return self._func(**kwargs)
+class VPPApiError(Exception):
+ pass
+
+
+class VPPNotImplementedError(NotImplementedError):
+ pass
+
+
+class VPPIOError(IOError):
+ pass
+
+
+class VPPRuntimeError(RuntimeError):
+ pass
+
+
+class VPPValueError(ValueError):
+ pass
+
+
class VPP(object):
"""VPP interface.
provides a means to register a callback function to receive
these messages in a background thread.
"""
+ VPPApiError = VPPApiError
+ VPPRuntimeError = VPPRuntimeError
+ VPPValueError = VPPValueError
+ VPPNotImplementedError = VPPNotImplementedError
+ VPPIOError = VPPIOError
def process_json_file(self, apidef_file):
api = json.load(apidef_file)
if len(unresolved) == 0:
break
if i > 3:
- raise ValueError('Unresolved type definitions {}'
- .format(unresolved))
+ raise VPPValueError('Unresolved type definitions {}'
+ .format(unresolved))
types = unresolved
i += 1
for m in api['messages']:
try:
self.messages[m[0]] = VPPMessage(m[0], m[1:])
- except NotImplementedError:
+ except VPPNotImplementedError:
self.logger.error('Not implemented error for {}'.format(m[0]))
def __init__(self, apifiles=None, testmode=False, async_thread=True,
if testmode:
apifiles = []
else:
- raise
+ raise VPPRuntimeError
for file in apifiles:
with open(file) as apidef_file:
# Basic sanity check
if len(self.messages) == 0 and not testmode:
- raise ValueError(1, 'Missing JSON message definitions')
+ raise VPPValueError(1, 'Missing JSON message definitions')
self.transport = VppTransport(self, read_timeout=read_timeout,
server_address=server_address)
if api_dir is None:
api_dir = cls.find_api_dir()
if api_dir is None:
- raise RuntimeError("api_dir cannot be located")
+ raise VPPApiError("api_dir cannot be located")
if isinstance(patterns, list) or isinstance(patterns, tuple):
patterns = [p.strip() + '.api.json' for p in patterns]
@property
def api(self):
if not hasattr(self, "_api"):
- raise Exception("Not connected, api definitions not available")
+ raise VPPApiError("Not connected, api definitions not available")
return self._api
def make_function(self, msg, i, multipart, do_async):
rv = self.transport.connect(name.encode(), pfx, msg_handler, rx_qlen)
if rv != 0:
- raise IOError(2, 'Connect failed')
+ raise VPPIOError(2, 'Connect failed')
self.vpp_dictionary_maxid = self.transport.msg_table_max_index()
self._register_functions(do_async=do_async)
# No context -> async notification that we feed to the callback
self.message_queue.put_nowait(r)
else:
- raise IOError(2, 'RPC reply message received in event handler')
+ raise VPPIOError(2, 'RPC reply message received in event handler')
def decode_incoming_msg(self, msg):
if not msg:
#
msgobj = self.id_msgdef[i]
if not msgobj:
- raise IOError(2, 'Reply message undefined')
+ raise VPPIOError(2, 'Reply message undefined')
r, size = msgobj.unpack(msg)
return r
def validate_args(self, msg, kwargs):
d = set(kwargs.keys()) - set(msg.field_by_name.keys())
if d:
- raise ValueError('Invalid argument {} to {}'
+ raise VPPValueError('Invalid argument {} to {}'
.format(list(d), msg.name))
def _call_vpp(self, i, msg, multipart, **kwargs):
while (True):
msg = self.transport.read()
if not msg:
- raise IOError(2, 'VPP API client: read failed')
+ raise VPPIOError(2, 'VPP API client: read failed')
r = self.decode_incoming_msg(msg)
msgname = type(r).__name__
if context not in r or r.context == 0 or context != r.context: