def _create_session(self):
"""Creates a session with the VC host."""
delay = 1
while True:
try:
# Login and setup the session with the 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:
try:
self.vim.TerminateSession(
self.vim.get_service_content().sessionManager,
sessionId=[self._session.key])
except Exception:
# 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("TerminateSession failed", exc_info=True)
self._session = session
return
except Exception:
LOG.critical(_LC("Unable to connect to server at %(server)s, "
"sleeping for %(seconds)s seconds"), {
'server': self._host_ip,
'seconds': delay
},
exc_info=True)
# exc_info logs the exception with the message
time.sleep(delay)
delay = min(2 * delay, 60)
def _create_session(self):
"""Creates a session with the VC/ESX host."""
delay = 1
while True:
try:
# Login and setup the session with the 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:
try:
self.vim.TerminateSession(
self.vim.get_service_content().sessionManager,
sessionId=[self._session.key])
except Exception:
# 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("TerminateSession failed", exc_info=True)
self._session = session
return
except Exception:
LOG.critical(_LC("Unable to connect to server at %(server)s, "
"sleeping for %(seconds)s seconds"),
{'server': self._host_ip, 'seconds': delay},
exc_info=True)
# exc_info logs the exception with the message
time.sleep(delay)
delay = min(2 * delay, 60)
def __init__(self, init_only=None, v3mode=False):
# TODO(cyeoh): bp v3-api-extension-framework. Currently load
# all extensions but eventually should be able to exclude
# based on a config file
# TODO(oomichi): We can remove v3mode argument after moving all v3 APIs
# to v2.1.
def _check_load_extension(ext):
if (self.init_only is None or ext.obj.alias in
self.init_only) and isinstance(ext.obj,
extensions.V3APIExtensionBase):
# Check whitelist is either empty or if not then the extension
# is in the whitelist
if (not CONF.osapi_v3.extensions_whitelist or
ext.obj.alias in CONF.osapi_v3.extensions_whitelist):
# Check the extension is not in the blacklist
if ext.obj.alias not in CONF.osapi_v3.extensions_blacklist:
return self._register_extension(ext)
else:
LOG.warning(_LW("Not loading %s because it is "
"in the blacklist"), ext.obj.alias)
return False
else:
LOG.warning(
_LW("Not loading %s because it is not in the "
"whitelist"), ext.obj.alias)
return False
else:
return False
if not CONF.osapi_v3.enabled:
LOG.info(_LI("V3 API has been disabled by configuration"))
return
self.init_only = init_only
LOG.debug("v3 API Extension Blacklist: %s",
CONF.osapi_v3.extensions_blacklist)
LOG.debug("v3 API Extension Whitelist: %s",
CONF.osapi_v3.extensions_whitelist)
in_blacklist_and_whitelist = set(
CONF.osapi_v3.extensions_whitelist).intersection(
CONF.osapi_v3.extensions_blacklist)
if len(in_blacklist_and_whitelist) != 0:
LOG.warning(_LW("Extensions in both blacklist and whitelist: %s"),
list(in_blacklist_and_whitelist))
self.api_extension_manager = stevedore.enabled.EnabledExtensionManager(
namespace=self.api_extension_namespace(),
check_func=_check_load_extension,
invoke_on_load=True,
invoke_kwds={"extension_info": self.loaded_extension_info})
if v3mode:
mapper = PlainMapper()
else:
mapper = ProjectMapper()
self.resources = {}
# NOTE(cyeoh) Core API support is rewritten as extensions
# but conceptually still have core
if list(self.api_extension_manager):
