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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.
# 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.
"""
A fake (in-memory) hypervisor+api.
Allows nova testing w/o a hypervisor. This module also documents the
semantics of real hypervisor connections.
"""
from nova.compute import power_state
from nova import db
from nova import exception
from nova.openstack.common import log as logging
from nova.virt import driver
LOG = logging.getLogger(__name__)
class FakeInstance(object):
def __init__(self, name, state):
self.name = name
self.state = state
def __getitem__(self, key):
return getattr(self, key)
class FakeDriver(driver.ComputeDriver):
"""Fake hypervisor driver"""
def __init__(self, read_only=False):
self.instances = {}
self.host_status = {
'host_name-description': 'Fake Host',
'host_hostname': 'fake-mini',
'host_memory_total': 8000000000,
'host_memory_overhead': 10000000,
'host_memory_free': 7900000000,
'host_memory_free_computed': 7900000000,
'host_other_config': {},
'host_ip_address': '192.168.1.109',
'host_cpu_info': {},
'disk_available': 500000000000,
'disk_total': 600000000000,
'disk_used': 100000000000,
'host_uuid': 'cedb9b39-9388-41df-8891-c5c9a0c0fe5f',
'host_name_label': 'fake-mini'}
self._mounts = {}
def init_host(self, host):
return
def list_instances(self):
return self.instances.keys()
def plug_vifs(self, instance, network_info):
"""Plug VIFs into networks."""
pass
def unplug_vifs(self, instance, network_info):
"""Unplug VIFs from networks."""
pass
def spawn(self, context, instance, image_meta, injected_files,
admin_password, network_info=None, block_device_info=None):
name = instance['name']
state = power_state.RUNNING
fake_instance = FakeInstance(name, state)
self.instances[name] = fake_instance
def snapshot(self, context, instance, name):
if not instance['name'] in self.instances:
raise exception.InstanceNotRunning()
def reboot(self, instance, network_info, reboot_type,
block_device_info=None):
pass
@staticmethod
def get_host_ip_addr():
return '192.168.0.1'
def set_admin_password(self, instance, new_pass):
pass
def inject_file(self, instance, b64_path, b64_contents):
pass
def resume_state_on_host_boot(self, context, instance, network_info,
block_device_info=None):
pass
def rescue(self, context, instance, network_info, image_meta,
rescue_password):
pass
def unrescue(self, instance, network_info):
pass
def poll_rebooting_instances(self, timeout):
pass
def poll_rescued_instances(self, timeout):
pass
def migrate_disk_and_power_off(self, context, instance, dest,
instance_type, network_info):
pass
def finish_revert_migration(self, instance, network_info):
pass
def power_off(self, instance):
pass
def power_on(self, instance):
pass
def pause(self, instance):
pass
def unpause(self, instance):
pass
def suspend(self, instance):
pass
def resume(self, instance):
pass
def destroy(self, instance, network_info, block_device_info=None):
key = instance['name']
if key in self.instances:
del self.instances[key]
else:
LOG.warning("Key '%s' not in instances '%s'" %
(key, self.instances), instance=instance)
def attach_volume(self, connection_info, instance_name, mountpoint):
"""Attach the disk to the instance at mountpoint using info"""
if not instance_name in self._mounts:
self._mounts[instance_name] = {}
self._mounts[instance_name][mountpoint] = connection_info
return True
def detach_volume(self, connection_info, instance_name, mountpoint):
"""Detach the disk attached to the instance"""
try:
del self._mounts[instance_name][mountpoint]
except KeyError:
pass
return True
def get_info(self, instance):
if instance['name'] not in self.instances:
raise exception.InstanceNotFound(instance_id=instance['name'])
i = self.instances[instance['name']]
return {'state': i.state,
'max_mem': 0,
'mem': 0,
'num_cpu': 2,
'cpu_time': 0}
def get_diagnostics(self, instance_name):
return 'FAKE_DIAGNOSTICS'
def get_all_bw_usage(self, instances, start_time, stop_time=None):
"""Return bandwidth usage info for each interface on each
running VM"""
bwusage = []
return bwusage
def block_stats(self, instance_name, disk_id):
return [0L, 0L, 0L, 0L, None]
def interface_stats(self, instance_name, iface_id):
return [0L, 0L, 0L, 0L, 0L, 0L, 0L, 0L]
def get_console_output(self, instance):
return 'FAKE CONSOLE OUTPUT\nANOTHER\nLAST LINE'
def get_vnc_console(self, instance):
return {'internal_access_path': 'FAKE',
'host': 'fakevncconsole.com',
'port': 6969}
def get_console_pool_info(self, console_type):
return {'address': '127.0.0.1',
'username': 'fakeuser',
'password': 'fakepassword'}
def refresh_security_group_rules(self, security_group_id):
return True
def refresh_security_group_members(self, security_group_id):
return True
def refresh_instance_security_rules(self, instance):
return True
def refresh_provider_fw_rules(self):
pass
def get_available_resource(self):
"""Updates compute manager resource info on ComputeNode table.
Since we don't have a real hypervisor, pretend we have lots of
disk and ram.
"""
dic = {'vcpus': 1,
'memory_mb': 4096,
'local_gb': 1028,
'vcpus_used': 0,
'memory_mb_used': 0,
'local_gb_used': 0,
'hypervisor_type': 'fake',
'hypervisor_version': '1.0',
'cpu_info': '?'}
return dic
def ensure_filtering_rules_for_instance(self, instance_ref, network_info):
"""This method is supported only by libvirt."""
raise NotImplementedError('This method is supported only by libvirt.')
def get_instance_disk_info(self, instance_name):
return
def live_migration(self, context, instance_ref, dest,
post_method, recover_method, block_migration=False,
migrate_data=None):
return
def finish_migration(self, context, migration, instance, disk_info,
network_info, image_meta, resize_instance):
return
def confirm_migration(self, migration, instance, network_info):
return
def pre_live_migration(self, context, instance_ref, block_device_info,
network_info):
return
def unfilter_instance(self, instance_ref, network_info):
"""This method is supported only by libvirt."""
raise NotImplementedError('This method is supported only by libvirt.')
def test_remove_vm(self, instance_name):
""" Removes the named VM, as if it crashed. For testing"""
self.instances.pop(instance_name)
def update_host_status(self):
"""Return fake Host Status of ram, disk, network."""
return self.host_status
def get_host_stats(self, refresh=False):
"""Return fake Host Status of ram, disk, network."""
return self.host_status
def host_power_action(self, host, action):
"""Reboots, shuts down or powers up the host."""
pass
def host_maintenance_mode(self, host, mode):
"""Start/Stop host maintenance window. On start, it triggers
guest VMs evacuation."""
pass
def set_host_enabled(self, host, enabled):
"""Sets the specified host's ability to accept new instances."""
pass
def get_disk_available_least(self):
""" """
pass
def get_volume_connector(self, instance):
return {'ip': '127.0.0.1', 'initiator': 'fake', 'host': 'fakehost'}
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