comparison mercurial/help/internals/wireprotocolv2.txt @ 39813:c30faea8d02d

wireprotov2: advertise set of valid values for requestable fields

changesetdata, manifestdata, and filedata all allow the caller to
specify what data fields to request.

Data fields are extensible and may evolve over time. In order to
prevent clients from making requests for fields that are not
available, the client needs to know what fields are available.

This commit teaches the server to declare a set of "valid values"
for wire protocol command arguments. That set of values is exposed
in the command's capabilities descriptor. The changesetdata,
manifestdata, and filedata commands all declare their set of
available "fields."

Differential Revision: https://phab.mercurial-scm.org/D4619

39812:8e7e822e85ec

            (boolean) Whether the argument must be specified. Failure to send
            required arguments will result in an error executing the command.

         type
            (bytestring) The type of the argument. e.g. ``bytes`` or ``bool``.

      permissions
         An array of permissions required to execute this command.

compression

39813:c30faea8d02d

            (boolean) Whether the argument must be specified. Failure to send
            required arguments will result in an error executing the command.

         type
            (bytestring) The type of the argument. e.g. ``bytes`` or ``bool``.

         validvalues
            (set) Values that are recognized for this argument. Some arguments
            only allow a fixed set of values to be specified. These arguments
            may advertise that set in this key. If this set is advertised and
            a value not in this set is specified, the command should result
            in error.

      permissions
         An array of permissions required to execute this command.

compression