Mercurial > hg
view tests/flagprocessorext.py @ 50706:0452af304808
stream-clone: add a v3 version of the protocol
This new version is less rigid regarding the extract number of files and number
of bytes to be actually transfered, it also lays the groundwork for other
improvements.
The format stays experimental, but this is an interesting base to build upon.
author | Arseniy Alekseyev <aalekseyev@janestreet.com> |
---|---|
date | Thu, 01 Jun 2023 17:39:22 +0100 |
parents | 6000f5b25c9b |
children |
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# coding=UTF-8 import base64 import zlib from mercurial import ( bundlecaches, changegroup, extensions, revlog, util, ) from mercurial.revlogutils import flagutil from mercurial.interfaces import repository # Test only: These flags are defined here only in the context of testing the # behavior of the flag processor. The canonical way to add flags is to get in # touch with the community and make them known in revlog. REVIDX_NOOP = 1 << 3 REVIDX_BASE64 = 1 << 2 REVIDX_GZIP = 1 << 1 REVIDX_FAIL = 1 def validatehash(self, text): return True def bypass(self, text): return False def noopdonothing(self, text): return (text, True) def noopdonothingread(self, text): return (text, True) def b64encode(self, text): return (base64.b64encode(text), False) def b64decode(self, text): return (base64.b64decode(text), True) def gzipcompress(self, text): return (zlib.compress(text), False) def gzipdecompress(self, text): return (zlib.decompress(text), True) def supportedoutgoingversions(orig, repo): versions = orig(repo) versions.discard(b'01') versions.discard(b'02') versions.add(b'03') return versions def allsupportedversions(orig, ui): versions = orig(ui) versions.add(b'03') return versions def makewrappedfile(obj): class wrappedfile(obj.__class__): def addrevision( self, text, transaction, link, p1, p2, cachedelta=None, node=None, flags=flagutil.REVIDX_DEFAULT_FLAGS, ): if b'[NOOP]' in text: flags |= REVIDX_NOOP if b'[BASE64]' in text: flags |= REVIDX_BASE64 if b'[GZIP]' in text: flags |= REVIDX_GZIP # This addrevision wrapper is meant to add a flag we will not have # transforms registered for, ensuring we handle this error case. if b'[FAIL]' in text: flags |= REVIDX_FAIL return super(wrappedfile, self).addrevision( text, transaction, link, p1, p2, cachedelta=cachedelta, node=node, flags=flags, ) obj.__class__ = wrappedfile def reposetup(ui, repo): class wrappingflagprocessorrepo(repo.__class__): def file(self, f): orig = super(wrappingflagprocessorrepo, self).file(f) makewrappedfile(orig) return orig repo.__class__ = wrappingflagprocessorrepo def extsetup(ui): # Enable changegroup3 for flags to be sent over the wire wrapfunction = extensions.wrapfunction wrapfunction( changegroup, 'supportedoutgoingversions', supportedoutgoingversions ) wrapfunction(changegroup, 'allsupportedversions', allsupportedversions) # Teach revlog about our test flags flags = [REVIDX_NOOP, REVIDX_BASE64, REVIDX_GZIP, REVIDX_FAIL] flagutil.REVIDX_KNOWN_FLAGS |= util.bitsfrom(flags) repository.REVISION_FLAGS_KNOWN |= util.bitsfrom(flags) revlog.REVIDX_FLAGS_ORDER.extend(flags) # Teach exchange to use changegroup 3 for k in bundlecaches._bundlespeccontentopts.keys(): bundlecaches._bundlespeccontentopts[k][b"cg.version"] = b"03" # Register flag processors for each extension flagutil.addflagprocessor( REVIDX_NOOP, ( noopdonothingread, noopdonothing, validatehash, ), ) flagutil.addflagprocessor( REVIDX_BASE64, ( b64decode, b64encode, bypass, ), ) flagutil.addflagprocessor( REVIDX_GZIP, (gzipdecompress, gzipcompress, bypass) )