diff options
Diffstat (limited to 'src/vpp-api')
| -rwxr-xr-x | src/vpp-api/python/vpp_papi/tests/test_vpp_serializer.py | 92 | ||||
| -rw-r--r-- | src/vpp-api/python/vpp_papi/vpp_format.py | 234 | ||||
| -rw-r--r-- | src/vpp-api/python/vpp_papi/vpp_papi.py | 22 | ||||
| -rw-r--r-- | src/vpp-api/python/vpp_papi/vpp_serializer.py | 138 |
4 files changed, 266 insertions, 220 deletions
diff --git a/src/vpp-api/python/vpp_papi/tests/test_vpp_serializer.py b/src/vpp-api/python/vpp_papi/tests/test_vpp_serializer.py index ba3190cadf9..ca3afc4dcef 100755 --- a/src/vpp-api/python/vpp_papi/tests/test_vpp_serializer.py +++ b/src/vpp-api/python/vpp_papi/tests/test_vpp_serializer.py @@ -4,10 +4,10 @@ import unittest from vpp_papi.vpp_serializer import VPPType, VPPEnumType from vpp_papi.vpp_serializer import VPPUnionType, VPPMessage from vpp_papi.vpp_serializer import VPPTypeAlias -from vpp_papi.vpp_format import VPPFormat from socket import inet_pton, AF_INET, AF_INET6 import logging import sys +from ipaddress import * class TestAddType(unittest.TestCase): @@ -27,8 +27,10 @@ class TestAddType(unittest.TestCase): af = VPPEnumType('vl_api_address_family_t', [["ADDRESS_IP4", 0], ["ADDRESS_IP6", 1], {"enumtype": "u32"}]) - ip4 = VPPType('vl_api_ip4_address_t', [['u8', 'address', 4]]) - ip6 = VPPType('vl_api_ip6_address_t', [['u8', 'address', 16]]) + ip4 = VPPTypeAlias('vl_api_ip4_address_t', {'type': 'u8', + 'length': 4}) + ip6 = VPPTypeAlias('vl_api_ip6_address_t', {'type': 'u8', + 'length': 16}) VPPUnionType('vl_api_address_union_t', [["vl_api_ip4_address_t", "ip4"], ["vl_api_ip6_address_t", "ip6"]]) @@ -47,41 +49,34 @@ class TestAddType(unittest.TestCase): 'vla_address'], ['u8', 'is_cool']]) - b = ip4.pack({'address': inet_pton(AF_INET, '1.1.1.1')}) + b = ip4.pack(inet_pton(AF_INET, '1.1.1.1')) self.assertEqual(len(b), 4) nt, size = ip4.unpack(b) - self.assertEqual(nt.address, inet_pton(AF_INET, '1.1.1.1')) + self.assertEqual(str(nt), '1.1.1.1') - b = ip6.pack({'address': inet_pton(AF_INET6, '1::1')}) + b = ip6.pack(inet_pton(AF_INET6, '1::1')) self.assertEqual(len(b), 16) b = address.pack({'af': af.ADDRESS_IP4, 'un': - {'ip4': - {'address': inet_pton(AF_INET, '2.2.2.2')}}}) + {'ip4': inet_pton(AF_INET, '2.2.2.2')}}) self.assertEqual(len(b), 20) nt, size = address.unpack(b) - self.assertEqual(nt.af, af.ADDRESS_IP4) - self.assertEqual(nt.un.ip4.address, - inet_pton(AF_INET, '2.2.2.2')) - self.assertEqual(nt.un.ip6.address, - inet_pton(AF_INET6, '0202:0202::')) + self.assertEqual(str(nt), '2.2.2.2') # List of addresses address_list = [] for i in range(4): address_list.append({'af': af.ADDRESS_IP4, 'un': - {'ip4': - {'address': inet_pton(AF_INET, '2.2.2.2')}}}) + {'ip4': inet_pton(AF_INET, '2.2.2.2')}}) b = va_address_list.pack({'count': len(address_list), 'addresses': address_list}) self.assertEqual(len(b), 81) nt, size = va_address_list.unpack(b) - self.assertEqual(nt.addresses[0].un.ip4.address, - inet_pton(AF_INET, '2.2.2.2')) + self.assertEqual(str(nt.addresses[0]), '2.2.2.2') b = message_with_va_address_list.pack({'vla_address': {'count': len(address_list), @@ -97,6 +92,12 @@ class TestAddType(unittest.TestCase): {"enumtype": "u32"}]) ip4 = VPPTypeAlias('vl_api_ip4_address_t', {'type': 'u8', 'length': 4}) + b = ip4.pack('1.1.1.1') + self.assertEqual(len(b), 