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authorOle Troan <ot@cisco.com>2019-04-23 17:11:01 +0200
committerAndrew Yourtchenko <ayourtch@gmail.com>2019-04-29 12:07:02 +0000
commit9ac113815511f3ce37b56a1331d6491fc36f7db5 (patch)
tree574f66ce291ee75de2545a051be77a11bbaa43e2 /src/vpp-api/python
parentde146e5d5f7e919b423feeff3159c4ecd564c353 (diff)
API: Add support for limits to language.
string name [limit = 64]; Meta-data to do argument validation. Change-Id: I1f3e0f09b2d5285224399413d25206f77bd3f4b1 Signed-off-by: Ole Troan <ot@cisco.com>
Diffstat (limited to 'src/vpp-api/python')
-rwxr-xr-xsrc/vpp-api/python/vpp_papi/tests/test_vpp_serializer.py17
-rw-r--r--src/vpp-api/python/vpp_papi/vpp_serializer.py30
2 files changed, 40 insertions, 7 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 4fbda2a01af..ec7334712ab 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
@@ -3,12 +3,27 @@
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_serializer import VPPTypeAlias, VPPSerializerValueError
from socket import inet_pton, AF_INET, AF_INET6
import logging
import sys
from ipaddress import *
+class TestLimits(unittest.TestCase):
+ def test_limit(self):
+ limited_type = VPPType('limited_type_t',
+ [['string', 'name', {'limit': 16}]])
+ unlimited_type = VPPType('limited_type_t',
+ [['string', 'name']])
+
+
+ b = limited_type.pack({'name':'foobar'})
+ self.assertEqual(len(b), 10)
+ b = unlimited_type.pack({'name':'foobar'})
+ self.assertEqual(len(b), 10)
+
+ with self.assertRaises(VPPSerializerValueError):
+ b = limited_type.pack({'name':'foobar'*3})
class TestAddType(unittest.TestCase):
diff --git a/src/vpp-api/python/vpp_papi/vpp_serializer.py b/src/vpp-api/python/vpp_papi/vpp_serializer.py
index bd5f050bba9..d1093318ed0 100644
--- a/src/vpp-api/python/vpp_papi/vpp_serializer.py
+++ b/src/vpp-api/python/vpp_papi/vpp_serializer.py
@@ -96,14 +96,20 @@ class BaseTypes(object):
class String(object):
- def __init__(self):
+ def __init__(self, options):
self.name = 'string'
self.size = 1
self.length_field_packer = BaseTypes('u32')
+ self.limit = options['limit'] if 'limit' in options else None
def pack(self, list, kwargs=None):
if not list:
return self.length_field_packer.pack(0) + b""
+ if self.limit and len(list) > self.limit:
+ raise VPPSerializerValueError(
+ "Invalid argument length for: {}, {} maximum {}".
+ format(list, len(list), self.limit))
+
return self.length_field_packer.pack(len(list)) + list.encode('utf8')
def unpack(self, data, offset=0, result=None, ntc=False):
@@ -120,7 +126,7 @@ class String(object):
types = {'u8': BaseTypes('u8'), 'u16': BaseTypes('u16'),
'u32': BaseTypes('u32'), 'i32': BaseTypes('i32'),
'u64': BaseTypes('u64'), 'f64': BaseTypes('f64'),
- 'bool': BaseTypes('bool'), 'string': String()}
+ 'bool': BaseTypes('bool'), 'string': String}
def vpp_get_type(name):
@@ -416,7 +422,15 @@ class VPPType(object):
logger.debug('Unknown type {}'.format(f_type))
raise VPPSerializerValueError(
'Unknown message type {}'.format(f_type))
- if len(f) == 3: # list
+
+ l = len(f)
+ options = [x for x in f if type(x) is dict]
+ if len(options):
+ self.options = options[0]
+ l -= 1
+ else:
+ self.options = {}
+ if l == 3: # list
list_elements = f[2]
if list_elements == 0:
p = VLAList_legacy(f_name, f_type)
@@ -429,13 +443,17 @@ class VPPType(object):
p = FixedList(f_name, f_type, list_elements)
self.packers.append(p)
size += p.size
- elif len(f) == 4: # Variable length list
+ elif l == 4: # Variable length list
length_index = self.fields.index(f[3])
p = VLAList(f_name, f_type, f[3], length_index)
self.packers.append(p)
else:
- self.packers.append(types[f_type])
- size += types[f_type].size
+ if f_type == 'string':
+ p = types[f_type](self.options)
+ else:
+ p = types[f_type]
+ self.packers.append(p)
+ size += p.size
self.size = size
self.tuple = collections.namedtuple(name, self.fields, rename=True)