286 lines
9.1 KiB
Python
286 lines
9.1 KiB
Python
#
|
|
# Copyright (C) 2013 Red Hat, Inc.
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
# MA 02110-1301 USA.
|
|
#
|
|
|
|
import logging
|
|
|
|
|
|
# Debugging helper to force old style polling
|
|
# Can be enabled with virt-manager --test-old-poll
|
|
FORCE_OLD_POLL = False
|
|
|
|
|
|
def _new_poll_helper(origmap, typename, listfunc, buildfunc):
|
|
"""
|
|
Helper for new style listAll* APIs
|
|
"""
|
|
current = {}
|
|
new = {}
|
|
objs = []
|
|
|
|
try:
|
|
objs = listfunc()
|
|
except Exception, e:
|
|
logging.debug("Unable to list all %ss: %s", typename, e)
|
|
|
|
for obj in objs:
|
|
connkey = obj.name()
|
|
|
|
if connkey not in origmap:
|
|
# Object is brand new this period
|
|
current[connkey] = buildfunc(obj, connkey)
|
|
new[connkey] = current[connkey]
|
|
else:
|
|
# Previously known object
|
|
current[connkey] = origmap[connkey]
|
|
del(origmap[connkey])
|
|
|
|
return (origmap.values(), new.values(), current.values())
|
|
|
|
|
|
def _old_poll_helper(origmap, typename,
|
|
active_list, inactive_list,
|
|
lookup_func, build_func):
|
|
"""
|
|
Helper routine for old style split API libvirt polling.
|
|
@origmap: Pre-existing mapping of objects, with connkey->obj mapping.
|
|
objects must have an is_active and set_active API
|
|
@typename: string describing type of objects we are polling for use
|
|
in debug messages.
|
|
@active_list: Function that returns the list of active objects
|
|
@inactive_list: Function that returns the list of inactive objects
|
|
@lookup_func: Function to get an object handle for the passed name
|
|
@build_func: Function that builds a new object class. It is passed
|
|
args of (raw libvirt object, connkey)
|
|
"""
|
|
current = {}
|
|
new = {}
|
|
newActiveNames = []
|
|
newInactiveNames = []
|
|
|
|
try:
|
|
newActiveNames = active_list()
|
|
except Exception, e:
|
|
logging.debug("Unable to list active %ss: %s", typename, e)
|
|
try:
|
|
newInactiveNames = inactive_list()
|
|
except Exception, e:
|
|
logging.debug("Unable to list inactive %ss: %s", typename, e)
|
|
|
|
def check_obj(name):
|
|
obj = None
|
|
connkey = name
|
|
|
|
if connkey not in origmap:
|
|
try:
|
|
obj = lookup_func(name)
|
|
except Exception, e:
|
|
logging.debug("Could not fetch %s '%s': %s",
|
|
typename, connkey, e)
|
|
return
|
|
|
|
# Object is brand new this period
|
|
current[connkey] = build_func(obj, connkey)
|
|
new[connkey] = current[connkey]
|
|
else:
|
|
# Previously known object
|
|
current[connkey] = origmap[connkey]
|
|
del(origmap[connkey])
|
|
|
|
for name in newActiveNames + newInactiveNames:
|
|
try:
|
|
check_obj(name)
|
|
except:
|
|
logging.exception("Couldn't fetch %s '%s'", typename, name)
|
|
|
|
return (origmap.values(), new.values(), current.values())
|
|
|
|
|
|
def fetch_nets(backend, origmap, build_func):
|
|
name = "network"
|
|
|
|
if backend.check_support(
|
|
backend.SUPPORT_CONN_LISTALLNETWORKS) and not FORCE_OLD_POLL:
|
|
return _new_poll_helper(origmap, name,
|
|
backend.listAllNetworks, build_func)
|
|
else:
|
|
active_list = backend.listNetworks
|
|
inactive_list = backend.listDefinedNetworks
|
|
lookup_func = backend.networkLookupByName
|
|
|
|
return _old_poll_helper(origmap, name,
|
|
active_list, inactive_list,
|
|
lookup_func, build_func)
|
|
|
|
|
|
def fetch_pools(backend, origmap, build_func):
|
|
name = "pool"
|
|
|
|
if backend.check_support(
|
|
backend.SUPPORT_CONN_LISTALLSTORAGEPOOLS) and not FORCE_OLD_POLL:
|
|
return _new_poll_helper(origmap, name,
|
|
backend.listAllStoragePools, build_func)
|
|
else:
|
|
active_list = backend.listStoragePools
|
|
inactive_list = backend.listDefinedStoragePools
|
|
lookup_func = backend.storagePoolLookupByName
|
|
|
|
return _old_poll_helper(origmap, name,
|
|
active_list, inactive_list,
|
|
lookup_func, build_func)
|
|
|
|
|
|