4) + nt, size = ip4.unpack(b) + + self.assertEqual(str(nt), '1.1.1.1') + ip6 = VPPTypeAlias('vl_api_ip6_address_t', {'type': 'u8', 'length': 16}) VPPUnionType('vl_api_address_union_t', @@ -108,44 +109,65 @@ class TestAddType(unittest.TestCase): ['vl_api_address_union_t', 'un']]) prefix = VPPType('vl_api_prefix_t', - [['vl_api_address_t', 'address'], - ['u8', 'address_length']]) + [['vl_api_address_t', 'address'], + ['u8', 'address_length']]) message = VPPMessage('svs', - [['vl_api_prefix_t', 'prefix']]) + [['vl_api_prefix_t', 'prefix']]) message_addr = VPPMessage('svs_address', [['vl_api_address_t', 'address']]) b = message_addr.pack({'address': "1::1"}) self.assertEqual(len(b), 20) nt, size = message_addr.unpack(b) - self.assertEqual("1::1", VPPFormat.unformat(nt.address)) + self.assertEqual("1::1", str(nt.address)) b = message_addr.pack({'address': "1.1.1.1"}) self.assertEqual(len(b), 20) nt, size = message_addr.unpack(b) - self.assertEqual("1.1.1.1", VPPFormat.unformat(nt.address)) + self.assertEqual("1.1.1.1", str(nt.address)) - b = message.pack({'prefix': "1.1.1.1/24"}) + b = message.pack({'prefix': "1.1.1.0/24"}) self.assertEqual(len(b), 21) nt, size = message.unpack(b) - self.assertEqual("1.1.1.1/24", VPPFormat.unformat(nt.prefix)) + self.assertEqual("1.1.1.0/24", str(nt.prefix)) message_array = VPPMessage('address_array', - [['vl_api_ip4_address_t', + [['vl_api_ip6_address_t', 'addresses', 2]]) - b = message_array.pack({'addresses': ["1::1", "2::2"]}) - self.assertEqual(len(b), 8) - + b = message_array.pack({'addresses': [IPv6Address(u"1::1"), "2::2"]}) + self.assertEqual(len(b), 32) message_array_vla = VPPMessage('address_array_vla', [['u32', 'num'], - ['vl_api_ip4_address_t', + ['vl_api_ip6_address_t', 'addresses', 0, 'num']]) b = message_array_vla.pack({'addresses': ["1::1", "2::2"], 'num': 2}) - self.assertEqual(len(b), 12) + self.assertEqual(len(b), 36) + + message_array4 = VPPMessage('address_array4', + [['vl_api_ip4_address_t', + 'addresses', 2]]) + b = message_array4.pack({'addresses': ["1.1.1.1", "2.2.2.2"]}) + self.assertEqual(len(b), 8) + b = message_array4.pack({'addresses': [IPv4Address(u"1.1.1.1"), + "2.2.2.2"]}) + self.assertEqual(len(b), 8) + + message = VPPMessage('address', [['vl_api_address_t', 'address']]) + b = message.pack({'address': '1::1'}) + self.assertEqual(len(b), 20) + b = message.pack({'address': '1.1.1.1'}) + self.assertEqual(len(b), 20) + message = VPPMessage('prefix', [['vl_api_prefix_t', 'prefix']]) + b = message.pack({'prefix': '1::1/130'}) + self.assertEqual(len(b), 21) + b = message.pack({'prefix': IPv6Network(u'1::/119')}) + self.assertEqual(len(b), 21) + b = message.pack({'prefix': IPv4Network(u'1.1.0.0/16')}) + self.assertEqual(len(b), 21) def test_zero_vla(self): '''Default zero'ed out for VLAs''' list = VPPType('vl_api_list_t', - [['u8', 'count', 10]]) + [['u8', 'count', 10]]) # Define an embedded VLA type valist = VPPType('vl_api_valist_t', @@ -153,12 +175,12 @@ class TestAddType(unittest.TestCase): ['u8', 'string', 0, 'count']]) # Define a message vamessage = VPPMessage('vamsg', - [['vl_api_valist_t', 'valist'], - ['u8', 'is_something']]) + [['vl_api_valist_t', 'valist'], + ['u8', 'is_something']]) message = VPPMessage('msg', - [['vl_api_list_t', 'list'], - ['u8', 'is_something']]) + [['vl_api_list_t', 'list'], + ['u8', 'is_something']]) # Pack message without VLA specified b = message.pack({'is_something': 1}) diff --git a/src/vpp-api/python/vpp_papi/vpp_format.py b/src/vpp-api/python/vpp_papi/vpp_format.py index 908606a92cc..1b880ecd248 100644 --- a/src/vpp-api/python/vpp_papi/vpp_format.py +++ b/src/vpp-api/python/vpp_papi/vpp_format.py @@ -15,137 +15,107 @@ from socket import inet_pton, inet_ntop, AF_INET6, AF_INET import socket +import ipaddress +# Copies from vl_api_address_t definition +ADDRESS_IP4 = 0 +ADDRESS_IP6 = 1 -class VPPFormatError(Exception): - pass - - -class VPPFormat(object): - VPPFormatError = VPPFormatError - - @staticmethod - def format_vl_api_ip6_prefix_t(args): - prefix, len = args.split('/') - return {'prefix': {'address': inet_pton(AF_INET6, prefix)}, - 'len': int(len)} - - @staticmethod - def unformat_vl_api_ip6_prefix_t(args): - return "{}/{}".format(inet_ntop(AF_INET6, args.prefix), - args.len) - - @staticmethod - def format_vl_api_ip4_prefix_t(args): - prefix, len = args.split('/') - return {'prefix': {'address': inet_pton(AF_INET, prefix)}, - 'len': int(len)} - - @staticmethod - def unformat_vl_api_ip4_prefix_t(args): - return "{}/{}".format(inet_ntop(AF_INET, args.prefix), - args.len) - - @staticmethod - def format_vl_api_ip6_address_t(args): - return {'address': inet_pton(AF_INET6, args)} - - @staticmethod - def format_vl_api_ip4_address_t(args): - return {'address': inet_pton(AF_INET, args)} - - @staticmethod - def format_vl_api_address_t(args): - try: - return {'un': {'ip6': inet_pton(AF_INET6, args)}, - 'af': int(1)} - except socket.error as e: - return {'un': {'ip4': inet_pton(AF_INET, args)}, - 'af': int(0)} - - @staticmethod - def unformat_vl_api_address_t(arg): - if arg.af == 1: - return inet_ntop(AF_INET6, arg.un.ip6) - if arg.af == 0: - return inet_ntop(AF_INET, arg.un.ip4) - raise VPPFormatError - - @staticmethod - def format_vl_api_prefix_t(args): - prefix, len = args.split('/') - return {'address': VPPFormat.format_vl_api_address_t(prefix), - 'address_length': int(len)} - - @staticmethod - def unformat_vl_api_prefix_t(arg): - if arg.address.af == 1: - return "{}/{}".format(inet_ntop(AF_INET6, - arg.address.un.ip6), - arg.address_length) - if arg.address.af == 0: - return "{}/{}".format(inet_ntop(AF_INET, - arg.address.un.ip4), - arg.address_length) - raise VPPFormatError - - @staticmethod - def format_u8(args): - try: - return int(args) - except Exception as e: - return args.encode() - - @staticmethod - def format(typename, args): - try: - return getattr(VPPFormat, 'format_' + typename)(args) - except AttributeError: - # Default - return (int(args)) - - @staticmethod - def unformat_bytes(args): - try: - return args.decode('utf-8') - except ValueError as e: - return args - - @staticmethod - def unformat_list(args): - s = '[' - for f in args: - t = type(f).__name__ - if type(f) is int: - s2 = str(f) - else: - s2 = VPPFormat.unformat_t(t, f) - s += '{} '.format(s2) - return s[:-1] + ']' - - @staticmethod - def unformat(args): - s = '' - return VPPFormat.unformat_t(type(args).__name__, args) - ''' - for i, f in enumerate(args): - print('F', f) - t = type(f).