Re: [Xen-devel] [PATCH OSSTEST] get_hostflags: return an empty list when there is no flight/job.

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Fri, 2015-07-31 at 16:31 +0100, Ian Jackson wrote:
> Ian Campbell writes ("[PATCH OSSTEST] get_hostflags: return an empty list 
> when there is no flight/job."):
> > From: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
> > 
> > Otherwise trying to use mg-hosts mkpxedir fails with:
> 
> I think your proposed fix is incorrect.  It is wrong to call
> get_hostflags outside the context of a job, because get_hostflags is
> supposed to return the job's host flags for that ident.
> 
> The bug was introduced by me in 11e788f7 "JobDB/Executive: Improve an
> internal `die' error", where a refactoring meant that we always call
> get_hostflags.
> 
> How about this instead ?
> 
> diff --git a/Osstest/JobDB/Executive.pm b/Osstest/JobDB/Executive.pm
> index 1ec947e..cc52f57 100644
> --- a/Osstest/JobDB/Executive.pm
> +++ b/Osstest/JobDB/Executive.pm
> @@ -128,7 +128,7 @@ sub host_check_allocated ($$) { #method
>          $ho->{Shared} &&
>          $ho->{Shared}{State} eq 'ready';
>      my $harness = get_harness_rev();
> -    my @flags = get_hostflags($ho->{Ident});
> +    my @flags = defined($job) ? get_hostflags($ho->{Ident}) : qw(OUTSIDE
> -JOB);
>      $ho->{SharedReady}=
>       $ho->{SharedMaybeOthers} &&
>          !! (grep { $_." ".$harness eq "share-".$ho->{Shared}{Type} }
> 
> Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>

LGTM, I suppose the use of the OUTSIDE-JOB sentinel value is just for the
benefit of the reader of the following die() should it occur.

Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>

Ian.

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