def run(self, params, args):
nodes = self.newdb.getNodesfromNames(args,
preload = ['vm_defs'])
(terminate, action) = self.fillParams( [
('terminate', 'n'),
('action', 'poweroff'),
])
terminate = self.str2bool(terminate)
if len(nodes) < 1:
self.abort('must supply host')
plugins = self.loadPlugins()
for node in nodes:
if not terminate:
#
# the name of the physical host that will boot
# this VM host
#
if not node.vm_defs:
self.abort("host %s is not a virtual host" % node.name)
if not node.vm_defs.physNode:
self.abort("host %s does not have a physical host" % node.name)
# get the physical node that houses this VM
physhost = node.vm_defs.physNode.name
import rocks.vmconstant
hipervisor = libvirt.open(rocks.vmconstant.connectionURL
% physhost)
libvirt.registerErrorHandler(handler, 'context')
try:
domU = hipervisor.lookupByName(node.name)
if(action == 'poweroff'):
domU.destroy()
domU.undefine()
elif(action == 'shutdown'):
domU.shutdown()
domU.undefine()
elif(action == 'reset'):
domU.reset(0)
elif(action == 'reboot'):
domU.reboot(0)
except libvirt.libvirtError, m:
pass
if terminate:
#
# run the terminate plugins to deallocate the host resources
#
for plugin in plugins:
syslog.syslog(syslog.LOG_INFO, 'run %s' % plugin)
plugin.run(node)
def run(self, params, args):
nodes = self.newdb.getNodesfromNames(args, preload=['vm_defs'])
(terminate, action) = self.fillParams([
('terminate', 'n'),
('action', 'poweroff'),
])
terminate = self.str2bool(terminate)
if len(nodes) < 1:
self.abort('must supply host')
plugins = self.loadPlugins()
for node in nodes:
if not terminate:
#
# the name of the physical host that will boot
# this VM host
#
if not node.vm_defs:
self.abort("host %s is not a virtual host" % node.name)
if not node.vm_defs.physNode:
self.abort("host %s does not have a physical host" %
node.name)
# get the physical node that houses this VM
physhost = node.vm_defs.physNode.name
import rocks.vmconstant
hipervisor = libvirt.open(rocks.vmconstant.connectionURL %
physhost)
libvirt.registerErrorHandler(handler, 'context')
try:
domU = hipervisor.lookupByName(node.name)
if (action == 'poweroff'):
domU.destroy()
domU.undefine()
elif (action == 'shutdown'):
domU.shutdown()
domU.undefine()
elif (action == 'reset'):
domU.reset(0)
elif (action == 'reboot'):
domU.reboot(0)
except libvirt.libvirtError, m:
pass
if terminate:
#
# run the terminate plugins to deallocate the host resources
#
for plugin in plugins:
syslog.syslog(syslog.LOG_INFO, 'run %s' % plugin)
plugin.run(node)
def __init__(self,
username,
password,
port,
address,
domain_name,
libvirt_uri,
libvirt_sasl_username=None,
libvirt_sasl_password=None):
super(VirtualBMC, self).__init__({username: password},
port=port,
address=address)
self.domain_name = domain_name
self._conn_args = {
'uri': libvirt_uri,
'sasl_username': libvirt_sasl_username,
'sasl_password': libvirt_sasl_password
}
self._domain = None
self._state = None
self._stream = None
self._run_console = False
self._sol_thread = None
libvirt.virEventRegisterDefaultImpl()
libvirt.registerErrorHandler(error_handler, None)
def main(args):
parser = argparse.ArgumentParser()
parser.add_argument('--libvirt-url', dest='libvirturl',
default="qemu:///system",
help='Set libvirt connection url - default is "qemu:///system"')
parser.add_argument('cluster_description_file', type=argparse.FileType('r'),
help='File with cluster description')
args = parser.parse_args()
libvirt.registerErrorHandler(suppress_some_messages, None)
with action("Connecting to libvirt at {}".format(args.libvirturl)):
