--- /dev/null
+#!/usr/bin/env python2
+#
+# Copyright (c) 2018 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+import json
+import pprint
+from collections import OrderedDict
+
+BASE_PACKAGE = "io.fd.vpp.jvpp"
+
+
+class ParseException(Exception):
+ pass
+
+
+class Type(object):
+ def __init__(self, name, java_name, java_name_fqn, jni_signature, jni_type, jni_accessor,
+ host_to_net_function, net_to_host_function):
+ """
+ Initializes Type class.
+
+ :param name: name of type as defined in .api file, e.g. u8, u32[] or mac_entry
+ :param java_name: corresponding java name, e.g. byte, int[] or MacEntry
+ :param java_name_fqn: fully qualified java name, e.g. io.fd.vpp.jvpp.core.types.MacEntry
+ :param jni_signature: JNI Type signature, e.g. B, [I or Lio.fd.vpp.jvpp.core.types.MacEntry;
+ See https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/types.html#type_signatures
+ :param jni_type: JNI reference type, e.g. jbyte jintArray, jobject
+ See https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/types.html#reference_types
+ :param jni_accessor: Java type do by used in Get<type>Field, Set<type>Field and other functions.
+ See https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/functions.html#accessing_fields_of_objects
+ :param host_to_net_function: name of function host to net byte order swap function
+ :param net_to_host_function: name of function net to host byte order swap function
+ """
+ self.name = name
+ self.java_name = java_name
+
+ # Java generation specific properties, TODO(VPP-1186): move to Java specific subclass
+ self.java_name_fqn = java_name_fqn
+
+ # JNI generation specific properties, TODO(VPP-1186): move to JNI specific subclass
+ self.jni_signature = jni_signature
+
+ # Native type, see:
+ # https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/types.html#primitive_types
+ # and
+ # https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/types.html#reference_types
+ self.jni_type = jni_type
+
+ # Java type do by used in Get<type>Field, Set<type>Field and other functions, see:
+ # https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/functions.html#accessing_fields_of_objects
+ self.jni_accessor = jni_accessor
+
+ self.host_to_net_function = host_to_net_function
+ self.net_to_host_function = net_to_host_function
+ self.is_swap_needed = host_to_net_function and net_to_host_function
+
+
+class SimpleType(Type):
+ def __init__(self, name, java_name, jni_signature, jni_type, jni_accessor,
+ host_to_net_function=None, net_to_host_function=None):
+ super(SimpleType, self).__init__(
+ name=name,
+ java_name=java_name,
+ java_name_fqn=java_name,
+ jni_signature=jni_signature,
+ jni_type=jni_type,
+ jni_accessor=jni_accessor,
+ host_to_net_function=host_to_net_function,
+ net_to_host_function=net_to_host_function
+ )
+ self.vpp_name = name
+
+ def get_host_to_net_function(self, host_ref_name, net_ref_name):
+ return "%s = %s(%s)" % (net_ref_name, self.host_to_net_function, host_ref_name)
+
+ def __str__(self):
+ return "SimpleType{name:%s, java_name:%s}" % (self.name, self.java_name)
+
+
+# TODO(VPP-1187): add array host to net functions to reduce number of members and simplify JNI generation
+class Array(Type):
+ def __init__(self, base_type):
+ super(Array, self).__init__(
+ name=base_type.name + _ARRAY_SUFFIX,
+ java_name=base_type.java_name + _ARRAY_SUFFIX,
+ java_name_fqn=base_type.java_name_fqn + _ARRAY_SUFFIX,
+ jni_signature="[%s" % base_type.jni_signature,
+ jni_type="%sArray" % base_type.jni_type,
+ jni_accessor="Object",
+ host_to_net_function=base_type.host_to_net_function,
+ net_to_host_function=base_type.net_to_host_function
+ )
+ self.base_type = base_type
+
+ def get_host_to_net_function(self, host_ref_name, net_ref_name):
+ return self.base_type.get_host_to_net_function(host_ref_name, net_ref_name)
+
+ def __str__(self):
+ return "Array{name:%s, java_name:%s}" % (self.name, self.java_name)
+
+
+class Enum(Type):
+ def __init__(self, name, value, constants, definition, plugin_name):
+ _java_name = _underscore_to_camelcase_upper(name)
+
+ super(Enum, self).__init__(
+ name=name,
+ java_name=_java_name,
+ java_name_fqn="io.fd.vpp.jvpp.%s.types.%s" % (plugin_name, _java_name),
