def __init__(self):
self.queryclient = LazyLoader(
importutils.import_class(
'nova.scheduler.client.query.SchedulerQueryClient'))
self.reportclient = LazyLoader(
importutils.import_class(
'nova.scheduler.client.report.SchedulerReportClient'))
def _get_response_code(self, req):
req_method = req.environ['REQUEST_METHOD']
controller = importutils.import_class('keystone.common.controller')
code = None
if isinstance(self, controller.V3Controller) and req_method == 'POST':
code = (201, 'Created')
return code
def __init__(self, host, binary, topic, manager, report_interval=None,
periodic_interval=None, periodic_fuzzy_delay=None,
service_name=None, *args, **kwargs):
super(Service, self).__init__()
if not rpc.initialized():
rpc.init(CONF)
self.host = host
self.binary = binary
self.topic = topic
self.manager_class_name = manager
manager_class = importutils.import_class(self.manager_class_name)
manager_class = profiler.trace_cls("rpc")(manager_class)
self.manager = manager_class(host=self.host,
service_name=service_name,
*args, **kwargs)
self.report_interval = report_interval
self.periodic_interval = periodic_interval
self.periodic_fuzzy_delay = periodic_fuzzy_delay
self.basic_config_check()
self.saved_args, self.saved_kwargs = args, kwargs
self.timers = []
setup_profiler(binary, host)
def __init__(self, *args, **kwargs):
"""Initialize the driver."""
super(XIVDS8KDriver, self).__init__(*args, **kwargs)
self.configuration.append_config_values(xiv_ds8k_opts)
proxy = importutils.import_class(self.configuration.xiv_ds8k_proxy)
# NOTE: All Array specific configurations are prefixed with:
# "xiv_ds8k_array_"
# These additional flags should be specified in the cinder.conf
# preferably in each backend configuration.
self.xiv_ds8k_proxy = proxy(
{
"xiv_ds8k_user": self.configuration.san_login,
"xiv_ds8k_pass": self.configuration.san_password,
"xiv_ds8k_address": self.configuration.san_ip,
"xiv_ds8k_vol_pool": self.configuration.san_clustername,
"xiv_ds8k_connection_type":
self.configuration.xiv_ds8k_connection_type,
"xiv_chap": self.configuration.xiv_chap
},
LOG,
exception,
driver=self)
def start(self):
LOG.debug('IPABackend start')
self.request = requests.Session()
authclassname = cfg.CONF[self.name].ipa_auth_driver_class
authclass = importutils.import_class(authclassname)
self.request.auth = \
authclass(cfg.CONF[self.name].ipa_client_keytab,
cfg.CONF[self.name].ipa_host)
ipa_base_url = cfg.CONF[self.name].ipa_base_url
if ipa_base_url.startswith("http"): # full URL
self.baseurl = ipa_base_url
else: # assume relative to https://host[:port]
self.baseurl = "https://" + cfg.CONF[self.name].ipa_host
ipa_port = cfg.CONF[self.name].ipa_port
if ipa_port != IPA_DEFAULT_PORT:
self.baseurl += ":" + str(ipa_port)
self.baseurl += ipa_base_url
ipa_json_url = cfg.CONF[self.name].ipa_json_url
if ipa_json_url.startswith("http"): # full URL
self.jsonurl = ipa_json_url
else: # assume relative to https://host[:port]
self.jsonurl = self.baseurl + ipa_json_url
xtra_hdrs = {'Content-Type': 'application/json',
'Referer': self.baseurl}
self.request.headers.update(xtra_hdrs)
self.request.verify = cfg.CONF[self.name].ipa_ca_cert
self.ntries = cfg.CONF[self.name].ipa_connect_retries
self.force = cfg.CONF[self.name].ipa_force_ns_use
def __init__(self, host, binary, topic, manager, report_interval=None,
periodic_interval=None, periodic_fuzzy_delay=None,
service_name=None, *args, **kwargs):
super(Service, self).__init__()
if not rpc.initialized():
rpc.init(CONF)
self.host = host
self.binary = binary
self.topic = topic
self.manager_class_name = manager
manager_class = importutils.import_class(self.manager_class_name)
manager_class = profiler.trace_cls("rpc")(manager_class)
self.manager = manager_class(host=self.host,
service_name=service_name,
*args, **kwargs)
self.report_interval = report_interval
self.periodic_interval = periodic_interval
self.periodic_fuzzy_delay = periodic_fuzzy_delay
self.basic_config_check()
self.saved_args, self.saved_kwargs = args, kwargs
self.timers = []
setup_profiler(binary, host)
def __init__(self, *args, **kwargs):
"""Initialize the driver."""
super(XIVDS8KDriver, self).__init__(*args, **kwargs)
self.configuration.append_config_values(xiv_ds8k_opts)
proxy = importutils.import_class(self.configuration.xiv_ds8k_proxy)
# NOTE: All Array specific configurations are prefixed with:
# "xiv_ds8k_array_"
# These additional flags should be specified in the cinder.conf
# preferably in each backend configuration.
self.xiv_ds8k_proxy = proxy(
{
"xiv_ds8k_user": self.configuration.san_login,
"xiv_ds8k_pass": self.configuration.san_password,
"xiv_ds8k_address": self.configuration.san_ip,
"xiv_ds8k_vol_pool": self.configuration.san_clustername,
"xiv_ds8k_connection_type":
self.configuration.xiv_ds8k_connection_type,
"xiv_chap": self.configuration.xiv_chap
},
LOG,
exception,
driver=self)
def __init__(self, application, limits=None, limiter=None, **kwargs):
"""Initialize new `RateLimitingMiddleware`.
`RateLimitingMiddleware` wraps the given WSGI application and
sets up the given limits.
@param application: WSGI application to wrap
@param limits: String describing limits
@param limiter: String identifying class for representing limits
Other parameters are passed to the constructor for the limiter.
"""
base_wsgi.Middleware.__init__(self, application)
# Select the limiter class
if limiter is None:
limiter = Limiter
else:
limiter = importutils.import_class(limiter)
# Parse the limits, if any are provided
if limits is not None:
limits = limiter.parse_limits(limits)
self._limiter = limiter(limits or DEFAULT_LIMITS, **kwargs)
def do_request(self, method, **kwargs):
"""
Simple do_request override. This method serializes
the outgoing body and builds the command that will
be sent.
:params method: The remote python method to call
:params kwargs: Dynamic parameters that will be
passed to the remote method.
"""
content = self.bulk_request([{'command': method,
'kwargs': kwargs}])
# NOTE(flaper87): Return the first result if
# a single command was executed.
content = content[0]
# NOTE(flaper87): Check if content is an error
# and re-raise it if raise_exc is True. Before
# checking if content contains the '_error' key,
# verify if it is an instance of dict - since the
# RPC call may have returned something different.
if self.raise_exc and (isinstance(content, dict)
and '_error' in content):
error = content['_error']
try:
exc_cls = imp.import_class(error['cls'])
raise exc_cls(error['val'])
except ImportError:
# NOTE(flaper87): The exception
# class couldn't be imported, using
# a generic exception.
raise exception.RPCError(**error)
return content
def do_request(self, method, **kwargs):
"""
Simple do_request override. This method serializes
the outgoing body and builds the command that will
be sent.
:params method: The remote python method to call
:params kwargs: Dynamic parameters that will be
passed to the remote method.
"""
content = self.bulk_request([{'command': method, 'kwargs': kwargs}])
# NOTE(flaper87): Return the first result if
# a single command was executed.
content = content[0]
# NOTE(flaper87): Check if content is an error
# and re-raise it if raise_exc is True. Before
# checking if content contains the '_error' key,
# verify if it is an instance of dict - since the
# RPC call may have returned something different.
if self.raise_exc and (isinstance(content, dict)
and '_error' in content):
error = content['_error']
try:
exc_cls = imp.import_class(error['cls'])
raise exc_cls(error['val'])
except ImportError:
# NOTE(flaper87): The exception
# class couldn't be imported, using
# a generic exception.
raise exception.RPCError(**error)
return content
def __init__(self, app, conf, **local_conf):
# Determine the context class to use
self.ctxcls = RequestContext
if 'context_class' in local_conf:
self.ctxcls = importutils.import_class(local_conf['context_class'])
super(ContextMiddleware, self).__init__(app)
def __init__(self, host, binary, topic, manager, report_interval=None,
periodic_enable=None, periodic_fuzzy_delay=None,
periodic_interval_max=None, db_allowed=True,
*args, **kwargs):
super(Service, self).__init__()
self.host = host
self.binary = binary
self.topic = topic
self.manager_class_name = manager
# NOTE(russellb) We want to make sure to create the servicegroup API
# instance early, before creating other things such as the manager,
# that will also create a servicegroup API instance. Internally, the
# servicegroup only allocates a single instance of the driver API and
# we want to make sure that our value of db_allowed is there when it
# gets created. For that to happen, this has to be the first instance
# of the servicegroup API.
self.servicegroup_api = servicegroup.API(db_allowed=db_allowed)
manager_class = importutils.import_class(self.manager_class_name)
self.manager = manager_class(host=self.host, *args, **kwargs)
self.rpcserver = None
self.report_interval = report_interval
self.periodic_enable = periodic_enable
self.periodic_fuzzy_delay = periodic_fuzzy_delay
self.periodic_interval_max = periodic_interval_max
self.saved_args, self.saved_kwargs = args, kwargs
self.backdoor_port = None
self.conductor_api = conductor.API(use_local=db_allowed)
self.conductor_api.wait_until_ready(context.get_admin_context())
def __init__(self, plugin):
self._resource_name = RESOURCE_NAME
self._plugin = plugin
self._driver = importutils.import_class(
cfg.CONF.QUOTAS.quota_driver
)
self._update_extended_attributes = True
def __init__(self, app, conf, **local_conf):
# Determine the context class to use
self.ctxcls = RequestContext
if 'context_class' in local_conf:
self.ctxcls = importutils.import_class(local_conf['context_class'])
super(ContextMiddleware, self).__init__(app)
def _get_response_code(self, req):
req_method = req.environ['REQUEST_METHOD']
controller = importutils.import_class('keystone.common.controller')
code = None
if isinstance(self, controller.V3Controller) and req_method == 'POST':
code = (201, 'Created')
return code
def __init__(self, virtapi):
super(DockerDriver, self).__init__(virtapi)
self._docker = None
vif_class = importutils.import_class(CONF.docker.vif_driver)
self.vif_driver = vif_class()
self.firewall_driver = firewall.load_driver(
default='nova.virt.firewall.NoopFirewallDriver')
def load_driver(plugin, ofc_manager):
if (PROVIDER_OPENFLOW in ROUTER_DRIVER_MAP and
not ofc_manager.driver.router_supported):
LOG.warning(
_('OFC does not support router with provider=%(provider)s, '
'so removed it from supported provider '
'(new router driver map=%(driver_map)s)'),
{'provider': PROVIDER_OPENFLOW,
'driver_map': ROUTER_DRIVER_MAP})
del ROUTER_DRIVER_MAP[PROVIDER_OPENFLOW]
if config.PROVIDER.default_router_provider not in ROUTER_DRIVER_MAP:
LOG.error(_('default_router_provider %(default)s is supported! '
'Please specify one of %(supported)s'),
{'default': config.PROVIDER.default_router_provider,
'supported': ROUTER_DRIVER_MAP.keys()})
raise SystemExit(1)
enabled_providers = (set(config.PROVIDER.router_providers +
[config.PROVIDER.default_router_provider]) &
set(ROUTER_DRIVER_MAP.keys()))
for driver in enabled_providers:
driver_klass = importutils.import_class(ROUTER_DRIVER_MAP[driver])
ROUTER_DRIVERS[driver] = driver_klass(plugin, ofc_manager)
LOG.info(_('Enabled router drivers: %s'), ROUTER_DRIVERS.keys())
if not ROUTER_DRIVERS:
LOG.error(_('No router provider is enabled. neutron-server terminated!'
' (supported=%(supported)s, configured=%(config)s)'),
{'supported': ROUTER_DRIVER_MAP.keys(),
'config': config.PROVIDER.router_providers})
raise SystemExit(1)
def __init__(self, host, binary, topic, manager, report_interval=None,
periodic_enable=None, periodic_fuzzy_delay=None,
periodic_interval_max=None, db_allowed=True,
*args, **kwargs):
super(Service, self).__init__()
