Mercurial > hg
view tests/test-remotefilelog-datapack.py @ 40924:08cfa77d7288
wireprotov2: unify file revision collection and linknode derivation
The old mechanism for choosing which file revisions to send in the
haveparents=True case was buggy in multiple ways - the most severe
of which being that file revisions were excluded when they shouldn't
have been.
This commit unifies the logic for deriving the filenodes that will
be sent by the "filesdata" command. We now consistently read files
data from manifests. The "haveparents" argument now controls whether
we iterate ctx.files() or use the full manifest to derive relevant
files.
The logic here is still woefully lacking to fully support shallow
clones. It will require an API break to fully address. This commit
should at least make the server APIs emit proper data, which is
strictly better than before.
Differential Revision: https://phab.mercurial-scm.org/D5406
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Mon, 10 Dec 2018 18:55:08 +0000 |
parents | 10c10da14c5d |
children | 2888d12b80a6 |
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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 nullid from mercurial import ( 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 = tempfile.mkdtemp() self.tempdirs.append(tempdir) return tempdir def getHash(self, content): return hashlib.sha1(content).digest() def getFakeHash(self): return ''.join(chr(random.randint(0, 255)) for _ in range(20)) def createPack(self, revisions=None, packdir=None): if revisions is None: revisions = [("filename", self.getFakeHash(), nullid, "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 = "foo" node = self.getHash(content) revisions = [(filename, node, nullid, content)] pack = self.createPack(revisions) if self.paramsavailable: self.assertEquals(pack.params.fanoutprefix, basepack.SMALLFANOUTPREFIX) chain = pack.getdeltachain(filename, node) self.assertEquals(content, chain[0][4]) def testAddSingle(self): self._testAddSingle('') def testAddSingleEmpty(self): self._testAddSingle('abcdef') def testAddMultiple(self): """Test putting multiple unrelated blobs into a pack and reading them out. """ revisions = [] for i in range(10): filename = "foo%s" % i content = "abcdef%s" % 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.assertEquals((content, filename, base, {}), entry) chain = pack.getdeltachain(filename, node) self.assertEquals(content, chain[0][4]) def testAddDeltas(self): """Test putting multiple delta blobs into a pack and read the chain. """ revisions = [] filename = "foo" lastnode = nullid for i in range(10): content = "abcdef%s" % 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.assertEquals(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 = "abcdef%s" % i self.assertEquals(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 = "filename-%s" % i filerevs = [] for j in range(random.randint(1, 100)): content = "content-%s" % j node = self.getHash(content) lastnode = 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.iteritems()): chain = pack.getdeltachain(filename, node) for entry in chain: expectedcontent = blobs[(entry[0], entry[1], entry[3])] self.assertEquals(entry[4], expectedcontent) def testPackMetadata(self): revisions = [] for i in range(100): filename = '%s.txt' % i content = 'put-something-here \n' * i node = self.getHash(content) meta = {constants.METAKEYFLAG: i ** 4, constants.METAKEYSIZE: len(content), 'Z': 'random_string', '_': '\0' * i} revisions.append((filename, node, 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.assertEquals(parsedmeta, origmeta) def testGetMissing(self): """Test the getmissing() api. """ revisions = [] filename = "foo" lastnode = nullid for i in range(10): content = "abcdef%s" % i node = self.getHash(content) revisions.append((filename, node, lastnode, content)) lastnode = node pack = self.createPack(revisions) missing = pack.getmissing([("foo", revisions[0][1])]) self.assertFalse(missing) missing = pack.getmissing([("foo", revisions[0][1]), ("foo", revisions[1][1])]) self.assertFalse(missing) fakenode = self.getFakeHash() missing = pack.getmissing([("foo", revisions[0][1]), ("foo", fakenode)]) self.assertEquals(missing, [("foo", fakenode)]) def testAddThrows(self): pack = self.createPack() try: pack.add('filename', nullid, 'contents') self.assertTrue(False, "datapack.add should throw") except RuntimeError: pass def testBadVersionThrows(self): pack = self.createPack() path = pack.path + '.datapack' with open(path) 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, 'w+') as f: f.write(raw) try: pack = self.datapackreader(pack.path) self.assertTrue(False, "bad version number should have thrown") except RuntimeError: pass def testMissingDeltabase(self): fakenode = self.getFakeHash() revisions = [("filename", fakenode, self.getFakeHash(), "content")] pack = self.createPack(revisions) chain = pack.getdeltachain("filename", fakenode) self.assertEquals(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 xrange(total): filename = "filename-%s" % i content = filename node = self.getHash(content) blobs[(filename, node)] = content revisions.append((filename, node, nullid, content)) pack = self.createPack(revisions) if self.paramsavailable: self.assertEquals(pack.params.fanoutprefix, basepack.LARGEFANOUTPREFIX) for (filename, node), content in blobs.iteritems(): actualcontent = pack.getdeltachain(filename, node)[0][4] self.assertEquals(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 = (str(i), self.getFakeHash(), nullid, "content") for _ in range(revisionsperpack): chain.append(revision) revision = ( str(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.assertEquals( mostrecentpack.getdeltachain(revision[0], revision[1]), chain ) self.assertEquals(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 xrange(packsize): filename = "filename-%s" % i content = "content-%s" % i node = self.getHash(content) revisions.append((filename, node, 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 %s lookups = %0.04f" % (('%s' % packsize).rjust(7), ('%s' % 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__': silenttestrunner.main(__name__)