# NOTE(cyeoh): Stevedore raises an exception if there are
# no plugins detected. I wonder if this is a bug.
self._register_resources_check_inherits(mapper)
self.api_extension_manager.map(self._register_controllers)
missing_core_extensions = self.get_missing_core_extensions(
self.loaded_extension_info.get_extensions().keys())
if not self.init_only and missing_core_extensions:
LOG.critical(_LC("Missing core API extensions: %s"),
missing_core_extensions)
raise exception.CoreAPIMissing(
missing_apis=missing_core_extensions)
super(APIRouterV21, self).__init__(mapper)
def __init__(self, init_only=None):
# TODO(cyeoh): bp v3-api-extension-framework. Currently load
# all extensions but eventually should be able to exclude
# based on a config file
def _check_load_extension(ext):
if (self.init_only is None
or ext.obj.alias in self.init_only) and isinstance(
ext.obj, extensions.V21APIExtensionBase):
# Check whitelist is either empty or if not then the extension
# is in the whitelist
if (not CONF.osapi_v21.extensions_whitelist or ext.obj.alias
in CONF.osapi_v21.extensions_whitelist):
# Check the extension is not in the blacklist
blacklist = CONF.osapi_v21.extensions_blacklist
if ext.obj.alias not in blacklist:
return self._register_extension(ext)
return False
if (CONF.osapi_v21.extensions_blacklist
or CONF.osapi_v21.extensions_whitelist):
LOG.warning(
_LW('In the M release you must run all of the API. '
'The concept of API extensions will be removed from '
'the codebase to ensure there is a single Compute API.'))
self.init_only = init_only
LOG.debug("v21 API Extension Blacklist: %s",
CONF.osapi_v21.extensions_blacklist)
LOG.debug("v21 API Extension Whitelist: %s",
CONF.osapi_v21.extensions_whitelist)
in_blacklist_and_whitelist = set(
CONF.osapi_v21.extensions_whitelist).intersection(
CONF.osapi_v21.extensions_blacklist)
if len(in_blacklist_and_whitelist) != 0:
LOG.warning(_LW("Extensions in both blacklist and whitelist: %s"),
list(in_blacklist_and_whitelist))
self.api_extension_manager = stevedore.enabled.EnabledExtensionManager(
namespace=self.api_extension_namespace(),
check_func=_check_load_extension,
invoke_on_load=True,
invoke_kwds={"extension_info": self.loaded_extension_info})
mapper = ProjectMapper()
self.resources = {}
# NOTE(cyeoh) Core API support is rewritten as extensions
# but conceptually still have core
if list(self.api_extension_manager):
# NOTE(cyeoh): Stevedore raises an exception if there are
# no plugins detected. I wonder if this is a bug.
self._register_resources_check_inherits(mapper)
self.api_extension_manager.map(self._register_controllers)
missing_core_extensions = self.get_missing_core_extensions(
self.loaded_extension_info.get_extensions().keys())
if not self.init_only and missing_core_extensions:
LOG.critical(_LC("Missing core API extensions: %s"),
missing_core_extensions)
raise exception.CoreAPIMissing(
missing_apis=missing_core_extensions)
LOG.info(_LI("Loaded extensions: %s"),
sorted(self.loaded_extension_info.get_extensions().keys()))
super(APIRouterV21, self).__init__(mapper)
def _call_method(self, module, method, *args, **kwargs):
"""Calls a method within the module specified with
args provided.
"""
args = list(args)
retry_count = 0
while True:
exc_info = False
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 as 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_info = sys.exc_info()
if error_util.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. We thus check if the session is
# active
if self._session_is_active():
return []
LOG.warning(_("Session %s is inactive!"),
self._session.key)
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.