__name__ - if type(f) is int: - s2 = str(f) - else: - s2 = VPPFormat.unformat_t(t, f) - s += '{} {} '.format(args._fields[i], s2) - return s[:-1] - ''' - - @staticmethod - def unformat_t(typename, args): - try: - return getattr(VPPFormat, 'unformat_' + typename)(args) - except AttributeError: - # Type without explicit override - return VPPFormat.unformat(args) - - # Default handling - return args +# +# Type conversion for input arguments and return values +# + + +def format_vl_api_address_t(args): + try: + return {'un': {'ip6': inet_pton(AF_INET6, args)}, + 'af': ADDRESS_IP6} + except socket.error as e: + return {'un': {'ip4': inet_pton(AF_INET, args)}, + 'af': ADDRESS_IP4} + + +def format_vl_api_prefix_t(args): + p, length = args.split('/') + return {'address': format_vl_api_address_t(p), + 'address_length': int(length)} + + +def format_vl_api_ip6_prefix_t(args): + p, length = args.split('/') + return {'prefix': inet_pton(AF_INET6, p), + 'len': int(length)} + + +def format_vl_api_ip4_prefix_t(args): + p, length = args.split('/') + return {'prefix': inet_pton(AF_INET, p), + 'len': int(length)} + + +conversion_table = { + 'vl_api_ip6_address_t': + { + 'IPv6Address': lambda o: o.packed, + 'str': lambda s: inet_pton(AF_INET6, s) + }, + 'vl_api_ip4_address_t': + { + 'IPv4Address': lambda o: o.packed, + 'str': lambda s: inet_pton(AF_INET, s) + }, + 'vl_api_ip6_prefix_t': + { + 'IPv6Network': lambda o: {'prefix': o.network_address.packed, + 'len': o.prefixlen}, + 'str': lambda s: format_vl_api_ip6_prefix_t(s) + }, + 'vl_api_ip4_prefix_t': + { + 'IPv4Network': lambda o: {'prefix': o.network_address.packed, + 'len': o.prefixlen}, + 'str': lambda s: format_vl_api_ip4_prefix_t(s) + }, + 'vl_api_address_t': + { + 'IPv4Address': lambda o: {'af': ADDRESS_IP4, 'un': {'ip4': o.packed}}, + 'IPv6Address': lambda o: {'af': ADDRESS_IP6, 'un': {'ip6': o.packed}}, + 'str': lambda s: format_vl_api_address_t(s) + }, + 'vl_api_prefix_t': + { + 'IPv4Network': lambda o: {'prefix': + {'af': ADDRESS_IP4, 'un': + {'ip4': o.network_address.packed}}, + 'len': o.prefixlen}, + 'IPv6Network': lambda o: {'prefix': + {'af': ADDRESS_IP6, 'un': + {'ip6': o.network_address.packed}}, + 'len': o.prefixlen}, + 'str': lambda s: format_vl_api_prefix_t(s) + }, +} + + +def unformat_api_address_t(o): + if o.af == 1: + return ipaddress.IPv6Address(o.un.ip6) + if o.af == 0: + return ipaddress.IPv4Address(o.un.ip4) + + +def unformat_api_prefix_t(o): + if isinstance(o.address, ipaddress.IPv4Address): + return ipaddress.IPv4Network((o.address, o.address_length), False) + if isinstance(o.address, ipaddress.IPv6Address): + return ipaddress.IPv6Network((o.address, o.address_length), False) + + +conversion_unpacker_table = { + 'vl_api_ip6_address_t': lambda o: ipaddress.IPv6Address(o), + 'vl_api_ip6_prefix_t': lambda o: ipaddress.IPv6Network((o.prefix, o.len)), + 'vl_api_ip4_address_t': lambda o: ipaddress.IPv4Address(o), + 'vl_api_ip4_prefix_t': lambda o: ipaddress.IPv4Network((o.prefix, o.len)), + 'vl_api_address_t': lambda o: unformat_api_address_t(o), + 'vl_api_prefix_t': lambda o: unformat_api_prefix_t(o), +} diff --git a/src/vpp-api/python/vpp_papi/vpp_papi.py b/src/vpp-api/python/vpp_papi/vpp_papi.py index c37334cd4e5..32abe14da94 100644 --- a/src/vpp-api/python/vpp_papi/vpp_papi.py +++ b/src/vpp-api/python/vpp_papi/vpp_papi.py @@ -28,7 +28,6 @@ import weakref import atexit from . vpp_serializer import