pacman/scripts/rankmirrors

#! /usr/bin/python
#
#   rankmirrors : read a list of mirrors from a file and rank them by speed
#
#   Original Idea copyright (c) 2006 R.G. <chesercat>
#   Modified 2006 by Dan McGee <dpmcgee@gmail.com>
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, write to the Free Software
#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
#   USA.
#
import sys, datetime, time, socket, urllib2
from optparse import OptionParser

def createOptParser():
   usage = "usage: %prog [options] MIRRORFILE"
   description = "Ranks pacman mirrors by their connection and opening speed. Pacman mirror files are located in /etc/pacman.d/."
   parser = OptionParser(usage=usage,description=description)
   parser.add_option("-f", "--formatted", action="store_true",
           dest = "formatted", default=False, help="output in mirror file format")
   parser.add_option("-n", dest="num", default=0,
           help="number of servers to output, 0 for all")
   parser.add_option("-v", "--verbose", action="store_true", dest="verbose",
           default=False, help="be verbose in output")
   return parser

def timeCmd(cmd):
   before = time.time();
   try:
       cmd();
   except KeyboardInterrupt, ki:
       raise ki
   except socket.timeout, ioe:
       return 'timeout'
   except Exception, e:
       return 'unreachable'
   return time.time() - before;

def talkToServer(serverUrl):
   opener = urllib2.build_opener()
   tmp = opener.open(serverUrl).read()

def getFuncToTime(serverUrl):
   return lambda : talkToServer(serverUrl)

def cmpPairBySecond(p1, p2):
   if p1[1] == p2[1]: return 0
   if p1[1] < p2[1]: return -1
   return 1

if __name__ == "__main__":
   parser = createOptParser()
   (options, args) = parser.parse_args()

   if len(args) != 1:
       parser.print_help(sys.stderr)
       sys.exit(0)

   # allows connections to time out if they take too long
   socket.setdefaulttimeout(10)

   fl = open(args[0], 'r')
   serverToTime = {}
   if options.formatted:
       print "# Server list generated by rankmirrors on", datetime.date.today()
   else:
       print 'Querying servers, this may take some time...'
   for ln in fl.readlines():
       splitted = ln.split('=')
       if splitted[0].strip() != 'Server':
           if options.formatted:
               print ln,
           continue

       serverUrl = splitted[1].strip()
       if serverUrl[-1] == '\n': serverUrl = serverUrl[0:-1]
       if options.verbose and options.formatted:
           print '#',serverUrl,'...',
       elif options.verbose:
           print serverUrl,'...',
       elif not options.formatted:
           print ' * ',
       sys.stdout.flush()
       serverToTime[serverUrl] = timeCmd(getFuncToTime(serverUrl))
       if options.verbose:
           print serverToTime[serverUrl]

   items = serverToTime.items()
   items.sort(cmpPairBySecond)
   numToShow = int(options.num)
   if numToShow == 0: numToShow = len(items)
   if len(items) > 0:
       if options.formatted:
           for i in items[0:numToShow]:
               print 'Server =', i[0]
       else:
           print
           print ' Servers sorted by time:'
           for i in items[0:numToShow]:
               print i[1], ':', i[0]

# vim: set ts=4 sw=4 sta et sts ai: