Use new EventHandlerBase API to simplify graceful stop logic

solvable/src/event_handler_main.py

@@ -165,10 +165,8 @@ def main():
         key='test'
     )
 
-    event_handlers = EventHandler.get_local_instances()
-    def stop(sig, frame):  # pylint: disable=unused-argument
-        for eh in event_handlers:
-            eh.stop()
+    def stop(*_): 
+        EventHandler.stop_all_instances()
         exit(0)
     signal(SIGTERM, stop)
     signal(SIGINT, stop)

solvable/src/pipe_io_main.py

@@ -4,7 +4,7 @@ from signal import signal, SIGTERM, SIGINT
 
 from tornado.ioloop import IOLoop
 
-from tfw.event_handlers import EventHandlerBase
+from tfw.builtins import EventHandler
 from tfw.builtins import PipeIOEventHandler
 from tfw.config import TFWENV
 from tfw.logging import Log, Logger, LogFormatter, VerboseLogFormatter
@@ -19,23 +19,13 @@ from pipe_io_auxlib import (
 LOG = logging.getLogger(__name__)
 
 
-if __name__ == '__main__':
+def main():
+    # pylint: disable=unused-variable
     Logger([
         Log(stderr, LogFormatter(20)),
         Log(TFWENV.LOGFILE, VerboseLogFormatter())
     ]).start()
 
-    """
-    Creates general purpose pipes.
-    The first parameter associates the receiving pipe with a key, which is
-    an empty string in this case. It has a special meaning, you can
-    subscribe to every kind of message with this key.
-    If you wish to filter incoming data, specify a single or more keys in
-    a list, eg.: processmanager, ide, key...
-    You can send/receive JSON messages to/from the TFW server as any user,
-    because we gave read+write permissions, without that parameter, only
-    the owner has access to the pipes.
-    """
     json_pipe = PipeIOEventHandler(
         '',
         '/tmp/tfw_json_send',
@@ -77,12 +67,14 @@ if __name__ == '__main__':
         '/tmp/tfw_fsm_recv'
     )
 
-    event_handlers = EventHandlerBase.get_local_instances()
-    def stop(sig, frame):  # pylint: disable=unused-argument
-        for eh in event_handlers:
-            eh.stop()
+    def stop(*_): 
+        EventHandler.stop_all_instances()
         exit(0)
     signal(SIGTERM, stop)
     signal(SIGINT, stop)
 
     IOLoop.instance().start()
+
+
+if __name__ == '__main__':
+    main()