branchcache: skip entries that are topological heads in the on disk file
In the majority of cases, topological heads are also branch heads. We have
efficient way to get the topological heads and efficient way to retrieve
their branch information. So there is little value in putting them in the branch
cache file explicitly. On the contrary, writing them explicitly tend to create
very large cache file that are inefficient to read and update.
So the branch cache v3 format is no longer including them. This changeset focus
on the format aspect and have no focus on the performance aspect. We will cover
that later.
#!/usr/bin/env python
"""dummy SMTP server for use in tests"""
import optparse
import os
import socket
import ssl
import sys
from mercurial import (
pycompat,
server,
sslutil,
ui as uimod,
)
if os.environ.get('HGIPV6', '0') == '1':
family = socket.AF_INET6
else:
family = socket.AF_INET
def log(msg):
sys.stdout.write(msg)
sys.stdout.flush()
def mocksmtpserversession(conn, addr):
conn.send(b'220 smtp.example.com ESMTP\r\n')
line = conn.recv(1024)
if not line.lower().startswith(b'ehlo '):
log('no hello: %s\n' % line)
return
conn.send(b'250 Hello\r\n')
line = conn.recv(1024)
if not line.lower().startswith(b'mail from:'):
log('no mail from: %s\n' % line)
return
mailfrom = line[10:].decode().rstrip()
if mailfrom.startswith('<') and mailfrom.endswith('>'):
mailfrom = mailfrom[1:-1]
conn.send(b'250 Ok\r\n')
rcpttos = []
while True:
line = conn.recv(1024)
if not line.lower().startswith(b'rcpt to:'):
break
rcptto = line[8:].decode().rstrip()
if rcptto.startswith('<') and rcptto.endswith('>'):
rcptto = rcptto[1:-1]
rcpttos.append(rcptto)
conn.send(b'250 Ok\r\n')
if not line.lower().strip() == b'data':
log('no rcpt to or data: %s' % line)
conn.send(b'354 Go ahead\r\n')
data = b''
while True:
line = conn.recv(1024)
if not line:
log('connection closed before end of data')
break
data += line
if data.endswith(b'\r\n.\r\n'):
data = data[:-5]
break
conn.send(b'250 Ok\r\n')
log(
'%s from=%s to=%s\n%s\n'
% (addr[0], mailfrom, ', '.join(rcpttos), data.decode())
)
def run(host, port, certificate):
ui = uimod.ui.load()
with socket.socket(family, socket.SOCK_STREAM) as s:
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.bind((host, port))
# log('listening at %s:%d\n' % (host, port))
s.listen(1)
try:
while True:
conn, addr = s.accept()
if certificate:
try:
conn = sslutil.wrapserversocket(
conn, ui, certfile=certificate
)
except ssl.SSLError as e:
log('%s ssl error: %s\n' % (addr[0], e))
conn.close()
continue
log("connection from %s:%s\n" % addr)
mocksmtpserversession(conn, addr)
conn.close()
except KeyboardInterrupt:
pass
def _encodestrsonly(v):
if isinstance(v, type(u'')):
return v.encode('ascii')
return v
def bytesvars(obj):
unidict = vars(obj)
bd = {k.encode('ascii'): _encodestrsonly(v) for k, v in unidict.items()}
if bd[b'daemon_postexec'] is not None:
bd[b'daemon_postexec'] = [
_encodestrsonly(v) for v in bd[b'daemon_postexec']
]
return bd
def main():
op = optparse.OptionParser()
op.add_option('-d', '--daemon', action='store_true')
op.add_option('--daemon-postexec', action='append')
op.add_option('-p', '--port', type=int, default=8025)
op.add_option('-a', '--address', default='localhost')
op.add_option('--pid-file', metavar='FILE')
op.add_option('--tls', choices=['none', 'smtps'], default='none')
op.add_option('--certificate', metavar='FILE')
op.add_option('--logfile', metavar='FILE')
opts, args = op.parse_args()
if (opts.tls == 'smtps') != bool(opts.certificate):
op.error('--certificate must be specified with --tls=smtps')
server.runservice(
bytesvars(opts),
runfn=lambda: run(opts.address, opts.port, opts.certificate),
runargs=[pycompat.sysexecutable, pycompat.fsencode(__file__)]
+ pycompat.sysargv[1:],
logfile=opts.logfile,
)
if __name__ == '__main__':
main()