def handle_call(self, call):
if (call.type != 'procedure_call'):
raise SCSCPProtocolError('Bad message from client: %s.' % call.type, om=call.om())
try:
head = call.data.elem.name
self.log.debug('Requested head: %s...' % head)
if call.data.elem.cd == 'scscp2' and head in CD_SCSCP2:
res = getattr(self, head)(call.data)
elif call.data.elem.cd == 'arith1' and head in CD_ARITH1:
args = [conv.to_python(a) for a in call.data.arguments]
res = conv.to_openmath(CD_ARITH1[head](*args))
else:
self.log.debug('...head unknown.')
return self.scscp.terminated(call.id, om.OMError(
om.OMSymbol('unhandled_symbol', cd='error'), [call.data.elem]))
strlog = str(res)
self.log.debug('...sending result: %s' % (strlog[:20] + (len(strlog) > 20 and '...')))
return self.scscp.completed(call.id, res)
except (AttributeError, IndexError, TypeError):
self.log.debug('...client protocol error.')
return self.scscp.terminated(call.id, om.OMError(
om.OMSymbol('unexpected_symbol', cd='error'), [call.data]))
except Exception as e:
self.log.exception('Unhandled exception:')
return self.scscp.terminated(call.id, 'system_specific',
'Unhandled exception %s.' % str(e))
def handle_call(self, call):
if (call.type != 'procedure_call'):
raise SCSCPProtocolError('Bad message from client: %s.' % call.type, om=call.om())
try:
head = call.data.elem.name
self.log.debug('Requested head: %s...' % head)
if call.data.elem.cd == 'scscp2' and head in CD_SCSCP2:
res = getattr(self, head)(call.data)
elif call.data.elem.cd == 'singular' and head in CD_SINGULAR:
#args = [conv.to_python(a) for a in call.data.arguments]
args = call.data.arguments
handler = get_handler(head)
name = makename()
handler(name, args)
res = retrieve(name)
else:
self.log.debug('...head unknown.')
return self.scscp.terminated(call.id, om.OMError(
om.OMSymbol('unhandled_symbol', cd='error'), [call.data.elem]))
strlog = str(res)
print(colored(strlog, "green"))
self.log.debug('...sending result: %s' % (strlog[:20] + (len(strlog) > 20 and '...')))
return self.scscp.completed(call.id, res)
except (AttributeError, IndexError, TypeError) as e:
traceback.print_exc()
self.log.debug('...client protocol error.')
return self.scscp.terminated(call.id, om.OMError(
om.OMSymbol('unexpected_symbol', cd='error'), [call.data]))
except Exception as e:
self.log.exception('Unhandled exception:')
return self.scscp.terminated(call.id, 'system_specific',
'Unhandled exception %s.' % str(e))
def __handle_call(self, call):
""" Safely handles a call """
if (call.type != 'procedure_call'):
raise SCSCPProtocolError('Bad message from client: %s.' %
call.type,
om=call.om())
try:
head = call.data.elem.name
self.log.debug('Requested head: %s...' % head)
# for the methods in scscp2, use the class methods
if call.data.elem.cd == 'scscp2':
if not head in CD_SCSCP2:
raise SCSCPUnknownHead
res = getattr(self, head)(call.data)
# else, handle the call internally
else:
res = self.handle_call(call, head)
strlog = str(res)
self.log.debug('...sending result: %s' %
(strlog[:20] + ('...' if len(strlog) > 20 else '')))
# if we already constructed a procedure message
# else just return it as is
if isinstance(res, SCSCPProcedureMessage):
return res
# else,
else:
return self.scscp.completed(call.id, res)
# User-thrown execption: I don't know this head
except SCSCPUnknownHead:
self.log.debug('...head unknown.')
return self.scscp.terminated(
call.id,
om.OMError(om.OMSymbol('unhandled_symbol', cd='error'),
[call.data.elem]))
# we tried to look up something, but it wasn't given by the client
except (AttributeError, IndexError, TypeError):
self.log.debug('...client protocol error.')
return self.scscp.terminated(
call.id,
om.OMError(om.OMSymbol('unexpected_symbol', cd='error'),
[call.data]))
# anything else
except Exception as e:
self.log.exception('Unhandled exception:')
return self.scscp.terminated(call.id, 'system_specific',
'Unhandled exception %s.' % str(e))
def terminated(cls, id, error, msg=None, **info):
if not isinstance(error, om.OMError):
if cls.errors[error] and msg is None:
raise RuntimeError('Must give an error message')
error = om.OMError(om.OMSymbol('error_' + error, cd='scscp1'),
[om.OMString(msg)])
return cls._w_info('procedure_terminated', id, error, **info)
def no_such_transient_cd(cd):
return om.OMError(om.OMSymbol('no_such_transient_cd', cd='scscp2'),
[om.OMString(cd)])
