Fix numerous issues with recent enhancements

The buffer age was not working as intended
The fix to exit on error exited overly eagerly
The log replay failed to report a third value if file did not exist.

confluent_client/bin/confetty

@@ -85,7 +85,7 @@ def updatestatus(stateinfo={}):
         info.append(laststate['error'])
     if 'clientcount' in laststate and laststate['clientcount'] != 1:
         info.append('clients: %d' % laststate['clientcount'])
-    if 'bufferage' in stateinfo:
+    if 'bufferage' in stateinfo and stateinfo['bufferage'] is not None:
         laststate['showtime'] = time.time() - stateinfo['bufferage']
     if 'showtime' in laststate:
         showtime = laststate['showtime']
@@ -561,7 +561,7 @@ elif shellargs:
     command = " ".join(shellargs)
     do_command(command, netserver)
     quitconfetty(fullexit=True)
-while not doexit:
+while inconsole or not doexit:
     if inconsole:
         rdylist, _, _ = select.select(
             (sys.stdin, session.connection), (), (), 60)

confluent_server/confluent/consoleserver.py

@@ -479,7 +479,7 @@ class ConsoleSession(object):
         """Get the age in seconds of the buffered data
 
         Returns False if no data buffered yet"""
-        self.conshdl.get_buffer_age()
+        return self.conshdl.get_buffer_age()
 
     def reopen(self):
         self.conshdl.reopen()

confluent_server/confluent/log.py

@@ -189,7 +189,7 @@ class Logger(object):
             textfile = open(self.textpath, mode='r')
             binfile = open(self.binpath, mode='r')
         except IOError:
-            return '', 0
+            return '', 0, 0
         fcntl.flock(binfile, fcntl.LOCK_SH)
         binfile.seek(0, 2)
         binidx = binfile.tell() - 16