conn = libvirt.open(args.libvirturl)
with action("Load cluster description from {}".format(args.cluster_description_file.name)):
cluster = load_cluster_description(args.cluster_description_file.read())
images_path = cluster.attrs['images_path']
print "Will store images to", images_path
cluster.fuel_vm.boot_network = False
launch_vm(conn, cluster.fuel_vm, cluster.nets, images_path)
wait_fuel_installed(cluster.fuel_vm)
for vm_name, vm in cluster.vms.items():
launch_vm(conn, vm, cluster.nets, images_path)
return 0
def main():
parser = argparse.ArgumentParser(
prog='virshbmc',
description='Pretend to be a BMC and proxy to virsh',
formatter_class=argparse.ArgumentDefaultsHelpFormatter
)
parser.add_argument('--port',
dest='port',
type=int,
default=623,
help='(UDP) port to listen on')
parser.add_argument('--connect',
dest='hypervisor',
default='qemu:///system',
help='The hypervisor to connect to')
parser.add_argument('--domain',
dest='domain',
required=True,
help='The name of the domain to manage')
args = parser.parse_args()
libvirt.virEventRegisterDefaultImpl()
libvirt.registerErrorHandler(error_handler, None)
mybmc = LibvirtBmc({'admin': 'password'},
hypervisor=args.hypervisor,
domain=args.domain,
port=args.port)
mybmc.listen()
def test(self):
self.mox.StubOutWithMock(libvirt, 'registerErrorHandler')
libvirt.registerErrorHandler(mox.IgnoreArg(), None)
self.mox.ReplayAll()
utils._clearLibvirtError()
def __virtual__():
'''
Apply this module as the hyper module if the minion is a kvm hypervisor
'''
if 'virtual' not in __grains__:
return False
if __grains__['virtual'] != 'physical':
return False
if __grains__['kernel'] != 'Linux':
return False
if not os.path.exists('/proc/modules'):
return False
try:
if 'kvm_' not in salt.utils.fopen('/proc/modules').read():
return False
except IOError:
return False
if not HAS_LIBVIRT:
return False
#Libvirt is very noisy. This will quiet it down
def quiet_errors(ignored, err):
log.debug(err[2])
libvirt.registerErrorHandler(quiet_errors, None)
try:
libvirt_conn = libvirt.open('qemu:///system')
libvirt_conn.close()
return 'hyper'
except libvirt.libvirtError:
return False
def main():
# Ignore text error from libvirt
libvirt.registerErrorHandler(lambda: 1, None)
parser = argparse.ArgumentParser(
description='Provide functions to create and manage VMs on KVM.',
prog='vm')
parser.add_argument('--version', action='version',
version=Configuration.VERSION)
parser.add_argument('-v', '--verbose', action='store_true')
parser.add_argument(
'--fork',
default=4,
type=int,
help='set how many tasks launch parallelly')
add_subparsers(parser)
args = parser.parse_args()
if args.verbose:
logger.setLevel(logging.DEBUG)
Resources(Configuration.RESOURCE_CONFIG)
if hasattr(args, 'func'):
getattr(args, 'func')(args)
else:
parser.print_help()
sys.exit(0)
def __init__(self, config):
self.conn = None
self.uri = config.get('main', 'libvirt-hypervisor-uri')
self.logger = logging.getLogger('mom.libvirtInterface')
libvirt.registerErrorHandler(self._error_handler, None)
self._connect()
self._setStatsFields()
def register():
ctx = 'just some information'
libvirt.registerErrorHandler(error_handler, ctx)
conn = libvirt.open('qemu://system')
conn.close()
exit(0)
def test(self):
self.mox.StubOutWithMock(libvirt, 'registerErrorHandler')
libvirt.registerErrorHandler(mox.IgnoreArg(), None)
self.mox.ReplayAll()
utils._clearLibvirtError()
def libvirt_worker_loop(loop, start_websockets_server, hypervisors):
def _err_handler(self, ctxt, err):
print("Error from libvirt : %s", err[2])
