bitbake: toasterui: proper exit code on toaster errors

This patch modifies the toasterui to properly return the exit
code based on the errors found in the toaster itself.

The upload event file API call will not delete event logs for which
toasterui showed an error. This will facilitate debugging.

Minor enhancement in the buildinfohelper to reduce the number
of lookups on unknown layer objects (prevented testing of the patch).

(Bitbake rev: 1ddd6a9e4280a4adf971132ff1fe7ec9b3252905)

Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/bin/toaster-eventreplay

@@ -26,6 +26,7 @@
 # as a build eventlog, and the ToasterUI is used to process events in the file
 # and log data in the database
 
+from __future__ import print_function
 import os
 import sys, logging
 
@@ -39,12 +40,6 @@ from bb.ui import toasterui
 import sys
 import logging
 
-logger = logging.getLogger(__name__)
-console = logging.StreamHandler(sys.stdout)
-format_str = "%(levelname)s: %(message)s"
-logging.basicConfig(format=format_str)
-
-
 import json, pickle
 
 
@@ -168,12 +163,12 @@ class MockConfigParameters():
 # run toaster ui on our mock bitbake class
 if __name__ == "__main__":
     if len(sys.argv) < 2:
-        logger.error("Usage: %s event.log " % sys.argv[0])
+        print("Usage: %s event.log " % sys.argv[0])
         sys.exit(1)
 
     file_name = sys.argv[-1]
     mock_connection = FileReadEventsServerConnection(file_name)
     configParams = MockConfigParameters()
 
-    # run the main program
-    toasterui.main(mock_connection.connection, mock_connection.events, configParams)
+    # run the main program and set exit code to the returned value
+    sys.exit(toasterui.main(mock_connection.connection, mock_connection.events, configParams))