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Server.py
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# coding=UTF-8
from afruntime.log import log as debugLog
from afruntime.Exceptions import StatisticNotFound, DeviceNotFound
from datetime import datetime, timedelta
from afruntime.device import Device
from afruntime.device.classes import ERR_SUCCESS
import SocketServer
from Protocol import *
from socket import SOL_TCP, TCP_NODELAY, SOL_SOCKET, SO_KEEPALIVE
import Queue
from time import sleep
from weakref import proxy
from Order import *
from Connections import CONNECTIONS
from threading import Thread
from lancero.operators import Get
import lancero.client
import lancero.base
from afruntime.config import getRegistry
lancero.client.registerServer(lancero.client.ServerDefinitionEntry('127.0.0.1', getRegistry('afsensors-lancero-port'), 'afsensors', ''))
afsObj = lancero.base.RemoteProxy(lancero.base.RemoteSource('afsensors', 0))
class ReaderThread(Thread):
def __init__(self, rqh):
'''I assume RQH is a WeakProxy'''
self.rqh = rqh
self.device = rqh.device
self.device.setStat('thread.reader', 1)
self.id = rqh.id
Thread.__init__(self)
def run(self):
try:
self.xrun()
except Exception, e:
self.device.setStat('thread.reader', 0)
self.device.setStat('online', 0)
Get(afsObj.offline(self.id))
try:
del CONNECTIONS[self.id]
except:
pass
debugLog('reader exception for '+str(self.id)+': '+str(e))
def xrun(self):
self.device.setStat('thread.reader.lasttick', datetime.now())
self.device.setStat('thread.reader.status', 'start')
packa = RequestHandlerPacket(self.rqh)
while True:
self.device.setStat('queue.sent', self.rqh.incoming.qsize())
self.device.setStat('thread.reader.status', 'wait')
order = self.rqh.incoming.get(True, 61) # czekaj na następny rozkaz
self.device.setStat('thread.reader.status', 'readin')
packa.readIn()
self.device.setStat('thread.reader.status', 'readedin')
self.device.setStat('thread.reader.lasttick', datetime.now())
if isinstance(order, ReadOrder):
rti = [getGET_HOLDING_RET_ERROR, getGET_COIL_RET_ERROR, getGET_INPUT_RET_ERROR]
pr = rti[order.regtype](packa)
if pr.error != ERR_SUCCESS:
self.device.setStat('transmission.errors', self.device.getStat('transmission.errors')+1)
if self.device.getRegistry('correct.errors'):
order.roes -= 1
if order.roes <= 0:
self.device.setValue(order.address, order.regtype, order.register, pr)
else:
self.rqh.orders.put(order)
else:
self.device.setValue(order.address, order.regtype, order.register, pr)
else:
self.device.setStat('transmission.successes', self.device.getStat('transmission.successes')+1)
if order.transaction != None:
self.device.setTransaction(order.transaction)
self.device.setValue(order.address, order.regtype, order.register, pr)
if isinstance(order, WriteOrder):
if getWRITE_GENERIC(packa):
self.device.setStat('transmission.successes', self.device.getStat('transmission.successes')+1)
if order.transaction != None:
self.device.setTransaction(order.transaction)
else:
self.device.setStat('transmission.errors', self.device.getStat('transmission.errors')+1)
if self.device.getRegistry('correct.errors'):
order.roes -= 1
if order.roes > 0:
self.rqh.orders.put(order)
if isinstance(order, NetinfoGetOrder):
ntfo = getGIVE_ME_SETTINGS(packa)
writeSettings(order.id, ntfo)
if isinstance(order, NetinfoSetOrder):
self.device.setStat('transmission.successes', self.device.getStat('transmission.successes')+1)
if order.transaction != None:
self.device.setTransaction(order.transaction)
if isinstance(order, KeepaliveOrder):
self.device.setStat('transmission.successes', self.device.getStat('transmission.successes')+1)
if order.transaction != None:
self.device.setTransaction(order.transaction)
class P24Handler(SocketServer.BaseRequestHandler): # Obiekty przetwarzający, yay!