print("[{}] entering libvirt_worker_loop".format(
threading.get_ident()))
prctl.set_name('libvirt_loop')
asyncio.set_event_loop(loop)
libvirtaio.virEventRegisterAsyncIOImpl()
libvirt.registerErrorHandler(_err_handler, '_virt_event')
for id_, h in hypervisors.items():
monitor_tasks.append(
loop.create_task(h['monitor_instance'].watchdog_loop()))
loop.run_until_complete(start_websockets_server)
try:
loop.run_until_complete(asyncio.gather(*monitor_tasks))
except asyncio.CancelledError:
loop.stop()
finally:
loop.run_until_complete(loop.shutdown_asyncgens())
loop.close()
def get_libvirt_connection(name):
auth = [[libvirt.VIR_CRED_AUTHNAME, libvirt.VIR_CRED_PASSPHRASE],
auth_callback, None]
libvirt_url = config.get('libvirt_url', 'qemu:///system')
libvirt.registerErrorHandler(f=libvirt_callback, ctx=None)
return libvirt.openAuth(libvirt_url, auth)
def __init__(self, config):
self.conn = None
self.uri = config.get('main', 'libvirt-hypervisor-uri')
self.interval = config.getint('main', 'guest-monitor-interval')
self.logger = logging.getLogger('mom.libvirtInterface')
libvirt.registerErrorHandler(self._error_handler, None)
self._connect()
self._setStatsFields()
def register_libvirt_error_handler():
"""
Ignore libvirt error reporting, we just use exceptions
"""
def libvirt_callback(userdata, err):
ignore = userdata
ignore = err
libvirt.registerErrorHandler(f=libvirt_callback, ctx=None)
def register_libvirt_error_handler():
"""
Ignore libvirt error reporting, we just use exceptions
"""
def libvirt_callback(userdata, err):
ignore = userdata
ignore = err
libvirt.registerErrorHandler(f=libvirt_callback, ctx=None)
def _clearLibvirtError():
"""Disable libvirt error messages.
_clearLibvirtError is a helper function to withoutLibvirtError,
designed to make mocks and testing easy. It simply registers NOOP
error handler for libvirt.
"""
libvirt.registerErrorHandler((lambda ctx, err: 1), None)
def __init__(self, logger, config, registerEvents=True):
super(Libvirtd, self).__init__(logger, config)
self.changedCallback = None
self.registerEvents = registerEvents
self._host_uuid = None
self._host_name = None
self.eventLoopThread = None
libvirt.registerErrorHandler(lambda ctx, error: None, None)
def __init__(self, logger, config, registerEvents=True):
super(Libvirtd, self).__init__(logger, config)
self.changedCallback = None
self.registerEvents = registerEvents
self._host_uuid = None
self._host_name = None
self.eventLoopThread = None
libvirt.registerErrorHandler(lambda ctx, error: None, None)
def _clearLibvirtError():
"""Disable libvirt error messages.
_clearLibvirtError is a helper function to withoutLibvirtError,
designed to make mocks and testing easy. It simply registers NOOP
error handler for libvirt.
"""
libvirt.registerErrorHandler((lambda ctx, err: 1), None)
def main():
module = AnsibleModule(argument_spec=dict(
pool=dict(required=True),
name=dict(aliases=['vol'], required=True),
state=dict(choices=all_states, default='present'),
uri=dict(default='qemu:///system'),
capacity=dict(aliases=['size']),
allocation=dict(choices=['thin', 'fat'], default='thin'),
),
supports_check_mode=True)
result = dict(changed=False, message='')
if not installed_libvirt_py:
module.fail_json(msg="'libvirt' python library is missing on host.")
libvirt.registerErrorHandler(eh_dummy, 'ctx') # apply dummy error handler
# connect to libvirt host
conn = libvirt.open(module.params['uri']) if not module.check_mode else \
libvirt.openReadOnly(module.params['uri'])
if not conn:
module.fail_json(msg="connection to libvirt failed.")
