knotty: Handle process indicators more gracefully

Mistakes can happen with the generation of the progress events, change
knotty to be more tolerant of this rather than crashing, reporting to the
user when something unexpected happens. I haven't debugged why multiple
finish events appear to be triggered.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/lib/bb/ui/knotty.py b/lib/bb/ui/knotty.py
index dbcb9c417b0cbbb715e8faffdc41f1ee44a98eb2..e8e169fe679b032f68812e24830f5f5d7ae26cb5 100644 (file)
--- a/lib/bb/ui/knotty.py
+++ b/lib/bb/ui/knotty.py
@@ -496,13 +496,16 @@ def main(server, eventHandler, params, tf = TerminalFilter):
                 parseprogress = new_progress("Parsing recipes", event.total).start()
                 continue
             if isinstance(event, bb.event.ParseProgress):
-                parseprogress.update(event.current)
+                if parseprogress:
+                    parseprogress.update(event.current)
+                else:
+                    bb.warn("Got ParseProgress event for parsing that never started?")
                 continue
             if isinstance(event, bb.event.ParseCompleted):
                 if not parseprogress:
                     continue
-
                 parseprogress.finish()
+                pasreprogress = None
                 if not params.options.quiet:
                     print(("Parsing of %d .bb files complete (%d cached, %d parsed). %d targets, %d skipped, %d masked, %d errors."
                         % ( event.total, event.cached, event.parsed, event.virtuals, event.skipped, event.masked, event.errors)))
@@ -606,10 +609,15 @@ def main(server, eventHandler, params, tf = TerminalFilter):
                 parseprogress.start(False)
                 continue
             if isinstance(event, bb.event.ProcessProgress):
-                parseprogress.update(event.progress)
+                if parseprogress:
+                    parseprogress.update(event.progress)
+                else:
+                    bb.warn("Got ProcessProgress event for someting that never started?")
                 continue
             if isinstance(event, bb.event.ProcessFinished):
-                parseprogress.finish()
+                if parseprogress:
+                    parseprogress.finish()
+                parseprogress = None
                 continue
 
             # ignore