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tk102-server.py
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tk102-server.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
#
import logging
import logging.handlers
import sys
import SocketServer
import time
import datetime
import select
import getopt
import os
import signal
import operator
import shutil
import re
from collections import namedtuple
try:
import cPickle as pickle
except:
import pickle
from POSHandler import *
logging.basicConfig(level=logging.DEBUG, format='%(asctime)s %(levelname)-8s %(message)s')
#
rtfile = logging.handlers.RotatingFileHandler("./tk102.log",maxBytes=1024*1024*10, backupCount=5)
console = logging.StreamHandler()
#
glogger = logging.getLogger('TK102')
rtformat='%(asctime)s %(levelname)-8s %(message)s'
rtformatter = logging.Formatter(fmt=rtformat)
rtfile.setFormatter(rtformatter)
glogger.addHandler(rtfile)
glogger.propagate = False #stop console log for this one
# Set up console
cformat='%(asctime)s %(message)s'
cformatter = logging.Formatter(fmt=cformat, datefmt="%Y%m%d %H:%M:%S")
console.setFormatter(cformatter)
console.setLevel(logging.INFO)
glogger.addHandler(console)
#
Pos = namedtuple('Pos', 'imei, lat, lon, spd, bearing, acc, idx')
class TK102RequestHandler(SocketServer.BaseRequestHandler):
def __init__(self, request, client_address, server):
self.logger = glogger #logging.getLogger('TK102Handler')
self.logger.debug('New request')
SocketServer.BaseRequestHandler.__init__(self, request, client_address, server)
return
def debug(self, msg):
self.logger.debug("[%s] "+str(msg), self.imei)
def info(self, msg):
self.logger.info("[%s] "+str(msg), self.imei)
def error(self, msg):
self.logger.error("[%s] "+str(msg), self.imei)
def on_start(self):
"""
Called when a new tracker is initialized.
"""
if self.poshandler:
self.poshandler.on_start()
def on_finish(self):
"""
Called before the thread exits.
"""
if self.poshandler:
self.poshandler.on_finish()
def on_msg(self, msg):
if self.poshandler:
self.poshandler.on_msg(str(msg))
def on_position(self):
"""
Called everytime we receive a GPS position string.
"""
if self.poshandler:
self.poshandler.on_position()
def on_stationary(self):
"""
Called if last two positions are the same. To be implemented.
"""
if self.poshandler:
self.poshandler.on_stationary()
def on_start_move(self):
"""
Called if moving again after stationary destection. To be implemented.
"""
if self.poshandler:
self.poshandler.on_start_move()
def send(self, msg):
self.debug('send: '+msg)
self.request.send(msg+"\n")
self.bytes_s += len(msg)+1
def handle(self):
self.server.socket.setblocking(0)
#self.server.socket.settimeout(10.0)
cur_pid = os.getpid() #threading.current_thread()
self.logger.info("handle start, pid: "+str(cur_pid))
self.loop = True
self.counts = 120
self.counter = self.counts
self.last = time.time()
self.pid = str(cur_pid)
self.imei = "PID: "+self.pid #until we get the real one
self.url = ""
self.ctldir = "tk102pid_"+self.pid
self.lastfile = self.ctldir+"/last" #touched, for timestamp
self.cmdfile = self.ctldir+"/cmd" #reads a command from this file if it exists
self.imeifile = self.ctldir+"/imei" #contains imei nr
self.infofile = self.ctldir+"/info" #contains last lat,lon,... (pickled)
self.bytesfile = self.ctldir+"/bytes" #contains bytes received/sent (pickled)
self.exitfile = self.ctldir+"/exit" #written on tracker exit/disappearance
self.lat = 0
self.lon = 0
self.spd = 0
self.bearing = 0
self.acc = 0
self.pos = None
self.bytes_r = 0
self.bytes_s = 0
self.posidx = 0 # number of positions received
self.poshandler = None
# create control dir
try:
if not os.path.exists(self.ctldir):
os.mkdir(self.ctldir)
self.debug("created "+self.ctldir)
else:
self.info("ctldir existed.")
except:
self.logger.error("[%s] Could not create dir ["+self.ctldir+"]", self.imei)
self.loop = False
#create last file
try:
fp_last = open(self.lastfile, 'w')
fp_last.write(str(cur_pid))
fp_last.close()
except:
self.error("Could not create 'last' file.")
self.loop = False
#
# LOOP
#
while self.loop:
sdata = ""
try:
sdata = self.request.recv(1024)
if not sdata:
self.error("Not data.")
self.counter = 0
except socket.error as err:
if str(err) == "[Errno 35] Resource temporarily unavailable":
time.sleep(0.1) #OS X bug workaround
continue
self.error("Socket error.")