pool_handle = None
disk_handle = None
# look for volume
try:
pool_handle = conn.storagePoolLookupByName(module.params['pool'])
disk_handle = pool_handle.storageVolLookupByName(module.params['name'])
except libvirt.libvirtError as e:
if e.get_error_code() == libvirt.VIR_ERR_NO_STORAGE_POOL:
module.fail_json(msg="no such pool",
debug=(e.get_error_code(), str(e)))
elif e.get_error_code() != libvirt.VIR_ERR_NO_STORAGE_VOL:
module.fail_json(msg=str(e), debug=e.get_error_code())
# apply state
if not disk_handle and module.params['state'] == 'present':
result['changed'] = True
# determine capacity first
if not 'capacity' in module.params:
module.fail_json(msg="you should define a capacity")
capacity = get_capacity(module.params['capacity'])
if not capacity:
module.fail_json(msg="invalid capacity format")
if not module.check_mode:
define_vol(pool_handle,
module.params['name'],
capacity,
thin=(module.params['allocation'] == 'thin'))
elif disk_handle and module.params['state'] == 'absent':
result['changed'] = True
if not module.check_mode:
undefine_vol(disk_handle)
module.exit_json(**result)
def __init__(self, vm_name):
"""Get config and setup logging."""
self.config = config.setup()
self.log = logging.getLogger(__name__)
def _error_handler(self, err):
msg = "Ignoring Libvirt error %s)" % err
pass
# Prevent libvirt errors from reaching the console
libvirt.registerErrorHandler(_error_handler, None)
def close(self):
libvirt.registerErrorHandler(None, None)
if self._xs:
self._xs.close()
self._xs = None
if self._libvirt_conn:
self._libvirt_conn.close()
self._libvirt_conn = None
self._xc = None # and pray it will get garbage-collected
def close(self):
libvirt.registerErrorHandler(None, None)
if self._xs:
self._xs.close()
self._xs = None
if self._libvirt_conn:
self._libvirt_conn.close()
self._libvirt_conn = None
self._xc = None # and pray it will get garbage-collected
def main():
args = parser.parse_args()
if args.debug:
LOG.setLevel(logging.DEBUG)
nova_config = []
if args.nova_config:
nova_config = [args.nova_config]
config.parse_args([], default_config_files=nova_config)
if args.mysql_connection:
config.CONF.set_override('connection', args.mysql_connection,
'database')
ctx = context.get_admin_context()
instance = objects.instance.Instance.get_by_uuid(ctx, args.instance)
compute_node = objects.compute_node.ComputeNode.get_by_host_and_nodename(
ctx, instance.host, instance.node)
if args.action not in ALLOWED_ACTIONS:
raise Exception("Allowed action are: %s" % ', '.join(ALLOWED_ACTIONS))
action = 'do_{}'.format(args.action)
eval(action)(instance, compute_node)
instance = objects.instance.Instance.get_by_uuid(ctx, args.instance)
compute_node = objects.compute_node.ComputeNode.get_by_host_and_nodename(
ctx, instance.host, instance.node)
print_status(instance, compute_node, "Current status:")
raw_input("Press ENTER to continue")
# NOTE(aostapenko) handling libvirt verbosity
def _error_handler(ctx, err):
pass
libvirt.registerErrorHandler(_error_handler, None)
libvirt.virEventRegisterDefaultImpl()
libvirt_host = host.Host('qemu:///system')
domain = libvirt_host.get_domain(instance)
total_pcpus = libvirt_host.get_connection().getInfo()[2]
vcpu_pcpu_map = calculate_vcpu_pcpu_map(instance, compute_node,
total_pcpus)
current_vcpu_pcpu_map = get_vcpu_pcpu_map_from_domain(domain)
print("Current libvirt pinnings:")
print_vcpu_pcpu_data(current_vcpu_pcpu_map)
print("Proposed libvirt pinnings, based on current pinning data from DB:")
print_vcpu_pcpu_data(vcpu_pcpu_map)
if (raw_input("Write 'apply' to apply proposed pinnings to domain: ") ==
'apply'):
apply_to_domain(domain, vcpu_pcpu_map)
print("Changes were applied to domain")
else:
print("Changes were NOT applied to domain")
print("Current libvirt pinnings:")
current_vcpu_pcpu_map = get_vcpu_pcpu_map_from_domain(domain)
print_vcpu_pcpu_data(current_vcpu_pcpu_map)
def setup_libvirt():
