ems/src/switch.py

'''
Created on 15.11.2013

@author: Philipp Rauch
@version: 0.1
'''

from threading  import Thread
from Queue      import Queue
from time       import sleep
from config     import Config

#import Module
import database

MYSQL   = 0
CSV     = 1
XML     = 2
JSON    = 3

### LOAD CONFIG ###
c = Config()
conf = c.readConf()

'''
TODO: comment :)
'''

class Switch(Thread):

    def __init__(self, source = MYSQL):
        Thread.__init__(self)
        self.source = source

    def initialisiere(self):
        self.cursor = database.setup(conf)

        ### init Query ###
        self.query = Queue()
        if conf['config_debug']:
            print '\tSWITCH-QUERY:\t', self.query

        ### init Queue ###
        self.queue = Queue()
        if conf['config_debug']:
            print '\tSWITCH-QUEUE:\t', self.queue

        return self.queue, self.query

    def run(self):
        while True:
            # Queue implementaion
            # Queue contains the tablename for query
            # item = query.get() #block = True
            # query should be included in the result

            item = 'dc_labor/device/battery'
            result = database.loop(self.cursor, item)

            #print 'PUT:\t%s' % result

            self.queue.put(result)
            sleep(float(conf['mySQL_speed']))

    def getItem(self, block = False):
        return self.queue.get(block)