Proper handle of sigterm signal, log reason of shutdown

src/Debug/DebugHook.py

@@ -1,16 +1,18 @@
 import sys
 import logging
+import signal
+import importlib
 
 import gevent
 import gevent.hub
 
 from Config import config
-import importlib
+from . import Debug
 
 last_error = None
 
-def shutdown():
-    print("Shutting down...")
+def shutdown(reason="Unknown"):
+    logging.info("Shutting down (reason: %s)..." % reason)
     if "file_server" in dir(sys.modules["main"]) and sys.modules["main"].file_server.running:
         try:
             if "file_server" in dir(sys.modules["main"]):
@@ -24,7 +26,7 @@ def shutdown():
         sys.exit(0)
 
 # Store last error, ignore notify, allow manual error logging
-def handleError(*args):
+def handleError(*args, **kwargs):
     global last_error
     if not args:  # Manual called
         args = sys.exc_info()
@@ -33,22 +35,23 @@ def handleError(*args):
         silent = False
     if args[0].__name__ != "Notify":
         last_error = args
+
     if args[0].__name__ == "KeyboardInterrupt":
-        shutdown()
-        return
-    if not silent and args[0].__name__ != "Notify":
+        shutdown("Keyboard interrupt")
+    elif not silent and args[0].__name__ != "Notify":
         logging.exception("Unhandled exception")
         if "greenlet.py" not in args[2].tb_frame.f_code.co_filename:  # Don't display error twice
-            sys.__excepthook__(*args)
+            sys.__excepthook__(*args, **kwargs)
 
 
 # Ignore notify errors
-def handleErrorNotify(*args):
-    if args[0].__name__ == "KeyboardInterrupt":
-        shutdown()
-    if args[0].__name__ != "Notify":
-        logging.exception("Unhandled exception")
-        sys.__excepthook__(*args)
+def handleErrorNotify(*args, **kwargs):
+    err = args[0]
+    if err.__name__ == "KeyboardInterrupt":
+        shutdown("Keyboard interrupt")
+    elif err.__name__ != "Notify":
+        logging.error("Unhandled exception: %s" % [args])
+        sys.__excepthook__(*args, **kwargs)
 
 
 if config.debug:  # Keep last error for /Debug
@@ -80,6 +83,12 @@ def handleGreenletError(self, context, type, value, tb):
 
 gevent.hub.Hub.handle_error = handleGreenletError
 
+try:
+    signal.signal(signal.SIGTERM, lambda signum, stack_frame: shutdown("SIGTERM"))
+except Exception as err:
+    logging.debug("Error setting up SIGTERM watcher: %s" % err)
+
+
 if __name__ == "__main__":
     import time
     from gevent import monkey

zeronet.py

@@ -15,12 +15,6 @@ def main():
 
     main = None
     try:
-        import signal
-        try:
-            signal.signal(signal.SIGTERM, lambda signum, stack_frame: sys.exit(0))
-        except Exception as err:
-            print("Error setting up SIGTERM watcher: %s" % err)
-
         app_dir = os.path.dirname(os.path.abspath(__file__))
         os.chdir(app_dir)  # Change working dir to zeronet.py dir
         sys.path.insert(0, os.path.join(app_dir, "src/lib"))  # External liblary directory