import libvirt
# Check libvirt version
assert (libvirt.getVersion() >= 9008) # 0.9.8
# Squash redundant reporting of libvirt errors to stderr. This modifies
# global state, since the Python bindings don't provide a way to do this
# per-connection.
libvirt.registerErrorHandler(lambda _ctx, _error: None, None)
def setup_libvirt():
import libvirt
# Check libvirt version
assert(libvirt.getVersion() >= 9008) # 0.9.8
# Squash redundant reporting of libvirt errors to stderr. This modifies
# global state, since the Python bindings don't provide a way to do this
# per-connection.
libvirt.registerErrorHandler(lambda _ctx, _error: None, None)
def libvirt_connect(url):
def _error_handler(_, err):
pytest.fail("!!! {}".format(err[2]), pytrace=False)
libvirt.registerErrorHandler(_error_handler, ctx=None)
virt = libvirt.open(url)
if not virt:
pytest.fail("Could not establish libvirt connection")
return virt
def libvirt_connect(url):
def _error_handler(_, err):
pytest.fail("!!! {}".format(err[2]), pytrace=False)
libvirt.registerErrorHandler(_error_handler, ctx=None)
virt = libvirt.open(url)
if not virt:
pytest.fail("Could not establish libvirt connection")
return virt
def disable_libvirt_error_logging():
def libvirt_errorhandler(userdata, error):
# A libvirt error handler to ignore annoying messages in stderr
pass
# Filter functions are enable only in production env
if cherrypy.config.get('environment') != 'production':
return
# Register the error handler to hide libvirt error in stderr
libvirt.registerErrorHandler(f=libvirt_errorhandler, ctx=None)
def disable_libvirt_error_logging():
def libvirt_errorhandler(userdata, error):
# A libvirt error handler to ignore annoying messages in stderr
pass
# Filter functions are enable only in production env
if cherrypy.config.get('environment') != 'production':
return
# Register the error handler to hide libvirt error in stderr
libvirt.registerErrorHandler(f=libvirt_errorhandler, ctx=None)
def disable_screen_error_logging():
def libvirt_errorhandler(userdata, error):
# A libvirt error handler to ignore annoying messages in stderr
pass
# Register the error handler to hide libvirt error in stderr
libvirt.registerErrorHandler(f=libvirt_errorhandler, ctx=None)
# Disable cherrypy screen logging, in order to log errors on kimchi
# file without displaying them on screen
cherrypy.log.screen = False
def disable_screen_error_logging():
def libvirt_errorhandler(userdata, error):
# A libvirt error handler to ignore annoying messages in stderr
pass
# Register the error handler to hide libvirt error in stderr
libvirt.registerErrorHandler(f=libvirt_errorhandler, ctx=None)
# Disable cherrypy screen logging, in order to log errors on kimchi
# file without displaying them on screen
cherrypy.log.screen = False
def __init__(self, vm_name):
"""Get config and setup logging."""
self.config = config.setup()
self.log = logging.getLogger(__name__)
def _error_handler(self, err):
msg = "Ignoring Libvirt error %s)" % err
pass
# Prevent libvirt errors from reaching the console
libvirt.registerErrorHandler(_error_handler, None)
def main(self):
"""Main method.
Set the URI, error handler, and executes event loop processing.
"""
uri = CONF.libvirt.connection_uri
LOG.debug("Using uri:" + uri)
# set error handler & do event loop
libvirt.registerErrorHandler(self._err_handler, '_virt_event')
self._virt_event(uri)
def main():
module = AnsibleModule(
argument_spec=dict(
name=dict(aliases=['net'], required=True),
state=dict(choices=all_states, default='present'),
uri=dict(default='qemu:///system'),
autostart=dict(
type='bool',
default=True), # FIXME: change is not implemented yet
xml=dict(),
),
supports_check_mode=True)
result = dict(changed=False, message='')
if not installed_libvirt_py:
module.fail_json(msg="'libvirt' python library is missing on host.")