VPPType, VPPEnumType, VPPUnionType, BaseTypes from . vpp_serializer import VPPMessage, vpp_get_type, VPPTypeAlias -from . vpp_format import VPPFormat if sys.version[0] == '2': import Queue as queue @@ -56,11 +55,11 @@ def vpp_atexit(vpp_weakref): vpp_instance.logger.debug('Cleaning up VPP on exit') vpp_instance.disconnect() - -def vpp_iterator(d): - if sys.version[0] == '2': +if sys.version[0] == '2': + def vpp_iterator(d): return d.iteritems() - else: +else: + def vpp_iterator(d): return d.items() @@ -409,7 +408,8 @@ class VPP(object): # Create function for client side messages. if name in self.services: - if 'stream' in self.services[name] and self.services[name]['stream']: + if 'stream' in self.services[name] and \ + self.services[name]['stream']: multipart = True else: multipart = False @@ -493,7 +493,7 @@ class VPP(object): else: raise VPPIOError(2, 'RPC reply message received in event handler') - def decode_incoming_msg(self, msg): + def decode_incoming_msg(self, msg, no_type_conversion=False): if not msg: self.logger.warning('vpp_api.read failed') return @@ -508,7 +508,7 @@ class VPP(object): if not msgobj: raise VPPIOError(2, 'Reply message undefined') - r, size = msgobj.unpack(msg) + r, size = msgobj.unpack(msg, ntc=no_type_conversion) return r def msg_handler_async(self, msg): @@ -535,7 +535,7 @@ class VPP(object): d = set(kwargs.keys()) - set(msg.field_by_name.keys()) if d: raise VPPValueError('Invalid argument {} to {}' - .format(list(d), msg.name)) + .format(list(d), msg.name)) def _call_vpp(self, i, msg, multipart, **kwargs): """Given a message, send the message and await a reply. @@ -560,6 +560,8 @@ class VPP(object): context = kwargs['context'] kwargs['_vl_msg_id'] = i + no_type_conversion = kwargs.pop('_no_type_conversion', False) + try: if self.transport.socket_index: kwargs['client_index'] = self.transport.socket_index @@ -582,7 +584,7 @@ class VPP(object): msg = self.transport.read() if not msg: raise VPPIOError(2, 'VPP API client: read failed') - r = self.decode_incoming_msg(msg) + r = self.decode_incoming_msg(msg, no_type_conversion) msgname = type(r).__name__ if context not in r or r.context == 0 or context != r.context: # Message being queued diff --git a/src/vpp-api/python/vpp_papi/vpp_serializer.py b/src/vpp-api/python/vpp_papi/vpp_serializer.py index 13721ff88d4..5dce03b6188 100644 --- a/src/vpp-api/python/vpp_papi/vpp_serializer.py +++ b/src/vpp-api/python/vpp_papi/vpp_serializer.py @@ -17,7 +17,10 @@ import struct import collections from enum import IntEnum import logging -from .vpp_format import VPPFormat +from . import vpp_format +import ipaddress +import sys +import socket # # Set log-level in application by doing e.g.: @@ -26,6 +29,32 @@ from .vpp_format import VPPFormat # logger = logging.getLogger(__name__) +if sys.version[0] == '2': + check = lambda d: type(d) is dict +else: + check = lambda d: type(d) is dict or type(d) is bytes + +def conversion_required(data, field_type): + if check(data): + return False + try: + if type(data).__name__ in vpp_format.conversion_table[field_type]: + return True + except KeyError: + return False + + +def conversion_packer(data, field_type): + t = type(data).