[Toaster] [PATCH 1/2] cooker: add BuildInit event

[Elliot Smith]

In situations where a bitbake run fails before the build
properly starts and BuildStarted is fired, a UI has no way
to get at the targets passed to the build. This makes it
difficult for the UI to report on the targets which failed.

Fire a BuildInit event before running buildTargets() or
buildFile(). This enables a UI to capture targets passed to
buildTargets(), even if the build fails (e.g. the targets
themselves are invalid).

[YOCTO #8440]

Signed-off-by: Elliot Smith <elliot.smith at intel.com>
---
 bitbake/lib/bb/cooker.py | 6 ++++++
 bitbake/lib/bb/event.py  | 6 +++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/bitbake/lib/bb/cooker.py b/bitbake/lib/bb/cooker.py
index 9b565fc..2ce0215 100644
--- a/bitbake/lib/bb/cooker.py
+++ b/bitbake/lib/bb/cooker.py
@@ -1264,6 +1264,7 @@ class BBCooker:
         """
         Build the file matching regexp buildfile
         """
+        bb.event.fire(bb.event.BuildInit(), self.expanded_data)
 
         # Too many people use -b because they think it's how you normally
         # specify a target to be built, so show a warning
@@ -1367,6 +1368,11 @@ class BBCooker:
         Attempt to build the targets specified
         """
 
+        # build a list of target:task strings in format
+        # ['zlib:do_build', 'mpfr-native:do_build', ...]
+        packages = map(lambda target: "%s:do_%s" % (target, task), targets)
+        bb.event.fire(bb.event.BuildInit(packages), self.expanded_data)
+
         def buildTargetsIdle(server, rq, abort):
             msg = None
             interrupted = 0
diff --git a/bitbake/lib/bb/event.py b/bitbake/lib/bb/event.py
index 5ffe89e..8377e3e 100644
--- a/bitbake/lib/bb/event.py
+++ b/bitbake/lib/bb/event.py
@@ -373,7 +373,11 @@ class BuildBase(Event):
 
 
 
-
+class BuildInit(BuildBase):
+    """buildFile or buildTargets was invoked"""
+    def __init__(self, p=[]):
+        name = None
+        BuildBase.__init__(self, name, p)
 
 class BuildStarted(BuildBase, OperationStarted):
     """bbmake build run started"""
-- 
1.9.3

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