def lineReceived(self, line):
if not line.startswith('$'):
if self.ignore_invalid_sentence:
return
raise InvalidSentence("%r does not begin with $" % (line,))
# message is everything between $ and *, checksum is xor of all ASCII values of the message
strmessage, checksum = line[1:].strip().split('*')
message = strmessage.split(',')
sentencetype, message = message[0], message[1:]
dispatch = self.dispatch.get(sentencetype, None)
if (not dispatch) and (not self.ignore_unknown_sentencetypes):
raise InvalidSentence("sentencetype %r" % (sentencetype,))
if not self.ignore_checksum_mismatch:
checksum, calculated_checksum = int(checksum, 16), reduce(operator.xor, map(ord, strmessage))
if checksum != calculated_checksum:
raise InvalidChecksum("Given 0x%02X != 0x%02X" % (checksum, calculated_checksum))
handler = getattr(self, "handle_%s" % dispatch, None)
decoder = getattr(self, "decode_%s" % dispatch, None)
if not (dispatch and handler and decoder):
# missing dispatch, handler, or decoder
return
# return handler(*decoder(*message))
try:
decoded = decoder(*message)
except Exception, e:
raise InvalidSentence("%r is not a valid %s (%s) sentence" % (line, sentencetype, dispatch))
def pickServer(self):
assert self.servers is not None
assert self.orderedServers is not None
if not self.servers and not self.orderedServers:
# no SRV record, fall back..
return self.domain, self.service
if not self.servers and self.orderedServers:
# start new round
self.servers = self.orderedServers
self.orderedServers = []
assert self.servers
self.servers.sort(self._serverCmp)
minPriority = self.servers[0][0]
weightIndex = zip(xrange(len(self.servers)),
[x[1] for x in self.servers if x[0] == minPriority])
weightSum = reduce(lambda x, y: (None, x[1] + y[1]), weightIndex,
(None, 0))[1]
rand = random.randint(0, weightSum)
for index, weight in weightIndex:
weightSum -= weight
if weightSum <= 0:
chosen = self.servers[index]
del self.servers[index]
self.orderedServers.append(chosen)
p, w, host, port = chosen
return host, port
raise RuntimeError, 'Impossible %s pickServer result.' % self.__class__.__name__
def pickServer(self):
assert self.servers is not None
assert self.orderedServers is not None
if not self.servers and not self.orderedServers:
# no SRV record, fall back..
return self.domain, self.service
if not self.servers and self.orderedServers:
# start new round
self.servers = self.orderedServers
self.orderedServers = []
assert self.servers
self.servers.sort(self._serverCmp)
minPriority=self.servers[0][0]
weightIndex = zip(xrange(len(self.servers)), [x[1] for x in self.servers
if x[0]==minPriority])
weightSum = reduce(lambda x, y: (None, x[1]+y[1]), weightIndex, (None, 0))[1]
rand = random.randint(0, weightSum)
for index, weight in weightIndex:
weightSum -= weight
if weightSum <= 0:
chosen = self.servers[index]
del self.servers[index]
self.orderedServers.append(chosen)
p, w, host, port = chosen
return host, port
raise RuntimeError, 'Impossible %s pickServer result.' % self.__class__.__name__
def lineReceived(self, line):
if not line.startswith('$'):
if self.ignore_invalid_sentence:
return
raise InvalidSentence("%r does not begin with $" % (line,))
# message is everything between $ and *, checksum is xor of all ASCII values of the message
strmessage, checksum = line[1:].strip().split('*')
message = strmessage.split(',')
sentencetype, message = message[0], message[1:]
dispatch = self.dispatch.get(sentencetype, None)
if (not dispatch) and (not self.ignore_unknown_sentencetypes):
raise InvalidSentence("sentencetype %r" % (sentencetype,))
if not self.ignore_checksum_mismatch:
checksum, calculated_checksum = int(checksum, 16), reduce(operator.xor, map(ord, strmessage))
if checksum != calculated_checksum:
