opendaylight：不一致 api 响应

Question

我已经启动了 Opendaylight 并且运行但是当我尝试通过 REST 配置它时 api,

执行完全相同的请求，第一次出现异常，第二次出现配置已存在的错误消息。

请参阅下面的示例，该示例发出了 2 次相同的请求。一个导致异常，另一个 returns 响应

我想问你：

我在哪里可以解决这个问题？

我正在尝试寻找一些诊断方法 restful 用于 Opendaylight BGP 配置的 GET 命令，用于例子;显示 BGP session/group/neighbor 的所有 BGP 属性。我在哪里可以找到它？

In [9]: cmd = """  <neighbor xmlns="urn:opendaylight:params:xml:ns:yang:bgp:openconfig-extensions">
   ...:     <neighbor-address>10.20.14.1</neighbor-address>
   ...:     <afi-safis>
   ...:         <afi-safi>
   ...:             <afi-safi-name>LINKSTATE</afi-safi-name>
   ...:         </afi-safi>
   ...:     </afi-safis>
   ...: </neighbor>
   ...: """

In [10]: url = "/restconf/config/openconfig-network-instance:network-instances/network-instance/global-bgp/openconfig-network-instance:protocols/protocol/openconfig-policy-types:BGP/bgp-example/bgp/ne
    ...: ighbors"

In [11]: 

In [11]: requests.post('http://{}:{}{}'.format(odl['api']['ipaddr'],odl['api']['port'],url), auth=auth, headers=headers, data=cmd).json()
---------------------------------------------------------------------------
JSONDecodeError                           Traceback (most recent call last)
<ipython-input-11-6c5beab7d9fb> in <module>()
----> 1 requests.post('http://{}:{}{}'.format(odl['api']['ipaddr'],odl['api']['port'],url), auth=auth, headers=headers, data=cmd).json()

/usr/lib/python3.6/site-packages/requests/models.py in json(self, **kwargs)
    894                     # used.
    895                     pass
--> 896         return complexjson.loads(self.text, **kwargs)
    897 
    898     @property

/usr/lib64/python3.6/json/__init__.py in loads(s, encoding, cls, object_hook, parse_float, parse_int, parse_constant, object_pairs_hook, **kw)
    352             parse_int is None and parse_float is None and
    353             parse_constant is None and object_pairs_hook is None and not kw):
--> 354         return _default_decoder.decode(s)
    355     if cls is None:
    356         cls = JSONDecoder

/usr/lib64/python3.6/json/decoder.py in decode(self, s, _w)
    337 
    338         """
--> 339         obj, end = self.raw_decode(s, idx=_w(s, 0).end())
    340         end = _w(s, end).end()
    341         if end != len(s):

/usr/lib64/python3.6/json/decoder.py in raw_decode(self, s, idx)
    355             obj, end = self.scan_once(s, idx)
    356         except StopIteration as err:
--> 357             raise JSONDecodeError("Expecting value", s, err.value) from None
    358         return obj, end

JSONDecodeError: Expecting value: line 1 column 1 (char 0)

In [12]: requests.post('http://{}:{}{}'.format(odl['api']['ipaddr'],odl['api']['port'],url), auth=auth, headers=headers, data=cmd).json()
Out[12]: 
{'errors': {'error': [{'error-type': 'protocol',
    'error-tag': 'data-exists',
    'error-message': 'Data already exists for path: /(http://openconfig.net/yang/network-instance?revision=2015-10-18)network-instances/network-instance/network-instance[{(http://openconfig.net/yang/network-instance?revision=2015-10-18)name=global-bgp}]/protocols/protocol/protocol[{(http://openconfig.net/yang/network-instance?revision=2015-10-18)identifier=(http://openconfig.net/yang/policy-types?revision=2015-10-09)BGP, (http://openconfig.net/yang/network-instance?revision=2015-10-18)name=bgp-example}]/AugmentationIdentifier{childNames=[(urn:opendaylight:params:xml:ns:yang:bgp:openconfig-extensions?revision=2017-12-07)bgp]}/(urn:opendaylight:params:xml:ns:yang:bgp:openconfig-extensions?revision=2017-12-07)bgp/neighbors/neighbor/neighbor[{(urn:opendaylight:params:xml:ns:yang:bgp:openconfig-extensions?revision=2017-12-07)neighbor-address=10.20.14.1}]'}]}}

Answer 1

您正在使用 POST，这意味着如果不存在则创建，因此第二个请求正确返回了 RESTCONF RFC 中指定的 "data-exists" 错误。

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