b2e0598d3f
blueprint vmware-compute-driver Rename VMWare to VMware Rename network_utils to network_util to conform to the util class naming convention Remove the infinite loop in vim.__getattr__ Change-Id: I5bdad331a86c7aa4ca36e7a8345b53e455678c0f
391 lines
15 KiB
Python
391 lines
15 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright (c) 2011 Citrix Systems, Inc.
|
|
# Copyright 2011 OpenStack LLC.
|
|
#
|
|
# 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 connection to the VMware ESX platform.
|
|
|
|
**Related Flags**
|
|
|
|
:vmwareapi_host_ip: IPAddress of VMware ESX server.
|
|
:vmwareapi_host_username: Username for connection to VMware ESX Server.
|
|
:vmwareapi_host_password: Password for connection to VMware ESX Server.
|
|
:vmwareapi_task_poll_interval: The interval (seconds) used for polling of
|
|
remote tasks
|
|
(default: 1.0).
|
|
:vmwareapi_api_retry_count: The API retry count in case of failure such as
|
|
network failures (socket errors etc.)
|
|
(default: 10).
|
|
|
|
"""
|
|
|
|
import time
|
|
|
|
from eventlet import event
|
|
|
|
from nova import exception
|
|
from nova.openstack.common import cfg
|
|
from nova.openstack.common import log as logging
|
|
from nova import utils
|
|
from nova.virt import driver
|
|
from nova.virt.vmwareapi import error_util
|
|
from nova.virt.vmwareapi import vim
|
|
from nova.virt.vmwareapi import vim_util
|
|
from nova.virt.vmwareapi import vmops
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
vmwareapi_opts = [
|
|
cfg.StrOpt('vmwareapi_host_ip',
|
|
default=None,
|
|
help='URL for connection to VMware ESX host.Required if '
|
|
'compute_driver is vmwareapi.VMwareESXDriver.'),
|
|
cfg.StrOpt('vmwareapi_host_username',
|
|
default=None,
|
|
help='Username for connection to VMware ESX host. '
|
|
'Used only if compute_driver is '
|
|
'vmwareapi.VMwareESXDriver.'),
|
|
cfg.StrOpt('vmwareapi_host_password',
|
|
default=None,
|
|
help='Password for connection to VMware ESX host. '
|
|
'Used only if compute_driver is '
|
|
'vmwareapi.VMwareESXDriver.'),
|
|
cfg.FloatOpt('vmwareapi_task_poll_interval',
|
|
default=5.0,
|
|
help='The interval used for polling of remote tasks. '
|
|
'Used only if compute_driver is '
|
|
'vmwareapi.VMwareESXDriver.'),
|
|
cfg.IntOpt('vmwareapi_api_retry_count',
|
|
default=10,
|
|
help='The number of times we retry on failures, e.g., '
|
|
'socket error, etc. '
|
|
'Used only if compute_driver is '
|
|
'vmwareapi.VMwareESXDriver.'),
|
|
]
|
|
|
|
CONF = cfg.CONF
|
|
CONF.register_opts(vmwareapi_opts)
|
|
|
|
TIME_BETWEEN_API_CALL_RETRIES = 2.0
|
|
|
|
|
|
class Failure(Exception):
|
|
"""Base Exception class for handling task failures."""
|
|
|
|
def __init__(self, details):
|
|
self.details = details
|
|
|
|
def __str__(self):
|
|
return str(self.details)
|
|
|
|
|
|
class VMwareESXDriver(driver.ComputeDriver):
|
|
"""The ESX host connection object."""
|
|
|
|
def __init__(self, virtapi, read_only=False, scheme="https"):
|
|
super(VMwareESXDriver, self).__init__(virtapi)
|
|
|
|
host_ip = CONF.vmwareapi_host_ip
|
|
host_username = CONF.vmwareapi_host_username
|
|
host_password = CONF.vmwareapi_host_password
|
|
api_retry_count = CONF.vmwareapi_api_retry_count
|
|
if not host_ip or host_username is None or host_password is None:
|
|
raise Exception(_("Must specify vmwareapi_host_ip,"
|
|
"vmwareapi_host_username "
|
|
"and vmwareapi_host_password to use"
|
|
"compute_driver=vmwareapi.VMwareESXDriver"))
|
|
|
|
session = VMwareAPISession(host_ip, host_username, host_password,
|
|
api_retry_count, scheme=scheme)
|
|
self._vmops = vmops.VMwareVMOps(session)
|
|
|
|
def init_host(self, host):
|
|
"""Do the initialization that needs to be done."""
|
|
# FIXME(sateesh): implement this
|
|
pass
|
|
|
|
def legacy_nwinfo(self):
|
|
return True
|
|
|
|
def list_instances(self):
|
|
"""List VM instances."""
|
|
return self._vmops.list_instances()
|
|
|
|
def spawn(self, context, instance, image_meta, injected_files,
|
|
admin_password, network_info=None, block_device_info=None):
|
|
"""Create VM instance."""
|
|
self._vmops.spawn(context, instance, image_meta, network_info)
|
|
|
|
def snapshot(self, context, instance, name, update_task_state):
|
|
"""Create snapshot from a running VM instance."""