raise InvalidChecksum("Given 0x%02X != 0x%02X" % (checksum, calculated_checksum))
handler = getattr(self, "handle_%s" % dispatch, None)
decoder = getattr(self, "decode_%s" % dispatch, None)
if not (dispatch and handler and decoder):
# missing dispatch, handler, or decoder
return
# return handler(*decoder(*message))
try:
decoded = decoder(*message)
except Exception, e:
raise InvalidSentence("%r is not a valid %s (%s) sentence" % (line, sentencetype, dispatch))
def lineReceived(self, line):
if not line.startswith('\02'):
raise InvalidSentence("%r does not begin with \\02" % (line,))
rfid, checksum = line[1:-2], line[-2:]
checksum, calculated_checksum = int(checksum, 16), reduce(operator.xor, [int(rfid[x:x+2], 16) for x in range(0,len(rfid), 2)])
if checksum != calculated_checksum:
raise InvalidChecksum("Given 0x%02X != 0x%02X" % (checksum, calculated_checksum))
return self.handle_rfid(rfid)
def test_zoneTransfer(self):
"""
Test DNS 'AXFR' queries (Zone transfer)
"""
default_ttl = soa_record.expire
results = [copy.copy(r) for r in reduce(operator.add, test_domain_com.records.values())]
for r in results:
if r.ttl is None:
r.ttl = default_ttl
return self.namesTest(
self.resolver.lookupZone('test-domain.com').addCallback(lambda r: (r[0][:-1],)),
results
)
def test_zoneTransfer(self):
"""
Test DNS 'AXFR' queries (Zone transfer)
"""
default_ttl = soa_record.expire
results = [copy.copy(r) for r in reduce(operator.add, test_domain_com.records.values())]
for r in results:
if r.ttl is None:
r.ttl = default_ttl
return self.namesTest(
self.resolver.lookupZone('test-domain.com').addCallback(lambda r: (r[0][:-1],)),
results
)
def jelly_decimal(self, d):
"""
Jelly a decimal object.
@param d: a decimal object to serialize.
@type d: C{decimal.Decimal}
@return: jelly for the decimal object.
@rtype: C{list}
"""
sign, guts, exponent = d.as_tuple()
value = reduce(lambda left, right: left * 10 + right, guts)
if sign:
value = -value
return ['decimal', value, exponent]
def jelly_decimal(self, d):
"""
Jelly a decimal object.
@param d: a decimal object to serialize.
@type d: C{decimal.Decimal}
@return: jelly for the decimal object.
@rtype: C{list}
"""
sign, guts, exponent = d.as_tuple()
value = reduce(lambda left, right: left * 10 + right, guts)
if sign:
value = -value
return ['decimal', value, exponent]
def _validateChecksum(sentence):
"""
Validates the checksum of an NMEA sentence.
@param sentence: The NMEA sentence to check the checksum of.
@type sentence: C{str}
@raise ValueError: If the sentence has an invalid checksum.
Simply returns on sentences that either don't have a checksum,
or have a valid checksum.
"""
if sentence[-3] == '*': # Sentence has a checksum
reference, source = int(sentence[-2:], 16), sentence[1:-3]
computed = reduce(operator.xor, (ord(x) for x in source))
if computed != reference:
raise base.InvalidChecksum("%02x != %02x" % (computed, reference))
def _validateChecksum(sentence):
"""
Validates the checksum of an NMEA sentence.
@param sentence: The NMEA sentence to check the checksum of.
@type sentence: C{bytes}
@raise ValueError: If the sentence has an invalid checksum.
Simply returns on sentences that either don't have a checksum,
or have a valid checksum.
"""
if sentence[-3:-2] == b'*': # Sentence has a checksum
reference, source = int(sentence[-2:], 16), sentence[1:-3]
computed = reduce(operator.xor, [ord(x) for x in iterbytes(source)])
if computed != reference:
raise base.InvalidChecksum("%02x != %02x" % (computed, reference))
def test_reduce(self):
"""
L{reduce} should behave like the builtin reduce.
"""
self.assertEqual(15, reduce(lambda x, y: x + y, [1, 2, 3, 4, 5]))
self.assertEqual(16, reduce(lambda x, y: x + y, [1, 2, 3, 4, 5], 1))
