upstream/mercurial-mirror Files · tests/testlib/ext-sidedata-2.py

sidedata-exchange: rewrite sidedata on-the-fly whenever possible...

sidedata-exchange: rewrite sidedata on-the-fly whenever possible When a A exchanges with B, the difference of their supported sidedata categories is made, and the responsibility is always with the client to generated it: - If A pushes to B and B requires category `foo` that A does not have, A will need to generate it when sending it to B. - If A pulls from B and A needs category `foo`, it will generate `foo` before the end of the transaction. - Any category that is not required is removed. If peers are not compatible, abort. It is forbidden to rewrite sidedata for a rev that already has sidedata, since that would introduce unreachable (garbage) data in the data file, something we're not prepared for yet. Differential Revision: https://phab.mercurial-scm.org/D10032

Raphaël Gomès - - Load All Authors

File last commit:

r47452:ba8e508a default


                r47452:ba8e508a

default

Download file

             ext-sidedata-2.py
        
                    50 lines
            
             | 1.5 KiB
            
                | text/x-python
            
             |
                PythonLexer
            
             / tests / testlib / ext-sidedata-2.py
          
                    History
                
                 |
                  Annotation
                 | Raw
                 |Copy content
                 |Copy permalink

      # coding: utf8

      # ext-sidedata-2.py - small extension to test (differently) the sidedata logic

      #

      # Simulates a client for a complex sidedata exchange.

      #

      # Copyright 2021 Raphaël Gomès <rgomes@octobus.net>

      #

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

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

      from __future__ import absolute_import

      import hashlib

      import struct

      from mercurial.revlogutils import sidedata as sidedatamod

      def compute_sidedata_1(repo, revlog, rev, sidedata, text=None):

          sidedata = sidedata.copy()

          if text is None:

              text = revlog.revision(rev)

          sidedata[sidedatamod.SD_TEST1] = struct.pack('>I', len(text))

          return sidedata

      def compute_sidedata_2(repo, revlog, rev, sidedata, text=None):

          sidedata = sidedata.copy()

          if text is None:

              text = revlog.revision(rev)

          sha256 = hashlib.sha256(text).digest()

          sidedata[sidedatamod.SD_TEST2] = struct.pack('>32s', sha256)

          return sidedata

      def reposetup(ui, repo):

          # Sidedata keys happen to be the same as the categories, easier for testing.

          for kind in (b'changelog', b'manifest', b'filelog'):

              repo.register_sidedata_computer(

                  kind,

                  sidedatamod.SD_TEST1,

                  (sidedatamod.SD_TEST1,),

                  compute_sidedata_1,

              )

              repo.register_sidedata_computer(

                  kind,

                  sidedatamod.SD_TEST2,

                  (sidedatamod.SD_TEST2,),

                  compute_sidedata_2,

              )

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

				# coding: utf8
				# ext-sidedata-2.py - small extension to test (differently) the sidedata logic
				#
				# Simulates a client for a complex sidedata exchange.
				#
				# Copyright 2021 Raphaël Gomès <rgomes@octobus.net>
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				from __future__ import absolute_import

				import hashlib
				import struct

				from mercurial.revlogutils import sidedata as sidedatamod


				def compute_sidedata_1(repo, revlog, rev, sidedata, text=None):
				sidedata = sidedata.copy()
				if text is None:
				text = revlog.revision(rev)
				sidedata[sidedatamod.SD_TEST1] = struct.pack('>I', len(text))
				return sidedata


				def compute_sidedata_2(repo, revlog, rev, sidedata, text=None):
				sidedata = sidedata.copy()
				if text is None:
				text = revlog.revision(rev)
				sha256 = hashlib.sha256(text).digest()
				sidedata[sidedatamod.SD_TEST2] = struct.pack('>32s', sha256)
				return sidedata


				def reposetup(ui, repo):
				# Sidedata keys happen to be the same as the categories, easier for testing.
				for kind in (b'changelog', b'manifest', b'filelog'):
				repo.register_sidedata_computer(
				kind,
				sidedatamod.SD_TEST1,
				(sidedatamod.SD_TEST1,),
				compute_sidedata_1,
				)
				repo.register_sidedata_computer(
				kind,
				sidedatamod.SD_TEST2,
				(sidedatamod.SD_TEST2,),
				compute_sidedata_2,
				)