[gnome-continuous-yocto/gnomeostree-3.22-krogoth: 147/246] bitbake: event.py: output errors and warnings to stderr

[Emmanuele Bassi <ebassi src gnome org>]

commit 2de121703d11809d02815e6434674c7ec5e5704c
Author: Ed Bartosh <ed bartosh linux intel com>
Date:   Thu Sep 8 14:02:33 2016 +0300

    bitbake: event.py: output errors and warnings to stderr
    
    All logging messages are printed on stdout when processing
    UI event queue. This makes it impossible to distinguish between
    errors and normal bitbake output. Output to stderror or stdout
    depending on log level should fix this.
    
    (Bitbake rev: c4029c4f00197804511fc71e1190d34eb120212a)
    
    Signed-off-by: Ed Bartosh <ed bartosh linux intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 bitbake/lib/bb/event.py |   13 ++++++++++---
 1 files changed, 10 insertions(+), 3 deletions(-)
---
diff --git a/bitbake/lib/bb/event.py b/bitbake/lib/bb/event.py
index 5ffe89e..2cac074 100644
--- a/bitbake/lib/bb/event.py
+++ b/bitbake/lib/bb/event.py
@@ -117,21 +117,28 @@ def print_ui_queue():
     logger = logging.getLogger("BitBake")
     if not _uiready:
         from bb.msg import BBLogFormatter
-        console = logging.StreamHandler(sys.stdout)
-        console.setFormatter(BBLogFormatter("%(levelname)s: %(message)s"))
-        logger.handlers = [console]
+        stdout = logging.StreamHandler(sys.stdout)
+        stderr = logging.StreamHandler(sys.stderr)
+        formatter = BBLogFormatter("%(levelname)s: %(message)s")
+        stdout.setFormatter(formatter)
+        stderr.setFormatter(formatter)
 
         # First check to see if we have any proper messages
         msgprint = False
         for event in ui_queue:
             if isinstance(event, logging.LogRecord):
                 if event.levelno > logging.DEBUG:
+                    if event.levelno >= logging.WARNING:
+                        logger.handlers = [stderr]
+                    else:
+                        logger.handlers = [stdout]
                     logger.handle(event)
                     msgprint = True
         if msgprint:
             return
 
         # Nope, so just print all of the messages we have (including debug messages)
+        logger.handlers = [stdout]
         for event in ui_queue:
             if isinstance(event, logging.LogRecord):
                 logger.handle(event)