def fetch_volumes(backend, pool, origmap, build_func):
|
|
name = "volume"
|
|
|
|
if backend.check_support(
|
|
backend.SUPPORT_POOL_LISTALLVOLUMES, pool) and not FORCE_OLD_POLL:
|
|
return _new_poll_helper(origmap, name,
|
|
pool.listAllVolumes, build_func)
|
|
else:
|
|
active_list = pool.listVolumes
|
|
def inactive_list():
|
|
return []
|
|
lookup_func = pool.storageVolLookupByName
|
|
return _old_poll_helper(origmap, name,
|
|
active_list, inactive_list,
|
|
lookup_func, build_func)
|
|
|
|
|
|
def fetch_interfaces(backend, origmap, build_func):
|
|
name = "interface"
|
|
|
|
if backend.check_support(
|
|
backend.SUPPORT_CONN_LISTALLINTERFACES) and not FORCE_OLD_POLL:
|
|
return _new_poll_helper(origmap, name,
|
|
backend.listAllInterfaces, build_func)
|
|
else:
|
|
active_list = backend.listInterfaces
|
|
inactive_list = backend.listDefinedInterfaces
|
|
lookup_func = backend.interfaceLookupByName
|
|
|
|
return _old_poll_helper(origmap, name,
|
|
active_list, inactive_list,
|
|
lookup_func, build_func)
|
|
|
|
|
|
def fetch_nodedevs(backend, origmap, build_func):
|
|
name = "nodedev"
|
|
if backend.check_support(
|
|
backend.SUPPORT_CONN_LISTALLDEVICES) and not FORCE_OLD_POLL:
|
|
return _new_poll_helper(origmap, name,
|
|
backend.listAllDevices, build_func)
|
|
else:
|
|
def active_list():
|
|
return backend.listDevices(None, 0)
|
|
def inactive_list():
|
|
return []
|
|
lookup_func = backend.nodeDeviceLookupByName
|
|
return _old_poll_helper(origmap, name,
|
|
active_list, inactive_list,
|
|
lookup_func, build_func)
|
|
|
|
|
|
def _old_fetch_vms(backend, origmap, build_func):
|
|
# We can't easily use _old_poll_helper here because the domain API
|
|
# doesn't always return names like other objects, it returns
|
|
# IDs for active VMs
|
|
|
|
newActiveIDs = []
|
|
newInactiveNames = []
|
|
oldActiveIDs = {}
|
|
oldInactiveNames = {}
|
|
current = {}
|
|
new = {}
|
|
|
|
# Build list of previous vms with proper id/name mappings
|
|
for vm in origmap.values():
|
|
if vm.is_active():
|
|
oldActiveIDs[vm.get_id()] = vm
|
|
else:
|
|
oldInactiveNames[vm.get_name()] = vm
|
|
|
|
try:
|
|
newActiveIDs = backend.listDomainsID()
|
|
except Exception, e:
|
|
logging.debug("Unable to list active domains: %s", e)
|
|
|
|
try:
|
|
newInactiveNames = backend.listDefinedDomains()
|
|
except Exception, e:
|
|
logging.exception("Unable to list inactive domains: %s", e)
|
|
|
|
def add_vm(vm):
|
|
connkey = vm.get_name()
|
|
|
|
current[connkey] = vm
|
|
del(origmap[connkey])
|
|
|
|
def check_new(rawvm, connkey):
|
|
if connkey in origmap:
|
|
vm = origmap[connkey]
|
|
del(origmap[connkey])
|
|
else:
|
|
vm = build_func(rawvm, connkey)
|
|
new[connkey] = vm
|
|
|
|
current[connkey] = vm
|
|
|
|
for _id in newActiveIDs:
|
|
if _id in oldActiveIDs:
|
|
# No change, copy across existing VM object
|
|
vm = oldActiveIDs[_id]
|
|
add_vm(vm)
|
|
else:
|
|
# Check if domain is brand new, or old one that changed state
|
|
try:
|
|
vm = backend.lookupByID(_id)
|
|
connkey = vm.name()
|
|
|
|
check_new(vm, connkey)
|
|
except:
|
|
logging.exception("Couldn't fetch domain id '%s'", _id)
|
|
|
|
|
|
for name in newInactiveNames:
|
|
if name in oldInactiveNames:
|
|
# No change, copy across existing VM object
|
|
vm = oldInactiveNames[name]
|
|
add_vm(vm)
|
|
else:
|
|
# Check if domain is brand new, or old one that changed state
|
|
try:
|
|
vm = backend.lookupByName(name)
|
|
connkey = name
|
|
|
|
check_new(vm, connkey)
|
|
except:
|
|
logging.exception("Couldn't fetch domain '%s'", name)
|
|
|
|
return (origmap.values(), new.values(), current.values())
|
|
|
|
|
|
def fetch_vms(backend, origmap, build_func):
|
|
name = "domain"
|
|
if backend.check_support(
|
|
backend.SUPPORT_CONN_LISTALLDOMAINS):
|
|
return _new_poll_helper(origmap, name,
|
|
backend.listAllDomains, build_func)
|
|
else:
|
|
return _old_fetch_vms(backend, origmap, build_func)
|