Source code for pipeLionServer.services.abstractService

from pipeLionServer.core.error import PipeLionServerException
from pipeLionServer.core.error import PipeLionServerWarning

class AbstractService(object):
	""" the abstractService class defines in which way a Service will search for requests
		to define a new Service inherit this service object and name all your request-functions like:
		
			1 | def reguest_YOURREQUESTNAME(self, YOURARGS):
			2 | 		...
		
	"""
	
	## holds the dataBase instance
	dB = None
	
	def __init__(self, dataBase):
		""" constructor
		"""
		self.dB = dataBase
	
	def makeRequest(self, request, **kwargs):
		"""  method will call the instance method request_REQUEST(kwargs)
			in case it cannot find that function it will raise a PipeLionServerException
			
			:param request: name of the request function 
			:type request: string
			:param kwargs: dictionary of arguments, which should be inputted to the instance-method
			:type kwargs:  dictionary
			
			:returns: returnValue of request_REQUEST(kwargs) or PipeLionServerException
			:rtype: variant object
		"""
		if hasattr(self, "request_%s"%request):
			try:
				returnValue = eval('self.request_%s(**%s)'%(request, kwargs))
			except Exception as errorMsg:
				returnValue = PipeLionServerException(
					'the request-call %s of service %s caused the following error:' % (
						request, 
						self.__class__.__name__
					),
					errorMsg
				)
			return returnValue
		else:
			return PipeLionServerException('the given request is not part of %s!'%self.__class__.__name__)