mirror of
https://github.com/openvswitch/ovs
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991559357f
These initial bindings pass a few hundred of the corresponding tests for C implementations of various bits of the Open vSwitch library API. The poorest part of them is actually the Python IDL interface in ovs.db.idl, which has not received enough attention yet. It appears to work, but it doesn't yet support writes (transactions) and it is difficult to use. I hope to improve it as it becomes clear what semantics Python applications actually want from an IDL.
73 lines
2.2 KiB
Python
73 lines
2.2 KiB
Python
# Copyright (c) 2009, 2010 Nicira Networks
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at:
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import re
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import uuid
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from ovs.db import error
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import ovs.db.parser
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class UUID(uuid.UUID):
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x = "[0-9a-fA-f]"
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uuidRE = re.compile("^(%s{8})-(%s{4})-(%s{4})-(%s{4})-(%s{4})(%s{8})$"
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% (x, x, x, x, x, x))
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def __init__(self, s):
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uuid.UUID.__init__(self, hex=s)
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@staticmethod
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def zero():
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return UUID('00000000-0000-0000-0000-000000000000')
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def is_zero(self):
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return self.int == 0
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@staticmethod
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def is_valid_string(s):
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return UUID.uuidRE.match(s) != None
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@staticmethod
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def from_string(s):
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if not UUID.is_valid_string(s):
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raise error.Error("%s is not a valid UUID" % s)
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return UUID(s)
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@staticmethod
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def from_json(json, symtab=None):
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try:
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s = ovs.db.parser.unwrap_json(json, "uuid", unicode)
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if not UUID.uuidRE.match(s):
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raise error.Error("\"%s\" is not a valid UUID" % s, json)
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return UUID(s)
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except error.Error, e:
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try:
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name = ovs.db.parser.unwrap_json(json, "named-uuid", unicode)
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except error.Error:
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raise e
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if name not in symtab:
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symtab[name] = uuid4()
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return symtab[name]
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def to_json(self):
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return ["uuid", str(self)]
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def cInitUUID(self, var):
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m = re.match(str(self))
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return ["%s.parts[0] = 0x%s;" % (var, m.group(1)),
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"%s.parts[1] = 0x%s%s;" % (var, m.group(2), m.group(3)),
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"%s.parts[2] = 0x%s%s;" % (var, m.group(4), m.group(5)),
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"%s.parts[3] = 0x%s;" % (var, m.group(6))]
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