+ jni_signature="Lio/fd/vpp/jvpp/%s/types/%s;" % (plugin_name, _java_name),
+ jni_type="jobject",
+ jni_accessor="Object",
+ host_to_net_function="_host_to_net_%s" % name,
+ net_to_host_function="_net_to_host_%s" % name
+ )
+
+ self.value = value
+ self.constants = constants
+ self.doc = _message_to_javadoc(definition)
+ self.java_name_lower = _underscore_to_camelcase_lower(name)
+ self.vpp_name = "%s%s%s" % (_VPP_TYPE_PREFIX, name, _VPP_TYPE_SUFFIX)
+ # Fully qualified class name used by FindClass function, see:
+ # https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/functions.html#FindClass
+ self.jni_name = "io/fd/vpp/jvpp/%s/types/%s" % (plugin_name, _java_name)
+
+ def get_host_to_net_function(self, host_ref_name, net_ref_name):
+ return "_host_to_net_%s(env, %s, &(%s))" % (self.name, host_ref_name, net_ref_name)
+
+
+class Class(Type):
+ def __init__(self, name, crc, fields, definition, plugin_name):
+ _java_name = _underscore_to_camelcase_upper(name)
+
+ super(Class, self).__init__(
+ name=name,
+ java_name=_java_name,
+ java_name_fqn="io.fd.vpp.jvpp.%s.types.%s" % (plugin_name, _java_name),
+ jni_signature="Lio/fd/vpp/jvpp/%s/types/%s;" % (plugin_name, _java_name),
+ jni_type="jobject",
+ jni_accessor="Object",
+ host_to_net_function="_host_to_net_%s" % name,
+ net_to_host_function="_net_to_host_%s" % name
+ )
+
+ self.crc = crc
+ self.fields = fields
+ self.doc = _message_to_javadoc(definition)
+ self.java_name_lower = _underscore_to_camelcase_lower(name)
+ self.vpp_name = "%s%s%s" % (_VPP_TYPE_PREFIX, name, _VPP_TYPE_SUFFIX)
+ # Fully qualified class name used by FindClass function, see:
+ # https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/functions.html#FindClass
+ self.jni_name = "io/fd/vpp/jvpp/%s/types/%s" % (plugin_name, _java_name)
+
+ def get_host_to_net_function(self, host_ref_name, net_ref_name):
+ return "_host_to_net_%s(env, %s, &(%s))" % (self.name, host_ref_name, net_ref_name)
+
+
+class Union(Type):
+ def __init__(self, name, crc, fields, definition, plugin_name):
+ _java_name = _underscore_to_camelcase_upper(name)
+
+ super(Union, self).__init__(
+ name=name,
+ java_name=_java_name,
+ java_name_fqn="io.fd.vpp.jvpp.%s.types.%s" % (plugin_name, _java_name),
+ jni_signature="Lio/fd/vpp/jvpp/%s/types/%s;" % (plugin_name, _java_name),
+ jni_type="jobject",
+ jni_accessor="Object",
+ host_to_net_function="_host_to_net_%s" % name,
+ net_to_host_function="_net_to_host_%s" % name
+ )
+
+ self.crc = crc
+ self.fields = fields
+ self.doc = _message_to_javadoc(definition)
+ self.java_name_lower = _underscore_to_camelcase_lower(name)
+ self.vpp_name = "%s%s%s" % (_VPP_TYPE_PREFIX, name, _VPP_TYPE_SUFFIX)
+ # Fully qualified class name used by FindClass function, see:
+ # https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/functions.html#FindClass
+ self.jni_name = "io/fd/vpp/jvpp/%s/types/%s" % (plugin_name, _java_name)
+
+ def get_host_to_net_function(self, host_ref_name, net_ref_name):
+ return "_host_to_net_%s(env, %s, &(%s))" % (self.name, host_ref_name, net_ref_name)
+
+
+class Field(object):
+ def __init__(self, name, field_type, array_len=None, array_len_field=None):
+ self.name = name
+ self.java_name = _underscore_to_camelcase_lower(name)
+ self.java_name_upper = _underscore_to_camelcase_upper(name)
+ self.type = field_type
+ self.array_len = array_len
+ self.array_len_field = array_len_field
+
+ def __str__(self):
+ return "Field{name:%s, java_name:%s, type:%s}" % (self.name, self.java_name, self.type)
+
+
+class Message(object):
+ def __init__(self, name, crc, fields, definition):
+ self.name = name
+ self.java_name_upper = _underscore_to_camelcase_upper(name)
+ self.java_name_lower = _underscore_to_camelcase_lower(name)
+ self.crc = crc[2:]
+ self.fields = fields
+ self.has_fields = fields != []
+ self.doc = _message_to_javadoc(definition)
+
+ def __str__(self):
+ return "Message{name:%s, java_name:%s, crc:%s, fields:%s}" % (
+ self.name, self.java_name_upper, self.crc, self.fields)
+
+
+class Event(Message):
+ def __init__(self, name, crc, fields, definition):
+ super(Event, self).__init__(name, crc, fields, definition)
+
+
+class Request(Message):
+ def __init__(self, name, reply, crc, fields, definition):
