def TestOk(self):
'''
Here everything should go fine.
Parameters: None
Returns: None
Raises: ACSErrTypeCommonImpl.CouldntAccessComponentExImpl
'''
self.logger.logTrace("ClientErrorComponent.TestOk")
if self.foo == None:
raise ACSErrTypeCommonImpl.CouldntAccessComponentExImpl()
try:
self.foo.displayMessage()
except CORBA.SystemException, ex:
# Map......
acsPrintExcDebug()
displayMessageEx = ACSErrTypeCommonImpl.GenericErrorExImpl()
displayMessageEx.setErrorDesc(
"badMethod has thrown a CORBA exception")
displayMessageEx.log(self.logger)
def __narrowComponentReference(self, corba_obj, comp_class):
'''
Helper method which narrows the component reference to the correct type
for the developer.
Parameters:
corba_obj - reference to the component
comp_class - CORBA stub class for the component
Returns:
the narrowed component reference or None
Raises: Nothing
'''
#try to narrow the object...if this fails for any reason, just return
#the unnarrowed object
try:
narrowed_ref = corba_obj._narrow(comp_class)
return narrowed_ref
except Exception, e:
if corba_obj is None:
self.__logger.logCritical(
"Unable to obtain reference to component: " + str(e))
else:
self.__logger.logWarning("Unable to narrow component: " +
str(e))
acsPrintExcDebug()
return corba_obj
def __narrowComponentReference(self, corba_obj, comp_class):
'''
Helper method which narrows the component reference to the correct type
for the developer.
Parameters:
corba_obj - reference to the component
comp_class - CORBA stub class for the component
Returns:
the narrowed component reference or None
Raises: Nothing
'''
#try to narrow the object...if this fails for any reason, just return
#the unnarrowed object
try:
narrowed_ref = corba_obj._narrow(comp_class)
return narrowed_ref
except Exception, e:
if corba_obj is None:
self.__logger.logCritical("Unable to obtain reference to component: " + str(e))
else:
self.__logger.logWarning("Unable to narrow component: " + str(e))
acsPrintExcDebug()
return corba_obj
def TestReceiveRemoteCompletion(self):
'''
Example 2: Calls a method that returns a completion
If the completion contains an error, then:
Catches the exception,
prints it locally
sends it to the logging system
Parameters: None
Returns: Nothing
Raises: ACSErrTypeCommonImpl.CouldntAccessComponentExImpl
'''
self.logger.logTrace(
"ClientErrorComponent.TestReceiveRemoteCompletion")
if self.foo == None:
raise ACSErrTypeCommonImpl.CouldntAccessComponentExImpl()
try:
# OK Completion
self.logger.logInfo(
"Example 2a: Calls a method that returns an OK completion.")
comp = self.foo.completionFromException(0)
addComplHelperMethods(comp)
if comp.isErrorFree() == 1:
self.logger.logInfo("Completion Ok, without error trace")
else:
self.logger.logInfo("Completion with error trace (UNEXPECTED)")
comp.log(self.logger)
# ERROR completion with an error trace inside.
self.logger.logInfo(
"Example 2b: Calls a method that returns an Error completion, of depth 3."
)
comp2 = self.foo.completionFromException(3)
addComplHelperMethods(comp2)
if comp2.isErrorFree() == 1:
self.logger.logInfo(
"Completion Ok, without error trace (UNEXPECTED)")
else:
self.logger.logInfo("Completion with error trace")
comp2.log(self.logger)
except CORBA.SystemException, ex:
# Map......
acsPrintExcDebug()
displayMessageEx = ACSErrTypeCommonImpl.GenericErrorExImpl()
displayMessageEx.setErrorDesc(
"completionFromException has thrown an UNEXPECTED CORBA exception"
)
displayMessageEx.log(self.logger)
def TestReceiveRemoteCompletion(self):
'''
Example 2: Calls a method that returns a completion
If the completion contains an error, then:
Catches the exception,
prints it locally
sends it to the logging system
Parameters: None
Returns: Nothing
Raises: ACSErrTypeCommonImpl.CouldntAccessComponentExImpl
'''
self.logger.logTrace("ClientErrorComponent.TestReceiveRemoteCompletion")
if self.foo == None:
raise ACSErrTypeCommonImpl.CouldntAccessComponentExImpl()
try:
# OK Completion
self.logger.logInfo("Example 2a: Calls a method that returns an OK completion.")
comp = self.foo.completionFromException(0)
addComplHelperMethods(comp)
if comp.isErrorFree() == 1:
self.logger.logInfo("Completion Ok, without error trace")
else:
self.logger.logInfo("Completion with error trace (UNEXPECTED)")
comp.log(self.logger)
# ERROR completion with an error trace inside.
self.logger.logInfo("Example 2b: Calls a method that returns an Error completion, of depth 3.")
