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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# Copyright 2011 Justin Santa Barbara
# All Rights Reserved.
# Copyright (c) 2010 Citrix Systems, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""Power state is the state we get by calling virt driver on a particular
domain. The hypervisor is always considered the authority on the status
of a particular VM, and the power_state in the DB should be viewed as a
snapshot of the VMs's state in the (recent) past. It can be periodically
updated, and should also be updated at the end of a task if the task is
supposed to affect power_state.
"""
# NOTE(maoy): These are *not* virDomainState values from libvirt.
# The hex value happens to match virDomainState for backward-compatibility
# reasons.
NOSTATE = 0x00
RUNNING = 0x01
PAUSED = 0x03
SHUTDOWN = 0x04 # the VM is powered off
CRASHED = 0x06
SUSPENDED = 0x07
# TODO(maoy): BUILDING state is only used in bare metal case and should
# eventually be removed/cleaned up. NOSTATE is probably enough.
BUILDING = 0x09
# TODO(justinsb): Power state really needs to be a proper class,
# so that we're not locked into the libvirt status codes and can put mapping
# logic here rather than spread throughout the code
_STATE_MAP = {
NOSTATE: 'pending',
RUNNING: 'running',
PAUSED: 'paused',
SHUTDOWN: 'shutdown',
CRASHED: 'crashed',
SUSPENDED: 'suspended',
BUILDING: 'building',
}
def name(code):
return _STATE_MAP[code]
def valid_states():
return _STATE_MAP.keys()
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