def _resolve_address(self, address, family, cb):
"""
Use Pants' DNS client to asynchronously resolve the given
address.
========= ===================================================
Argument Description
========= ===================================================
address The address to resolve.
family The address family.
cb A callable taking two mandatory arguments and one
optional argument. The arguments are: the resolved
address, the socket family and error information,
respectively.
========= ===================================================
"""
# This is here to prevent an import-loop. pants.util.dns depends
# on pants._channel. Unfortunate, but necessary.
global dns
if dns is None:
from pants.util import dns
# UNIX addresses and INADDR_ANY don't need to be resolved.
if isinstance(address, basestring) or address[0] == '':
cb(address, family)
return
def dns_callback(status, cname, ttl, rdata):
if status == dns.DNS_NAMEERROR:
cb(None, None, NAME_ERROR)
return
if status != dns.DNS_OK or not rdata:
cb(address, family)
return
for i in rdata:
if ':' in i:
if not HAS_IPV6:
continue
cb((i,) + address[1:], socket.AF_INET6)
return
else:
cb((i,) + address[1:], socket.AF_INET)
return
else:
cb(None, None, FAMILY_ERROR)
if HAS_IPV6 and family == socket.AF_INET6:
qtype = dns.AAAA
else:
qtype = (dns.AAAA, dns.A)
dns.query(address[0], qtype, callback=dns_callback)
def _resolve_address(self, address, callback):
"""
Use Pants' DNS client to asynchronously resolve the given
address.
========= ===================================================
Argument Description
========= ===================================================
address The address to resolve.
callback A callable taking two mandatory arguments and one
optional argument. The arguments are: the resolved
address, the socket family and error information,
respectively.
========= ===================================================
"""
raise NotImplementedError("pants.util.dns is currently disabled")
# This is here to prevent an import-loop. pants.util.dns depends
# on pants._channel. Unfortunate, but necessary.
global dns
if dns is None:
from pants.util import dns
def dns_callback(status, cname, ttl, rdata):
if status != dns.DNS_OK:
# DNS errored. Assume it's a bad hostname.
callback(None, None, NAME_ERROR)
return
for addr in rdata:
family = socket.AF_INET6 if ':' in addr else 0
try:
result = socket.getaddrinfo(addr, address[1], family, 0, 0,
socket.AI_NUMERICHOST)
except socket.error:
continue
# It's a valid host.
result = result[0]
callback(result[-1], result[0])
return
# We didn't get any valid address.
callback(None, None, NAME_ERROR)
# Only query records that we can use.
if not HAS_IPV6:
qtype = dns.A
elif len(address) == 4:
qtype = dns.AAAA
else:
qtype = (dns.AAAA, dns.A)
dns.query(address[0], qtype, callback=dns_callback)
def _resolve_address(self, address, callback):
"""
Use Pants' DNS client to asynchronously resolve the given
address.
========= ===================================================
Argument Description
========= ===================================================
address The address to resolve.
callback A callable taking two mandatory arguments and one
optional argument. The arguments are: the resolved
address, the socket family and error information,
respectively.
========= ===================================================
"""
raise NotImplementedError("pants.util.dns is currently disabled")
# This is here to prevent an import-loop. pants.util.dns depends
# on pants._channel. Unfortunate, but necessary.
global dns
if dns is None:
from pants.util import dns
def dns_callback(status, cname, ttl, rdata):
if status != dns.DNS_OK:
# DNS errored. Assume it's a bad hostname.
callback(None, None, NAME_ERROR)
return
for addr in rdata:
family = socket.AF_INET6 if ':' in addr else 0
try:
result = socket.getaddrinfo(addr, address[1], family, 0, 0, socket.AI_NUMERICHOST)
except socket.error:
continue
# It's a valid host.
result = result[0]
callback(result[-1], result[0])
return
# We didn't get any valid address.
callback(None, None, NAME_ERROR)
# Only query records that we can use.
if not HAS_IPV6:
qtype = dns.A
elif len(address) == 4:
qtype = dns.AAAA
else:
qtype = (dns.AAAA, dns.A)
dns.query(address[0], qtype, callback=dns_callback)
