view tests/test-hgweb-auth.py @ 42743:8c9a6adec67a

rust-discovery: using the children cache in add_missing

The DAG range computation often needs to get back to very old
revisions, and turns out to be disproportionately long, given
that the end goal is to remove the descendents of the given
missing revisons from the undecided set.

The fast iteration capabilities available in the Rust case make
it possible to avoid the DAG range entirely, at the cost of
precomputing the children cache, and to simply iterate on
children of the given missing revisions.

This is a case where staying on the same side of the interface
between the two languages has clear benefits.

On discoveries with initial undecided sets
small enough to bypass sampling entirely, the total cost of
computing the children cache and the subsequent iteration
becomes better than the Python + C counterpart, which relies on
reachableroots2.

For example, on a repo with more than one million revisions with
an initial undecided set of 11 elements, we get these figures:

Rust version with simple iteration
  addcommons: 57.287us
  first undecided computation: 184.278334ms
  first children cache computation: 131.056us
  addmissings iteration: 42.766us
  first addinfo total: 185.24 ms

Python + C version
  first addcommons: 0.29 ms
  addcommons 0.21 ms
  first undecided computation 191.35 ms
  addmissings 45.75 ms
  first addinfo total: 237.77 ms

On discoveries with large undecided sets, the initial price paid
makes the first addinfo slower than the Python + C version,
but that's more than compensated by the gain in sampling and
subsequent iterations.
Here's an extreme example with an undecided set of a million revisions:

Rust version:
  first undecided computation: 293.842629ms
  first children cache computation: 407.911297ms
  addmissings iteration: 34.312869ms
  first addinfo total: 776.02 ms
  taking initial sample
  query 2: sampling time: 1318.38 ms
  query 2; still undecided: 1005013, sample size is: 200
  addmissings: 143.062us

Python + C version:
  first undecided computation 298.13 ms
  addmissings 80.13 ms
  first addinfo total: 399.62 ms
  taking initial sample
  query 2: sampling time: 3957.23 ms
  query 2; still undecided: 1005013, sample size is: 200
  addmissings 52.88 ms

Differential Revision: https://phab.mercurial-scm.org/D6428

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://[e-mail]/bar',
            b'https://[e-mail]/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://[e-mail]/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://[e-mail]/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://[e-mail]/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://[e-mail]/foo',
      b'y.username': b'y',
      b'y.password': b'ypassword'},
     urls=[b'http://[e-mail]/foo'])
# Prefix has a different user from username and URL
test({b'y.prefix': b'http://[e-mail]/foo',
      b'y.username': b'y',
      b'y.password': b'ypassword'},
     urls=[b'http://[e-mail]/foo'])
# Prefix has a different user from URL; no username
test({b'y.prefix': b'http://[e-mail]/foo',
      b'y.password': b'ypassword'},
     urls=[b'http://[e-mail]/foo'])
# Prefix and URL have same user, but doesn't match username
test({b'y.prefix': b'http://[e-mail]/foo',
      b'y.username': b'z',
      b'y.password': b'ypassword'},
     urls=[b'http://[e-mail]/foo'])
# Prefix and URL have the same user; no username
test({b'y.prefix': b'http://[e-mail]/foo',
      b'y.password': b'ypassword'},
     urls=[b'http://[e-mail]/foo'])
# Prefix user, but no URL user or username
test({b'y.prefix': b'http://[e-mail]/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://[e-mail]:8080/foo', 'http://example.com:8080/foo')