import weakref
import atexit
import time
-from . vpp_format import verify_enum_hint
-from . vpp_serializer import VPPType, VPPEnumType, VPPEnumFlagType, VPPUnionType
-from . vpp_serializer import VPPMessage, vpp_get_type, VPPTypeAlias
+from .vpp_format import verify_enum_hint
+from .vpp_serializer import VPPType, VPPEnumType, VPPEnumFlagType, VPPUnionType
+from .vpp_serializer import VPPMessage, vpp_get_type, VPPTypeAlias
try:
import VppTransport
except ModuleNotFoundError:
+
class V:
"""placeholder for VppTransport as the implementation is dependent on
VPPAPIClient's initialization values
VppTransport = V
-from . vpp_transport_socket import VppTransport
+from .vpp_transport_socket import VppTransport
-logger = logging.getLogger('vpp_papi')
+logger = logging.getLogger("vpp_papi")
logger.addHandler(logging.NullHandler())
-__all__ = ('FuncWrapper', 'VppApiDynamicMethodHolder',
- 'VppEnum', 'VppEnumType', 'VppEnumFlag',
- 'VPPIOError', 'VPPRuntimeError', 'VPPValueError',
- 'VPPApiClient', )
+__all__ = (
+ "FuncWrapper",
+ "VppApiDynamicMethodHolder",
+ "VppEnum",
+ "VppEnumType",
+ "VppEnumFlag",
+ "VPPIOError",
+ "VPPRuntimeError",
+ "VPPValueError",
+ "VPPApiClient",
+)
def metaclass(metaclass):
"""Clean up VPP connection on shutdown."""
vpp_instance = vpp_weakref()
if vpp_instance and vpp_instance.transport.connected:
- logger.debug('Cleaning up VPP on exit')
+ logger.debug("Cleaning up VPP on exit")
vpp_instance.disconnect()
def _vapi_af_name(self):
if 6 == self._version:
- return 'ip6'
+ return "ip6"
if 4 == self._version:
- return 'ip4'
+ return "ip4"
raise ValueError("Invalid _version.")
ipaddress._IPAddressBase.vapi_af = property(_vapi_af)
return self._func(**kwargs)
def __repr__(self):
- return '<FuncWrapper(func=<%s(%s)>)>' % (self.__name__, self.__doc__)
+ return "<FuncWrapper(func=<%s(%s)>)>" % (self.__name__, self.__doc__)
class VPPApiError(Exception):
# perhaps we're in the 'src/scripts' or 'src/vpp-api/python' dir;
# in which case, plot a course to likely places in the src tree
import __main__ as main
- if hasattr(main, '__file__'):
+
+ if hasattr(main, "__file__"):
# get the path of the calling script
localdir = os.path.dirname(os.path.realpath(main.__file__))
else:
def dmatch(dir):
"""Match dir against right-hand components of the script dir"""
- d = dir.split('/') # param 'dir' assumes a / separator
+ d = dir.split("/") # param 'dir' assumes a / separator
length = len(d)
return len(localdir_s) > length and localdir_s[-length:] == d
'variant' (typically '' or '_debug')"""
# Since 'core' and 'plugin' files are staged
# in separate directories, we target the parent dir.
- return os.path.sep.join((
- srcdir,
- 'build-root',
- 'install-vpp%s-native' % variant,
- 'vpp',
- 'share',
- 'vpp',
- 'api',
- ))
+ return os.path.sep.join(
+ (
+ srcdir,
+ "build-root",
+ "install-vpp%s-native" % variant,
+ "vpp",
+ "share",
+ "vpp",
+ "api",
+ )
+ )
srcdir = None
- if dmatch('src/scripts'):
+ if dmatch("src/scripts"):
srcdir = os.path.sep.join(localdir_s[:-2])
- elif dmatch('src/vpp-api/python'):
+ elif dmatch("src/vpp-api/python"):
srcdir = os.path.sep.join(localdir_s[:-3])
- elif dmatch('test'):
+ elif dmatch("test"):
# we're apparently running tests
srcdir = os.path.sep.join(localdir_s[:-1])
if srcdir:
# we're in the source tree, try both the debug and release
# variants.
- dirs.append(sdir(srcdir, '_debug'))
- dirs.append(sdir(srcdir, ''))
+ dirs.append(sdir(srcdir, "_debug"))
+ dirs.append(sdir(srcdir, ""))
# Test for staged copies of the scripts
# For these, since we explicitly know if we're running a debug versus
# release variant, target only the relevant directory
- if dmatch('build-root/install-vpp_debug-native/vpp/bin'):
+ if dmatch("build-root/install-vpp_debug-native/vpp/bin"):
srcdir = os.path.sep.join(localdir_s[:-4])
- dirs.append(sdir(srcdir, '_debug'))
- if dmatch('build-root/install-vpp-native/vpp/bin'):
+ dirs.append(sdir(srcdir, "_debug"))
+ if dmatch("build-root/install-vpp-native/vpp/bin"):
srcdir = os.path.sep.join(localdir_s[:-4])
- dirs.append(sdir(srcdir, ''))
+ dirs.append(sdir(srcdir, ""))
# finally, try the location system packages typically install into
- dirs.append(os.path.sep.join(('', 'usr', 'share', 'vpp', 'api')))
+ dirs.append(os.path.sep.join(("", "usr", "share", "vpp", "api")))
# check the directories for existence; first one wins
for dir in dirs:
return None
@classmethod
- def find_api_files(cls, api_dir=None, patterns='*'): # -> list
+ def find_api_files(cls, api_dir=None, patterns="*"): # -> list
"""Find API definition files from the given directory tree with the
given pattern. If no directory is given then find_api_dir() is used
to locate one. If no pattern is given then all definition files found
raise VPPApiError("api_dir cannot be located")
if isinstance(patterns, list) or isinstance(patterns, tuple):
- patterns = [p.strip() + '.api.json' for p in patterns]
+ patterns = [p.strip() + ".api.json" for p in patterns]
else:
- patterns = [p.strip() + '.api.json' for p in patterns.split(",")]
+ patterns = [p.strip() + ".api.json" for p in patterns.split(",")]
api_files = []
for root, dirnames, files in os.walk(api_dir):
services = {}
messages = {}
try:
- for t in api['enums']:
- t[0] = 'vl_api_' + t[0] + '_t'
- types[t[0]] = {'type': 'enum', 'data': t}
+ for t in api["enums"]:
+ t[0] = "vl_api_" + t[0] + "_t"
+ types[t[0]] = {"type": "enum", "data": t}
except KeyError:
pass
try:
- for t in api['enumflags']:
- t[0] = 'vl_api_' + t[0] + '_t'
- types[t[0]] = {'type': 'enum', 'data': t}
+ for t in api["enumflags"]:
+ t[0] = "vl_api_" + t[0] + "_t"
+ types[t[0]] = {"type": "enum", "data": t}
except KeyError:
pass
try:
- for t in api['unions']:
- t[0] = 'vl_api_' + t[0] + '_t'
- types[t[0]] = {'type': 'union', 'data': t}
+ for t in api["unions"]:
+ t[0] = "vl_api_" + t[0] + "_t"
+ types[t[0]] = {"type": "union", "data": t}
except KeyError:
pass
try:
- for t in api['types']:
- t[0] = 'vl_api_' + t[0] + '_t'
- types[t[0]] = {'type': 'type', 'data': t}
+ for t in api["types"]:
+ t[0] = "vl_api_" + t[0] + "_t"
+ types[t[0]] = {"type": "type", "data": t}
except KeyError:
pass
try:
- for t, v in api['aliases'].items():
- types['vl_api_' + t + '_t'] = {'type': 'alias', 'data': v}
+ for t, v in api["aliases"].items():
+ types["vl_api_" + t + "_t"] = {"type": "alias", "data": v}
except KeyError:
pass
try:
- services.update(api['services'])
+ services.update(api["services"])
except KeyError:
pass
while True:
unresolved = {}
for k, v in types.items():
- t = v['data']
+ t = v["data"]
if not vpp_get_type(k):
- if v['type'] == 'enum':
+ if v["type"] == "enum":
try:
VPPEnumType(t[0], t[1:])
except ValueError:
unresolved[k] = v
if not vpp_get_type(k):
- if v['type'] == 'enumflag':
+ if v["type"] == "enumflag":
try:
VPPEnumFlagType(t[0], t[1:])
except ValueError:
unresolved[k] = v
- elif v['type'] == 'union':
+ elif v["type"] == "union":
try:
VPPUnionType(t[0], t[1:])
except ValueError:
unresolved[k] = v
- elif v['type'] == 'type':
+ elif v["type"] == "type":
try:
VPPType(t[0], t[1:])
except ValueError:
unresolved[k] = v
- elif v['type'] == 'alias':
+ elif v["type"] == "alias":
try:
VPPTypeAlias(k, t)
except ValueError:
if len(unresolved) == 0:
break
if i > 3:
- raise VPPValueError('Unresolved type definitions {}'
- .format(unresolved))
+ raise VPPValueError("Unresolved type definitions {}".format(unresolved))
types = unresolved
i += 1
try:
- for m in api['messages']:
+ for m in api["messages"]:
try:
messages[m[0]] = VPPMessage(m[0], m[1:])
except VPPNotImplementedError:
### OLE FIXME
- logger.error('Not implemented error for {}'.format(m[0]))
+ logger.error("Not implemented error for {}".format(m[0]))
except KeyError:
pass
return messages, services
provides a means to register a callback function to receive
these messages in a background thread.
"""
+
apidir = None
VPPApiError = VPPApiError
VPPRuntimeError = VPPRuntimeError
VPPNotImplementedError = VPPNotImplementedError
VPPIOError = VPPIOError
-
- def __init__(self, *, apifiles=None, testmode=False, async_thread=True,
- logger=None, loglevel=None,
- read_timeout=5, use_socket=True,
- server_address='/run/vpp/api.sock'):
+ def __init__(
+ self,
+ *,
+ apifiles=None,
+ testmode=False,
+ async_thread=True,
+ logger=None,
+ loglevel=None,
+ read_timeout=5,
+ use_socket=True,
+ server_address="/run/vpp/api.sock",
+ ):
"""Create a VPP API object.
apifiles is a list of files containing API
"""
if logger is None:
logger = logging.getLogger(
- "{}.{}".format(__name__, self.__class__.__name__))
+ "{}.{}".format(__name__, self.__class__.__name__)
+ )
if loglevel is not None:
logger.setLevel(loglevel)
self.logger = logger
self.services = {}
self.id_names = []
self.id_msgdef = []
- self.header = VPPType('header', [['u16', 'msgid'],
- ['u32', 'client_index']])
+ self.header = VPPType("header", [["u16", "msgid"], ["u32", "client_index"]])
self.apifiles = []
self.event_callback = None
self.message_queue = queue.Queue()
# Basic sanity check
if len(self.messages) == 0 and not testmode:
- raise VPPValueError(1, 'Missing JSON message definitions')
- if not(verify_enum_hint(VppEnum.vl_api_address_family_t)):
- raise VPPRuntimeError("Invalid address family hints. "
- "Cannot continue.")
+ raise VPPValueError(1, "Missing JSON message definitions")
+ if not (verify_enum_hint(VppEnum.vl_api_address_family_t)):
+ raise VPPRuntimeError("Invalid address family hints. " "Cannot continue.")
- self.transport = VppTransport(self, read_timeout=read_timeout,
- server_address=server_address)
+ self.transport = VppTransport(
+ self, read_timeout=read_timeout, server_address=server_address
+ )
# Make sure we allow VPP to clean up the message rings.
atexit.register(vpp_atexit, weakref.ref(self))
class ContextId:
"""Multiprocessing-safe provider of unique context IDs."""
+
def __init__(self):
self.context = mp.Value(ctypes.c_uint, 0)
self.lock = mp.Lock()
with self.lock:
self.context.value += 1
return self.context.value
+
get_context = ContextId()
def get_type(self, name):
return self._api
def make_function(self, msg, i, multipart, do_async):
- if (do_async):
+ if do_async:
+
def f(**kwargs):
return self._call_vpp_async(i, msg, **kwargs)
+
else:
+
def f(**kwargs):
return self._call_vpp(i, msg, multipart, **kwargs)
f.__name__ = str(msg.name)
- f.__doc__ = ", ".join(["%s %s" %
- (msg.fieldtypes[j], k)
- for j, k in enumerate(msg.fields)])
+ f.__doc__ = ", ".join(
+ ["%s %s" % (msg.fieldtypes[j], k) for j, k in enumerate(msg.fields)]
+ )
f.msg = msg
return f
self.id_msgdef = [None] * (self.vpp_dictionary_maxid + 1)
self._api = VppApiDynamicMethodHolder()
for name, msg in self.messages.items():
- n = name + '_' + msg.crc[2:]
+ n = name + "_" + msg.crc[2:]
i = self.transport.get_msg_index(n)
if i > 0:
self.id_msgdef[i] = msg
f = self.make_function(msg, i, self.services[name], do_async)
setattr(self._api, name, FuncWrapper(f))
else:
- self.logger.debug(
- 'No such message type or failed CRC checksum: %s', n)
+ self.logger.debug("No such message type or failed CRC checksum: %s", n)
- def connect_internal(self, name, msg_handler, chroot_prefix, rx_qlen,
- do_async):
- pfx = chroot_prefix.encode('utf-8') if chroot_prefix else None
+ def connect_internal(self, name, msg_handler, chroot_prefix, rx_qlen, do_async):
+ pfx = chroot_prefix.encode("utf-8") if chroot_prefix else None
- rv = self.transport.connect(name, pfx,
- msg_handler, rx_qlen)
+ rv = self.transport.connect(name, pfx, msg_handler, rx_qlen)
if rv != 0:
- raise VPPIOError(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)
# Initialise control ping
- crc = self.messages['control_ping'].crc
+ crc = self.messages["control_ping"].crc
self.control_ping_index = self.transport.get_msg_index(
- ('control_ping' + '_' + crc[2:]))
- self.control_ping_msgdef = self.messages['control_ping']
+ ("control_ping" + "_" + crc[2:])
+ )
+ self.control_ping_msgdef = self.messages["control_ping"]
if self.async_thread:
- self.event_thread = threading.Thread(
- target=self.thread_msg_handler)
+ self.event_thread = threading.Thread(target=self.thread_msg_handler)
self.event_thread.daemon = True
self.event_thread.start()
else:
client and server.
"""
msg_handler = self.transport.get_callback(do_async)
- return self.connect_internal(name, msg_handler, chroot_prefix, rx_qlen,
- do_async)
+ return self.connect_internal(
+ name, msg_handler, chroot_prefix, rx_qlen, do_async
+ )
def connect_sync(self, name, chroot_prefix=None, rx_qlen=32):
"""Attach to VPP in synchronous mode. Application must poll for events.
client and server.
"""
- return self.connect_internal(name, None, chroot_prefix, rx_qlen,
- do_async=False)
+ return self.connect_internal(name, None, chroot_prefix, rx_qlen, do_async=False)
def disconnect(self):
"""Detach from VPP."""
# If we have a context, then use the context to find any
# request waiting for a reply
context = 0
- if hasattr(r, 'context') and r.context > 0:
+ if hasattr(r, "context") and r.context > 0:
context = r.context
if context == 0:
# No context -> async notification that we feed to the callback
self.message_queue.put_nowait(r)
else:
- raise VPPIOError(2, 'RPC reply message received in event handler')
+ raise VPPIOError(2, "RPC reply message received in event handler")
def has_context(self, msg):
if len(msg) < 10:
return False
- header = VPPType('header_with_context', [['u16', 'msgid'],
- ['u32', 'client_index'],
- ['u32', 'context']])
+ header = VPPType(
+ "header_with_context",
+ [["u16", "msgid"], ["u32", "client_index"], ["u32", "context"]],
+ )
(i, ci, context), size = header.unpack(msg, 0)
- if self.id_names[i] == 'rx_thread_exit':
+ if self.id_names[i] == "rx_thread_exit":
return
#
# Decode message and returns a tuple.
#
msgobj = self.id_msgdef[i]
- if 'context' in msgobj.field_by_name and context >= 0:
+ if "context" in msgobj.field_by_name and context >= 0:
return True
return False
def decode_incoming_msg(self, msg, no_type_conversion=False):
if not msg:
- logger.warning('vpp_api.read failed')
+ logger.warning("vpp_api.read failed")
return
(i, ci), size = self.header.unpack(msg, 0)
- if self.id_names[i] == 'rx_thread_exit':
+ if self.id_names[i] == "rx_thread_exit":
return
#
#
msgobj = self.id_msgdef[i]
if not msgobj:
- raise VPPIOError(2, 'Reply message undefined')
+ raise VPPIOError(2, "Reply message undefined")
r, size = msgobj.unpack(msg, ntc=no_type_conversion)
return r
def _control_ping(self, context):
"""Send a ping command."""
- self._call_vpp_async(self.control_ping_index,
- self.control_ping_msgdef,
- context=context)
+ self._call_vpp_async(
+ self.control_ping_index, self.control_ping_msgdef, context=context
+ )
def validate_args(self, msg, kwargs):
d = set(kwargs.keys()) - set(msg.field_by_name.keys())
if d:
- raise VPPValueError('Invalid argument {} to {}'
- .format(list(d), msg.name))
+ raise VPPValueError("Invalid argument {} to {}".format(list(d), msg.name))
def _add_stat(self, name, ms):
if not name in self.stats:
- self.stats[name] = {'max': ms, 'count': 1, 'avg': ms}
+ self.stats[name] = {"max": ms, "count": 1, "avg": ms}
else:
- if ms > self.stats[name]['max']:
- self.stats[name]['max'] = ms
- self.stats[name]['count'] += 1
- n = self.stats[name]['count']
- self.stats[name]['avg'] = self.stats[name]['avg'] * (n - 1) / n + ms / n
+ if ms > self.stats[name]["max"]:
+ self.stats[name]["max"] = ms
+ self.stats[name]["count"] += 1
+ n = self.stats[name]["count"]
+ self.stats[name]["avg"] = self.stats[name]["avg"] * (n - 1) / n + ms / n
def get_stats(self):
- s = '\n=== API PAPI STATISTICS ===\n'
- s += '{:<30} {:>4} {:>6} {:>6}\n'.format('message', 'cnt', 'avg', 'max')
- for n in sorted(self.stats.items(), key=lambda v: v[1]['avg'], reverse=True):
- s += '{:<30} {:>4} {:>6.2f} {:>6.2f}\n'.format(n[0], n[1]['count'],
- n[1]['avg'], n[1]['max'])
+ s = "\n=== API PAPI STATISTICS ===\n"
+ s += "{:<30} {:>4} {:>6} {:>6}\n".format("message", "cnt", "avg", "max")
+ for n in sorted(self.stats.items(), key=lambda v: v[1]["avg"], reverse=True):
+ s += "{:<30} {:>4} {:>6.2f} {:>6.2f}\n".format(
+ n[0], n[1]["count"], n[1]["avg"], n[1]["max"]
+ )
return s
def get_field_options(self, msg, fld_name):
# when there is an option, the msgdef has 3 elements.
# ['u32', 'ring_size', {'default': 1024}]
for _def in self.messages[msg].msgdef:
- if isinstance(_def, list) and \
- len(_def) == 3 and \
- _def[1] == fld_name:
+ if isinstance(_def, list) and len(_def) == 3 and _def[1] == fld_name:
return _def[2]
def _call_vpp(self, i, msgdef, service, **kwargs):
no response within the timeout window.