self.host = host
self.binary = binary
self.topic = topic
self.manager_class_name = manager
# NOTE(russellb) We want to make sure to create the servicegroup API
# instance early, before creating other things such as the manager,
# that will also create a servicegroup API instance. Internally, the
# servicegroup only allocates a single instance of the driver API and
# we want to make sure that our value of db_allowed is there when it
# gets created. For that to happen, this has to be the first instance
# of the servicegroup API.
self.servicegroup_api = servicegroup.API(db_allowed=db_allowed)
manager_class = importutils.import_class(self.manager_class_name)
self.manager = manager_class(host=self.host, *args, **kwargs)
self.rpcserver = None
self.report_interval = report_interval
self.periodic_enable = periodic_enable
self.periodic_fuzzy_delay = periodic_fuzzy_delay
self.periodic_interval_max = periodic_interval_max
self.saved_args, self.saved_kwargs = args, kwargs
self.backdoor_port = None
self.conductor_api = conductor.API(use_local=db_allowed)
self.conductor_api.wait_until_ready(context.get_admin_context())
def __init__(self, application, limits=None, limiter=None, **kwargs):
"""Initialize new `RateLimitingMiddleware`.
`RateLimitingMiddleware` wraps the given WSGI application and
sets up the given limits.
@param application: WSGI application to wrap
@param limits: String describing limits
@param limiter: String identifying class for representing limits
Other parameters are passed to the constructor for the limiter.
"""
base_wsgi.Middleware.__init__(self, application)
# Select the limiter class
if limiter is None:
limiter = Limiter
else:
limiter = importutils.import_class(limiter)
# Parse the limits, if any are provided
if limits is not None:
limits = limiter.parse_limits(limits)
self._limiter = limiter(limits or DEFAULT_LIMITS, **kwargs)
def _get_response_code(self, req):
req_method = req.environ["REQUEST_METHOD"]
controller = importutils.import_class("keystone.common.controller")
code = None
if isinstance(self, controller.V3Controller) and req_method == "POST":
code = (201, "Created")
return code
def __init__(self, virtapi):
super(DockerDriver, self).__init__(virtapi)
self._docker = None
vif_class = importutils.import_class(CONF.docker.vif_driver)
self.vif_driver = vif_class()
self.firewall_driver = firewall.load_driver(
default='nova.virt.firewall.NoopFirewallDriver')
def _setup_helpers(self):
"""Initializes protocol-specific NAS drivers."""
for helper_str in self.configuration.share_helpers:
share_proto, __, import_str = helper_str.partition('=')
helper = importutils.import_class(import_str)
self._helpers[share_proto.upper()] = helper(
self._execute, self._ssh_exec, self.configuration)
def _lookup_extension(self):
try:
return (importutils.import_class(
"powervc.common.client.extensions.%s.Client" %
(self.base_name)))
except ImportError:
return None
return None
def _setup_helpers(self):
"""Initializes protocol-specific NAS drivers."""
self._helpers = {}
for helper_str in self.configuration.gpfs_share_helpers:
share_proto, _, import_str = helper_str.partition('=')
helper = importutils.import_class(import_str)
self._helpers[share_proto.upper()] = helper(self._gpfs_execute,
self.configuration)
def InstanceActionAPI(*args, **kwargs):
"""Returns the 'InstanceActionAPI' class from the same module as the
configured compute api.
"""
compute_api_class_name = _get_compute_api_class_name()
compute_api_class = importutils.import_class(compute_api_class_name)
class_name = compute_api_class.__module__ + ".InstanceActionAPI"
return importutils.import_object(class_name, *args, **kwargs)
def InstanceActionAPI(*args, **kwargs):
"""Returns the 'InstanceActionAPI' class from the same module as the
configured compute api.
"""
compute_api_class_name = _get_compute_api_class_name()
compute_api_class = importutils.import_class(compute_api_class_name)
class_name = compute_api_class.__module__ + ".InstanceActionAPI"
return importutils.import_object(class_name, *args, **kwargs)
def from_primitive(primitive):
"""
Construct an object from primitive types
This is used while deserializing the object.
"""
cls = importutils.import_class(primitive['chimera_object.name'])
return cls._obj_from_primitive(primitive)
def get_store_location_class(self):
"""
Returns the store location class that is used by this store.
"""
if not self.store_location_class:
class_name = "%s.StoreLocation" % (self.__module__)
LOG.debug("Late loading location class %s", class_name)
self.store_location_class = importutils.import_class(class_name)
return self.store_location_class
def get_store_location_class(self):
"""
Returns the store location class that is used by this store.
