):
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"""Set the given properties on an instance and update it.
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Raises NotFound if instance does not exist.
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"""
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return _impl.instance_update(context, instance_id, values)
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####################
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def network_count(context):
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"""Return the number of networks."""
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return _impl.network_count(context)
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def network_count_allocated_ips(context, network_id):
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"""Return the number of allocated non-reserved ips in the network."""
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return _impl.network_count_allocated_ips(context, network_id)
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def network_count_available_ips(context, network_id):
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"""Return the number of available ips in the network."""
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return _impl.network_count_available_ips(context, network_id)
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def network_count_reserved_ips(context, network_id):
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"""Return the number of reserved ips in the network."""
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return _impl.network_count_reserved_ips(context, network_id)
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def network_create(context, values):
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"""Create a network from the values dictionary."""
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return _impl.network_create(context, values)
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def network_create_fixed_ips(context, network_id, num_vpn_clients):
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"""Create the ips for the network, reserving sepecified ips."""
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return _impl.network_create_fixed_ips(context, network_id, num_vpn_clients)
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def network_destroy(context, network_id):
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"""Destroy the network or raise if it does not exist."""
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return _impl.network_destroy(context, network_id)
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def network_get(context, network_id):
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"""Get an network or raise if it does not exist."""
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return _impl.network_get(context, network_id)
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def network_get_associated_fixed_ips(context, network_id):
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"""Get all network's ips that have been associated."""
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return _impl.network_get_associated_fixed_ips(context, network_id)
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def network_get_by_bridge(context, bridge):
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"""Get an network or raise if it does not exist."""
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return _impl.network_get_by_bridge(context, bridge)
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def network_get_host(context, network_id):
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"""Get host assigned to network or raise"""
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return _impl.network_get_host(context, network_id)
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def network_get_index(context, network_id):
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"""Get non-conflicting index for network"""
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return _impl.network_get_index(context, network_id)
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def network_get_vpn_ip(context, network_id):
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"""Get non-conflicting index for network"""
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return _impl.network_get_vpn_ip(context, network_id)
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def network_index_count(context):
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"""Return count of network indexes"""
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return _impl.network_index_count(context)
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def network_index_create(context, values):
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"""Create a network index from the values dict"""
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return _impl.network_index_create(context, values)
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def network_set_cidr(context, network_id, cidr):
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"""Set the Classless Inner Domain Routing for the network"""
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return _impl.network_set_cidr(context, network_id, cidr)
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def network_set_host(context, network_id, host_id):
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"""Safely set the host for network"""
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return _impl.network_set_host(context, network_id, host_id)
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def network_update(context, network_id, values):
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"""Set the given properties on an network and update it.
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Raises NotFound if network does not exist.
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"""
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return _impl.network_update(context, network_id, values)
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###################
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def project_get_network(context, project_id):
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"""Return the network associated with the project."""
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return _impl.project_get_network(context, project_id)
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###################
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def queue_get_for(context, topic, physical_node_id):
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"""Return a channel to send a message to a node with a topic."""
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return _impl.queue_get_for(context, topic, physical_node_id)
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###################
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def export_device_count(context):
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"""Return count of export devices."""
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return _impl.export_device_count(context)
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def export_device_create(context, values):
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"""Create an export_device from the values dictionary."""
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return _impl.export_device_create(context, values)
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###################
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def volume_allocate_shelf_and_blade(context, volume_id):
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"""Atomically allocate a free shelf and blade from the pool."""
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return _impl.volume_allocate_shelf_and_blade(context, volume_id)
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def volume_attached(context, volume_id, instance_id, mountpoint):
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"""Ensure that a volume is set as attached."""
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return _impl.volume_attached(context, volume_id, instance_id, mountpoint)
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def volume_create(context, values):
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"""Create a volume from the values dictionary."""
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return _impl.volume_create(context, values)
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def volume_destroy(context, volume_id):
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"""Destroy the volume or raise if it does not exist."""
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return _impl.volume_destroy(context, volume_id)
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def volume_detached(context, volume_id):
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"""Ensure that a volume is set as detached."""
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return _impl.volume_detached(context, volume_id)
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def volume_get(context, volume_id):
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"""Get a volume or raise if it does not exist."""
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return _impl.volume_get(context, volume_id)
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def volume_get_all(context):
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"""Get all volumes."""
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return _impl.volume_get_all(context)
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def volume_get_by_project(context, project_id):
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"""Get all volumes belonging to a project."""
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return _impl.volume_get_by_project(context, project_id)
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def volume_get_by_str(context, str_id):
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"""Get a volume by string id."""
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return _impl.volume_get_by_str(context, str_id)
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def volume_get_host(context, volume_id):
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"""Get the host that the volume is running on."""
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return _impl.volume_get_host(context, volume_id)
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def volume_get_shelf_and_blade(context, volume_id):
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"""Get the shelf and blade allocated to the volume."""
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return _impl.volume_get_shelf_and_blade(context, volume_id)
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def volume_update(context, volume_id, values):
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"""Set the given properties on an volume and update it.
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Raises NotFound if volume does not exist.
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"""
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return _impl.volume_update(context, volume_id, values)
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