class QueryHandler(object):
'''
classdocs
'''
jsonSuccessTemplate = """{
'query_id' : '%s',
'timeout' : %d,
'details' : %r
}"""
def __init__(self, content):
'''
Constructor
'''
self.validator = QueryValidator(content)
def process(self):
errors = self.validator.validateQuery()
if errors is not None:
logger.error("Problems while validating the query...")
return errors
else:
try :
logger.debug("Build query json")
self.queryId = str(uuid.uuid4())
queryJson = self._buildQuery()
logger.debug("Build executable and params")
inputParams = self._buildInputParams()
queryJson['input_params'] = inputParams
logger.debug("Insert query in the DB")
self._storeInTheDB(queryJson)
# This must be executed in thread!!
t = threading.Thread(target=self._executeQueryInParallel, args=(inputParams,))
t.start()
####
# Return
successMessageStr = self.jsonSuccessTemplate%(self.queryId,
self.validator.timeout,
self.validator.executable)
logger.debug("Message to send to the client:" + successMessageStr)
return ast.literal_eval(successMessageStr)
except Exception, e:
message = "Problems while processing the query..."
logger.exception(message + str(e))
return Messages.error(message, str(e));
def testValidatorInvalidJson(self):
content = self.invalidJson
v = QueryValidator(content)
message = v.validateQuery()
self.assertDictContainsSubset({'success' : 'False'}, message)
def testValidatorSuccess(self):
content = self.validJson
v = QueryValidator(content)
message = v.validateQuery()
self.assertEqual(message, None)