comp2 = self.foo.completionFromException(3)
addComplHelperMethods(comp2)
if comp2.isErrorFree() == 1:
self.logger.logInfo("Completion Ok, without error trace (UNEXPECTED)")
else:
self.logger.logInfo("Completion with error trace")
comp2.log(self.logger)
except CORBA.SystemException, ex:
# Map......
acsPrintExcDebug()
displayMessageEx = ACSErrTypeCommonImpl.GenericErrorExImpl()
displayMessageEx.setErrorDesc("completionFromException has thrown an UNEXPECTED CORBA exception")
displayMessageEx.log(self.logger)
def eventFunctionHelper(self, event, ifr_id):
'''
Returns an event instance or None based off the contents of
an _almaEvent or _almaEventReponse XML element (DOM).
'''
#here comes the fun part...it might be necessary to dynamically
#create the object now!
#get the code to be executed yielding a return value
try:
#if the following line of code throws an exception,
#it's not really a big deal. it just means that
#no function was defined within the XML element to
#generate the event instance
value = event.getValue().rstrip().lstrip().split('\n')
#this next block is wrapped in a separate try/except
#because it's possible that the end-user has problems
#in their function definition.
try:
_locals = {}
#attach all imports to the function definition
value = getCompLocalNSList(self.comp_name) + value
#make the code list a function in the _locals namespace
value = listToCodeObj(value, _locals)
#create the function
exec value in globals(), _locals
#execute the function as well to get the event instance
exec "joe = stringFunction([])" in globals(), _locals
event_instance = _locals['joe']
except Exception, e:
#the function definition given by the end-user was bad!
#warn them and schedule dynamic events instead
acsPrintExcDebug()
self.logger.logCritical(
"Something was wrong within the function definition for the '"
+ ifr_id + "' event type.")
self.logger.logInfo(
"Will try dynamically creating the event instead.")
#just rethrow e so the next block catches it
raise e
except:
event_instance = None
return event_instance
def eventFunctionHelper(self, event, ifr_id):
'''
Returns an event instance or None based off the contents of
an _almaEvent or _almaEventReponse XML element (DOM).
'''
#here comes the fun part...it might be necessary to dynamically
#create the object now!
#get the code to be executed yielding a return value
try:
#if the following line of code throws an exception,
#it's not really a big deal. it just means that
#no function was defined within the XML element to
#generate the event instance
value = event.getValue().rstrip().lstrip().split('\n')
#this next block is wrapped in a separate try/except
#because it's possible that the end-user has problems
#in their function definition.
try:
_locals = {}
#attach all imports to the function definition
value = getCompLocalNSList(self.comp_name) + value
#make the code list a function in the _locals namespace
value = listToCodeObj(value, _locals)
#create the function
exec value in globals(), _locals
#execute the function as well to get the event instance
exec "joe = stringFunction([])" in globals(), _locals
event_instance = _locals['joe']
except Exception, e:
#the function definition given by the end-user was bad!
#warn them and schedule dynamic events instead
acsPrintExcDebug()
self.logger.logCritical("Something was wrong within the function definition for the '" +
ifr_id +
"' event type.")
self.logger.logInfo("Will try dynamically creating the event instead.")
#just rethrow e so the next block catches it
raise e
except:
event_instance = None
return event_instance
def TestOk(self):
'''
Here everything should go fine.
Parameters: None
Returns: None
Raises: ACSErrTypeCommonImpl.CouldntAccessComponentExImpl
'''
self.logger.logTrace("ClientErrorComponent.TestOk")
if self.foo == None:
raise ACSErrTypeCommonImpl.CouldntAccessComponentExImpl()
try:
self.foo.displayMessage()
except CORBA.SystemException, ex:
# Map......
acsPrintExcDebug()
displayMessageEx = ACSErrTypeCommonImpl.GenericErrorExImpl()
displayMessageEx.setErrorDesc("badMethod has thrown a CORBA exception")
displayMessageEx.log(self.logger)
if self.foo == None:
raise ACSErrTypeCommonImpl.CouldntAccessComponentExImpl()
try:
self.foo.displayMessage()
except CORBA.SystemException, ex:
# Map......
acsPrintExcDebug()
displayMessageEx = ACSErrTypeCommonImpl.GenericErrorExImpl()
displayMessageEx.setErrorDesc(
"badMethod has thrown a CORBA exception")
displayMessageEx.log(self.logger)
except:
acsPrintExcDebug()
displayMessageEx = ACSErrTypeCommonImpl.GenericErrorExImpl()
displayMessageEx.setErrorDesc(
"badMethod has thrown an UNEXPECTED exception")
displayMessageEx.log(self.logger)
def TestReceiveRemoteException(self):
'''
Example 1: Calls a method that throws an exception
with a stack trace:
Catches the exception,
Adds context information
Sends it to the logging system
Parameters: None
def __importComponentStubs(self,
comp_name=None,
comp_type=None):
'''
Helper method tries to automatically import the CORBA stubs for a
developer. In the event that this fails, a critical message is logged.