"""
ts = time.time()
- if 'context' not in kwargs:
+ if "context" not in kwargs:
context = self.get_context()
- kwargs['context'] = context
+ kwargs["context"] = context
else:
- context = kwargs['context']
- kwargs['_vl_msg_id'] = i
+ context = kwargs["context"]
+ kwargs["_vl_msg_id"] = i
- no_type_conversion = kwargs.pop('_no_type_conversion', False)
- timeout = kwargs.pop('_timeout', None)
+ no_type_conversion = kwargs.pop("_no_type_conversion", False)
+ timeout = kwargs.pop("_timeout", None)
try:
if self.transport.socket_index:
- kwargs['client_index'] = self.transport.socket_index
+ kwargs["client_index"] = self.transport.socket_index
except AttributeError:
pass
self.validate_args(msgdef, kwargs)
- s = 'Calling {}({})'.format(msgdef.name,
- ','.join(['{!r}:{!r}'.format(k, v) for k, v in kwargs.items()]))
+ s = "Calling {}({})".format(
+ msgdef.name, ",".join(["{!r}:{!r}".format(k, v) for k, v in kwargs.items()])
+ )
self.logger.debug(s)
b = msgdef.pack(kwargs)
self.transport.write(b)
- msgreply = service['reply']
- stream = True if 'stream' in service else False
+ msgreply = service["reply"]
+ stream = True if "stream" in service else False
if stream:
- if 'stream_msg' in service:
+ if "stream_msg" in service:
# New service['reply'] = _reply and service['stream_message'] = _details
- stream_message = service['stream_msg']
- modern =True
+ stream_message = service["stream_msg"]
+ modern = True
else:
# Old service['reply'] = _details
stream_message = msgreply
- msgreply = 'control_ping_reply'
+ msgreply = "control_ping_reply"
modern = False
# Send a ping after the request - we use its response
# to detect that we have seen all results.
# Block until we get a reply.
rl = []
- while (True):
+ while True:
r = self.read_blocking(no_type_conversion, timeout)
if r is None:
- raise VPPIOError(2, 'VPP API client: read failed')
+ raise VPPIOError(2, "VPP API client: read failed")
msgname = type(r).__name__
if context not in r or r.context == 0 or context != r.context:
# Message being queued
self.message_queue.put_nowait(r)
continue
if msgname != msgreply and (stream and (msgname != stream_message)):
- print('REPLY MISMATCH', msgreply, msgname, stream_message, stream)
+ print("REPLY MISMATCH", msgreply, msgname, stream_message, stream)
if not stream:
rl = r
break
if msgname == msgreply:
- if modern: # Return both reply and list
+ if modern: # Return both reply and list
rl = r, rl
break
self.transport.resume()
- s = 'Return value: {!r}'.format(r)
+ s = "Return value: {!r}".format(r)
if len(s) > 80:
s = s[:80] + "..."
self.logger.debug(s)
The returned context will help with assigning which call
the reply belongs to.
"""
- if 'context' not in kwargs:
+ if "context" not in kwargs:
context = self.get_context()
- kwargs['context'] = context
+ kwargs["context"] = context
else:
- context = kwargs['context']
+ context = kwargs["context"]
try:
if self.transport.socket_index:
- kwargs['client_index'] = self.transport.socket_index
+ kwargs["client_index"] = self.transport.socket_index
except AttributeError:
- kwargs['client_index'] = 0
- kwargs['_vl_msg_id'] = i
+ kwargs["client_index"] = 0
+ kwargs["_vl_msg_id"] = i
b = msg.pack(kwargs)
self.transport.write(b)
"""Return VPPs API message table as name_crc dictionary,
filtered by message name list."""
- replies = [self.services[n]['reply'] for n in msglist]
+ replies = [self.services[n]["reply"] for n in msglist]
message_table_filtered = {}
for name in msglist + replies:
- for k,v in self.transport.message_table.items():
+ for k, v in self.transport.message_table.items():
if k.startswith(name):
message_table_filtered[k] = v
break
return message_table_filtered
def __repr__(self):
- return "<VPPApiClient apifiles=%s, testmode=%s, async_thread=%s, " \
- "logger=%s, read_timeout=%s, " \
- "server_address='%s'>" % (
- self._apifiles, self.testmode, self.async_thread,
- self.logger, self.read_timeout, self.server_address)
+ return (
+ "<VPPApiClient apifiles=%s, testmode=%s, async_thread=%s, "
+ "logger=%s, read_timeout=%s, "
+ "server_address='%s'>"
+ % (
+ self._apifiles,
+ self.testmode,
+ self.async_thread,
+ self.logger,
+ self.read_timeout,
+ self.server_address,
+ )
+ )
def details_iter(self, f, **kwargs):
cursor = 0
while True:
- kwargs['cursor'] = cursor
+ kwargs["cursor"] = cursor
rv, details = f(**kwargs)
for d in details:
yield d
Code Review / vpp.git / blobdiff