upstream/mercurial-mirror Files · hgext/largefiles/wirestore.py

wireproto: allow wire protocol commands to declare transport support...

wireproto: allow wire protocol commands to declare transport support Currently, wire protocol commands are exposed on all transports. Some wire protocol commands are only supported or sensical on some transports. In the future, new wire protocol commands may only be available on new transports and legacy wire protocol commands may not be available to newer transports. This commit introduces a mechanism to allow @wireprotocommand to declare transports for which they should not be available. The mechanism for determining if a wire protocol command is available for a given transport instance has been taught to take this knowledge into account. To help implement this feature, we add a dict to wireprototypes declaring all wire transports and their metadata. There's probably room to refactor the constants used to identify the wire protocols. But that can be in another commit. Differential Revision: https://phab.mercurial-scm.org/D2483

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      # Copyright 2010-2011 Fog Creek Software

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2 or any later version.

      '''largefile store working over Mercurial's wire protocol'''

      from __future__ import absolute_import

      from . import (

          lfutil,

          remotestore,

      )

      class wirestore(remotestore.remotestore):

          def __init__(self, ui, repo, remote):

              cap = remote.capable('largefiles')

              if not cap:

                  raise lfutil.storeprotonotcapable([])

              storetypes = cap.split(',')

              if 'serve' not in storetypes:

                  raise lfutil.storeprotonotcapable(storetypes)

              self.remote = remote

              super(wirestore, self).__init__(ui, repo, remote.url())

          def _put(self, hash, fd):

              return self.remote.putlfile(hash, fd)

          def _get(self, hash):

              return self.remote.getlfile(hash)

          def _stat(self, hashes):

              '''For each hash, return 0 if it is available, other values if not.

              It is usually 2 if the largefile is missing, but might be 1 the server

              has a corrupted copy.'''

              batch = self.remote.iterbatch()

              for hash in hashes:

                  batch.statlfile(hash)

              batch.submit()

              return dict(zip(hashes, batch.results()))

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				# Copyright 2010-2011 Fog Creek Software
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				'''largefile store working over Mercurial's wire protocol'''
				from __future__ import absolute_import

				from . import (
				lfutil,
				remotestore,
				)

				class wirestore(remotestore.remotestore):
				def __init__(self, ui, repo, remote):
				cap = remote.capable('largefiles')
				if not cap:
				raise lfutil.storeprotonotcapable([])
				storetypes = cap.split(',')
				if 'serve' not in storetypes:
				raise lfutil.storeprotonotcapable(storetypes)
				self.remote = remote
				super(wirestore, self).__init__(ui, repo, remote.url())

				def _put(self, hash, fd):
				return self.remote.putlfile(hash, fd)

				def _get(self, hash):
				return self.remote.getlfile(hash)

				def _stat(self, hashes):
				'''For each hash, return 0 if it is available, other values if not.
				It is usually 2 if the largefile is missing, but might be 1 the server
				has a corrupted copy.'''
				batch = self.remote.iterbatch()
				for hash in hashes:
				batch.statlfile(hash)
				batch.submit()
				return dict(zip(hashes, batch.results()))