libvirt.registerErrorHandler(eh_dummy, 'ctx') # apply dummy error handler
# connect to libvirt host
conn = libvirt.open(module.params['uri']) if not module.check_mode else \
libvirt.openReadOnly(module.params['uri'])
if not conn:
module.fail_json(msg="connection to libvirt failed.")
net_handle = None
# look for network
try:
net_handle = conn.networkLookupByName(module.params['name'])
except libvirt.libvirtError as e:
if e.get_error_code() != libvirt.VIR_ERR_NO_NETWORK:
module.fail_json(msg=str(e), debug=(e.get_error_code(), str(e)))
# apply state
if not net_handle and module.params['state'] == 'present':
result['changed'] = True
if not 'xml' in module.params or not module.params['xml']:
module.fail_json(msg="you should define a xml")
if not module.check_mode:
define_net(conn, module.params['name'], module.params['xml'],
module.params['autostart'])
elif net_handle and module.params['state'] == 'absent':
result['changed'] = True
if not module.check_mode:
undefine_net(net_handle)
elif module.params['state'] == 'leases':
if not net_handle:
module.fail_json(msg="net does not exist")
result['changed'] = False
result['leases'] = net_handle.DHCPLeases()
module.exit_json(**result)
def __init__(self, uri=None):
"""Creates a read only connection to libvirt"""
self.conn = libvirt.openReadOnly(uri)
if self.conn is None:
raise LibvirtConnectionError(
"Failed to open connection to the hypervisor: " + str(uri))
# We set this because when libvirt errors are raised, they are still
# printed to console (stderr) even if you catch them.
# This is a problem with libvirt API.
# See https://stackoverflow.com/questions/45541725/avoiding-console-prints-by-libvirt-qemu-python-apis
libvirt.registerErrorHandler(f=self.libvirt_callback, ctx=None)
def main(args):
ended = False
libvirt.registerErrorHandler(lambda x, y: None, None)
VirtuiConfig.loadconfig('~/.virtui.conf')
_change_terminal_title(VirtuiConfig.general('virtui_terminal_title'))
conn = Connection(VirtuiConfig.general('LIBVIRT_URI'))
while not ended:
domain = select_domain(conn)
if domain == None:
ended = True
break
manage_domain(domain)
def _set_libvirt_error_handler():
"""
Ignore libvirt error reporting, we just use exceptions
"""
import libvirt
def libvirt_callback(userdata, err):
ignore = userdata
ignore = err
ctx = None
libvirt.registerErrorHandler(libvirt_callback, ctx)
def main(args):
ended = False
libvirt.registerErrorHandler(lambda x, y: None, None)
VirtuiConfig.loadconfig('~/.virtui.conf')
_change_terminal_title(VirtuiConfig.general('virtui_terminal_title'))
conn = Connection(VirtuiConfig.general('LIBVIRT_URI'))
while not ended:
domain = select_domain(conn)
if domain == None:
ended = True
break
manage_domain(domain)
def get_libvirt_connection(name):
if name not in LIBVIRT_CONNECTIONS:
auth = [
[libvirt.VIR_CRED_AUTHNAME, libvirt.VIR_CRED_PASSPHRASE],
auth_callback, None
]
libvirt_url = config.get('libvirt_url', 'qemu:///system')
libvirt.registerErrorHandler(f=libvirt_callback, ctx=None)
LIBVIRT_CONNECTIONS[name] = libvirt.openAuth(libvirt_url, auth)
return LIBVIRT_CONNECTIONS[name]
def run(self):
loop.virEventLoopPureRegister()
libvirt.registerErrorHandler(error_handler, self)
while True:
try:
with self._conn as conn:
conn.registerCloseCallback(connection_close_callback, self)
conn.domainEventRegister(lifecycle_callback, self)
loop.virEventLoopPureRun()
except Exception as e:
error(e)
sleep(5)
def run(self):
loop.virEventLoopPureRegister()
libvirt.registerErrorHandler(error_handler, self)
while True:
try:
with self._conn as conn:
conn.registerCloseCallback(connection_close_callback, self)
conn.domainEventRegister(lifecycle_callback, self)
loop.virEventLoopPureRun()
except Exception as e:
error(e)
sleep(5)
def _create_connection():
libvirt.registerErrorHandler(_error_handler, ctx=None)
url = self.get_virt_url()
if not url:
raise error.ConnError("[libvirt] No connection url supplied")
virt = libvirt.open(url)
if not virt:
raise error.ConnError("[libvirt] Could not connect "
"to {}".format(url))
return virt
def __init__(self, logger, registerEvents=True):
self.changedCallback = None
self.logger = logger
self.virt = None
# Log libvirt errors
libvirt.registerErrorHandler(lambda ctx, error: None, None) #self.logger.exception(error), None)
try:
self.virt = libvirt.openReadOnly("")
# Register listener for domain changes if we are not in oneshot mode
if registerEvents:
self.virt.domainEventRegister(self.changed, None)
event.virtType = self.virt.getType()
except libvirt.libvirtError, e:
raise VirtError(str(e))
def _create_connection():
libvirt.registerErrorHandler(_error_handler, ctx=None)
url = self.get_virt_url()
if not url:
raise error.ConnError("[libvirt] No connection url supplied")
virt = libvirt.open(url)
if not virt:
raise error.ConnError("[libvirt] Could not connect "
"to {}".format(url))
return virt
def connect(self):
"""
Connect to the hypervisor.
"""
if self.connected is False:
try:
libvirt.registerErrorHandler(self.handler, 'context')
self.connection = libvirt.open(self.uri)
except libvirt.libvirtError:
self.connected = False
return None
else:
self.connected = True
return self.connection
def __init__(self, logger, config, dest, terminate_event=None,
interval=None, oneshot=False, registerEvents=True):
super(Libvirtd, self).__init__(logger, config, dest,
terminate_event=terminate_event,
interval=interval,
oneshot=oneshot)
self.changedCallback = None
self.registerEvents = registerEvents
self._host_capabilities_xml = None
self._host_socket_count = None
self._host_uuid = None
self._host_name = None
self.eventLoopThread = None
libvirt.registerErrorHandler(lambda ctx, error: None, None)
def main():
libvirt.virEventRegisterDefaultImpl()
libvirt.registerErrorHandler(handleLibvirtLibraryError, None)
worker = threading.Thread(target=work)
worker.setDaemon(True)
worker.start()
eventLoop = threading.Thread(target=virEventLoopNativeRun)
eventLoop.setDaemon(True)
eventLoop.start()
while True:
time.sleep(1)
def __init__(self, logger, config, dest, terminate_event=None,
interval=None, oneshot=False, registerEvents=True):
super(Libvirtd, self).__init__(logger, config, dest,
terminate_event=terminate_event,
interval=interval,
oneshot=oneshot)
self.changedCallback = None
self.registerEvents = registerEvents
self._host_capabilities_xml = None
self._host_socket_count = None
self._host_uuid = None
self._host_name = None
self.eventLoopThread = None
libvirt.registerErrorHandler(lambda ctx, error: None, None)
def __init__(self, logger, registerEvents=True):
self.changedCallback = None
self.logger = logger
self.virt = None
# Log libvirt errors
libvirt.registerErrorHandler(lambda ctx, error: None, None) #self.logger.exception(error), None)
try:
self.virt = libvirt.openReadOnly("")
# Register listener for domain changes if we are not in oneshot mode
if registerEvents:
self.virt.domainEventRegister(self.changed, None)
event.virtType = self.virt.getType()
except libvirt.libvirtError, e:
raise VirtError(str(e))
def connect(self):
"""
Connect to the hypervisor.