self.counter = 0
if sdata == "":
self.counter = self.counter - 1
else:
self.bytes_r += len(sdata)
sdata = sdata.rstrip()
self.debug("recv("+sdata+")")
# If '\n' in data more than once we have more lines.
lc = 0
for data in sdata.split('\n'):
data = data.rstrip()
self.info("line["+str(lc)+"]: ("+data+")")
lc += 1
# "##,imei:35971004071XXXX,A;
if data[0:7] == "##,imei": # FIRST CONTACT
imei_re = re.compile("##,imei:(\d+),A;")
m = imei_re.match(data)
if m:
self.imei = m.group(1)
self.logger = glogger
self.info("Init: imei "+self.imei)
# create imei file
try:
fp_imei = open(self.imeifile, 'w')
fp_imei.write(self.imei)
fp_imei.close()
except:
self.error("Could not create 'imei' file")
self.loop = False
#os.utime(last, None)
self.send("LOAD")
#
for (rex, out_str) in startups:
if re.match(rex, self.imei):
self.debug('Found startup entry.')
cmd = out_str.replace("IMEI", self.imei)
self.send(cmd)
#
self.last = time.time()
self.counter = self.counts
self.poshandler = POSHandler( self )
self.on_start()
elif data == self.imei+";": #"35971004071XXXX;":
self.send("ON")
self.last = time.time()
self.counter = self.counts
os.utime(self.lastfile, None)
#imei:35971004071XXXX,tracker,1212220931,,F,083137.000,A,5620.2932,N,01253.7255,E,0.00,0;
#imei:35971004071XXXX,tracker,000000000,,L,,,177f,,a122,,,;
# check for L(ost) of F(ix) maybe also? ^
elif data[0:4] == "imei":
data = data[:-1] #remove ;
parts = data.split(',')
if len(parts) > 11:
self.last = time.time()
self.counter = self.counts
os.utime(self.lastfile, None) #mark OK
#print parts[7],parts[8],parts[9],parts[10]
#
# parse messages "help me", "et", etc?
# imei:35971004071XXXX,et,1304041745,,F,164528.000,A,5150.6452,N,00551.9452,E,0.00,0;
# imei:35971004071XXXX,help me,1304041743,,F,164345.000,A,5150.6452,N,00551.9452,E,0.00,0;
# imei:35971004071XXXX,tracker,1304041747,,F,164726.000,A,5150.6452,N,00551.9452,E,0.00,0;
if parts[8] != "":
#5620.2932 = ddmm.mmmm
#
ddmmmmmm = float(parts[7])
degs = int(ddmmmmmm / 100)
mins = ddmmmmmm - (degs*100)
lat = degs + mins/60
if parts[8] == "S":
lat = -lat
self.lat = round(lat, 5)
ddmmmmmm = float(parts[9])
degs = int(ddmmmmmm / 100)
mins = ddmmmmmm - (degs*100)
lon = degs + mins/60
if parts[10] == "W":
lon = -lon
self.lon = round(lon, 5)
#
self.spd = float(parts[11])*0.44704 #mi/h,to km/h,to m/s
self.bearing = -1
if parts[12] != "":
self.bearing = parts[12]
#
#'imei, lat, lon, spd, bearing, acc
self.pos = Pos(self.imei, self.lat,self.lon,self.spd,self.bearing,self.acc,self.posidx)
with open(self.infofile, "w") as f:
pickle.dump(self.pos, f)
self.on_position()
self.posidx += 1
#
msg = parts[1]
if msg != "tracker": #could be SOS, battery low, etc.
self.on_msg(msg)
else:
self.info(data)
time.sleep(.1)
#
if self.counter <= 0:
self.debug("Count-out, exiting")
self.loop = False
# Check for a command in cmd file
if self.cmdfile and os.path.exists(self.cmdfile):
try:
fp_cmd = open(self.cmdfile, 'r')
cmd = fp_cmd.readline()
cmd = cmd[0:-1]
fp_cmd.close()
new_cmd = self.cmdfile+"_"+str(int(time.time()))
#os.unlink(self.cmdfile) #or move to "cmd_timestamp"
shutil.move(self.cmdfile, new_cmd)
self.debug("cmd moved to "+new_cmd)
if cmd[0:1] == 'C':
sec = int(cmd[1:])
cmd = "**,imei:"+self.imei+",C,"+str(sec)+"s"
self.info(cmd)
time.sleep(1)
self.request.send(cmd+"\n")
self.bytes_s += (len(cmd) + 1)
if cmd[0:1] == 'E': #clear "help me" message
cmd = "**,imei:"+self.imei+",E"
self.info(cmd)
time.sleep(1)
self.request.send(cmd+"\n")
self.bytes_s += (len(cmd) + 1)
if cmd[0:1] == 'G': #clear "help me" message
cmd = "**,imei:"+self.imei+",G"
self.info(cmd)
time.sleep(1)
self.request.send(cmd+"\n")
self.bytes_s += (len(cmd) + 1)
except:
self.error("Could not handle 'cmd' file.")