+ super(Request, self).__init__(name, crc, fields, definition)
+ self.reply = reply
+ self.reply_java = _underscore_to_camelcase_upper(reply)
+
+ def __str__(self):
+ return "Request{name:%s, reply:%s, crc:%s, fields:%s}" % (self.name, self.reply, self.crc, self.fields)
+
+
+class Reply(Message):
+ def __init__(self, name, request, crc, fields, definition):
+ super(Reply, self).__init__(name, crc, fields, definition)
+ self.request = request
+ self.request_java = _underscore_to_camelcase_upper(request)
+
+ def __str__(self):
+ return "Reply{name:%s, request:%s, crc:%s, fields:%s}" % (self.name, self.request, self.crc, self.fields)
+
+
+class Dump(Message):
+ def __init__(self, name, details, crc, fields, definition):
+ super(Dump, self).__init__(name, crc, fields, definition)
+ self.details = details
+ self.reply_java = _underscore_to_camelcase_upper(details)
+
+ def __str__(self):
+ return "Dump{name:%s, details:%s, crc:%s, fields:%s}" % (self.name, self.details, self.crc, self.fields)
+
+
+class Details(Message):
+ def __init__(self, name, dump, crc, fields, definition):
+ super(Details, self).__init__(name, crc, fields, definition)
+ self.dump = dump
+ self.request_java = _underscore_to_camelcase_upper(dump)
+
+ def __str__(self):
+ return "Details{name:%s, dump:%s, crc:%s, fields:%s}" % (self.name, self.dump, self.crc, self.fields)
+
+
+def is_retval(field):
+ return field.name == u'retval'
+
+
+def is_array(field):
+ return field.array_len is not None
+
+
+def is_request(msg):
+ return hasattr(msg, 'reply')
+
+
+def is_reply(msg):
+ return hasattr(msg, 'request')
+
+
+def is_dump(msg):
+ return hasattr(msg, 'details')
+
+
+def is_details(msg):
+ return hasattr(msg, 'dump')
+
+
+def is_event(msg):
+ return isinstance(msg, Event)
+
+
+def is_control_ping(msg):
+ return msg.name == u'control_ping'
+
+
+def is_control_ping_reply(msg):
+ return msg.name == u'control_ping_reply'
+
+
+class JVppModel(object):
+ def __init__(self, logger, json_api_files, plugin_name):
+ self.logger = logger
+ # TODO(VPP-1188): provide json_file_by_definition map to improve javadoc
+ self.json_api_files = json_api_files
+ self.plugin_package = BASE_PACKAGE + "." + plugin_name
+ self.plugin_name = plugin_name
+ self.plugin_java_name = _underscore_to_camelcase_upper(plugin_name)
+ self._load_json_files(json_api_files)
+ self._parse_services()
+ self._parse_messages()
+ self._validate_messages()
+
+ def _load_json_files(self, json_api_files):
+ types = {}
+ self._messages = []
+ self._services = {}
+ for file_name in json_api_files:
+ with open(file_name) as f:
+ j = json.load(f)
+ types.update({d[0]: {'type': 'enum', 'data': d} for d in j['enums']})
+ types.update({d[0]: {'type': 'type', 'data': d} for d in j['types']})
+ types.update({d[0]: {'type': 'union', 'data': d} for d in j['unions']})
+ self._messages.extend(j['messages'])
+ self._services.update(j['services'])
+ self._parse_types(types)
+
+ def _parse_types(self, types):
+ self._parse_simple_types()
+ i = 0
+ while True:
+ unresolved = {}
+ for name, value in types.items():
+ if name in self._types_by_name:
+ continue
+
+ type = value['type']
+ data = value['data'][1:]
+ try:
+ if type == 'enum':
+ type = self._parse_enum(name, data)
+ elif type == 'union':
+ type = self._parse_union(name, data)
+ elif type == 'type':
+ type = self._parse_type(name, data)
+ else:
+ self.logger.warning("Unsupported type %s. Ignoring...", type)
+ continue
+
+ self._types_by_name[name] = type
+ self._types_by_name[name + _ARRAY_SUFFIX] = Array(type)
+ except ParseException as e:
+ self.logger.debug("Failed to parse %s type in iteration %s: %s.", name, i, e)
+ unresolved[name] = value
+ if len(unresolved) == 0:
+ break
+ if i > 3:
+ raise ParseException('Unresolved type definitions {}'
+ .format(unresolved))
+ types = unresolved
+ i += 1
+
+ self.types = self._types_by_name.values()
+
+ def _parse_simple_types(self):
+ # Mapping according to:
+ # http://docs.oracle.com/javase/7/do+'[]'cs/technotes/guides/jni/spec/types.html
+ # and
+ # https://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/functions.html#Get_type_Field_routines
+ #
+ # Unsigned types are converted to signed java types that have the same size.
