Merge pull request #2 from F-WuTS/feature/locking

Add Locking

compLib/__init__.py

@@ -1,9 +1,10 @@
 __version__ = "0.4.0-0"
 
+import sys
 import importlib
 import compLib.LogstashLogging
 import compLib.MetricsLogging
-
+from compLib.Lock import Lock
 
 apt_found = importlib.util.find_spec("apt") is not None
 spi_found = importlib.util.find_spec("spidev") is not None
@@ -25,6 +26,12 @@ if apt_found:
 else:
     print("apt is not installed! This is for local development only!")
     
+if Lock.is_locked():
+    print("Another program using compLib is still running! Delete /root/complib.lock if this is an error. Exiting...")
+    sys.exit()
+else:
+    Lock.lock()
+
 if spi_found:
     from compLib.Spi import Spi
     from compLib.Reset import Reset