Viewing file:  MirrorTest.py (5.68 KB) -rw-r--r--
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#!/usr/bin/env python
import threading, Queue, time, re, os, tempfile
import aptsources
from timeit import Timer
import urllib
import socket
import random
# Python requires to set the time out globally
socket.setdefaulttimeout(2)
class MirrorTest(threading.Thread):
"""Determines the best mirrors by perfoming ping and download test."""
class PingWorker(threading.Thread):
"""Use the command line command ping to determine the server's
response time. Using multiple threads allows to run several
test simultaneously."""
def __init__(self, jobs, results, id, parent, borders=(0,1), mod=(0,0)):
self.borders = borders
self.mod = mod
self.parent = parent
self.id = id
self.jobs = jobs
self.results = results
self.match_result = re.compile(r"^rtt .* = [\.\d]+/([\.\d]+)/.*")
threading.Thread.__init__(self)
def run(self):
result = None
while MirrorTest.completed < MirrorTest.todo and\
self.parent.running.isSet():
try:
mirror = self.jobs.get(True, 1)
host = mirror.hostname
except:
continue
self.parent.report_action("Pinging %s..." % host)
commando = os.popen("ping -q -c 2 -W 1 -i 0.5 %s" % host,
"r")
while True:
line = commando.readline()
if not line:
break
result = re.findall(self.match_result, line)
MirrorTest.completed_lock.acquire()
MirrorTest.completed += 1
self.parent.report_progress(MirrorTest.completed,
MirrorTest.todo,
self.borders,
self.mod)
if result:
self.results.append([float(result[0]), host, mirror])
MirrorTest.completed_lock.release()
def __init__(self, mirrors, test_file, running=None):
threading.Thread.__init__(self)
self.test_file = test_file
self.threads = []
MirrorTest.completed = 0
MirrorTest.completed_lock = threading.Lock()
MirrorTest.todo = len(mirrors)
self.mirrors = mirrors
if not running:
self.running = threading.Event()
else:
self.running = running
def run_full_test(self):
"""Run a test of the mirror test."""
results_ping = self.run_ping_test(max=10)
results = self.run_download_test(map(lambda r: r[2], results_ping))
for (t, h) in results:
print h.hostname,t
def report_action(self, text):
"""Should be used by all sub test to collect action status messages
in a central place."""
print text
def report_progress(self, current, max, borders=(0,100), mod=(0,0)):
"""Should be used by all sub test to collect progress messages
in a central place."""
print "Completed %s of %s" % (current + mod[0], max + mod[1])
def run_ping_test(self, mirrors=None, max=None, borders=(0,1), mod=(0,0)):
"""Performs ping tests of the given mirrors and returns the
best results (specified by max).
Mod and borders could be used to tweak the reported result if
the download test is only a part of a whole series of tests."""
if mirrors == None:
mirrors = self.mirrors
jobs = Queue.Queue()
for m in mirrors:
jobs.put(m)
results = []
#FIXME: Optimze the number of ping working threads LP#90379
for i in range(25):
t = MirrorTest.PingWorker(jobs, results, i, self, borders, mod)
self.threads.append(t)
t.start()
for t in self.threads:
t.join()
results.sort()
return results[0:max]
def run_download_test(self, mirrors=None, max=None, borders=(0,1),
mod=(0,0)):
"""Performs download tests of the given mirrors and returns the
best results (specified by max).
Mod and borders could be used to tweak the reported result if
the download test is only a part of a whole series of tests."""
def test_download_speed(mirror):
url = "%s/%s" % (mirror.get_repo_urls()[0],
self.test_file)
self.report_action("Downloading %s..." % url)
start = time.time()
try:
data = urllib.urlopen(url).read(102400)
return time.time() - start
except:
return 0
if mirrors == None:
mirrors = self.mirrors
results = []
for m in mirrors:
if not self.running.isSet():
break
download_time = test_download_speed(m)
if download_time > 0:
results.append([download_time, m])
self.report_progress(mirrors.index(m), len(mirrors), (0.50,1), mod)
results.sort()
return results[0:max]
if __name__ == "__main__":
distro = aptsources.distro.get_distro()
distro.get_sources(aptsources.SourcesList())
pipe = os.popen("dpkg --print-architecture")
arch = pipe.read().strip()
test_file = "dists/%s/%s/binary-%s/Packages.gz" % \
(distro.source_template.name,
distro.source_template.components[0].name,
arch)
app = MirrorTest(distro.source_template.mirror_set.values(),
test_file)
app.run_full_test()
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