Give the aiohmi command line utilities an event loop

Console.main_loop drives Session.wait_for_rsp, which is a coroutine, so it
spun without ever waiting for a packet. It is a coroutine now, and pyghmicons
runs its main under asyncio.run. pyghmiutil had the same shape around
Command.eventloop.

confluent_server/aiohmi/cmd/pyghmicons.py

@@ -14,6 +14,7 @@
 
 """ A simple little script to exemplify/test ipmi.console module """
 
+import asyncio
 import fcntl
 import os
 import select
@@ -50,7 +51,7 @@ def _print(data):
         raise Exception(data)
 
 
-def main():
+async def main():
     tcattr = termios.tcgetattr(sys.stdin)
     newtcattr = tcattr
     # TODO(jbjohnso): add our exit handler
@@ -75,7 +76,7 @@ def main():
         inputthread = threading.Thread(target=_doinput, args=(sol,))
         inputthread.daemon = True
         inputthread.start()
-        sol.main_loop()
+        await sol.main_loop()
 
     except Exception:
         currfl = fcntl.fcntl(sys.stdin.fileno(), fcntl.F_GETFL)
@@ -85,4 +86,4 @@ def main():
 
 
 if __name__ == '__main__':
-    sys.exit(main())
+    sys.exit(asyncio.run(main()))

confluent_server/aiohmi/cmd/pyghmiutil.py

@@ -17,6 +17,7 @@ it isn't conceived as a general utility to actually use, just help developers
 understand how the ipmi_command class workes.
 """
 
+import asyncio
 import functools
 import os
 import sys
@@ -64,7 +65,7 @@ def docommand(args, result, ipmisession):
               data=map(lambda x: int(x, 16), args[2:])))
 
 
-def main():
+async def main():
     if (len(sys.argv) < 3) or 'IPMIPASSWORD' not in os.environ:
         print("Usage:")
         print(" IPMIPASSWORD=password %s bmc username <cmd> <optarg>" %
@@ -85,8 +86,8 @@ def main():
             onlogon=functools.partial(docommand, sys.argv[3:]))
 
     if ipmicmd:
-        ipmicmd.eventloop()
+        await ipmicmd.eventloop()
 
 
 if __name__ == '__main__':
-    sys.exit(main())
+    sys.exit(asyncio.run(main()))

confluent_server/aiohmi/ipmi/console.py

@@ -418,7 +418,7 @@ class Console(object):
             # sooner than timeout suggests is evidently a big deal
             await self.send_payload(payload=self.lastpayload, retry=False)
 
-    def main_loop(self):
+    async def main_loop(self):
         """Process all events until no more sessions exist.
 
         If a caller is a simple little utility, provide a function to
@@ -431,7 +431,7 @@ class Console(object):
         # TODO(jbjohnso): wait_for_rsp is not returning a true value for our
         # own session
         while (1):
-            session.Session.wait_for_rsp(timeout=600)
+            await session.Session.wait_for_rsp(timeout=600)
 
 
 class ServerConsole(Console):