Dummy Waage - initial value from last one

bin/beielimon-config.yaml

@@ -10,7 +10,7 @@ scales:
   scale_uuid: "46335715-8454-483b-a17b-571619c5015e"
   interface_type: dummy
   sms_alert_phonenumbers:
-  - "+41765006124"
+  - "+41765006123"
 read_scale_interval_sec: 300
 number_of_samples: 5
 swarm_alarm_threshold_gram: 500

bin/beielimon.py

@@ -17,6 +17,8 @@ import time
 import yaml
 import random
 import string
+import glob
+import re
 
 # Root Path
 APP_ROOT = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
@@ -31,6 +33,27 @@ with open("%s/bin/beielimon-config.yaml" % (APP_ROOT), 'r') as stream:
 # Constants
 INVALID_VALUE = -999
 
+# Wegen der Dummy-Waage moechten wir den letzten Messwert holen koennen
+def GetLastStoredValue(scale_uuid):
+    files = glob.glob("%s/data/weight-%s-????????.log" % (APP_ROOT,scale_uuid))
+    if len(files) > 0:
+        with open(sorted(files)[-1], "r") as f:
+            for line in f: pass
+            result =  line
+
+
+        # Beispiel: 2017-11-07 08:23,0
+        m = re.match("(\d{4})-(\d{2})-(\d{2}) (\d\d:\d\d),(\d+)", result)
+        if m:
+            return int("%s" % (m.group(5)))
+        else:
+            return INVALID_VALUE
+
+    else:
+       return INVALID_VALUE
+
+
+
 class Scale(object):
     def __init__(self, scale_config):
         self.last_values = []
@@ -110,7 +133,13 @@ class ScaleUSB_PCE(Scale):
 class ScaleDummy(Scale):
     def __init__(self,scale_config):
         Scale.__init__(self, scale_config)
-        self.last_values = [ random.randint(500,1000) ]
+        # Wir versuchen, den letzten Wert wieder zu holen
+        last_value = GetLastStoredValue(self.scale_config['scale_uuid'])
+        if last_value != INVALID_VALUE:
+            self.last_values = [ last_value ]
+        else:
+            self.last_values = [ random.randint(500,1000) ]
+
 
     def Read(self):
         # Gewichts- Zu/Abnahme ist Random, manchmal gibt es einen