network check script

controller/README.md

@@ -3,7 +3,7 @@
 ## Installation
 
 1. Go to every subdirectory in drivers directory and follow instructions about installation of drivers
-2. edit controller/config/__init__.py and set your controller ID to unique number 
+2. edit controller/config/__init__.py and set your controller ID to unique number
 3. configure cron to run controller.py every 15 minutes as a superuser:
 
 ```
@@ -12,3 +12,10 @@ crontab -e -u root
 */15 * * * * /usr/bin/python /home/pi/projects/tfm/controller/sensors.py "Automatski, Senad Uka" 120
 */1 * * * * /usr/bin/python /home/pi/projects/tfm/controller/sync_state.py "Automatski, Senad Uka" 120
 ```
+
+4. add following lines at the end of /etc/rc.local
+
+```
+python /home/pi/projects/tfm/controller/lockdown.py
+python /home/pi/projects/tfm/controller/dweet.py
+```

controller/network_check.py

@@ -0,0 +1,3 @@
+import state
+
+state.reboot_if_network_down()

controller/state/__init__.py

@@ -9,6 +9,14 @@ def safely_panic():
     changer = Changer(safe_state,safe_state)
     changer.stop_everything()
 
+def reboot_if_network_down():
+    try:
+        server = Server(config.API_BASE_URL, config.CONTROLLER_ID)
+        server_state = server.get_state()
+        print "Got state from server: " + repr(server_state)
+    except:
+        print "Problem with the network!"
+        commands.getoutput('/sbin/shutdown -r +3')
 
 def sync():
     try:
@@ -35,5 +43,3 @@ def sync():
     except:
         print " panicking safely ! "
         safely_panic()
-        print " rebooting "
-        commands.getoutput('/sbin/shutdown -r +3')