Writing logs into file is configurable from cli argument (#223)

Author: s-a-tanjim

src/keria/app/cli/commands/start.py

@@ -62,11 +62,15 @@
                     help="TLS server CA certificate chain")
 parser.add_argument("--loglevel", action="store", required=False, default="CRITICAL",
                     help="Set log level to DEBUG | INFO | WARNING | ERROR | CRITICAL. Default is CRITICAL")
+parser.add_argument("--logfile", action="store", required=False, default=None,
+                    help="path of the log file. If not defined, logs will not be written to the file.")
 
 
 def launch(args):
     help.ogler.level = logging.getLevelName(args.loglevel)
-    help.ogler.reopen(name=args.name, temp=True, clear=True)
+    if(args.logfile != None):
+        help.ogler.headDirPath = args.logfile
+        help.ogler.reopen(name=args.name, temp=False, clear=True)
 
     logger = help.ogler.getLogger()