"""
if self.connected is False:
try:
libvirt.registerErrorHandler(self.handler, 'context')
self.connection = libvirt.open(self.uri)
except libvirt.libvirtError:
self.connected = False
return None
else:
self.connected = True
return self.connection
def initialize(self):
# prepare libvirt
libvirt.registerErrorHandler(self._native_libvirt_error_handler, None)
libvirt.virEventRegisterDefaultImpl()
# start native listening thread
self._native_event_queue = native_queue.Queue()
self._event_thread = native_threading.Thread(
target=self._native_thread)
self._event_thread.setDaemon(True)
self._event_thread.start()
# prepare dispatching greenthread
eventlet.spawn_n(self._dispatch_event)
def __init__(self):
"""Get config and setup loggings."""
self.config = config.setup()
self.log = logging.getLogger(__name__)
#This block gets interface and interface type from config file
self._lookupInterfaces()
#And this one does the same for disks.
self._lookupDisks()
self.search_headers = self.config.get('VM', 'search_headers', 'name,uuid')
self.headers = self.search_headers.split(',')
def _error_handler(self, err):
msg = "Ignoring Libvirt error %s)" % err
pass
# Prevent libvirt errors from reaching the console
libvirt.registerErrorHandler(_error_handler, None)
def register_libvirt_error_handler():
"""
Ignore libvirt error reporting, we just use exceptions
"""
def libvirt_callback(userdata, err):
ignore = userdata
ignore = err
def libxml2_callback(userdata, err):
ignore = userdata
logging.debug("libxml2 callback error: %s", err)
libvirt.registerErrorHandler(f=libvirt_callback, ctx=None)
import libxml2
libxml2.registerErrorHandler(f=libxml2_callback, ctx=None)
def init_vmm_connection(self):
if self._libvirt_conn is not None:
# Already initialized
return
if self._offline_mode:
# Do not initialize in offline mode
return
if 'xen.lowlevel.xs' in sys.modules:
self._xs = xen.lowlevel.xs.xs()
self._libvirt_conn = libvirt.open(defaults['libvirt_uri'])
if self._libvirt_conn == None:
raise QubesException("Failed connect to libvirt driver")
libvirt.registerErrorHandler(self._libvirt_error_handler, None)
atexit.register(self._libvirt_conn.close)
def run(self, params, args):
if not len(args):
self.abort('must supply at least one host')
for node in self.newdb.getNodesfromNames(args,
preload=['vm_defs', 'vm_defs.disks']):
self.runPlugins(node)
vmnodeid = None
mem = None
cpus = None
macs = None
disks = None
#
# get the name of the physical node that hosts
# this VM
#
if node.vm_defs and node.vm_defs.physNode:
#
# try to undefine the domain in libvirt
#
libvirt.registerErrorHandler(handler, 'context')
try:
hipervisor = libvirt.open(rocks.vmconstant.connectionURL \
% node.vm_defs.physNode.name)
dom = hipervisor.lookupByName(node.name)
dom.undefine()
except libvirt.libvirtError, m:
if 'unable to connect' in str(m):
# connection problem just report it do not fail
print "Warning (libvirt): ", m
# the domain was not defined, no big deal
pass
#
# now remove the relevant rows in the database for
# this VM
#
if node.vm_defs:
s = self.newdb.getSession()
s.delete(node.vm_defs)
for disk in node.vm_defs.disks:
s.delete(disk)
def init_vmm_connection(self):
'''Initialise connection
This method is automatically called when getting'''
if self._libvirt_conn is not None:
# Already initialized
return
if self._offline_mode:
# Do not initialize in offline mode
raise qubes.exc.QubesException(
'VMM operations disabled in offline mode')
if 'xen.lowlevel.xs' in sys.modules:
self._xs = xen.lowlevel.xs.xs()
if 'xen.lowlevel.xc' in sys.modules:
self._xc = xen.lowlevel.xc.xc()
self._libvirt_conn = VirConnectWrapper(
qubes.config.defaults['libvirt_uri'])
libvirt.registerErrorHandler(self._libvirt_error_handler, None)
def __init__(self):
self.lock = threading.RLock()
try:
# try to use libvirt
import libvirt
libvirt.virInitialize()
globals()["libvirt"] = libvirt
# register an ErrorCallback
def errHandler(ctx, error):
# log.debug("backend error: %s" % (error,))
pass
libvirt.registerErrorHandler(errHandler, None)
self.con = libvirt.open(None)
log.info("backend connected to libvirt")
except:
log.error("could not connect to xen backend!")
raise
