revisionbranchcache: fall back to slow path if starting readonly (issue4531)
Transitioning to Mercurial versions with revision branch cache could be slow as
long as all operations were readonly (revset queries) and the cache would be
populated but not written back.
Instead, fall back to using the consistently slow path when readonly and the
cache doesn't exist yet. That avoids the overhead of populating the cache
without writing it back.
If not readonly, it will still populate all missing entries initially. That
avoids repeated writing of the cache file with small updates, and it also makes
sure a fully populated cache available for the readonly operations.
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:
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')