weatherstation/Logger.py

77 lines
2.4 KiB
Python

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import time
import sys
import traceback
import xml.etree.ElementTree as ET
from timeFunctions import *
from settings import SensorType
import settings
class Logger(object):
def __init__(self, log):
self.temp_sensors = settings.tempSensors
self.temp_prev_default = settings.prev_temps_default
self.prev_temps = []
for i in range(self.temp_sensors):
self.prev_temps.append(self.temp_prev_default)
self.temp_max_diff = settings.tempmaxdiff
self.log = log
self.records = settings.records
self.units = settings.SENSOR_UNITS
def temp_rise(self,old,new,sensor):
if(old==self.temp_prev_default):
return True
if((old-new)>self.temp_max_diff or (new-old)>self.temp_max_diff):
self.log.write('error checking '+sensor+';prev('+str(old)+');cur('+str(new)+'); ... @'+time.ctime()+"\n")
self.log.flush()
return False
else:
return True
##########################################
# common function to write value to file #
##########################################
def write_value(self,value,sensor):
# TODO: catch IOError
valuename=self.records+"/"+sensor+"_"+preptime()
valuelog=open(valuename,'a')
valuelog.write(str(value) + ';' + str(int(time.time())) +"\n")
valuelog.close()
##########################################
# generic callback #
##########################################
def cb_generic(self,value, sensor, type, supress = False):
if(type == SensorType.temp):
i = int(sensor[-1])-1 #sensor contains name, followed by int
if(self.temp_rise(self.prev_temps[i],value,sensor)):
self.write_value(value,sensor)
self.prev_temps[i]=value
elif (type == SensorType.none):
return
else:
self.write_value(value,sensor)
unit=self.units[type]
if not supress:
print(sensor +': ' + str(value/unit[0]) + ' '+unit[1]+', ' + str(time.ctime()))
###########################################
# exception logging #
###########################################
def printException(self,inst):
tree=ET.parse(settings.exceptionlog)
root=tree.getroot()
new=ET.Element('exception',{'class':str(type(inst)).split("'")[1],'date':str(time.ctime()),'time':str(int(time.time())),'type':str(inst)})
new.text=traceback.format_exc()
root.append(new)
tree.write(settings.exceptionlog)
self.log.write('an Exception happen during connection @'+time.ctime()+"\n")
self.log.flush()
print('an Exception happen during connection @'+time.ctime()+"\n")
#end#