Mercurial > hg
view tests/test-remotefilelog-datapack.py @ 48598:a6f16ec07ed7
stream-clone: add a explicit test for format change during stream clone
They are different kind of requirements, the one which impact the data storage
and are relevant to the files being streamed and the one which does not. For
example some requirements are only relevant to the working copy, like sparse, or
dirstate-v2.
Since they are irrelevant to the content being streamed, they do not prevent the
receiving side to use streaming clone and mercurial skip adverting them over
the wire and, ideally, within the bundle.
In addition, this let the client decide to use whichever format it desire for
the part that does not affect the store itself. So the configuration related to
these format are used as normal when doing a streaming clone.
In practice, the feature was not really tested and is badly broken with bundle-2,
since the requirements are not filtered out from the stream bundle.
So we start with adding simple tests as a good base before the fix and adjust
the feature.
Differential Revision: https://phab.mercurial-scm.org/D12029
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Mon, 17 Jan 2022 18:51:47 +0100 |
parents | 23f5ed6dbcb1 |
children | 6000f5b25c9b |
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#!/usr/bin/env python from __future__ import absolute_import, print_function import hashlib import os import random import shutil import stat import struct import sys import tempfile import time import unittest import silenttestrunner # Load the local remotefilelog, not the system one sys.path[0:0] = [os.path.join(os.path.dirname(__file__), '..')] from mercurial.node import sha1nodeconstants from mercurial import policy if not policy._packageprefs.get(policy.policy, (False, False))[1]: if __name__ == '__main__': msg = "skipped: pure module not available with module policy:" print(msg, policy.policy, file=sys.stderr) sys.exit(80) from mercurial import ( pycompat, ui as uimod, ) from hgext.remotefilelog import ( basepack, constants, datapack, ) class datapacktestsbase(object): def __init__(self, datapackreader, paramsavailable): self.datapackreader = datapackreader self.paramsavailable = paramsavailable def setUp(self): self.tempdirs = [] def tearDown(self): for d in self.tempdirs: shutil.rmtree(d) def makeTempDir(self): tempdir = pycompat.bytestr(tempfile.mkdtemp()) self.tempdirs.append(tempdir) return tempdir def getHash(self, content): return hashlib.sha1(content).digest() def getFakeHash(self): return b''.join( pycompat.bytechr(random.randint(0, 255)) for _ in range(20) ) def createPack(self, revisions=None, packdir=None): if revisions is None: revisions = [ ( b"filename", self.getFakeHash(), sha1nodeconstants.nullid, b"content", ) ] if packdir is None: packdir = self.makeTempDir() packer = datapack.mutabledatapack(uimod.ui(), packdir, version=2) for args in revisions: filename, node, base, content = args[0:4] # meta is optional meta = None if len(args) > 4: meta = args[4] packer.add(filename, node, base, content, metadata=meta) path = packer.close() return self.datapackreader(path) def _testAddSingle(self, content): """Test putting a simple blob into a pack and reading it out.""" filename = b"foo" node = self.getHash(content) revisions = [(filename, node, sha1nodeconstants.nullid, content)] pack = self.createPack(revisions) if self.paramsavailable: self.assertEqual( pack.params.fanoutprefix, basepack.SMALLFANOUTPREFIX ) chain = pack.getdeltachain(filename, node) self.assertEqual(content, chain[0][4]) def testAddSingle(self): self._testAddSingle(b'') def testAddSingleEmpty(self): self._testAddSingle(b'abcdef') def testAddMultiple(self): """Test putting multiple unrelated blobs into a pack and reading them out. """ revisions = [] for i in range(10): filename = b"foo%d" % i content = b"abcdef%d" % i node = self.getHash(content) revisions.append((filename, node, self.getFakeHash(), content)) pack = self.createPack(revisions) for filename, node, base, content in revisions: entry = pack.getdelta(filename, node) self.assertEqual((content, filename, base, {}), entry) chain = pack.getdeltachain(filename, node) self.assertEqual(content, chain[0][4]) def testAddDeltas(self): """Test putting multiple delta blobs into a pack and read the chain.""" revisions = [] filename = b"foo" lastnode = sha1nodeconstants.nullid for i in range(10): content = b"abcdef%d" % i node = self.getHash(content) revisions.append((filename, node, lastnode, content)) lastnode = node pack = self.createPack(revisions) entry = pack.getdelta(filename, revisions[0][1]) realvalue = (revisions[0][3], filename, revisions[0][2], {}) self.assertEqual(entry, realvalue) # Test that the chain for the final entry has all the others chain = pack.getdeltachain(filename, node) for i in range(10): content = b"abcdef%d" % i self.assertEqual(content, chain[-i - 1][4]) def testPackMany(self): """Pack many related and unrelated objects.""" # Build a random pack file revisions = [] blobs = {} random.seed(0) for i in range(100): filename = b"filename-%d" % i filerevs = [] for j in range(random.randint(1, 100)): content = b"content-%d" % j node = self.getHash(content) lastnode = sha1nodeconstants.nullid if len(filerevs) > 0: lastnode = filerevs[random.randint(0, len(filerevs) - 1)] filerevs.append(node) blobs[(filename, node, lastnode)] = content revisions.append((filename, node, lastnode, content)) pack = self.createPack(revisions) # Verify the pack contents for (filename, node, lastnode), content in