[PATCH 5/n] pwclient: allow multiple IDs

Keller, Jacob E jacob.e.keller at intel.com
Sat Aug 30 01:11:34 EST 2014


On Fri, 2014-08-29 at 11:07 +0200, Bernhard Reutner-Fischer wrote:
> Allow commands that take an ID to operate on multiple IDs.
> E.g.:
> update -s Superseded 1 2 3 4 5
> apply 2 4 6
> 
> Reject update -c COMMIT-REF on multiple IDs though as that does not
> make sense.
> 
> Implementation note:
> nargs='*' instead of '?' results in (wrong/inconvenient):
> mutually exclusive arguments must be optional
> So remove mutual exclusive handling via argparse and instead do it by
> hand. This might be implemented more conveniently in later python but we
> (have to) stick with 2.7.x for the time being.
> 
> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop at gmail.com>
> ---
>  apps/patchwork/bin/pwclient | 60 +++++++++++++++++++++++++--------------------
>  1 file changed, 34 insertions(+), 26 deletions(-)
> 
> diff --git a/apps/patchwork/bin/pwclient b/apps/patchwork/bin/pwclient
> index a7afafc..bd79b3a 100755
> --- a/apps/patchwork/bin/pwclient
> +++ b/apps/patchwork/bin/pwclient
> @@ -331,13 +331,12 @@ class _RecursiveHelpAction(argparse._HelpAction):
>  
>  def main():
>      hash_parser = argparse.ArgumentParser(add_help=False, version=False)
> -    hash_parser_x = hash_parser.add_mutually_exclusive_group(required=True)
> -    hash_parser_x.add_argument(
> +    hash_parser.add_argument(
>          '-h', metavar='HASH', dest='hash', action='store', required=False,
>          help='''Lookup by patch hash'''
>      )
> -    hash_parser_x.add_argument(
> -        'id', metavar='ID', nargs='?', action='store', type=int,
> +    hash_parser.add_argument(
> +        'id', metavar='ID', nargs='*', action='store', type=int,
>          help='Patch ID',
>      )
>  
> @@ -377,7 +376,7 @@ def main():
>          add_help=False,
>          version=False,
>          formatter_class=argparse.RawDescriptionHelpFormatter,
> -        epilog='''(apply | get | info | view | update) (-h HASH | ID)''',
> +        epilog='''(apply | get | info | view | update) (-h HASH | ID [ID ...])''',
>      )
>      action_parser.add_argument(
>          '--help',
> @@ -440,7 +439,8 @@ def main():
>      update_parser = subparsers.add_parser(
>          'update', parents=[hash_parser],
>          add_help=False,
> -        help='''Update patch'''
> +        help='''Update patch''',
> +        epilog='''Using a COMMIT-REF allows for only one ID to be specified''',
>      )
>      update_parser.set_defaults(subcmd='update')
>      update_parser.add_argument(
> @@ -475,6 +475,12 @@ def main():
>      args = action_parser.parse_args()
>      args=dict(vars(args))
>  
> +    if args.get('hash') and len(args.get('id')):
> +        # mimic mutual exclusive group
> +        sys.stderr.write("[-h HASH] and [ID [ID ...]] are mutually exlusive!\n")
> +        action_parser.print_help()
> +        sys.exit(1)
> +
>      # set defaults
>      filt = Filter()
>      submitter_str = ""
> @@ -484,7 +490,7 @@ def main():
>      state_str = ""
>      hash_str = None
>      msgid_str = ""
> -    id_str = None
> +    patch_ids = None
>      url = DEFAULT_URL
>  
>      action = args.get('subcmd')
> @@ -497,12 +503,17 @@ def main():
>          submitter_str = args.get('w')
>      if args.get('d'):
>          delegate_str = args.get('d')
> -    if args.get('c'):
> -        commit_str = args.get('c')
>      if args.get('hash'):
>          hash_str = args.get('hash')
>      if args.get('id'):
> -        id_str = args.get('id')
> +        patch_ids = frozenset(args.get('id'))
> +    if args.get('c'):
> +        # update multiple IDs with a single commit-hash does not make sense
> +        if action == 'update' and patch_ids and len(patch_ids) > 1:
> +            sys.stderr.write("Declining update with COMMIT-REF on multiple IDs\n")
> +            update_parser.print_help()
> +            sys.exit(1)
> +        commit_str = args.get('c')
>      if args.get('m'):
>          msgid_str = args.get('m')
>      if args.get('n') != None:
> @@ -603,13 +614,9 @@ def main():
>          sys.stderr.write("Unable to connect to %s\n" % url)
>          sys.exit(1)
>  
> -    patch_id = None
> -    # hash_str and id_str are mutually exclusive
> -    if hash_str:
> -        patch_id = patch_id_from_hash(rpc, project_str, hash_str)
> -    else:
> -        # id_str from argparse is an int
> -        patch_id = id_str
> +    # It should be safe to assume hash_str is not zero, but who knows..
> +    if hash_str != None:
> +        patch_ids = [patch_id_from_hash(rpc, project_str, hash_str)]
>  
>      if action == 'list' or action == 'search':
>          if args.get('patch_name') != None:
> @@ -623,28 +630,29 @@ def main():
>          action_states(rpc)
>  
>      elif action == 'view':
> -        s = rpc.patch_get_mbox(patch_id)
> -        if len(s) > 0:
> -            print unicode(s).encode("utf-8")
> +        for patch_id in patch_ids:
> +            s = rpc.patch_get_mbox(patch_id)
> +            if len(s) > 0:
> +                print unicode(s).encode("utf-8")
>  
>      elif action in ('get', 'save', 'info'):
>          if action == 'info':
> -            action_info(rpc, patch_id)
> +            [action_info(rpc, patch_id) for patch_id in patch_ids]
>          else:
> -            action_get(rpc, patch_id)
> +            [action_get(rpc, patch_id) for patch_id in patch_ids]
>  
>      elif action == 'apply':
> -        action_apply(rpc, patch_id)
> +        [action_apply(rpc, patch_id) for patch_id in patch_ids]
>  
>      elif action == 'git-am':
>          cmd = ['git', 'am']
>          if do_signoff:
>              cmd.append('-s')
> -        action_apply(rpc, patch_id, cmd)
> +        [action_apply(rpc, patch_id, cmd) for patch_id in patch_ids]
>  
>      elif action == 'update':
> -        action_update_patch(rpc, patch_id, state = state_str,
> -                commit = commit_str)
> +        [action_update_patch(rpc, patch_id, state = state_str,
> +                commit = commit_str) for patch_id in patch_ids]
>  

Since you aren't saving the array that you generate here, wouldn't it
make more sense to just do:

for patch_id in patch_ids:
	action_update_patch(rpc, patch_id, state = state_str,
		commit = commit_str )


?

I don't see why you bother to actually create the array, (obviously you
can't just use a generator expression since that won't be evaluated. I
don't think you need to worry about catching the whole array here either
if I understand correctly.

I am not sure if Python will be smart enough to avoid creating the array
in this case, though it probably doesn't really hurt anything...

Obviously this applies to all the actions you converted to arrays...

Thanks,
Jake

>      else:
>          sys.stderr.write("Unknown action '%s'\n" % action)




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