__name__ + return types[field_type].pack(vpp_format. + conversion_table[field_type][t](data)) + + +def conversion_unpacker(data, field_type): + if field_type not in vpp_format.conversion_unpacker_table: + return data + return vpp_format.conversion_unpacker_table[field_type](data) + class BaseTypes(object): def __init__(self, type, elements=0): @@ -51,7 +80,7 @@ class BaseTypes(object): data = 0 return self.packer.pack(data) - def unpack(self, data, offset, result=None): + def unpack(self, data, offset, result=None, ntc=False): return self.packer.unpack_from(data, offset)[0], self.packer.size @@ -79,19 +108,21 @@ class FixedList_u8(object): self.packer = BaseTypes(field_type, num) self.size = self.packer.size - def pack(self, list, kwargs=None): + def pack(self, data, kwargs=None): """Packs a fixed length bytestring. Left-pads with zeros if input data is too short.""" - if not list: + if not data: return b'\x00' * self.size - if len(list) > self.num: + + if len(data) > self.num: raise VPPSerializerValueError( 'Fixed list length error for "{}", got: {}' ' expected: {}' - .format(self.name, len(list), self.num)) - return self.packer.pack(list) + .format(self.name, len(data), self.num)) + + return self.packer.pack(data) - def unpack(self, data, offset=0, result=None): + def unpack(self, data, offset=0, result=None, ntc=False): if len(data[offset:]) < self.num: raise VPPSerializerValueError( 'Invalid array length for "{}" got {}' @@ -105,6 +136,8 @@ class FixedList(object): self.num = num self.packer = types[field_type] self.size = self.packer.size * num + self.name = name + self.field_type = field_type def pack(self, list, kwargs): if len(list) != self.num: @@ -116,12 +149,12 @@ class FixedList(object): b += self.packer.pack(e) return b - def unpack(self, data, offset=0, result=None): + def unpack(self, data, offset=0, result=None, ntc=False): # Return a list of arguments result = [] total = 0 for e in range(self.num): - x, size = self.packer.unpack(data, offset) + x, size = self.packer.unpack(data, offset, ntc=ntc) result.append(x) offset += size total += size @@ -153,7 +186,7 @@ class VLAList(object): b += self.packer.pack(e) return b - def unpack(self, data, offset=0, result=None): + def unpack(self, data, offset=0, result=None, ntc=False): # Return a list of arguments total = 0 @@ -162,11 +195,11 @@ class VLAList(object): if result[self.index] == 0: return b'', 0 p = BaseTypes('u8', result[self.index]) - return p.unpack(data, offset) + return p.unpack(data, offset, ntc=ntc) r = [] for e in range(result[self.index]): - x, size = self.packer.unpack(data, offset) + x, size = self.packer.unpack(data, offset, ntc=ntc) r.append(x) offset += size total += size @@ -187,7 +220,7 @@ class VLAList_legacy(): b += self.packer.pack(e) return b - def unpack(self, data, offset=0, result=None): + def unpack(self, data, offset=0, result=None, ntc=False): total = 0 # Return a list of arguments if (len(data) - offset) % self.packer.size: @@ -196,7 +229,7 @@ class VLAList_legacy(): elements = int((len(data) - offset) / self.packer.size) r = [] for e in range(elements): - x, size = self.packer.unpack(data, offset) + x, size = self.packer.unpack(data, offset, ntc=ntc) r.append(x) offset += self.packer.size total += size @@ -227,7 +260,7 @@ class VPPEnumType(object): def pack(self, data, kwargs=None): return types['u32'].pack(data) - def unpack(self, data, offset=0, result=None): + def