def finish(self):
self.device.setStat('thread.handler', 0)
self.device.setStat('online', 0)
self.device.setStat('disconnected.on', datetime.now())
try:
Get(afsObj.offline(self.id))
except:
pass
debugLog('Finishing for '+str(self.id))
try:
del CONNECTIONS[self.id]
except:
pass
def stall_incoming(self):
self.device.setStat('thread.handler.status', 'stall')
self.device.setStat('queue.pending', self.orders.qsize())
if self.device.getStat('thread.reader.lasttick') + timedelta(0, 60) < datetime.now():
debugLog('Handler quits due to thread.reader watchdog faulting')
self.device.setStat('thread.reader.lasttick.watchdogged', datetime.now())
raise Exception, ' watchdog'
while self.incoming.qsize() > 100:
self.device.setStat('thread.handler.status', 'stall-busywait')
if self.device.getStat('thread.reader.lasttick') + timedelta(0, 60) < datetime.now():
debugLog('Handler quits due to thread.reader watchdog faulting')
self.device.setStat('thread.reader.lasttick.watchdogged', datetime.now())
raise Exception, 'qsize > 100 + watchdog'
sleep(1)
def handle(self):
'''If an exception happens in handle(), then finish() is not executed'''
self.request.setsockopt(SOL_TCP, TCP_NODELAY, 1) # Nagle - sio!
self.request.setsockopt(SOL_SOCKET, SO_KEEPALIVE, 0) # no keepalive
self.request.setblocking(1)
self.request.settimeout(60)
self.packet = RequestHandlerPacket(proxy(self))
self.packet.readInStrict(12) # wczytaj pakiet inicjalizacji
id, self.protocolVersion = getI_INITIALIZATION(self.packet)
debugLog('Remote identified as '+str(id))
self.id = id
self.incoming = Queue.Queue()
self.orders = Queue.Queue()
try:
self.device = Device(id)
except DeviceNotFound:
debugLog('Unrecognized device '+str(id))
return
try:
if self.device.getStat('thread.handler') == 1:
raise Exception
if self.device.getStat('thread.reader') == 1:
raise Exception
except StatisticNotFound:
pass
CONNECTIONS[self.id] = self
try:
self.xhandle()
except Exception, e:
debugLog('Exception for '+str(self.id)+': '+str(e))
def xhandle(self):
# Przygotuj statystyki
self.device.setStat('thread.handler', 1)
self.device.setStat('transmission.errors', 0)
self.device.setStat('transmission.successes', 0)
self.device.setStat('queue.sent', 0)
self.device.setStat('queue.pending', 0)
self.device.setStat('connected.on', datetime.now())
self.device.setStat('online', 1)
self.device.setStat('last.tick', None)
Get(afsObj.online(self.id))
self.device.setStat('thread.handler.status', 'start')
rant = ReaderThread(proxy(self))
rant.start()
mkCONFIRMATION(self.packet)
self.packet.writeOut()
debugLog('Passing onto main loop for '+str(self.id))
while True:
self.device.setStat('thread.handler.status', 'WAIT')
try:
order = self.orders.get(True, 61) # czekaj na następny rozkaz
except:
debugLog('Disconnected '+str(self.id)+' because of no orders')
raise Exception, 'no orders'
if isinstance(order, ReadOrder):
self.stall_incoming()
rti = [mkGET_HOLDING_RET_ERROR, mkGET_COIL_RET_ERROR, mkGET_INPUT_RET_ERROR]
rti[order.regtype](self.packet, order.address, order.register)
self.packet.writeOut()
self.incoming.put(order.supplyId(self.id))
elif isinstance(order, WriteOrder):
self.stall_incoming()
rti = [mkWRITE_HOLDING, mkWRITE_COIL]
rti[order.regtype](self.packet, order.address, order.register, order.value)
self.packet.writeOut()
self.incoming.put(order.supplyId(self.id))
debugLog('sent write')
elif isinstance(order, NetinfoGetOrder):
self.stall_incoming()
mkGIVE_ME_SETTINGS(self.packet)
self.packet.writeOut()
self.incoming.put(order.supplyId(self.id))
elif isinstance(order, NetinfoSetOrder):
self.stall_incoming()
mkCOMPLEX_SETTINGS_PRZEPIER(self.packet, (order.iptuple, order.subnettuple, order.routertuple, order.dnstuple, order.target))
self.packet.writeOut()
self.incoming.put(order.supplyId(self.id))
elif isinstance(order, KeepaliveOrder):
self.stall_incoming()
mkKEEPALIVE(self.packet)
self.packet.writeOut()
self.incoming.put(order.supplyId(self.id))
elif isinstance(order, RebootOrder): # Jak najprościej zrobić reboota? Rozłączyć urządzenie.
return
elif isinstance(order, SleepOrder):
sleep(order.seconds)
elif isinstance(order, VendorinfoGetOrder):
self.stall_incoming()
mkGETVENDORINFO(self.packet)
self.packet.writeOut()
self.incoming.put(order.supplyId(self.id))
self.device.setStat('last.tick', datetime.now())
from afruntime.server import donothing
from SocketServer import ThreadingMixIn, TCPServer
class ThreadingTCPServer(ThreadingMixIn, TCPServer):
pass
def run():
tcs = ThreadingTCPServer(('', getRegistry('afserver-p24-port')), P24Handler)
tcs.serve_forever()
print 'P24 started'
donothing()