# Write receive/send stats
with open(self.bytesfile, "w") as f:
pickle.dump((self.bytes_r, self.bytes_s), f)
self.info('handle ready')
return
def finish(self):
self.info('handle finish')
self.on_finish()
try:
fp_exit = open(self.exitfile, 'w')
fp_exit.write(self.imei)
fp_exit.close()
except:
self.error("Could not create 'exit' file")
self.info( "bytes read="+str(self.bytes_r)+" bytes sent="+str(self.bytes_s)+" points="+str(self.posidx) )
return SocketServer.BaseRequestHandler.finish(self)
class TK102Server(SocketServer.ForkingMixIn, SocketServer.TCPServer):
timeout = 10
daemon_threads = True
allow_reuse_address = True
def determine_td(d):
"""
Difference between ctime of imei file (on creation) and the last
access time of the last file is the total running time.
"""
td0 = 0
td1 = 0
if os.path.exists(d+"/last"):
td0 = int(float(os.stat(d+"/last").st_atime))
if os.path.exists(d+"/imei"):
td1 = int(float(os.stat(d+"/imei").st_ctime))
td = abs(td0 - td1)
return td
def on_exit(imei, msg):
"""
Called when the tread is killed/tracker disappeared.
"""
ph = POSHandler( None )
ph.on_exit(imei, msg)
if __name__ == '__main__':
import socket
import threading
#startups = { ("35971004071XXXX", "**,imei:IMEI,C,300s") ]
startups = [ ("\d+" , "**,imei:IMEI,C,300s") ] #if imei matches, send string, replaces IMEI with real imei.
# Remove left over directories form last time.
dirs = os.listdir(".")
for d in dirs:
if d[0:9] == "tk102pid_":
glogger.info("RMDIR: "+d)
td = determine_td(d)
glogger.info("Time delta: %s", str(datetime.timedelta(seconds=td)))
shutil.rmtree(d)
PORT = 9000
address = ('', PORT)
server = TK102Server(address, TK102RequestHandler)
ip, port = server.server_address
t = threading.Thread(target=server.serve_forever)
t.setDaemon(True) # don't hang on exit
t.start()
glogger.info('Server loop running in process:'+str(os.getpid()))
tout = 180 #tracker timeout, 2x90 seconds
while True:
try:
time.sleep(1)
# Check our directories
dirs = os.listdir(".")
for d in dirs: #Loop over our tk102pid_nnn directories
if d[0:8] == "tk102pid":
if not os.path.exists(d+"/last"): #not live
continue
if os.path.exists(d+"/exit"): #was killed/exited
continue
# time between now and last sign of life:
td = int(time.time()-float(os.stat(d+"/last").st_atime))
if (td > 0 and operator.mod(td,91) == 0) or (td > tout):
glogger.debug(d+":"+str(td)) #already 91 seconds without update
if td >= tout+2: #we timed out, consider the tracker dead
# td between imei and last file is running/alive time
# of tracker. Time taken from file's timestamp.
td = determine_td(d)
glogger.info("Tracker gone after: %s", str(datetime.timedelta(seconds=td)))
#
f = open(d+"/last", 'r')
tpid = int(f.readline())
f.close()
# write in info table that tracker died here? imei?
glogger.info("No more data from tracker (%s).", str(tpid))
imei = "invalid"
try:
with open(d+"/imei", "r") as f:
imei = str(f.readline())
except:
glogger.exception("Could not read 'imei' file.")
glogger.debug("Killing: "+str(tpid)+" imei "+str(imei))
try:
os.kill(tpid, signal.SIGTERM)
except:
glogger.error("Could not kill process "+str(tpid)) #probably already gone
# create killed file
try:
fp_killed = open(d+"/exit", 'w')
fp_killed.write(str(tpid))
fp_killed.close()
except:
glogger.exception("Could not create 'exit' file.")
# read nr bytes
try:
with open(d+"/bytes", "r") as f:
(bytes_r, bytes_s) = pickle.load(f)
glogger.info( str(imei)+": bytes read="+str(bytes_r)+" bytes sent="+str(bytes_s))
except:
glogger.exception("Could not read 'bytes' file.")
on_exit(imei, "After "+str(datetime.timedelta(seconds=td))+"\nbytes read="+str(bytes_r)+" bytes sent="+str(bytes_s))
except KeyboardInterrupt:
sys.exit(0)