nodemap: introduce append-only incremental update of the persistent data
Rewriting the full nodemap for each transaction has a cost we would like to
avoid. We introduce a new way to write persistent nodemap data by adding new
information at the end for file. Any new and updated block as added at the end
of the file. The last block is the new root node.
With this method, some of the block already on disk get "dereferenced" and
become dead data. In later changesets, We'll start tracking the amount of dead
data to eventually re-generate a full nodemap.
Differential Revision: https://phab.mercurial-scm.org/D7886
from __future__ import absolute_import, print_function
from mercurial import demandimport
demandimport.enable()
from mercurial import (
error,
pycompat,
ui as uimod,
url,
util,
)
from mercurial.utils import stringutil
urlerr = util.urlerr
urlreq = util.urlreq
class myui(uimod.ui):
def interactive(self):
return False
origui = myui.load()
def writeauth(items):
ui = origui.copy()
for name, value in items.items():
ui.setconfig(b'auth', name, value)
return ui
def _stringifyauthinfo(ai):
if ai is None:
return ai
realm, authuris, user, passwd = ai
return (
pycompat.strurl(realm),
[pycompat.strurl(u) for u in authuris],
pycompat.strurl(user),
pycompat.strurl(passwd),
)
def test(auth, urls=None):
print('CFG:', pycompat.sysstr(stringutil.pprint(auth, bprefix=True)))
prefixes = set()
for k in auth:
prefixes.add(k.split(b'.', 1)[0])
for p in prefixes:
for name in (b'.username', b'.password'):
if (p + name) not in auth:
auth[p + name] = p
auth = dict((k, v) for k, v in auth.items() if v is not None)
ui = writeauth(auth)
def _test(uri):
print('URI:', pycompat.strurl(uri))
try:
pm = url.passwordmgr(ui, urlreq.httppasswordmgrwithdefaultrealm())
u, authinfo = util.url(uri).authinfo()
if authinfo is not None:
pm.add_password(*_stringifyauthinfo(authinfo))
print(
' ',
tuple(
pycompat.strurl(a)
for a in pm.find_user_password('test', pycompat.strurl(u))
),
)
except error.Abort:
print(' ', 'abort')
if not urls:
urls = [
b'http://example.org/foo',
b'http://example.org/foo/bar',
b'http://example.org/bar',
b'https://example.org/foo',
b'https://example.org/foo/bar',
b'https://example.org/bar',
b'https://x@example.org/bar',
b'https://y@example.org/bar',
]
for u in urls:
_test(u)
print('\n*** Test in-uri schemes\n')
test({b'x.prefix': b'http://example.org'})
test({b'x.prefix': b'https://example.org'})
test({b'x.prefix': b'http://example.org', b'x.schemes': b'https'})
test({b'x.prefix': b'https://example.org', b'x.schemes': b'http'})
print('\n*** Test separately configured schemes\n')
test({b'x.prefix': b'example.org', b'x.schemes': b'http'})
test({b'x.prefix': b'example.org', b'x.schemes': b'https'})
test({b'x.prefix': b'example.org', b'x.schemes': b'http https'})
print('\n*** Test prefix matching\n')
test(
{
b'x.prefix': b'http://example.org/foo',
b'y.prefix': b'http://example.org/bar',
}
)
test(
{
b'x.prefix': b'http://example.org/foo',
b'y.prefix': b'http://example.org/foo/bar',
}
)
test({b'x.prefix': b'*', b'y.prefix': b'https://example.org/bar'})
print('\n*** Test user matching\n')
test(
{
b'x.prefix': b'http://example.org/foo',
b'x.username': None,
b'x.password': b'xpassword',
},
urls=[b'http://y@example.org/foo'],
)
test(
{
b'x.prefix': b'http://example.org/foo',
b'x.username': None,
b'x.password': b'xpassword',
b'y.prefix': b'http://example.org/foo',
b'y.username': b'y',
b'y.password': b'ypassword',
},
urls=[b'http://y@example.org/foo'],
)
test(
{
b'x.prefix': b'http://example.org/foo/bar',
b'x.username': None,
b'x.password': b'xpassword',
b'y.prefix': b'http://example.org/foo',
b'y.username': b'y',
b'y.password': b'ypassword',
},
urls=[b'http://y@example.org/foo/bar'],
)
print('\n*** Test user matching with name in prefix\n')
# prefix, username and URL have the same user
test(
{
b'x.prefix': b'https://example.org/foo',
b'x.username': None,
b'x.password': b'xpassword',
b'y.prefix': b'http://y@example.org/foo',
b'y.username': b'y',
b'y.password': b'ypassword',
},
urls=[b'http://y@example.org/foo'],
)
# Prefix has a different user from username and URL
test(
{
b'y.prefix': b'http://z@example.org/foo',
b'y.username': b'y',
b'y.password': b'ypassword',
},
urls=[b'http://y@example.org/foo'],
)
# Prefix has a different user from URL; no username
test(
{b'y.prefix': b'http://z@example.org/foo', b'y.password': b'ypassword'},
urls=[b'http://y@example.org/foo'],
)
# Prefix and URL have same user, but doesn't match username
test(
{
b'y.prefix': b'http://y@example.org/foo',
b'y.username': b'z',
b'y.password': b'ypassword',
},
urls=[b'http://y@example.org/foo'],
)
# Prefix and URL have the same user; no username
test(
{b'y.prefix': b'http://y@example.org/foo', b'y.password': b'ypassword'},
urls=[b'http://y@example.org/foo'],
)
# Prefix user, but no URL user or username
test(
{b'y.prefix': b'http://y@example.org/foo', b'y.password': b'ypassword'},
urls=[b'http://example.org/foo'],
)
def testauthinfo(fullurl, authurl):
print('URIs:', fullurl, authurl)
pm = urlreq.httppasswordmgrwithdefaultrealm()
ai = _stringifyauthinfo(util.url(pycompat.bytesurl(fullurl)).authinfo()[1])
pm.add_password(*ai)
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')