"""
if not self.store_location_class:
class_name = "%s.StoreLocation" % (self.__module__)
LOG.debug("Late loading location class %s", class_name)
self.store_location_class = importutils.import_class(class_name)
return self.store_location_class
def __init__(self, app, conf, **local_conf):
cfg.CONF.register_opts(self.opts)
# Determine the context class to use
self.ctxcls = RequestContext
if "context_class" in local_conf:
self.ctxcls = importutils.import_class(local_conf["context_class"])
super(ContextMiddleware, self).__init__(app)
def _get_sample_path(cls, name, dirname, suffix=''):
parts = [dirname]
parts.append('api_samples')
if cls.all_extensions:
parts.append('all_extensions')
if cls.extension_name:
alias = importutils.import_class(cls.extension_name).alias
parts.append(alias)
parts.append(name + "." + cls.ctype + suffix)
return os.path.join(*parts)
def _get_sample_path(cls, name, dirname, suffix=''):
parts = [dirname]
parts.append('api_samples')
if cls.all_extensions:
parts.append('all_extensions')
if cls.extension_name:
alias = importutils.import_class(cls.extension_name).alias
parts.append(alias)
parts.append(name + "." + cls.ctype + suffix)
return os.path.join(*parts)
def get_datasource_schema(cls, datasource_id):
datasource = datasources_db.get_datasource(datasource_id)
if not datasource:
raise DatasourceNotFound(id=datasource_id)
driver = cls.get_driver_info(datasource.driver)
if driver:
# NOTE(arosen): raises if not found
driver = cls.get_driver_info(driver['id'])
obj = importutils.import_class(driver['module'])
return obj.get_schema()
def monkey_patch():
"""Patch decorator.
If the Flags.monkey_patch set as True,
this function patches a decorator
for all functions in specified modules.
You can set decorators for each modules
using CONF.monkey_patch_modules.
The format is "Module path:Decorator function".
Example: 'manila.api.ec2.cloud:' \
manila.openstack.common.notifier.api.notify_decorator'
Parameters of the decorator is as follows.
(See manila.openstack.common.notifier.api.notify_decorator)
name - name of the function
function - object of the function
"""
# If CONF.monkey_patch is not True, this function do nothing.
if not CONF.monkey_patch:
return
# Get list of modules and decorators
for module_and_decorator in CONF.monkey_patch_modules:
module, decorator_name = module_and_decorator.split(':')
# import decorator function
decorator = importutils.import_class(decorator_name)
__import__(module)
# Retrieve module information using pyclbr
module_data = pyclbr.readmodule_ex(module)
for key in module_data.keys():
# set the decorator for the class methods
if isinstance(module_data[key], pyclbr.Class):
clz = importutils.import_class("%s.%s" % (module, key))
for method, func in inspect.getmembers(clz, inspect.ismethod):
setattr(
clz, method,
decorator("%s.%s.%s" % (module, key, method), func))
# set the decorator for the function
if isinstance(module_data[key], pyclbr.Function):
func = importutils.import_class("%s.%s" % (module, key))
setattr(sys.modules[module], key,
decorator("%s.%s" % (module, key), func))
def monkey_patch():
"""Patch decorator.
If the Flags.monkey_patch set as True,
this function patches a decorator
for all functions in specified modules.
You can set decorators for each modules
using CONF.monkey_patch_modules.
The format is "Module path:Decorator function".
Example: 'manila.api.ec2.cloud:' \
manila.openstack.common.notifier.api.notify_decorator'
Parameters of the decorator is as follows.
(See manila.openstack.common.notifier.api.notify_decorator)
name - name of the function
function - object of the function
"""
# If CONF.monkey_patch is not True, this function do nothing.
if not CONF.monkey_patch:
return
# Get list of modules and decorators
for module_and_decorator in CONF.monkey_patch_modules:
module, decorator_name = module_and_decorator.split(':')
# import decorator function
decorator = importutils.import_class(decorator_name)
__import__(module)
# Retrieve module information using pyclbr
module_data = pyclbr.readmodule_ex(module)
for key in module_data.keys():
# set the decorator for the class methods
if isinstance(module_data[key], pyclbr.Class):
clz = importutils.import_class("%s.%s" % (module, key))
for method, func in inspect.getmembers(clz, inspect.ismethod):
setattr(
clz, method,
decorator("%s.%s.%s" % (module, key, method), func))
# set the decorator for the function
if isinstance(module_data[key], pyclbr.Function):
func = importutils.import_class("%s.%s" % (module, key))
setattr(sys.modules[module], key,
decorator("%s.%s" % (module, key), func))
def get_datasource_schema(cls, datasource_id):
datasource = datasources_db.get_datasource(datasource_id)
if not datasource:
raise DatasourceNotFound(id=datasource_id)
driver = cls.get_driver_info(datasource.driver)
if driver:
# NOTE(arosen): raises if not found
driver = cls.get_driver_info(
driver['id'])
obj = importutils.import_class(driver['module'])
return obj.get_schema()
def init_driver(self):
"""
Create the driver for the cache
"""
driver_name = CONF.image_cache_driver
driver_module = (__name__ + '.drivers.' + driver_name + '.Driver')
try:
self.driver_class = importutils.import_class(driver_module)
LOG.info(_LI("Image cache loaded driver '%s'.") %
driver_name)
except ImportError as import_err:
LOG.warn(_LW("Image cache driver "
"'%(driver_name)s' failed to load. "
"Got error: '%(import_err)s."),
{'driver_name': driver_name,
'import_err': import_err})
driver_module = __name__ + '.drivers.sqlite.Driver'
LOG.info(_LI("Defaulting to SQLite driver."))
self.driver_class = importutils.import_class(driver_module)
self.configure_driver()
def validate_configured_drivers(cls):
result = {}
for driver_path in cfg.CONF.drivers:
obj = importutils.import_class(driver_path)
driver = obj.get_datasource_info()
if driver['id'] in result:
raise BadConfig(_("There is a driver loaded already with the"
"driver name of %s")
% driver['id'])
driver['module'] = driver_path
result[driver['id']] = driver
cls.loaded_drivers = result
def get_client_class(version):
version_map = {
'1': 'madclient.v1.client.Client',
}
try:
client_path = version_map[str(version)]
except (KeyError, ValueError):
msg = "Invalid client version '%s'. must be one of: %s" % (
(version, ', '.join(version_map)))
raise exceptions.UnsupportedVersion(msg)
return importutils.import_class(client_path)
def validate_configured_drivers(cls):
result = {}
for driver_path in cfg.CONF.drivers:
obj = importutils.import_class(driver_path)
driver = obj.get_datasource_info()
if driver['id'] in result:
raise BadConfig(
_("There is a driver loaded already with the"
"driver name of %s") % driver['id'])
driver['module'] = driver_path
result[driver['id']] = driver
cls.loaded_drivers = result
def new_task_executor(self, context):
try:
executor_cls = ('glance.async.%s_executor.'
'TaskExecutor' % CONF.task.task_executor)
LOG.debug("Loading %s executor" % CONF.task.task_executor)
executor = importutils.import_class(executor_cls)
return executor(context, self.task_repo, self.image_repo,
self.image_factory)
except ImportError:
with excutils.save_and_reraise_exception():
LOG.exception(
_LE("Failed to load the %s executor provided "
"in the config.") % CONF.task.task_executor)
def get_client_class(version):
version_map = {
'1.0': 'fsgatewayclient.v1_0.client.Client',
}
try:
client_path = version_map[str(version)]
except (KeyError, ValueError):
msg = _("Invalid client version '%(version)s'. must be one of: "
"%(keys)s") % {'version': version,
'keys': ', '.join(version_map.keys())}
raise exceptions.UnsupportedVersion(msg)
return importutils.import_class(client_path)
def API(config_group_name=None):
"""Selects class and config group of network plugin.
:param config_group_name: name of config group to be used for
registration of networking opts.
:returns: instance of networking plugin class
"""
CONF.register_opts(network_opts, group=config_group_name)
if config_group_name:
network_api_class = getattr(CONF, config_group_name).network_api_class
else:
network_api_class = CONF.network_api_class
cls = importutils.import_class(network_api_class)
return cls(config_group_name=config_group_name)
def _get_plugin_instance(self, namespace, plugin_provider):
try:
# Try to resolve plugin by name
mgr = driver.DriverManager(namespace, plugin_provider)
plugin_class = mgr.driver
except RuntimeError as e1:
# fallback to class name
try:
plugin_class = importutils.import_class(plugin_provider)
except ImportError as e2:
LOG.exception(_LE("Error loading plugin by name, %s"), e1)
LOG.exception(_LE("Error loading plugin by class, %s"), e2)
raise ImportError(_("Plugin not found."))
