def main_loop(self):
client = Client()
t = ServerThread(client)
t.start()
while True:
data = raw_input(">>> ")
if data == "exit":
break
else:
if data == "exit lego":
data = "exit"
client.send(data)
client.close()
t.exit_server = True
t.join()
def main_loop(self):
client = Client()
t = ServerThread(client)
t.start()
while True:
data = raw_input('>>> ')
if data == 'exit':
break
else:
if data == 'exit lego':
data = 'exit'
client.send(data)
client.close()
t.exit_server = True
t.join()
hour = time_info.hour
target_temp = 20 if day <= 5 and 7 <= hour <= 22 else 15
error = target_temp - tr
error_derivative = (error - last_error) / time_delta
error_integral += error * time_delta
fcob = min(max_flow,
P * error + I * error_integral + D * error_derivative)
d_tpco = (fcob * dzeta * (tzco - tpco) - kh * (tpco - tr)) / (mh * ch)
d_tr = (kh * (tpco - tr) - kext * (tr - to)) / (mb * cb)
tr += d_tr * time_delta
tpco += d_tpco * time_delta
lock.acquire()
try:
data['Tr'] = tr
data['Tpcob'] = tpco
finally:
lock.release()
time_vector.append(t - t_0)
tpco_vector.append(tpco)
tr_vector.append(tr)
sleep(10)
# Ctrl-C stops the loop and plots, this will probably go away later but for now it's useful to see that the
# calculations look sensible and don't run away into infinity
except (KeyboardInterrupt, NTPException):
plt.plot(time_vector, tpco_vector)
plt.show()
plt.plot(time_vector, tr_vector)
plt.show()
server.join()
break
class ServerThreadManager(Thread):
'''
A server thread manager functionality
It periodically verifies the server thread's state, in the case of
blocking it restarts the thread.
'''
def __init__(self,
threadID,
server_address,
broadcast_ip,
host_ip,
negotiation_port,
subscription_port,
car_subscription_port,
car_communication_port,
max_wait_time_for_server,
logFile=None):
'''
Decide which simulated GPS starts the server.
Arguments:
threadID {int} -- the thread id
server_address {str} -- the server address
broadcast_ip {str} -- broadcast IP address
host_ip {str} -- localhost IP address
negotiation_port {int} -- negotiation port
subscription_port {int} -- subscription port used to
transmite the data from the
detectors to the server
car_subscription_port {int} -- port used for the vechile
client to subscribe on the
server
car_communication_port {int} -- port used for trasmiting the
data from the server to the
clients
max_wait_time_for_server {float} -- maximum waiting time to
receive a beacon from
the server
'''
Thread.__init__(self)
self.name = 'ServerManager'
self.threadID = threadID
self.logFile = logFile
self.server_address = server_address
self.beacon_thread = None
self.server_thread = None
self.forwarding_thread = None
self.carSubscriber_thread = None
self.carMap = None
self.broadcast_ip = broadcast_ip
self.host_ip = host_ip
self.negotiation_port = negotiation_port
self.subscription_port = subscription_port
self.car_subscription_port = car_subscription_port
self.car_communication_port = car_communication_port
self.max_wait_time_for_server = max_wait_time_for_server
self.runningThread = True
#================================ NEGOTIATION SERVER =====================
def NegotiateServer(self):
'''
Function that decides which simulated GPS starts the server.
'''
print("Negotiation start!")
