mirror of
https://github.com/facebook/sapling.git
synced 2024-10-10 00:45:18 +03:00
98d9269874
Summary: Create a fork of the Mercurial code that we can use to build server rpms. The hg servers will continue to exist for a few more months while we move the darkstorm and ediscovery use cases off them. In the mean time, we want to start making breaking changes to the client, so let's create a stable copy of the hg code to produce rpms for the hg servers. The fork is based off c7770c78d, the latest hg release. This copies the files as is, then adds some minor tweaks to get it to build: - Disables some lint checks that appear to be bypassed by path - sed replace eden/scm with eden/hg-server - Removed a dependency on scm/telemetry from the edenfs-client tests since scm/telemetry pulls in the original eden/scm/lib/configparser which conflicts with the hg-server conflict parser. allow-large-files Reviewed By: quark-zju Differential Revision: D27632557 fbshipit-source-id: b2f442f4ec000ea08e4d62de068750832198e1f4
225 lines
5.1 KiB
Python
225 lines
5.1 KiB
Python
from __future__ import absolute_import, print_function
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import os
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import subprocess
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import sys
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from edenscm.mercurial import (
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extensions,
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hg,
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localrepo,
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ui as uimod,
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util,
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vfs as vfsmod,
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)
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from hghave import require
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require(["py2"])
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try:
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xrange(0)
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except NameError:
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xrange = range
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class fakerepo(object):
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def __init__(self):
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self._filecache = {}
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class fakevfs(object):
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def join(self, p):
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return p
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vfs = localvfs = sharedvfs = fakevfs()
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def unfiltered(self):
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return self
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def sjoin(self, p):
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return p
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@localrepo.repofilecache("x", "y")
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def cached(self):
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print("creating")
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return "string from function"
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def invalidate(self):
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for k in self._filecache:
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try:
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delattr(self, k)
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except AttributeError:
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pass
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def basic(repo):
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print("* neither file exists")
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# calls function
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repo.cached
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repo.invalidate()
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print("* neither file still exists")
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# uses cache
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repo.cached
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# create empty file
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f = open("x", "w")
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f.close()
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repo.invalidate()
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print("* empty file x created")
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# should recreate the object
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repo.cached
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f = open("x", "w")
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f.write("a")
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f.close()
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repo.invalidate()
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print("* file x changed size")
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# should recreate the object
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repo.cached
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repo.invalidate()
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print("* nothing changed with either file")
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# stats file again, reuses object
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repo.cached
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# atomic replace file, size doesn't change
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# hopefully st_mtime doesn't change as well so this doesn't use the cache
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# because of inode change
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f = vfsmod.vfs(".")("x", "w", atomictemp=True)
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f.write("b")
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f.close()
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repo.invalidate()
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print("* file x changed inode")
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repo.cached
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# create empty file y
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f = open("y", "w")
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f.close()
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repo.invalidate()
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print("* empty file y created")
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# should recreate the object
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repo.cached
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f = open("y", "w")
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f.write("A")
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f.close()
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repo.invalidate()
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print("* file y changed size")
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# should recreate the object
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repo.cached
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f = vfsmod.vfs(".")("y", "w", atomictemp=True)
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f.write("B")
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f.close()
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repo.invalidate()
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print("* file y changed inode")
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repo.cached
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f = vfsmod.vfs(".")("x", "w", atomictemp=True)
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f.write("c")
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f.close()
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f = vfsmod.vfs(".")("y", "w", atomictemp=True)
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f.write("C")
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f.close()
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repo.invalidate()
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print("* both files changed inode")
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repo.cached
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def setbeforeget(repo):
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os.remove("x")
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os.remove("y")
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repo.cached = "string set externally"
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repo.invalidate()
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print("* neither file exists")
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print(repo.cached)
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repo.invalidate()
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f = open("x", "w")
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f.write("a")
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f.close()
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print("* file x created")
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print(repo.cached)
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repo.cached = "string 2 set externally"
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repo.invalidate()
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print("* string set externally again")
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print(repo.cached)
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repo.invalidate()
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f = open("y", "w")
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f.write("b")
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f.close()
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print("* file y created")
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print(repo.cached)
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def antiambiguity():
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filename = "ambigcheck"
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# try some times, because reproduction of ambiguity depends on
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# "filesystem time"
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for i in xrange(5):
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fp = open(filename, "w")
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fp.write("FOO")
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fp.close()
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oldstat = util.stat(filename)
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if oldstat.st_ctime != oldstat.st_mtime:
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# subsequent changing never causes ambiguity
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continue
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repetition = 3
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# repeat changing via checkambigatclosing, to examine whether
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# st_mtime is advanced multiple times as expected
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for i in xrange(repetition):
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# explicit closing
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fp = vfsmod.checkambigatclosing(open(filename, "a"))
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fp.write("FOO")
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fp.close()
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# implicit closing by "with" statement
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with vfsmod.checkambigatclosing(open(filename, "a")) as fp:
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fp.write("BAR")
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newstat = os.stat(filename)
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if oldstat.st_ctime != newstat.st_ctime:
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# timestamp ambiguity was naturally avoided while repetition
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continue
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# st_mtime should be advanced "repetition * 2" times, because
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# all changes occurred at same time (in sec)
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expected = (oldstat.st_mtime + repetition * 2) & 0x7FFFFFFF
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if newstat.st_mtime != expected:
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print(
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"'newstat.st_mtime %s is not %s (as %s + %s * 2)"
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% (newstat.st_mtime, expected, oldstat.st_mtime, repetition)
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)
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# no more examination is needed regardless of result
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break
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else:
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# This platform seems too slow to examine anti-ambiguity
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# of file timestamp (or test happened to be executed at
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# bad timing). Exit silently in this case, because running
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# on other faster platforms can detect problems
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pass
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print("basic:")
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print()
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basic(fakerepo())
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print()
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print("setbeforeget:")
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print()
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setbeforeget(fakerepo())
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print()
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print("antiambiguity:")
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print()
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antiambiguity()
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