return plugin_class()
def _get_plugin_instance(self, namespace, plugin_provider):
try:
# Try to resolve plugin by name
mgr = driver.DriverManager(namespace, plugin_provider)
plugin_class = mgr.driver
except RuntimeError as e1:
# fallback to class name
try:
plugin_class = importutils.import_class(plugin_provider)
except ImportError as e2:
LOG.exception(_LE("Error loading plugin by name, %s"), e1)
LOG.exception(_LE("Error loading plugin by class, %s"), e2)
raise ImportError(_("Plugin not found."))
return plugin_class()
def API(config_group_name=None):
"""Selects class and config group of network plugin.
:param config_group_name: name of config group to be used for
registration of networking opts.
:returns: instance of networking plugin class
"""
CONF.register_opts(network_opts, group=config_group_name)
if config_group_name:
network_api_class = getattr(CONF, config_group_name).network_api_class
else:
network_api_class = CONF.network_api_class
cls = importutils.import_class(network_api_class)
return cls(config_group_name=config_group_name)
def __init__(self, host, binary, topic, manager, report_interval=None,
periodic_interval=None, periodic_fuzzy_delay=None,
*args, **kwargs):
self.binary = binary
self.manager_class_name = manager
manager_class = importutils.import_class(self.manager_class_name)
self.manager = manager_class(host=host, *args, **kwargs)
self.report_interval = report_interval
self.periodic_interval = periodic_interval
self.periodic_fuzzy_delay = periodic_fuzzy_delay
self.saved_args, self.saved_kwargs = args, kwargs
self.timers = []
super(Service, self).__init__(host, topic, manager=self.manager)
def new_task_executor(self, context):
try:
executor_cls = ('glance.async.%s_executor.'
'TaskExecutor' % CONF.task.task_executor)
LOG.debug("Loading %s executor" % CONF.task.task_executor)
executor = importutils.import_class(executor_cls)
return executor(context,
self.task_repo,
self.image_repo,
self.image_factory)
except ImportError:
with excutils.save_and_reraise_exception():
LOG.exception(_LE("Failed to load the %s executor provided "
"in the config.") % CONF.task.task_executor)
def get_client_class(api_name, version, version_map):
"""Returns the client class for the requested API version
:param api_name: the name of the API, e.g. 'compute', 'image', etc
:param version: the requested API version
:param version_map: a dict of client classes keyed by version
:rtype: a client class for the requested API version
"""
try:
client_path = version_map[str(version)]
except (KeyError, ValueError):
msg = "Invalid %s client version '%s'. must be one of: %s" % (
(api_name, version, ', '.join(version_map.keys())))
raise exceptions.UnsupportedVersion(msg)
return importutils.import_class(client_path)
def __init__(self, host=None):
super(DhcpAgent, self).__init__(host=host)
self.needs_resync_reasons = collections.defaultdict(list)
self.conf = cfg.CONF
self.cache = NetworkCache()
self.root_helper = config.get_root_helper(self.conf)
self.dhcp_driver_cls = importutils.import_class(self.conf.dhcp_driver)
ctx = context.get_admin_context_without_session()
self.plugin_rpc = DhcpPluginApi(topics.PLUGIN,
ctx, self.conf.use_namespaces)
# create dhcp dir to store dhcp info
dhcp_dir = os.path.dirname("/%s/dhcp/" % self.conf.state_path)
if not os.path.isdir(dhcp_dir):
os.makedirs(dhcp_dir, 0o755)
self.dhcp_version = self.dhcp_driver_cls.check_version()
self._populate_networks_cache()
def get_client_class(api_name, version, version_map):
"""Returns the client class for the requested API version
:param api_name: the name of the API, e.g. 'compute', 'image', etc
:param version: the requested API version
:param version_map: a dict of client classes keyed by version
:rtype: a client class for the requested API version
"""
try:
client_path = version_map[str(version)]
except (KeyError, ValueError):
msg = "Invalid %s client version '%s'. must be one of: %s" % (
(api_name, version, ', '.join(version_map.keys())))
raise exceptions.UnsupportedVersion(msg)
return importutils.import_class(client_path)
def __init__(self, host=None):
super(DhcpAgent, self).__init__(host=host)
self.needs_resync_reasons = collections.defaultdict(list)
self.conf = cfg.CONF
self.cache = NetworkCache()
self.root_helper = config.get_root_helper(self.conf)
self.dhcp_driver_cls = importutils.import_class(self.conf.dhcp_driver)
ctx = context.get_admin_context_without_session()
self.plugin_rpc = DhcpPluginApi(topics.PLUGIN, ctx,
self.conf.use_namespaces)
# create dhcp dir to store dhcp info
dhcp_dir = os.path.dirname("/%s/dhcp/" % self.conf.state_path)
if not os.path.isdir(dhcp_dir):
os.makedirs(dhcp_dir, 0o755)
self.dhcp_version = self.dhcp_driver_cls.check_version()
self._populate_networks_cache()
def load_extension(self, ext_factory):
"""Execute an extension factory.
