'''
Created on 20.05.2015

@author: wn
'''

from MqttReceiver import MqttReceiver
from MongoWriter import MongoWriter
import Queue
import os
import sys
from logger import Logger
import time

DEBUG = True
BACKGROUND = False
PID_FILE = "/tmp/mqtt2mongo.pid"
LOG_FILE = "/tmp/mqtt2mongo.log"
BROKER = "mqttbroker"
TOPICS = ['IoT/Measurement/#', 'IoT/WiFiPowerMeter/Measurement']
MONGO_HOST = "localhost"
MONGO_DATABASE = "iot"
MONGO_COLLECTION = "iot"


if BACKGROUND:
    pid = os.fork()
else:
    pid = 0

if pid:
    pidFile = file(PID_FILE , mode='w')
    pidFile.write("%i\n" % pid)
    pidFile.close()
    sys.exit(0)

Logger.openlog(LOG_FILE)

if DEBUG:
    Logger.debugEnable()

Logger.log("mqtt2mongo starting")



try:
    queue = Queue.Queue()
    Logger.log("queue created ...")
    
    mongoWriter = MongoWriter(queue, MONGO_HOST, MONGO_DATABASE, MONGO_COLLECTION)
    mongoWriter.start()
    Logger.log("MongoWriter started ...")
    
    mqttReader = MqttReceiver.create(queue, BROKER, TOPICS)
    mqttReader.start()
    Logger.log("MqttReader started ...")
    
    Logger.log("mqtt2mongo running")
    
    while (True):
        time.sleep(10)
except Exception, e:
    Logger.log("mqtt2mongo dying from %s, %s" % (str(e), e.msg))
finally:
    Logger.log("mqtt2mongo terminating ...")