view tests/dumbhttp.py @ 37865:da083d9fafab

shortest: don't keep checking for longer prefix if node doesn't exist (API)

If revlog.shortest() is called with an invalid nodeid, we keep
checking if longer and longer prefixes are valid. We call
revlog._partialmatch() for each prefix. That function will give us
None if the node doesn't exist (and a RevlogError if it's ambiguous),
so there's no need to keep checking.

This patch instead makes revlog.shortest() raise a LookupError is the
node does not exist, and updates the caller to handle it. Before this
patch, revlog.shortest() would return the full hexnode for nonexistent
nodeids. By the same reasoning as in 7b2955624777 (scmutil: make
shortesthexnodeidprefix() take a full binary nodeid, 2018-04-14), it's
not revlog.shortest() that should decide how to present nonexistent
nodeids, so that's now moved to the template function.

This should speed up cases where {shortest()} is applied to an invalid
nodeid, but I couldn't think of a reasonable case where that would
happen.

Differential Revision: https://phab.mercurial-scm.org/D3461

#!/usr/bin/env python

from __future__ import absolute_import

"""
Small and dumb HTTP server for use in tests.
"""

import optparse
import os
import signal
import socket
import sys

from mercurial import (
    pycompat,
    server,
    util,
)

httpserver = util.httpserver
OptionParser = optparse.OptionParser

if os.environ.get('HGIPV6', '0') == '1':
    class simplehttpserver(httpserver.httpserver):
        address_family = socket.AF_INET6
else:
    simplehttpserver = httpserver.httpserver

class _httprequesthandler(httpserver.simplehttprequesthandler):
    def log_message(self, format, *args):
        httpserver.simplehttprequesthandler.log_message(self, format, *args)
        sys.stderr.flush()

class simplehttpservice(object):
    def __init__(self, host, port):
        self.address = (host, port)
    def init(self):
        self.httpd = simplehttpserver(self.address, _httprequesthandler)
    def run(self):
        self.httpd.serve_forever()

if __name__ == '__main__':
    parser = OptionParser()
    parser.add_option('-p', '--port', dest='port', type='int', default=8000,
        help='TCP port to listen on', metavar='PORT')
    parser.add_option('-H', '--host', dest='host', default='localhost',
        help='hostname or IP to listen on', metavar='HOST')
    parser.add_option('--logfile', help='file name of access/error log')
    parser.add_option('--pid', dest='pid',
        help='file name where the PID of the server is stored')
    parser.add_option('-f', '--foreground', dest='foreground',
        action='store_true',
        help='do not start the HTTP server in the background')
    parser.add_option('--daemon-postexec', action='append')

    (options, args) = parser.parse_args()

    signal.signal(signal.SIGTERM, lambda x, y: sys.exit(0))

    if options.foreground and options.logfile:
        parser.error("options --logfile and --foreground are mutually "
                     "exclusive")
    if options.foreground and options.pid:
        parser.error("options --pid and --foreground are mutually exclusive")

    opts = {b'pid_file': options.pid,
            b'daemon': not options.foreground,
            b'daemon_postexec': options.daemon_postexec}
    service = simplehttpservice(options.host, options.port)
    runargs = [sys.executable, __file__] + sys.argv[1:]
    runargs = [pycompat.fsencode(a) for a in runargs]
    server.runservice(opts, initfn=service.init, runfn=service.run,
                      logfile=options.logfile,
                      runargs=runargs)