s = socket.socket(family=socket.AF_INET, type=socket.SOCK_DGRAM)
s.bind(('', self.negotiation_port))
s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
randTime = 10 * self.max_wait_time_for_server * random.random()
wait_time = 2 + math.floor(randTime) / 100
print("Waiting " + str(wait_time) + " seconds for server")
t = time.time()
server = []
try:
# listen for server broadcast
s.settimeout(wait_time)
data, SERVER_IP = s.recvfrom(1500, 0)
# server beacon received
s.close()
print("Server started on " + str((SERVER_IP[0])))
# store server info
self.server_address.ip = str(SERVER_IP[0])
self.server_address.port = self.subscription_port
except KeyboardInterrupt:
print('KeyboardInterrupt')
except Exception as e:
print("No response, starting server here", e)
s.sendto(bytes(self.host_ip, "UTF-8"),
(self.broadcast_ip, self.negotiation_port))
s.close()
self.stopAllThread()
self.server_address.ip = self.host_ip
self.server_address.port = self.subscription_port
if (self.logFile != None):
log_message = 'NegotiateServer- server address %s' % str(
self.server_address)
self.logFile.saveWithDate(log_message)
self.carMap = Data4CarMap(256)
# thread responsible for broadcasting itself as the server
self.beacon_thread = ServerBeaconThread(
threadID=self.threadID + 1,
host_ip=self.host_ip,
broadcast_ip=self.broadcast_ip,
negotiation_port=self.negotiation_port,
sleepDuration=1.9,
logFile=self.logFile)
self.beacon_thread.start()
# thread responsible for collecting GPS data from clients
self.server_thread = ServerThread(
threadID=self.threadID + 2,
address=self.server_address.asTuple(),
carMap=self.carMap,
logFile=self.logFile)
self.server_thread.start()
# thread responsible for sending GPS data to each registered vehicle
self.forwarding_thread = Forward2CarThread(
threadID=self.threadID + 3,
car_communication_port=self.car_communication_port,
carMap=self.carMap,
period=1.0,
logFile=self.logFile)
self.forwarding_thread.start()
# thread responsible for registering vehicles
self.carSubscriber_thread = Listen4CarSubscriberThread(
threadID=self.threadID + 4,
host_ip=self.host_ip,
car_subscription_port=self.car_subscription_port,
carMap=self.carMap,
logFile=self.logFile)
self.carSubscriber_thread.start()
print(str(time.time() - t) + " seconds elapsed")
#================================ STOP ====================================
def stopAllThread(self):
'''
Function responsible for stoppinf all threads
'''
#beacon thread
if self.beacon_thread != None:
self.beacon_thread.stop()
if (self.beacon_thread.is_alive()):
self.beacon_thread.join()
self.beacon_thread = None
print("beacon_thread stoped!")
#server thread
if self.server_thread != None:
self.server_thread.stop()
if (self.server_thread.is_alive()):
self.server_thread.join()
self.server_thread = None
print("server_thread stoped!")
#forwarding thread
if self.forwarding_thread != None:
self.forwarding_thread.stop()
if (self.forwarding_thread.is_alive()):
self.forwarding_thread.join()
self.forwarding_thread = None
print("forwarding_thread stoped!")
#car subscriber thread
if self.carSubscriber_thread != None:
self.carSubscriber_thread.stop()
if (self.carSubscriber_thread.is_alive()):
self.carSubscriber_thread.join()
self.carSubscriber_thread = None
print("carSubscriber_thread stoped!")
#================================ RUN THREADS =============================
def run(self):
while (self.runningThread):
if (self.beacon_thread != None
and not self.beacon_thread.is_alive()):
print("Restart beacon thread")
self.logFile.saveWithDate("Restart beacon thread")
self.beacon_thread = ServerBeaconThread(
threadID=self.threadID + 1,
host_ip=self.host_ip,
broadcast_ip=self.broadcast_ip,
negotiation_port=self.negotiation_port,
sleepDuration=1.9,
logFile=self.logFile)
self.beacon_thread.start()
if (self.server_thread != None
and not self.server_thread.is_alive()):
print("Restart server thread")
self.logFile.saveWithDate("Restart server thread")
self.server_thread = ServerThread(
threadID=self.threadID + 2,
address=self.server_address.asTuple(),
carMap=self.carMap,
logFile=self.logFile)
self.server_thread.start()
if (self.forwarding_thread != None
and not self.forwarding_thread.is_alive()):
print("Restart forwarding thread")
self.logFile.saveWithDate("Restart forwarding thread")
self.forwarding_thread = Forward2CarThread(
threadID=self.threadID + 3,
car_communication_port=self.car_communication_port,
carMap=self.carMap,
period=1.0,
logFile=self.logFile)
self.forwarding_thread.start()
if (self.carSubscriber_thread != None
and not self.carSubscriber_thread.is_alive()):
print("Restart carSubscriber thread")
self.logFile.saveWithDate("Restart carSubscriber thread")
self.carSubscriber_thread = Listen4CarSubscriberThread(
threadID=self.threadID + 4,
host_ip=self.host_ip,
car_subscription_port=self.car_subscription_port,
carMap=self.carMap,
logFile=self.logFile)
self.carSubscriber_thread.start()
if (self.server_address.ip == ''
and self.server_address.port == -1):
self.NegotiateServer()
time.sleep(1.1)
#============================= STOP =======================================
def stop(self):
self.runningThread = False