ReviewBot: make interval work without tty

ReviewBot.py

@@ -33,6 +33,7 @@ from osclib.memoize import memoize
 from osclib.stagingapi import StagingAPI
 import signal
 import datetime
+import time
 import yaml
 
 try:
@@ -697,6 +698,7 @@ class CommandLineInterface(cmdln.Cmdln):
                 self.logger.exception(e)
 
             if interval:
+                if os.isatty(0):
                     self.logger.info("sleeping %d minutes. Press enter to check now ..."%interval)
                     signal.alarm(interval*60)
                     try:
@@ -705,6 +707,9 @@ class CommandLineInterface(cmdln.Cmdln):
                         pass
                     signal.alarm(0)
                     self.logger.info("recheck at %s"%datetime.datetime.now().isoformat())
+                else:
+                    self.logger.info("sleeping %d minutes." % interval)
+                    time.sleep(interval * 60)
                 continue
             break