umstrukturierung

Swich/switch.py

@@ -0,0 +1,82 @@
+'''
+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.config     import Config
+
+#import Module
+import database
+import modbus
+
+MYSQL   = 0
+MODBUS  = 1
+
+### 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):
+        '''
+        initialize the swich with the given source and creates a queue and a query
+        it calls the setup method from the source module
+
+        @return: queue and query
+        '''
+        if self.source == MYSQL:
+            self.cursor = database.setup(conf)
+        elif self.source == MODBUS:
+            self.cursor = modbus.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):
+        '''
+        The loop method of the source module is called with a parameter from the query.
+        Its output is written to the queue.
+        '''
+        while True:
+            # Queue implementaion
+            # Queue contains the tablename for query
+            # item = query.get() #block = True
+            # query should be included in the result
+
+            item = self.query.get(block = True)
+
+            if self.source == MYSQL:
+                result = database.loop(self.cursor, item)
+            elif self.source == MODBUS:
+                result = modbus.loop(self.cursor, item)
+
+            #print 'PUT:\t%s' % result
+
+            self.queue.put(result)
+            self.query.task_done()
+            if self.source == MYSQL:
+                sleep(float(conf['mySQL_speed']))
+            elif self.source == MODBUS:
+                sleep(0.1)