[OE-core] [PATCH] devtool: remove duplicate overrides

[Paul Eggleton]

As Peter mentions the underlying issue is already mitigated when we read the value of 
DEVTOOL_EXTRA_OVERRIDES; for clarity I'd say let's revert this 
(90f667db2219f04e6d61588cd61056d3d8da6d7d). My apologies, I wasn't
paying attention earlier.

Cheers,
Paul

On Wednesday, 23 January 2019 12:32:35 PM NZDT Peter Kjellerstedt wrote:
> This has already been merged, but see below.
> 
> > -----Original Message-----
> > From: openembedded-core-bounces at lists.openembedded.org <openembedded-
> > core-bounces at lists.openembedded.org> On Behalf Of Dan Dedrick
> > Sent: den 21 januari 2019 17:05
> > To: openembedded-core at lists.openembedded.org
> > Subject: [OE-core] [PATCH] devtool: remove duplicate overrides
> > 
> > DEVTOOL_EXTRA_OVERRIDES only needs one entry for each instance of
> > overrides. Previous to these changes it would find every override to
> > SRC_URI and add it to the list. This would duplicate instances where
> > SRC_URI is modified multiple times with the same override like:
> > SRC_URI_append_foo += "file://0001-foo.patch"
> > SRC_URI_append_foo += "file://0002-bar.patch"
> > 
> > A bbappend might also overwrite a SRC_URI override, which would also
> > cause multiple instances to occur.
> > 
> > When there are multiple instances of the same override in
> > DEVTOOL_EXTRA_OVERRIDES it causes devtool modify to fail when creating
> > override branches. The failure occurs when attempting to create the same
> > override branch a second time and looks like this:
> > 
> > The stack trace of python calls that resulted in this exception/failure was:
> > File: 'exec_python_func() autogenerated', lineno: 2, function: <module>
> >      0001:
> >  *** 0002:devtool_post_patch(d)
> >      0003:
> > File: '/build/poky/meta/classes/devtool-source.bbclass', lineno: 202, function: devtool_post_patch
> >      0198:
> >      0199:        for override in extra_override_list:
> 
> The reference to extra_override_list above indicates that you developed 
> this patch for an older version of OE-Core, since that variable was 
> renamed on master of OE-Core in October when this problem was fixed (see 
> commit 95a92195). However, that fix was made to devtool-source.bbclass, 
> where it uses the value of DEVTOOL_EXTRA_OVERRIDES, instead of to 
> scripts/lib/devtool/standard.py where you made the change. This is 
> probably why you did not notice that the problem had already been fixed.
> 
> >      0200:            localdata = bb.data.createCopy(d)
> >      0201:            if override in default_overrides:
> >  *** 0202:                bb.process.run('git branch devtool-override-%s %s' % (override, devbranch), cwd=srcsubdir)
> >      0203:            else:
> >      0204:                # Reset back to the initial commit on a new branch
> >      0205:                bb.process.run('git checkout %s -b devtool-override-%s' % (initial_rev, override), cwd=srcsubdir)
> >      0206:                # Run do_patch function with the override applied
> > File: '/build/poky/bitbake/lib/bb/process.py', lineno: 178, function: run
> >      0174:        if not stderr is None:
> >      0175:            stderr = stderr.decode("utf-8")
> >      0176:
> >      0177:    if pipe.returncode != 0:
> >  *** 0178:        raise ExecutionError(cmd, pipe.returncode, stdout, stderr)
> >      0179:    return stdout, stderr
> > Exception: bb.process.ExecutionError: Execution of 'git branch devtool-override-foo devtool' failed with exit code 128:
> > fatal: A branch named 'devtool-override-foo' already exists.
> > 
> > Signed-off-by: Dan Dedrick <ddedrick at lexmark.com>
> > ---
> >  scripts/lib/devtool/standard.py | 5 +++++
> >  1 file changed, 5 insertions(+)
> > 
> > diff --git a/scripts/lib/devtool/standard.py b/scripts/lib/devtool/standard.py
> > index d14b7a6543..a45ad36812 100644
> > --- a/scripts/lib/devtool/standard.py
> > +++ b/scripts/lib/devtool/standard.py
> > @@ -509,6 +509,11 @@ def _extract_source(srctree, keep_temp, devbranch, sync, config, basepath, works
> >              if not 'flag' in event:
> >                  if event['op'].startswith(('_append[', '_prepend[')):
> > 
> > extra_overrides.append(event['op'].split('[')[1].split(']')[0])
> > +        # We want to remove duplicate overrides. If a recipe had multiple
> > +        # SRC_URI_override += values it would cause mulitple instances of
> > +        # overrides. This doesn't play nicely with things like creating a
> > +        # branch for every instance of DEVTOOL_EXTRA_OVERRIDES.
> > +        extra_overrides = list(set(extra_overrides))
> >          if extra_overrides:
> >              logger.info('SRC_URI contains some conditional appends/prepends - will create branches to represent these')
> > 
> > --
> > 2.20.1
> 
> //Peter
> 
> 


-- 

Paul Eggleton
Intel Open Source Technology Centre