+ # It is the API user responsibility to interpret them correctly.
+
+ self._types_by_name = OrderedDict({
+ 'u8': SimpleType('u8', 'byte', 'B', 'jbyte', 'Byte'),
+ 'i8': SimpleType('i8', 'byte', 'B', 'jbyte', 'Byte'),
+ 'u16': SimpleType('u16', 'short', 'S', 'jshort', 'Short',
+ host_to_net_function='clib_host_to_net_u16',
+ net_to_host_function='clib_net_to_host_u16'),
+ 'i16': SimpleType('i16', 'short', 'S', 'jshort', 'Short',
+ host_to_net_function='clib_host_to_net_i16',
+ net_to_host_function='clib_net_to_host_i16'),
+ 'u32': SimpleType('u32', 'int', 'I', 'jint', 'Int',
+ host_to_net_function='clib_host_to_net_u32',
+ net_to_host_function='clib_net_to_host_u32'),
+ 'i32': SimpleType('i32', 'int', 'I', 'jint', 'Int',
+ host_to_net_function='clib_host_to_net_i32',
+ net_to_host_function='clib_net_to_host_i32'),
+ 'u64': SimpleType('u64', 'long', 'J', 'jlong', 'Long',
+ host_to_net_function='clib_host_to_net_u64',
+ net_to_host_function='clib_net_to_host_u64'),
+ 'i64': SimpleType('i64', 'long', 'J', 'jlong', 'Long',
+ host_to_net_function='clib_host_to_net_i64',
+ net_to_host_function='clib_net_to_host_i64'),
+ 'f64': SimpleType('f64', 'double', 'D', 'jdouble', 'Double')
+ })
+
+ for n, t in self._types_by_name.items():
+ self._types_by_name[n + _ARRAY_SUFFIX] = Array(t)
+
+ def _parse_enum(self, name, definition):
+ self.logger.debug("Parsing enum %s: %s", name, definition)
+ constants = []
+ type_name = None
+ for item in definition:
+ if type(item) is dict and 'enumtype' in item:
+ type_name = item['enumtype']
+ continue
+ constants.append({'name': item[0], 'value': item[1]})
+ if not type_name:
+ raise ParseException("'enumtype' was not defined for %s" % definition)
+ return Enum(name, Field('value', self._types_by_name[type_name]), constants, definition, self.plugin_name)
+
+ def _parse_union(self, name, definition):
+ self.logger.debug("Parsing union %s: %s", name, definition)
+ crc, fields = self._parse_fields(definition)
+ return Union(name, crc, fields, definition, self.plugin_name)
+
+ def _parse_type(self, name, definition):
+ self.logger.debug("Parsing type %s: %s", name, definition)
+ crc, fields = self._parse_fields(definition)
+ return Class(name, crc, fields, definition, self.plugin_name)
+
+ def _parse_services(self):
+ self._dumps_by_details = {}
+ self._requests_by_reply = {}
+ for name, service in self._services.iteritems():
+ if _is_stream(service):
+ self._dumps_by_details[service['reply']] = name
+ else:
+ self._requests_by_reply[service['reply']] = name
+
+ def _parse_messages(self):
+ # Preserve ordering from JSON file to make debugging easier.