|
|
self._vmops.snapshot(context, instance, name, update_task_state)
|
|
|
|
def reboot(self, instance, network_info, reboot_type,
|
|
block_device_info=None):
|
|
"""Reboot VM instance."""
|
|
self._vmops.reboot(instance, network_info)
|
|
|
|
def destroy(self, instance, network_info, block_device_info=None,
|
|
destroy_disks=True):
|
|
"""Destroy VM instance."""
|
|
self._vmops.destroy(instance, network_info, destroy_disks)
|
|
|
|
def pause(self, instance):
|
|
"""Pause VM instance."""
|
|
self._vmops.pause(instance)
|
|
|
|
def unpause(self, instance):
|
|
"""Unpause paused VM instance."""
|
|
self._vmops.unpause(instance)
|
|
|
|
def suspend(self, instance):
|
|
"""Suspend the specified instance."""
|
|
self._vmops.suspend(instance)
|
|
|
|
def resume(self, instance, network_info, block_device_info=None):
|
|
"""Resume the suspended VM instance."""
|
|
self._vmops.resume(instance)
|
|
|
|
def get_info(self, instance):
|
|
"""Return info about the VM instance."""
|
|
return self._vmops.get_info(instance)
|
|
|
|
def get_diagnostics(self, instance):
|
|
"""Return data about VM diagnostics."""
|
|
return self._vmops.get_info(instance)
|
|
|
|
def get_console_output(self, instance):
|
|
"""Return snapshot of console."""
|
|
return self._vmops.get_console_output(instance)
|
|
|
|
def get_volume_connector(self, _instance):
|
|
"""Return volume connector information."""
|
|
# TODO(vish): When volume attaching is supported, return the
|
|
# proper initiator iqn and host.
|
|
return {
|
|
'ip': CONF.vmwareapi_host_ip,
|
|
'initiator': None,
|
|
'host': None
|
|
}
|
|
|
|
def attach_volume(self, connection_info, instance, mountpoint):
|
|
"""Attach volume storage to VM instance."""
|
|
pass
|
|
|
|
def detach_volume(self, connection_info, instance, mountpoint):
|
|
"""Detach volume storage to VM instance."""
|
|
pass
|
|
|
|
def get_console_pool_info(self, console_type):
|
|
"""Get info about the host on which the VM resides."""
|
|
return {'address': CONF.vmwareapi_host_ip,
|
|
'username': CONF.vmwareapi_host_username,
|
|
'password': CONF.vmwareapi_host_password}
|
|
|
|
def get_available_resource(self, nodename):
|
|
"""This method is supported only by libvirt."""
|
|
return
|
|
|
|
def plug_vifs(self, instance, network_info):
|
|
"""Plug VIFs into networks."""
|
|
self._vmops.plug_vifs(instance, network_info)
|
|
|
|
def unplug_vifs(self, instance, network_info):
|
|
"""Unplug VIFs from networks."""
|
|
self._vmops.unplug_vifs(instance, network_info)
|
|
|
|
|
|
class VMwareAPISession(object):
|
|
"""
|
|
Sets up a session with the ESX host and handles all
|
|
the calls made to the host.
|
|
"""
|
|
|
|
def __init__(self, host_ip, host_username, host_password,
|
|
api_retry_count, scheme="https"):
|
|
self._host_ip = host_ip
|
|
self._host_username = host_username
|
|
self._host_password = host_password
|
|
self.api_retry_count = api_retry_count
|
|
self._scheme = scheme
|
|
self._session_id = None
|
|
self.vim = None
|
|
self._create_session()
|
|
|
|
def _get_vim_object(self):
|
|
"""Create the VIM Object instance."""
|
|
return vim.Vim(protocol=self._scheme, host=self._host_ip)
|
|
|
|
def _create_session(self):
|
|
"""Creates a session with the ESX host."""
|
|
while True:
|
|
try:
|
|
# Login and setup the session with the ESX host for making
|
|
# API calls
|
|
self.vim = self._get_vim_object()
|
|
session = self.vim.Login(
|
|
self.vim.get_service_content().sessionManager,
|
|
userName=self._host_username,
|
|
password=self._host_password)
|
|
# Terminate the earlier session, if possible ( For the sake of
|
|
# preserving sessions as there is a limit to the number of
|
|
# sessions we can have )
|
|
if self._session_id:
|
|
try:
|
|
self.vim.TerminateSession(
|
|
self.vim.get_service_content().sessionManager,
|
|
sessionId=[self._session_id])
|
|
except Exception, excep:
|
|
# This exception is something we can live with. It is
|
|
# just an extra caution on our side. The session may
|
|
# have been cleared. We could have made a call to
|
|
# SessionIsActive, but that is an overhead because we
|
|
# anyway would have to call TerminateSession.
|
|
LOG.debug(excep)
|
|
self._session_id = session.key
|
|
return
|
|
except Exception, excep:
|
|
LOG.critical(_("In vmwareapi:_create_session, "
|
|
"got this exception: %s") % excep)
|
|
raise exception.NovaException(excep)
|
|
|
|
def __del__(self):
|
|
"""Logs-out the session."""
