#!/usr/bin/python

import Queue
import time
import shelve
import os
import sys

from logger import Logger
import DynHandler
import DnsHandler
import Expirer
import DynReceiver
import CmdReceiver
import XmlRpcReceiver
import Entry
import Event



MSG_TIME_CORRIDOR = 120
EVENT_LIFE_TIME = 5
NULL_ADDRESS = '0.0.0.0'
TTL = 120
EXPIRY_PERIOD = 10
NAMESERVER = '88.198.170.2'
TSIGKEY = { "monitoring." : "+xLH8GuZnEgBljuIEM/iDA==" }
PID_FILE = "/var/db/yadyn/yadyn.pid"
ENTRIES_FILE = "/var/db/yadyn/entries"
ACTIONLOG_DIR = "/var/db/yadyn/actionlog"
ADMIN_PWD = 'test123'
DNS_DUMMY = True
DEBUG = True



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

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



Logger.openlog()
if DEBUG:
    Logger.debugEnable()

Logger.log("yadyn starting")

entries = shelve.open(ENTRIES_FILE, flag='c', writeback=True)
Logger.debug("Shelve opened")

try:
    eventq = Queue.Queue()
    dnsq = Queue.Queue()
    Logger.debug("Queues created")

    Event.Event.setParams(entries, MSG_TIME_CORRIDOR, dnsq)

    dynHandler = DynHandler.DynHandler(eventq)
    dynHandler.start()
    Logger.debug("DynHandler started")

    dnsHandler = DnsHandler.DnsHandler(dnsq, DNS_DUMMY, TSIGKEY, NAMESERVER, TTL, ACTIONLOG_DIR)
    dnsHandler.start()
    Logger.debug("DnsHandler started")

    dynReceiver = DynReceiver.DynReceiver(("", 8053), eventq)
    dynReceiver.start()
    Logger.debug("DynReceiver started")

    expirer = Expirer.Expirer(entries, EVENT_LIFE_TIME, NULL_ADDRESS, EXPIRY_PERIOD, dnsq)
    expirer.start()
    Logger.debug("Expirer started")

    cmdReceiver = CmdReceiver.CmdReceiver(("", 8023), entries, ADMIN_PWD)
    cmdReceiver.start()
    Logger.debug("CmdReceiver started")

    xmlRpcReceiver = XmlRpcReceiver.XmlRpcReceiver(("", 8024), entries, ADMIN_PWD)
    xmlRpcReceiver.start()
    Logger.debug("XmlRpcReceiver started")



    Logger.log("yadyn running")
    while True:
        entries.sync()
        time.sleep(10)
finally:
    entries.close()
    Logger.debug("Shelves closed")
    Logger.log("yadyn terminating")