revlog: add exception when linkrev == nullrev
When we deployed the latest crew mercurial to our users, a few of them
had issues where a filelog would have an entry with a -1 linkrev. This
caused operations like rebase and amend to create a bundle containing the
entire repository, which took a long time.
I don't know what the issue is, but adding this check should prevent repos
from getting in this state, and should help us pinpoint the issue next time
it happens.
from mercurial import demandimport; demandimport.enable()
import urllib2
from mercurial import ui, util
from mercurial import url
from mercurial.error import Abort
class myui(ui.ui):
def interactive(self):
return False
origui = myui()
def writeauth(items):
ui = origui.copy()
for name, value in items.iteritems():
ui.setconfig('auth', name, value)
return ui
def dumpdict(dict):
return '{' + ', '.join(['%s: %s' % (k, dict[k])
for k in sorted(dict.iterkeys())]) + '}'
def test(auth, urls=None):
print 'CFG:', dumpdict(auth)
prefixes = set()
for k in auth:
prefixes.add(k.split('.', 1)[0])
for p in prefixes:
for name in ('.username', '.password'):
if (p + name) not in auth:
auth[p + name] = p
auth = dict((k, v) for k, v in auth.iteritems() if v is not None)
ui = writeauth(auth)
def _test(uri):
print 'URI:', uri
try:
pm = url.passwordmgr(ui)
u, authinfo = util.url(uri).authinfo()
if authinfo is not None:
pm.add_password(*authinfo)
print ' ', pm.find_user_password('test', u)
except Abort, e:
print 'abort'
if not urls:
urls = [
'http://example.org/foo',
'http://example.org/foo/bar',
'http://example.org/bar',
'https://example.org/foo',
'https://example.org/foo/bar',
'https://example.org/bar',
'https://x@example.org/bar',
'https://y@example.org/bar',
]
for u in urls:
_test(u)
print '\n*** Test in-uri schemes\n'
test({'x.prefix': 'http://example.org'})
test({'x.prefix': 'https://example.org'})
test({'x.prefix': 'http://example.org', 'x.schemes': 'https'})
test({'x.prefix': 'https://example.org', 'x.schemes': 'http'})
print '\n*** Test separately configured schemes\n'
test({'x.prefix': 'example.org', 'x.schemes': 'http'})
test({'x.prefix': 'example.org', 'x.schemes': 'https'})
test({'x.prefix': 'example.org', 'x.schemes': 'http https'})
print '\n*** Test prefix matching\n'
test({'x.prefix': 'http://example.org/foo',
'y.prefix': 'http://example.org/bar'})
test({'x.prefix': 'http://example.org/foo',
'y.prefix': 'http://example.org/foo/bar'})
test({'x.prefix': '*', 'y.prefix': 'https://example.org/bar'})
print '\n*** Test user matching\n'
test({'x.prefix': 'http://example.org/foo',
'x.username': None,
'x.password': 'xpassword'},
urls=['http://y@example.org/foo'])
test({'x.prefix': 'http://example.org/foo',
'x.username': None,
'x.password': 'xpassword',
'y.prefix': 'http://example.org/foo',
'y.username': 'y',
'y.password': 'ypassword'},
urls=['http://y@example.org/foo'])
test({'x.prefix': 'http://example.org/foo/bar',
'x.username': None,
'x.password': 'xpassword',
'y.prefix': 'http://example.org/foo',
'y.username': 'y',
'y.password': 'ypassword'},
urls=['http://y@example.org/foo/bar'])
def testauthinfo(fullurl, authurl):
print 'URIs:', fullurl, authurl
pm = urllib2.HTTPPasswordMgrWithDefaultRealm()
pm.add_password(*util.url(fullurl).authinfo()[1])
print pm.find_user_password('test', authurl)
print '\n*** Test urllib2 and util.url\n'
testauthinfo('http://user@example.com:8080/foo', 'http://example.com:8080/foo')