# Raise specific exceptions here if possible
if excep.fault_list:
fault = excep.fault_list[0]
raise error_util.get_fault_class(fault)(str(excep))
break
except error_util.SessionOverLoadException:
# For exceptions which may come because of session overload,
# we retry
exc_info = sys.exc_info()
except error_util.SessionConnectionException:
# For exceptions with connections we create the session
exc_info = sys.exc_info()
self._create_session()
except Exception:
# 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_info = sys.exc_info()
break
LOG.debug("_call_method(session=%(key)s) failed. "
"Module: %(module)s. "
"Method: %(method)s. "
"args: %(args)s. "
"kwargs: %(kwargs)s. "
"Iteration: %(n)s. ",
{'key': self._session.key,
'module': module,
'method': method,
'args': args,
'kwargs': kwargs,
'n': retry_count},
exc_info=exc_info)
# 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(_LC("In vmwareapi: _call_method (session=%s)"),
self._session.key, exc_info=True)
raise
def __init__(self, init_only=None, v3mode=False):
def _check_load_extension(ext):
if (self.init_only is None or ext.obj.alias in
self.init_only) and isinstance(ext.obj,
extensions.V21APIExtensionBase):
# Check whitelist is either empty or if not then the extension
# is in the whitelist
if (not CONF.osapi_v21.extensions_whitelist or
ext.obj.alias in CONF.osapi_v21.extensions_whitelist):
# Check the extension is not in the blacklist
blacklist = CONF.osapi_v21.extensions_blacklist
if ext.obj.alias not in blacklist:
return self._register_extension(ext)
return False
### CONF.osapi_v21.enabled: True
if not CONF.osapi_v21.enabled:
LOG.info(_LI("V2.1 API has been disabled by configuration"))
LOG.warning(_LW("In the M release you must run the v2.1 API."))
return
### CONF.osapi_v21.extensions_blacklist: []
### CONF.osapi_v21.extensions_whitelist: []
if (CONF.osapi_v21.extensions_blacklist or
CONF.osapi_v21.extensions_whitelist):
LOG.warning(
_LW('In the M release you must run all of the API. '
'The concept of API extensions will be removed from '
'the codebase to ensure there is a single Compute API.'))
### self.init_only: None
self.init_only = init_only
LOG.debug("v21 API Extension Blacklist: %s",
CONF.osapi_v21.extensions_blacklist)
LOG.debug("v21 API Extension Whitelist: %s",
CONF.osapi_v21.extensions_whitelist)
### CONF.osapi_v21.extensions_whitelist: []
### CONF.osapi_v21.extensions_blacklist: []
### 获取上述两个list的交集
in_blacklist_and_whitelist = set(
CONF.osapi_v21.extensions_whitelist).intersection(
CONF.osapi_v21.extensions_blacklist)
if len(in_blacklist_and_whitelist) != 0:
LOG.warning(_LW("Extensions in both blacklist and whitelist: %s"),
list(in_blacklist_and_whitelist))
### namespace: 'nova.api.v21.extensions'
### check_fun: <function _check_load_extension at 0x5907f50>
### self.loaded_extension_info: <nova.api.openstack.compute.extension_info.LoadedExtensionInfo object at 0x55b0150>
self.api_extension_manager = stevedore.enabled.EnabledExtensionManager(
namespace=self.api_extension_namespace(),
check_func=_check_load_extension,
invoke_on_load=True,
invoke_kwds={"extension_info": self.loaded_extension_info})
### v3mode: False
if v3mode:
mapper = PlainMapper()
else:
mapper = ProjectMapper()
self.resources = {}
### self.api_extension_manager: <stevedore.enabled.EnabledExtensionManager object at 0x57a51d0>
### mapper: <nova.api.openstack.ProjectMapper object at 0x57a5210>
if list(self.api_extension_manager):
self._register_resources_check_inherits(mapper)
self.api_extension_manager.map(self._register_controllers)
missing_core_extensions = self.get_missing_core_extensions(
self.loaded_extension_info.get_extensions().keys())
if not self.init_only and missing_core_extensions:
LOG.critical(_LC("Missing core API extensions: %s"),
missing_core_extensions)
raise exception.CoreAPIMissing(
missing_apis=missing_core_extensions)
LOG.info(_LI("Loaded extensions: %s"),
sorted(self.loaded_extension_info.get_extensions().keys()))
super(APIRouterV21, self).__init__(mapper)
def _call_method(self, module, method, *args, **kwargs):
"""Calls a method within the module specified with
args provided.
"""
args = list(args)
retry_count = 0
while True:
exc_info = False
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 as 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_info = sys.exc_info()
if error_util.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. We thus check if the session is
# active
if self._session_is_active():
return []
LOG.warning(_("Session %s is inactive!"),
self._session.key)
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.
# Raise specific exceptions here if possible
if excep.fault_list:
fault = excep.fault_list[0]
msg_excep = six.text_type(excep)
raise error_util.get_fault_class(fault)(msg_excep)
break
except error_util.SessionOverLoadException:
# For exceptions which may come because of session overload,
# we retry
exc_info = sys.exc_info()
except error_util.SessionConnectionException:
# For exceptions with connections we create the session
exc_info = sys.exc_info()
self._create_session()
except Exception:
# 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_info = sys.exc_info()
break
LOG.debug("_call_method(session=%(key)s) failed. "
"Module: %(module)s. "
"Method: %(method)s. "
"args: %(args)s. "
"kwargs: %(kwargs)s. "
"Iteration: %(n)s. ",
{'key': self._session.key,
'module': module,
'method': method,
'args': args,
'kwargs': kwargs,
'n': retry_count},
exc_info=exc_info)
# 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(_LC("In vmwareapi: _call_method (session=%s)"),
self._session.key, exc_info=True)
raise
def __init__(self, init_only=None):
# TODO(cyeoh): bp v3-api-extension-framework. Currently load
# all extensions but eventually should be able to exclude
# based on a config file
def _check_load_extension(ext):
if (self.init_only is None or ext.obj.alias in
self.init_only) and isinstance(ext.obj,
extensions.V21APIExtensionBase):
# Check whitelist is either empty or if not then the extension
# is in the whitelist
if (not CONF.osapi_v21.extensions_whitelist or
ext.obj.alias in CONF.osapi_v21.extensions_whitelist):
# Check the extension is not in the blacklist
blacklist = CONF.osapi_v21.extensions_blacklist
if ext.obj.alias not in blacklist:
return self._register_extension(ext)
return False
if (CONF.osapi_v21.extensions_blacklist or
CONF.osapi_v21.extensions_whitelist):
LOG.warning(
_LW('In the M release you must run all of the API. '
'The concept of API extensions will be removed from '
'the codebase to ensure there is a single Compute API.'))
self.init_only = init_only
LOG.debug("v21 API Extension Blacklist: %s",
CONF.osapi_v21.extensions_blacklist)
LOG.debug("v21 API Extension Whitelist: %s",
CONF.osapi_v21.extensions_whitelist)
in_blacklist_and_whitelist = set(
CONF.osapi_v21.extensions_whitelist).intersection(
CONF.osapi_v21.extensions_blacklist)
if len(in_blacklist_and_whitelist) != 0:
LOG.warning(_LW("Extensions in both blacklist and whitelist: %s"),
list(in_blacklist_and_whitelist))
self.api_extension_manager = stevedore.enabled.EnabledExtensionManager(
namespace=self.api_extension_namespace(),
check_func=_check_load_extension,
invoke_on_load=True,
invoke_kwds={"extension_info": self.loaded_extension_info})
mapper = ProjectMapper()
self.resources = {}
# NOTE(cyeoh) Core API support is rewritten as extensions
# but conceptually still have core
if list(self.api_extension_manager):
# NOTE(cyeoh): Stevedore raises an exception if there are
# no plugins detected. I wonder if this is a bug.
self._register_resources_check_inherits(mapper)
self.api_extension_manager.map(self._register_controllers)
missing_core_extensions = self.get_missing_core_extensions(
self.loaded_extension_info.get_extensions().keys())
if not self.init_only and missing_core_extensions:
LOG.critical(_LC("Missing core API extensions: %s"),
missing_core_extensions)
raise exception.CoreAPIMissing(
missing_apis=missing_core_extensions)
LOG.info(_LI("Loaded extensions: %s"),
sorted(self.loaded_extension_info.get_extensions().keys()))
super(APIRouterV21, self).__init__(mapper)