317 lines
9.7 KiB
Python
317 lines
9.7 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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# Copyright (c) 2010 Citrix Systems, Inc.
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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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A fake (in-memory) hypervisor+api.
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Allows nova testing w/o a hypervisor. This module also documents the
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semantics of real hypervisor connections.
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"""
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from nova import db
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from nova import exception
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from nova import log as logging
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from nova import utils
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from nova.compute import power_state
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from nova.virt import driver
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LOG = logging.getLogger('nova.compute.disk')
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def get_connection(_=None):
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# The read_only parameter is ignored.
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return FakeConnection.instance()
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class FakeInstance(object):
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def __init__(self, name, state):
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self.name = name
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self.state = state
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class FakeConnection(driver.ComputeDriver):
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"""Fake hypervisor driver"""
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def __init__(self):
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self.instances = {}
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self.host_status = {
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'host_name-description': 'Fake Host',
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'host_hostname': 'fake-mini',
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'host_memory_total': 8000000000,
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'host_memory_overhead': 10000000,
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'host_memory_free': 7900000000,
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'host_memory_free_computed': 7900000000,
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'host_other_config': {},
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'host_ip_address': '192.168.1.109',
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'host_cpu_info': {},
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'disk_available': 500000000000,
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'disk_total': 600000000000,
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'disk_used': 100000000000,
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'host_uuid': 'cedb9b39-9388-41df-8891-c5c9a0c0fe5f',
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'host_name_label': 'fake-mini'}
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self._mounts = {}
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@classmethod
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def instance(cls):
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if not hasattr(cls, '_instance'):
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cls._instance = cls()
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return cls._instance
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def init_host(self, host):
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return
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def list_instances(self):
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return self.instances.keys()
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def _map_to_instance_info(self, instance):
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instance = utils.check_isinstance(instance, FakeInstance)
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info = driver.InstanceInfo(instance.name, instance.state)
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return info
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def list_instances_detail(self):
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info_list = []
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for instance in self.instances.values():
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info_list.append(self._map_to_instance_info(instance))
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return info_list
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def plug_vifs(self, instance, network_info):
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"""Plugin VIFs into networks."""
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pass
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def spawn(self, context, instance,
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network_info=None, block_device_info=None):
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name = instance.name
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state = power_state.RUNNING
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fake_instance = FakeInstance(name, state)
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self.instances[name] = fake_instance
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def snapshot(self, context, instance, name):
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if not instance['name'] in self.instances:
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raise exception.InstanceNotRunning()
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def reboot(self, instance, network_info, reboot_type):
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pass
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def get_host_ip_addr(self):
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return '192.168.0.1'
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def resize(self, instance, flavor):
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pass
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def set_admin_password(self, instance, new_pass):
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pass
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def inject_file(self, instance, b64_path, b64_contents):
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pass
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def agent_update(self, instance, url, md5hash):
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pass
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def rescue(self, context, instance, network_info):
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pass
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def unrescue(self, instance, network_info):
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pass
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def poll_rebooting_instances(self, timeout):
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pass
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def poll_rescued_instances(self, timeout):
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pass
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def migrate_disk_and_power_off(self, context, instance, dest):
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pass
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def poll_unconfirmed_resizes(self, resize_confirm_window):
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pass
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def pause(self, instance):
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pass
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def unpause(self, instance):
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pass
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def suspend(self, instance):
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pass
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def resume(self, instance):
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pass
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def destroy(self, instance, network_info, block_device_info=None,
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cleanup=True):
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key = instance['name']
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if key in self.instances:
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del self.instances[key]
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else:
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LOG.warning("Key '%s' not in instances '%s'" %
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(key, self.instances))
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def attach_volume(self, connection_info, instance_name, mountpoint):
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"""Attach the disk to the instance at mountpoint using info"""
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if not instance_name in self._mounts:
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self._mounts[instance_name] = {}
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self._mounts[instance_name][mountpoint] = connection_info
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return True
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def detach_volume(self, connection_info, instance_name, mountpoint):