Loads an extension. The 'ext_factory' is the name of a
callable that will be imported and called with one
argument--the extension manager. The factory callable is
expected to call the register() method at least once.
"""
LOG.debug("Loading extension %s", ext_factory)
# Load the factory
factory = importutils.import_class(ext_factory)
# Call it
LOG.debug("Calling extension factory %s", ext_factory)
factory(self)
def load_extension(self, ext_factory):
"""Execute an extension factory.
Loads an extension. The 'ext_factory' is the name of a
callable that will be imported and called with one
argument--the extension manager. The factory callable is
expected to call the register() method at least once.
"""
LOG.debug("Loading extension %s", ext_factory)
# Load the factory
factory = importutils.import_class(ext_factory)
# Call it
LOG.debug("Calling extension factory %s", ext_factory)
factory(self)
def get_client_class(api_name, version, version_map):
"""Returns the client class for the requested API version.
:param api_name: the name of the API, e.g. 'compute', 'image', etc
:param version: the requested API version
:param version_map: a dict of client classes keyed by version
:rtype: a client class for the requested API version
"""
try:
client_path = version_map[str(version)]
except (KeyError, ValueError):
msg = _("Invalid %(api_name)s client version '%(version)s'. must be "
"one of: %(map_keys)s")
msg = msg % {'api_name': api_name, 'version': version,
'map_keys': ', '.join(version_map.keys())}
raise exceptions.UnsupportedVersion(msg)
return importutils.import_class(client_path)
def configure_cache_region(region):
"""Configure a cache region.
:param region: optional CacheRegion object, if not provided a new region
will be instantiated
:raises: exception.ValidationError
:returns: dogpile.cache.CacheRegion
"""
if not isinstance(region, dogpile.cache.CacheRegion):
raise exception.ValidationError(
_('region not type dogpile.cache.CacheRegion'))
if not region.is_configured:
# NOTE(morganfainberg): this is how you tell if a region is configured.
# There is a request logged with dogpile.cache upstream to make this
# easier / less ugly.
config_dict = build_cache_config()
region.configure_from_config(config_dict,
'%s.' % CONF.cache.config_prefix)
if CONF.cache.debug_cache_backend:
region.wrap(DebugProxy)
# NOTE(morganfainberg): if the backend requests the use of a
# key_mangler, we should respect that key_mangler function. If a
# key_mangler is not defined by the backend, use the sha1_mangle_key
# mangler provided by dogpile.cache. This ensures we always use a fixed
# size cache-key.
if region.key_mangler is None:
region.key_mangler = util.sha1_mangle_key
for class_path in CONF.cache.proxies:
# NOTE(morganfainberg): if we have any proxy wrappers, we should
# ensure they are added to the cache region's backend. Since
# configure_from_config doesn't handle the wrap argument, we need
# to manually add the Proxies. For information on how the
# ProxyBackends work, see the dogpile.cache documents on
# "changing-backend-behavior"
cls = importutils.import_class(class_path)
LOG.debug("Adding cache-proxy '%s' to backend.", class_path)
region.wrap(cls)
return region
def is_neutron():
global _IS_NEUTRON
if _IS_NEUTRON is not None:
return _IS_NEUTRON
try:
# compatibility with Folsom/Grizzly configs
cls_name = CONF.network_api_class
if cls_name == 'nova.network.quantumv2.api.API':
cls_name = 'nova.network.neutronv2.api.API'
from nova.network.neutronv2 import api as neutron_api
_IS_NEUTRON = issubclass(importutils.import_class(cls_name),
neutron_api.API)
except ImportError:
_IS_NEUTRON = False
return _IS_NEUTRON