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import datetime
from twisted.trial import unittest
from twisted.internet import task
from twisted.internet.interfaces import IReactorTime
from zope.interface import implementer
from txtorcon.addrmap import AddrMap
from txtorcon.interface import IAddrListener
@implementer(IAddrListener)
class AddrMapTests(unittest.TestCase):
fmt = '%Y-%m-%d %H:%M:%S'
def test_parse(self):
"""
Make sure it's parsing things properly.
"""
now = datetime.datetime.now() + datetime.timedelta(seconds=10)
nowutc = datetime.datetime.utcnow() + datetime.timedelta(seconds=10)
# we need to not-barf on extra args as per control-spec.txt
line = 'www.example.com 72.30.2.43 "%s" EXPIRES="%s" FOO=bar BAR=baz' % (now.strftime(self.fmt), nowutc.strftime(self.fmt))
am = AddrMap()
am.update(line)
addr = am.find('www.example.com')
self.assertTrue(addr.ip == '72.30.2.43' or addr.ip.exploded == '72.30.2.43')
# maybe not the most robust, should convert to
# seconds-since-epoch instead? the net result of the parsing
# is we've rounded to seconds...
self.assertEqual(addr.expires.ctime(), nowutc.ctime())
line = 'www.example.com 72.30.2.43 "%s" "%s"' % (now.strftime(self.fmt), nowutc.strftime(self.fmt))
am.update(line)
self.assertEqual(addr.expires.ctime(), nowutc.ctime())
# this will have resulted in an expiry call, which we need to
# cancel to keep the reactor clean. for consistency, we use
# the IReactorTime interface from AddrMap
am.scheduler.getDelayedCalls()[0].cancel()
def test_expires(self):
"""
Test simply expiry case
"""
clock = task.Clock()
am = AddrMap()
am.scheduler = IReactorTime(clock)
now = datetime.datetime.now() + datetime.timedelta(seconds=10)
nowutc = datetime.datetime.utcnow() + datetime.timedelta(seconds=10)
line = 'www.example.com 72.30.2.43 "%s" EXPIRES="%s"' % (now.strftime(self.fmt), nowutc.strftime(self.fmt))
am.update(line)
self.assertTrue('www.example.com' in am.addr)
# advance time past when the expiry should have occurred
clock.advance(10)
self.assertTrue('www.example.com' not in am.addr)
def test_expires_never(self):
"""
Test a NEVER expires line, as in what we'd get a startup for a
configured address-mapping.
"""
clock = task.Clock()
am = AddrMap()
am.scheduler = IReactorTime(clock)
line = 'www.example.com 72.30.2.43 "NEVER"'
am.update(line)
self.assertTrue('www.example.com' in am.addr)
self.assertEqual(len(clock.getDelayedCalls()), 0)
def test_expires_old(self):
"""
Test something that expires before "now"
"""
clock = task.Clock()
am = AddrMap()
am.scheduler = IReactorTime(clock)
now = datetime.datetime.now() + datetime.timedelta(seconds=-10)
nowutc = datetime.datetime.utcnow() + datetime.timedelta(seconds=-10)
line = 'www.example.com 72.30.2.43 "%s" EXPIRES="%s"' % (now.strftime(self.fmt), nowutc.strftime(self.fmt))
am.update(line)
self.assertTrue('www.example.com' in am.addr)
# arguably we shouldn't even have put this in the map maybe,
# but the reactor needs to iterate before our expiry callback
# gets called (right away) which is simulated by the
# clock.advance call
clock.advance(0)
self.assertTrue('www.example.com' not in am.addr)
def test_expires_with_update(self):
"""
This test updates the expiry time and checks that we properly
delay our expiry callback.
"""
clock = task.Clock()
am = AddrMap()
am.scheduler = IReactorTime(clock)
# now do an actual update to an existing Addr entry.
now = datetime.datetime.now() + datetime.timedelta(seconds=10)
nowutc = datetime.datetime.utcnow() + datetime.timedelta(seconds=10)
line = 'www.example.com 72.30.2.43 "%s" EXPIRES="%s"' % (now.strftime(self.fmt), nowutc.strftime(self.fmt))
am.update(line)
self.assertTrue(am.find('www.example.com'))
# the update
now = datetime.datetime.now() + datetime.timedelta(seconds=20)
nowutc = datetime.datetime.utcnow() + datetime.timedelta(seconds=20)
line = 'www.example.com 72.30.2.43 "%s" EXPIRES="%s"' % (now.strftime(self.fmt), nowutc.strftime(self.fmt))
am.update(line)
self.assertTrue('www.example.com' in am.addr)
# advance time by the old expiry value and we should still
# find the entry
clock.advance(10)
self.assertTrue('www.example.com' in am.addr)
# ...but advance past the new expiry (another 10 seconds) and
# it should vanish
clock.advance(10)
self.assertTrue('www.example.com' not in am.addr)
def test_8596_cached_1(self):
clock = task.Clock()
am = AddrMap()
am.scheduler = IReactorTime(clock)
line = 'example.com 192.0.2.1 NEVER CACHED="YES"'
am.update(line)
self.assertTrue('example.com' in am.addr)
self.assertEqual(len(clock.getDelayedCalls()), 0)
def test_8596_cached_2(self):
clock = task.Clock()
am = AddrMap()
am.scheduler = IReactorTime(clock)
line = 'example.com 192.0.43.10 "2013-04-03 22:29:11" EXPIRES="2013-04-03 20:29:11" CACHED="NO"'
am.update(line)
self.assertTrue('example.com' in am.addr)
self.assertEqual(len(clock.getDelayedCalls()), 1)
def test_8596_cached_3(self):
clock = task.Clock()
am = AddrMap()
am.scheduler = IReactorTime(clock)
line = 'example.invalid <error> "2013-04-03 08:28:52" error=yes EXPIRES="2013-04-03 06:28:52" CACHE="NO"'
am.update(line)
self.assertTrue('example.invalid' not in am.addr)
self.assertEqual(len(clock.getDelayedCalls()), 0)
def addrmap_expired(self, name):
self.expires.append(name)
def addrmap_added(self, addr):
self.addrmap.append(addr)
def test_double_add_listener(self):
am = AddrMap()
am.add_listener(self)
am.add_listener(self)
self.assertEqual(1, len(am.listeners))
def test_listeners(self):
self.expires = []
self.addrmap = []
clock = task.Clock()
am = AddrMap()
am.scheduler = IReactorTime(clock)
am.add_listener(self)
now = datetime.datetime.now() + datetime.timedelta(seconds=10)
nowutc = datetime.datetime.utcnow() + datetime.timedelta(seconds=10)
line = 'www.example.com 72.30.2.43 "%s" EXPIRES="%s"' % (now.strftime(self.fmt), nowutc.strftime(self.fmt))
am.update(line)
# see if our listener got an update
a = am.find('www.example.com')
self.assertEqual(self.addrmap, [a])
# advance time past when the expiry should have occurred
clock.advance(10)
# check that our listener got an expires event
self.assertEqual(self.expires, ['www.example.com'])
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