Parameters:
comp_name - name of the component
comp_type - IFR type of the component
Notes: at least one of the parameters above has be a string
Returns: the component class CORBA stub
Raises: CannotGetComponentExImpl if type is unknown or import fails
'''
t_idl_type = comp_type
if (comp_name is not None) and (comp_type is None):
#Get a list of all components
components = self.availableComponents()
#search each Component
for component in components:
#for the one that has the given name
if component.name == comp_name:
#get that component's IR location
#e.g., "IDL:alma/PS/PowerSupply:1.0"
t_idl_type = component.type
break
if t_idl_type is None:
#getting this far means the component was not
#found
ex = CannotGetComponentExImpl()
ex.setReason("Component type unavailable!")
self.__logger.logWarning("Unable to import '" + str(comp_name) +
"' component's module: " + ex.getReason())
raise ex
try:
#extract the proper Python module from the type string.
#("alma", "PS", "PowerSupply")
temp = t_idl_type.split(':')[1].split('/')
#component's class name
comp_class = temp.pop() #"PowerSupply"
#components module name
comp_module = temp.pop() #"PS"
#Now import the real module
comp_module = __import__(comp_module,
globals(),
locals(),
[comp_class]) #import it
#get class reference
comp_class = comp_module.__dict__.get(comp_class)
except Exception, e:
#for some reason or another, the module could not be imported.
#this is not a total failure so it's just logged.
self.__logger.logWarning("Unable to import '" + str(comp_name) +
"' component's module: " + str(e))
acsPrintExcDebug()
raise CannotGetComponentExImpl(e)
def __importComponentStubs(self, comp_name=None, comp_type=None):
'''
Helper method tries to automatically import the CORBA stubs for a
developer. In the event that this fails, a critical message is logged.
Parameters:
comp_name - name of the component
comp_type - IFR type of the component
Notes: at least one of the parameters above has be a string
Returns: the component class CORBA stub
Raises: CannotGetComponentExImpl if type is unknown or import fails
'''
t_idl_type = comp_type
if (comp_name is not None) and (comp_type is None):
#Get a list of all components
components = self.availableComponents(comp_name)
#search each Component
for component in components:
#for the one that has the given name
if component.name == comp_name:
#get that component's IR location
#e.g., "IDL:alma/PS/PowerSupply:1.0"
t_idl_type = component.type
break
if t_idl_type is None:
#getting this far means the component was not
#found
ex = CannotGetComponentExImpl()
ex.setReason("Component type unavailable!")
self.__logger.logWarning("Unable to import '" + str(comp_name) +
"' component's module: " + ex.getReason())
raise ex
try:
#extract the proper Python module from the type string.
#("alma", "PS", "PowerSupply")
temp = t_idl_type.split(':')[1].split('/')
#component's class name
comp_class = temp.pop() #"PowerSupply"
#components module name
comp_module = temp.pop() #"PS"
#Now import the real module
comp_module = __import__(comp_module, globals(), locals(),
[comp_class]) #import it
#get class reference
comp_class = comp_module.__dict__.get(comp_class)
except Exception, e:
#for some reason or another, the module could not be imported.
#this is not a total failure so it's just logged.
self.__logger.logWarning("Unable to import '" + str(comp_name) +
"' component's module: " + str(e))
acsPrintExcDebug()
raise CannotGetComponentExImpl(e)
if depth >= 1:
try:
# We decrement the depth, because we are going to add one
# error here in any case.
self.__errorTrace(depth - 1)
except ACSErrTypeCommonImpl.GenericErrorExImpl, ex:
ex2 = ACSErrTypeCommonImpl.GenericErrorExImpl(exception=ex)
ex2.addData("ErrorDesc", "Generated multi level exception")
raise ex2
except:
#never expect this code to be executed but just in case
#there was some unknown problem generating the ACS-based
#exception
acsPrintExcDebug()
ex2 = ACSErrTypeCommonImpl.GenericErrorExImpl()
ex2.addData("ErrorDesc", "Got unexpected exception")
raise ex2
#We should get here only if a depth<=1 was requested.
ex = ACSErrTypeCommonImpl.GenericErrorExImpl()
ex.addData("ErrorDesc", "An error trace with depth lower or equal to 1 was requested.")
raise ex
#------------------------------------------------------------------------------
def exceptionFromCompletion(self, depth):
'''
Implementation of IDL method:
ACSErr::Completion exceptionFromCompletion(in short depth);
For details on what this method does, please see the IDL Doxygen