+ self._messages_by_name = OrderedDict()
+ for msg in self._messages:
+ try:
+ name = msg[0]
+ definition = msg[1:]
+ self._messages_by_name[name] = self._parse_message(name, definition)
+ except ParseException as e:
+ self.logger.warning("Failed to parse message %s: %s. Skipping message.", name, e)
+
+ def _parse_message(self, name, definition):
+ self.logger.debug("Parsing message %s: %s", name, definition)
+ crc, fields = self._parse_fields(definition)
+ if name in self._services:
+ service = self._services[name]
+ reply = service['reply']
+ if _is_stream(service):
+ return Dump(name, reply, crc, filter(_is_request_field, fields), definition)
+ if reply:
+ return Request(name, reply, crc, filter(_is_request_field, fields), definition)
+ else:
+ return Event(name, crc, filter(_is_request_field, fields), definition)
+ elif name in self._requests_by_reply:
+ return Reply(name, self._requests_by_reply[name], crc, filter(_is_reply_field, fields), definition)
+ elif name in self._dumps_by_details:
+ return Details(name, self._dumps_by_details[name], crc, filter(_is_reply_field, fields), definition)
+ else:
+ # TODO: some messages like combined_counters are not visible in the services.
+ # Throw exception instead (requires fixing vppagigen).
+ return Event(name, crc, filter(_is_request_field, fields), definition)
+
+ def _parse_fields(self, definition):
+ crc = None
+ fields = []
+ for item in definition:
+ if type(item) == dict and 'crc' in item:
+ crc = item['crc']
+ else:
+ fields.append(self._parse_field(item, fields))
+ if not crc:
+ raise ParseException("CRC was not defined for %s" % definition)
+ return crc, fields
+
+ def _parse_field(self, field, fields):
+ type_name = _extract_type_name(field[0])
+ if type_name in self._types_by_name:
+ if len(field) > 2:
+ # Array field
+ array_len_field = None
+ if len(field) == 4:
+ for f in fields:
+ if f.name == field[3]:
+ array_len_field = f
+ if not array_len_field:
+ raise ParseException("Could not find field %s declared as length of array %s",
+ field[3], field[1])
+ return Field(field[1], self._types_by_name[type_name + _ARRAY_SUFFIX], field[2], array_len_field)
+ else:
+ return Field(field[1], self._types_by_name[type_name])
+ else:
+ raise ParseException("Unknown field type %s" % field)
+
+ def _validate_messages(self):
+ """
+ In case if message A is known to be reply for message B, and message B was not correctly parsed,
+ remove message A from the set of all messages.
+ """
+ to_be_removed = []
+ messages = self._messages_by_name
+ for name, msg in messages.iteritems():
+ if (is_request(msg) and msg.reply not in messages) \
+ or (is_reply(msg) and msg.request not in messages) \
+ or (is_dump(msg) and msg.details not in messages) \
+ or (is_details(msg) and msg.dump not in messages):
+ to_be_removed.append(name)
+
+ for name in to_be_removed:
+ del messages[name]
+
+ self.messages = self._messages_by_name.values()
+
+_ARRAY_SUFFIX = '[]'
+
+
+def _underscore_to_camelcase_upper(name):
+ return name.title().replace("_", "")
+
+
+def _underscore_to_camelcase_lower(name):
+ name = name.title().replace("_", "")
+ return name[0].lower() + name[1:]
+
+
+def _message_to_javadoc(message_definition):
+ """ Converts JSON message definition to javadoc """
+ formatted_message = pprint.pformat(message_definition, indent=4, width=120, depth=None)
+ return " * " + formatted_message.replace("\n", "\n * ")
+
+
+def _is_stream(service):
+ """
+ Checks if service represents stream, e.g.:
+ "ip_address_dump": {
+ "reply": "ip_address_details",
+ "stream": true
+ }
+ :param service: JSON definition of service
+ :return: value assigned to "stream" or None
+ """
+ return "stream" in service
+
+
+def _extract_type_name(name):
+ if name.startswith(_VPP_TYPE_PREFIX) and name.endswith(_VPP_TYPE_SUFFIX):
+ return name[len(_VPP_TYPE_PREFIX): - len(_VPP_TYPE_SUFFIX)]
+ return name
+
+_VPP_TYPE_PREFIX = "vl_api_"
+
+_VPP_TYPE_SUFFIX = "_t"
+
+
+def _is_request_field(field):
+ # Skip fields that are hidden to the jvpp user (handled by JNI layer)
+ return field.name not in {'_vl_msg_id', 'client_index', 'context'}
+
+
+def _is_reply_field(field):
+ # Skip fields that are hidden to the jvpp user:
+ # _vl_msg_id is handled at JNI layer,
+ # Unlike in the request case, context is visible to allow matching replies with requests at Java layer.
+ return field.name not in {'_vl_msg_id'}
Code Review / vpp.git / blobdiff