prepare application

src/ScanRateConsideringQueueFeeder.py

@@ -0,0 +1,35 @@
+import threading
+import datetime
+from AbstractNotificationReceiver import AbstractNotificationReceiver
+
+
+class ScanRateConsideringQueueFeeder(threading.Thread, AbstractNotificationReceiver):
+    def __init__(self, config, registers, queue):
+        super().__init__()
+        self.config = config
+        self.registers = registers
+        self.queue = queue
+        self.delayEvent = threading.Event()
+
+    def getMinimalScanrate(self):
+            return min([r.scanRate.total_seconds() for r in self.registers if r.scanRate])
+
+    def receiveNotification(self, arg):
+        print("ScanRateConsideringQueueFeeder:registersChanged")
+        self.delay = self.getMinimalScanrate()
+
+    def run(self):
+        self.delay = self.getMinimalScanrate()
+        while True:
+            registersToBeHandled = [
+                r for r in self.registers if ((not r.enqueued) and
+                                              (r.scanRate) and
+                                              ((not r.lastContact) or 
+                                               (r.lastContact + r.scanRate < datetime.datetime.now())))
+            ]
+            registersToBeHandled.sort(key=lambda x : x.scanRate)
+            for r in registersToBeHandled:
+                r.setCommand('r')
+                self.queue.put(r)
+                r.enqueued = True
+            self.delayEvent.wait(self.delay)