sorted(blobs.items()): chain = pack.getdeltachain(filename, node) for entry in chain: expectedcontent = blobs[(entry[0], entry[1], entry[3])] self.assertEqual(entry[4], expectedcontent) def testPackMetadata(self): revisions = [] for i in range(100): filename = b'%d.txt' % i content = b'put-something-here \n' * i node = self.getHash(content) meta = { constants.METAKEYFLAG: i ** 4, constants.METAKEYSIZE: len(content), b'Z': b'random_string', b'_': b'\0' * i, } revisions.append( (filename, node, sha1nodeconstants.nullid, content, meta) ) pack = self.createPack(revisions) for name, node, x, content, origmeta in revisions: parsedmeta = pack.getmeta(name, node) # flag == 0 should be optimized out if origmeta[constants.METAKEYFLAG] == 0: del origmeta[constants.METAKEYFLAG] self.assertEqual(parsedmeta, origmeta) def testGetMissing(self): """Test the getmissing() api.""" revisions = [] filename = b"foo" lastnode = sha1nodeconstants.nullid for i in range(10): content = b"abcdef%d" % i node = self.getHash(content) revisions.append((filename, node, lastnode, content)) lastnode = node pack = self.createPack(revisions) missing = pack.getmissing([(b"foo", revisions[0][1])]) self.assertFalse(missing) missing = pack.getmissing( [(b"foo", revisions[0][1]), (b"foo", revisions[1][1])] ) self.assertFalse(missing) fakenode = self.getFakeHash() missing = pack.getmissing( [(b"foo", revisions[0][1]), (b"foo", fakenode)] ) self.assertEqual(missing, [(b"foo", fakenode)]) def testAddThrows(self): pack = self.createPack() try: pack.add(b'filename', sha1nodeconstants.nullid, b'contents') self.assertTrue(False, "datapack.add should throw") except RuntimeError: pass def testBadVersionThrows(self): pack = self.createPack() path = pack.path + b'.datapack' with open(path, 'rb') as f: raw = f.read() raw = struct.pack('!B', 255) + raw[1:] os.chmod(path, os.stat(path).st_mode | stat.S_IWRITE) with open(path, 'wb+') as f: f.write(raw) try: self.datapackreader(pack.path) self.assertTrue(False, "bad version number should have thrown") except RuntimeError: pass def testMissingDeltabase(self): fakenode = self.getFakeHash() revisions = [(b"filename", fakenode, self.getFakeHash(), b"content")] pack = self.createPack(revisions) chain = pack.getdeltachain(b"filename", fakenode) self.assertEqual(len(chain), 1) def testLargePack(self): """Test creating and reading from a large pack with over X entries. This causes it to use a 2^16 fanout table instead.""" revisions = [] blobs = {} total = basepack.SMALLFANOUTCUTOFF + 1 for i in pycompat.xrange(total): filename = b"filename-%d" % i content = filename node = self.getHash(content) blobs[(filename, node)] = content revisions.append( (filename, node, sha1nodeconstants.nullid, content) ) pack = self.createPack(revisions) if self.paramsavailable: self.assertEqual( pack.params.fanoutprefix, basepack.LARGEFANOUTPREFIX ) for (filename, node), content in blobs.items(): actualcontent = pack.getdeltachain(filename, node)[0][4] self.assertEqual(actualcontent, content) def testPacksCache(self): """Test that we remember the most recent packs while fetching the delta chain.""" packdir = self.makeTempDir() deltachains = [] numpacks = 10 revisionsperpack = 100 for i in range(numpacks): chain = [] revision = ( b'%d' % i, self.getFakeHash(), sha1nodeconstants.nullid, b"content", ) for _ in range(revisionsperpack): chain.append(revision) revision = ( b'%d' % i, self.getFakeHash(), revision[1], self.getFakeHash(), ) self.createPack(chain, packdir) deltachains.append(chain) class testdatapackstore(datapack.datapackstore): # Ensures that we are not keeping everything in the cache. DEFAULTCACHESIZE = numpacks // 2 store = testdatapackstore(uimod.ui(), packdir) random.shuffle(deltachains) for randomchain in deltachains: revision = random.choice(randomchain) chain = store.getdeltachain(revision[0], revision[1]) mostrecentpack = next(iter(store.packs), None) self.assertEqual( mostrecentpack.getdeltachain(revision[0], revision[1]), chain ) self.assertEqual(randomchain.index(revision) + 1, len(chain)) # perf test off by default since it's slow def _testIndexPerf(self): random.seed(0) print("Multi-get perf test") packsizes = [ 100, 10000, 100000, 500000, 1000000, 3000000, ] lookupsizes = [ 10, 100, 1000, 10000, 100000, 1000000, ] for packsize in packsizes: revisions = [] for i in pycompat.xrange(packsize): filename = b"filename-%d" % i content = b"content-%d" % i node = self.getHash(content) revisions.append( (filename, node, sha1nodeconstants.nullid, content) ) path = self.createPack(revisions).path # Perf of large multi-get import gc gc.disable() pack = self.datapackreader(path) for lookupsize in lookupsizes: if lookupsize > packsize: continue random.shuffle(revisions) findnodes = [(rev[0], rev[1]) for rev in revisions] start = time.time() pack.getmissing(findnodes[:lookupsize]) elapsed = time.time() - start print( "%s pack %d lookups = %0.04f" % ( ('%d' % packsize).rjust(7), ('%d' % lookupsize).rjust(7), elapsed, ) ) print("") gc.enable() # The perf test is meant to produce output, so we always fail the test # so the user sees the output. raise RuntimeError("perf test always fails") class datapacktests(datapacktestsbase, unittest.TestCase): def __init__(self, *args, **kwargs): datapacktestsbase.__init__(self, datapack.datapack, True) unittest.TestCase.__init__(self, *args, **kwargs) # TODO: # datapack store: # - getmissing # - GC two packs into one if __name__ == '__main__': if pycompat.iswindows: sys.exit(80) # Skip on Windows silenttestrunner.main(__name__)