unpack(self, data, offset=0, result=None, ntc=False): x, size = types['u32'].unpack(data, offset) return self.enum(x), size @@ -272,31 +305,53 @@ class VPPUnionType(object): r[:len(b)] = b return r - def unpack(self, data, offset=0, result=None): + def unpack(self, data, offset=0, result=None, ntc=False): r = [] maxsize = 0 for k, p in self.packers.items(): - x, size = p.unpack(data, offset) + x, size = p.unpack(data, offset, ntc=ntc) if size > maxsize: maxsize = size r.append(x) return self.tuple._make(r), maxsize -def VPPTypeAlias(name, msgdef): - t = vpp_get_type(msgdef['type']) - if not t: - raise ValueError() - if 'length' in msgdef: - if msgdef['length'] == 0: +class VPPTypeAlias(object): + def __init__(self, name, msgdef): + self.name = name + t = vpp_get_type(msgdef['type']) + if not t: raise ValueError() - if msgdef['type'] == 'u8': - types[name] = FixedList_u8(name, msgdef['type'], - msgdef['length']) + if 'length' in msgdef: + if msgdef['length'] == 0: + raise ValueError() + if msgdef['type'] == 'u8': + self.packer = FixedList_u8(name, msgdef['type'], + msgdef['length']) + self.size = self.packer.size + else: + self.packer = FixedList(name, msgdef['type'], msgdef['length']) else: - types[name] = FixedList(name, msgdef['type'], msgdef['length']) - else: - types[name] = t + self.packer = t + self.size = t.size + + types[name] = self + + def pack(self, data, kwargs=None): + if data and conversion_required(data, self.name): + try: + return conversion_packer(data, self.name) + # Python 2 and 3 raises different exceptions from inet_pton + except(OSError, socket.error, TypeError): + pass + + return self.packer.pack(data, kwargs) + + def unpack(self, data, offset=0, result=None, ntc=False): + t, size = self.packer.unpack(data, offset, result, ntc=ntc) + if not ntc: + return conversion_unpacker(t, self.name), size + return t, size class VPPType(object): @@ -352,9 +407,12 @@ class VPPType(object): if not kwargs: kwargs = data b = bytes() - for i, a in enumerate(self.fields): - # Try one of the format functions + # Try one of the format functions + if data and conversion_required(data, self.name): + return conversion_packer(data, self.name) + + for i, a in enumerate(self.fields): if data and type(data) is not dict and a not in data: raise VPPSerializerValueError( "Invalid argument: {} expected {}.{}". @@ -367,33 +425,27 @@ class VPPType(object): else: arg = data[a] kwarg = kwargs[a] if a in kwargs else None - if isinstance(self.packers[i], VPPType): - try: - b += self.packers[i].pack(arg, kwarg) - except ValueError: - # Invalid argument, can we convert it? - arg = VPPFormat.format(self.packers[i].name, data[a]) - data[a] = arg - kwarg = arg - b += self.packers[i].pack(arg, kwarg) + b += self.packers[i].pack(arg, kwarg) else: b += self.packers[i].pack(arg, kwargs) return b - def unpack(self, data, offset=0, result=None): + def unpack(self, data, offset=0, result=None, ntc=False): # Return a list of arguments result = [] total = 0 for p in self.packers: - x, size = p.unpack(data, offset, result) + x, size = p.unpack(data, offset, result, ntc) if type(x) is tuple and len(x) == 1: x = x[0] result.append(x) offset += size total += size t = self.tuple._make(result) + if not ntc: + t = conversion_unpacker(t, self.name) return t, total |