|
|
# Logout to avoid un-necessary increase in session count at the
|
|
# ESX host
|
|
try:
|
|
self.vim.Logout(self.vim.get_service_content().sessionManager)
|
|
except Exception, excep:
|
|
# It is just cautionary on our part to do a logout in del just
|
|
# to ensure that the session is not left active.
|
|
LOG.debug(excep)
|
|
|
|
def _is_vim_object(self, module):
|
|
"""Check if the module is a VIM Object instance."""
|
|
return isinstance(module, vim.Vim)
|
|
|
|
def _call_method(self, module, method, *args, **kwargs):
|
|
"""
|
|
Calls a method within the module specified with
|
|
args provided.
|
|
"""
|
|
args = list(args)
|
|
retry_count = 0
|
|
exc = None
|
|
last_fault_list = []
|
|
while True:
|
|
try:
|
|
if not self._is_vim_object(module):
|
|
# If it is not the first try, then get the latest
|
|
# vim object
|
|
if retry_count > 0:
|
|
args = args[1:]
|
|
args = [self.vim] + args
|
|
retry_count += 1
|
|
temp_module = module
|
|
|
|
for method_elem in method.split("."):
|
|
temp_module = getattr(temp_module, method_elem)
|
|
|
|
return temp_module(*args, **kwargs)
|
|
except error_util.VimFaultException, excep:
|
|
# If it is a Session Fault Exception, it may point
|
|
# to a session gone bad. So we try re-creating a session
|
|
# and then proceeding ahead with the call.
|
|
exc = excep
|
|
if error_util.FAULT_NOT_AUTHENTICATED in excep.fault_list:
|
|
# Because of the idle session returning an empty
|
|
# RetrievePropertiesResponse and also the same is returned
|
|
# when there is say empty answer to the query for
|
|
# VMs on the host ( as in no VMs on the host), we have no
|
|
# way to differentiate.
|
|
# So if the previous response was also am empty response
|
|
# and after creating a new session, we get the same empty
|
|
# response, then we are sure of the response being supposed
|
|
# to be empty.
|
|
if error_util.FAULT_NOT_AUTHENTICATED in last_fault_list:
|
|
return []
|
|
last_fault_list = excep.fault_list
|
|
self._create_session()
|
|
else:
|
|
# No re-trying for errors for API call has gone through
|
|
# and is the caller's fault. Caller should handle these
|
|
# errors. e.g, InvalidArgument fault.
|
|
break
|
|
except error_util.SessionOverLoadException, excep:
|
|
# For exceptions which may come because of session overload,
|
|
# we retry
|
|
exc = excep
|
|
except Exception, excep:
|
|
# If it is a proper exception, say not having furnished
|
|
# proper data in the SOAP call or the retry limit having
|
|
# exceeded, we raise the exception
|
|
exc = excep
|
|
break
|
|
# If retry count has been reached then break and
|
|
# raise the exception
|
|
if retry_count > self.api_retry_count:
|
|
break
|
|
time.sleep(TIME_BETWEEN_API_CALL_RETRIES)
|
|
|
|
LOG.critical(_("In vmwareapi:_call_method, "
|
|
"got this exception: %s") % exc)
|
|
raise
|
|
|
|
def _get_vim(self):
|
|
"""Gets the VIM object reference."""
|
|
if self.vim is None:
|
|
self._create_session()
|
|
return self.vim
|
|
|
|
def _wait_for_task(self, instance_uuid, task_ref):
|
|
"""
|
|
Return a Deferred that will give the result of the given task.
|
|
The task is polled until it completes.
|
|
"""
|
|
done = event.Event()
|
|
loop = utils.FixedIntervalLoopingCall(self._poll_task, instance_uuid,
|
|
task_ref, done)
|
|
loop.start(CONF.vmwareapi_task_poll_interval)
|
|
ret_val = done.wait()
|
|
loop.stop()
|
|
return ret_val
|
|
|
|
def _poll_task(self, instance_uuid, task_ref, done):
|
|
"""
|
|
Poll the given task, and fires the given Deferred if we
|
|
get a result.
|
|
"""
|
|
try:
|
|
task_info = self._call_method(vim_util, "get_dynamic_property",
|
|
task_ref, "Task", "info")
|
|
task_name = task_info.name
|
|
if task_info.state in ['queued', 'running']:
|
|
return
|
|
elif task_info.state == 'success':
|
|
LOG.debug(_("Task [%(task_name)s] %(task_ref)s "
|
|
"status: success") % locals())
|
|
done.send("success")
|
|
else:
|
|
error_info = str(task_info.error.localizedMessage)
|
|
LOG.warn(_("Task [%(task_name)s] %(task_ref)s "
|
|
"status: error %(error_info)s") % locals())
|
|
done.send_exception(exception.NovaException(error_info))
|
|
except Exception, excep:
|
|
LOG.warn(_("In vmwareapi:_poll_task, Got this error %s") % excep)
|
|
done.send_exception(excep)
|