def test_can_host_entity_unlimited_busy_output(self):
output_queue = Queue(1)
output_queue.nextArrival(1)
queueObj = Queue()
queueObj.addOutput(output_queue)
queueObj.nextArrival(0)
self.assertEqual(queueObj.getQueueLength(), 1,
"The queue mustn't be empty")
self.assertEqual(queueObj.getMaxQueueLength(), 1,
"The queue mustn't be empty")
class Core:
# CLASS FUNCTIONS
def __init__(self, parameters=None):
if parameters is None:
self.parameters = Parameters()
else:
self.parameters = parameters
num_sources = Constants.DEFAULT_SOURCES
num_processors = self.parameters.num_processors
# Attributes initialization
self.processors = []
self.sources = []
self.eventsList = PriorityQueue(0) # maxsize = 0 (infinite)
self.previousTime = Constants.SIMULATION_INITIAL_TIME
self.currentTime = Constants.SIMULATION_INITIAL_TIME
self.idleProcessors = 0
self.serviceProcessors = 0
self.entitiesSystem = 0
self.service_per_shift = []
self.service_per_total = []
self.shift_durations = self.parameters.getParameters()[1]
self.shift_next_time = self.shift_durations[0]
self.shift_next_index = 1
# Instance creation
self.queue = Queue(Constants.SLOTS_BUFFER)
self.parking = Queue(Constants.SLOTS_QUEUE)
self.random = Random()
for _ in range(0, num_processors):
self.processors.append(Processor(self))
for _ in range(0, num_sources):
self.sources.append(Source(self))
# Dependency injection
for source in self.sources:
source.addOutput(self.queue) # source -> queue
self.queue.addOutput(self.parking) # queue -> parking
self.parking.addInput(self.queue) # parking <- queue
for processor in self.processors:
self.parking.addOutput(processor) # parking -> processor
processor.addInput(self.parking) # processor <- parking
self.output_file = None
self.numberOfIdleProcessors = num_processors
def increaseEntitiesSystem(self):
self.entitiesSystem += 1
def decreaseEntitiesSystem(self):
self.entitiesSystem -= 1
def startSimulation(self):
"""Implemented by all modules"""
startEvent = Event(self, Constants.START_SIMULATION, self.currentTime,
self.currentTime)
self.logEvent(startEvent)
for source in self.sources:
source.startSimulation()
def endSimulation(self):
"""Implemented by all modules"""
endEvent = Event(
self, # eventCreator
Constants.END_SIMULATION, # eventName
self.currentTime, # eventScheduled
self.currentTime # eventTime
)
self.logEvent(endEvent)
self.updateState(endEvent)
def executeEvent(self, currentEvent):
"""Implemented by all event creator modules"""
if currentEvent.eventName == Constants.START_SIMULATION:
self.startSimulation()
def run(self):
self.logHeaders() # creates output file with flag w+
with open(self.parameters.output_file + '.csv',
"a+") as self.output_file:
self.startSimulation()
while not self.eventsList.empty():
currentEvent = self.eventsList.get()
self.updateState(currentEvent)
self.logEvent(currentEvent)
currentEvent.executeEvent()
self.endSimulation()
self.stats()
def addEvent(self, addedEvent):
self.eventsList.put(addedEvent, addedEvent.eventTime)
def getCurrentTime(self):
return self.currentTime
def updateState(self, event):
self.previousTime = self.currentTime
self.currentTime = event.eventTime
timeStep = self.currentTime - self.previousTime
self.numberOfIdleProcessors = 0
for processor in self.processors:
if processor.isIdle():
self.idleProcessors += timeStep
self.numberOfIdleProcessors += 1
else:
self.serviceProcessors += timeStep
if self.currentTime > self.shift_next_time * 3600:
if self.shift_next_index < len(self.shift_durations):
self.shift_next_time += self.shift_durations[
self.shift_next_index]
self.shift_next_index += 1
if not self.service_per_shift: # first shift - empty list; if == 0
self.service_per_shift.append(self.serviceProcessors)
else:
self.service_per_shift.append(self.serviceProcessors -
self.service_per_total[-1])
self.service_per_total.append(self.serviceProcessors)
if event.eventName == Constants.END_SIMULATION and len(
self.service_per_shift) < len(self.shift_durations):
# print('END_SIMULATION')
self.service_per_shift.append(self.serviceProcessors -
self.service_per_total[-1])
def getCurrentShift(self):
return self.parameters.getCurrentShift(self.currentTime)
def logHeaders(self):
s = 'Current_Time,'
s += 'Event_Name,'
s += 'Event_Scheduled,'
s += 'Event-Time,'
s += 'Idle_Processors,'
s += 'Service_Processors,'
s += 'Number_Idle_Processors,'
s += 'Buffer_Length,'
s += 'Queue_Length,'
s += 'Entities_System,'
s += 'Shift'
with open(self.parameters.output_file + '.csv', "w+") as output_file:
output_file.write(s + '\n')
def logEvent(self, currentEvent):
s = str(self.currentTime) + ','
s += currentEvent.eventName + ','
s += str(currentEvent.eventScheduled) + ','
s += str(currentEvent.eventTime) + ','
s += str(self.idleProcessors) + ','
s += str(self.serviceProcessors) + ','
s += str(self.numberOfIdleProcessors) + ','
s += str(self.queue.getQueueLength()) + ','
s += str(self.parking.getQueueLength()) + ','
s += str(self.entitiesSystem) + ','
s += str(self.parameters.getCurrentShift(currentEvent.eventScheduled))
self.output_file.write(s + '\n')
def stats(self):
s = 'Max_Queue_Length'
r = str(self.parking.getMaxQueueLength())
s += ',Processors_Capacity_Used'
r += ',' + str(
round(
100 * self.serviceProcessors /
(self.parameters.num_processors *
Constants.SIMULATION_DURATION), 2)) # in %
shift_type, shift_duration = self.parameters.getParameters()
for idx in range(len(shift_type)):
s += ',Shift_Type'
r += ',' + shift_type[idx]
s += ',Shift_Duration'
r += ',' + str(shift_duration[idx])
s += ',Shift_Capacity_Usage'
r += ',' + str(
round(
100 * self.service_per_shift[idx] /
(self.parameters.num_processors *
self.shift_durations[idx] * 3600), 2))
with open(self.parameters.output_file + '.stats.csv',
"w+") as output_file:
output_file.write(s + '\n')
output_file.write(r + '\n')