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"""Detach the disk attached to the instance"""
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try:
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del self._mounts[instance_name][mountpoint]
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except KeyError:
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pass
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return True
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def get_info(self, instance_name):
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if instance_name not in self.instances:
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raise exception.InstanceNotFound(instance_id=instance_name)
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i = self.instances[instance_name]
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return {'state': i.state,
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'max_mem': 0,
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'mem': 0,
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'num_cpu': 2,
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'cpu_time': 0}
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def get_diagnostics(self, instance_name):
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return {}
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def get_all_bw_usage(self, start_time, stop_time=None):
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"""Return bandwidth usage info for each interface on each
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running VM"""
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bwusage = []
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return bwusage
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def list_disks(self, instance_name):
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return ['A_DISK']
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def list_interfaces(self, instance_name):
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return ['A_VIF']
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def block_stats(self, instance_name, disk_id):
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return [0L, 0L, 0L, 0L, None]
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def interface_stats(self, instance_name, iface_id):
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return [0L, 0L, 0L, 0L, 0L, 0L, 0L, 0L]
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def get_console_output(self, instance):
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return 'FAKE CONSOLE\xffOUTPUT'
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def get_ajax_console(self, instance):
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return {'token': 'FAKETOKEN',
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'host': 'fakeajaxconsole.com',
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'port': 6969}
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def get_vnc_console(self, instance):
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return {'token': 'FAKETOKEN',
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'host': 'fakevncconsole.com',
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'port': 6969}
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def get_console_pool_info(self, console_type):
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return {'address': '127.0.0.1',
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'username': 'fakeuser',
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'password': 'fakepassword'}
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def refresh_security_group_rules(self, security_group_id):
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return True
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def refresh_security_group_members(self, security_group_id):
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return True
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def refresh_provider_fw_rules(self):
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pass
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def update_available_resource(self, ctxt, host):
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"""Updates compute manager resource info on ComputeNode table.
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Since we don't have a real hypervisor, pretend we have lots of
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disk and ram.
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"""
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try:
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service_ref = db.service_get_all_compute_by_host(ctxt, host)[0]
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except exception.NotFound:
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raise exception.ComputeServiceUnavailable(host=host)
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# Updating host information
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dic = {'vcpus': 1,
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'memory_mb': 4096,
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'local_gb': 1028,
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'vcpus_used': 0,
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'memory_mb_used': 0,
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'local_gb_used': 0,
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'hypervisor_type': 'fake',
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'hypervisor_version': '1.0',
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'cpu_info': '?'}
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compute_node_ref = service_ref['compute_node']
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if not compute_node_ref:
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LOG.info(_('Compute_service record created for %s ') % host)
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dic['service_id'] = service_ref['id']
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db.compute_node_create(ctxt, dic)
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else:
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LOG.info(_('Compute_service record updated for %s ') % host)
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db.compute_node_update(ctxt, compute_node_ref[0]['id'], dic)
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def compare_cpu(self, xml):
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"""This method is supported only by libvirt."""
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raise NotImplementedError('This method is supported only by libvirt.')
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def ensure_filtering_rules_for_instance(self, instance_ref, network_info):
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"""This method is supported only by libvirt."""
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raise NotImplementedError('This method is supported only by libvirt.')
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def get_instance_disk_info(self, ctxt, instance_ref):
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"""This method is supported only by libvirt."""
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return
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def live_migration(self, context, instance_ref, dest,
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post_method, recover_method, block_migration=False):
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"""This method is supported only by libvirt."""
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return
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def pre_live_migration(self, block_device_info):
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"""This method is supported only by libvirt."""
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return
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def unfilter_instance(self, instance_ref, network_info):
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"""This method is supported only by libvirt."""
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raise NotImplementedError('This method is supported only by libvirt.')
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def test_remove_vm(self, instance_name):
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""" Removes the named VM, as if it crashed. For testing"""
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self.instances.pop(instance_name)
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def update_host_status(self):
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"""Return fake Host Status of ram, disk, network."""
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return self.host_status
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def get_host_stats(self, refresh=False):
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"""Return fake Host Status of ram, disk, network."""
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return self.host_status
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def host_power_action(self, host, action):
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"""Reboots, shuts down or powers up the host."""
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pass
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def set_host_enabled(self, host, enabled):
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"""Sets the specified host's ability to accept new instances."""
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pass
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