#!/usr/bin/env python # # Copyright (c) 2016 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 os from string import Template import util dto_template = Template(""" package $plugin_package.$dto_package; /** *

This class represents $description. *
It was generated by dto_gen.py based on $inputfile preparsed data: *

$docs
 * 
*/ public final class $cls_name implements $base_package.$dto_package.$base_type { $fields $methods } """) field_template = Template(""" public $type $name;\n""") send_template = Template(""" @Override public int send(final $base_package.JVpp jvpp) throws io.fd.vpp.jvpp.VppInvocationException { return (($plugin_package.JVpp${plugin_name})jvpp).$method_name($args); }""") def generate_dtos(func_list, base_package, plugin_package, plugin_name, dto_package, inputfile): """ Generates dto objects in a dedicated package """ print "Generating DTOs" if not os.path.exists(dto_package): raise Exception("%s folder is missing" % dto_package) for func in func_list: camel_case_dto_name = util.underscore_to_camelcase_upper(func['name']) camel_case_method_name = util.underscore_to_camelcase(func['name']) dto_path = os.path.join(dto_package, camel_case_dto_name + ".java") if util.is_ignored(func['name']) or util.is_control_ping(camel_case_dto_name): continue fields = generate_dto_fields(camel_case_dto_name, func) methods = generate_dto_base_methods(camel_case_dto_name, func) base_type = "" # Generate request/reply or dump/dumpReply even if structure can be used as notification if not util.is_just_notification(func["name"]): if util.is_reply(camel_case_dto_name): description = "reply DTO" request_dto_name = get_request_name(camel_case_dto_name, func['name']) if util.is_details(camel_case_dto_name): # FIXME assumption that dump calls end with "Dump" suffix. Not enforced in vpe.api base_type += "JVppReply<%s.%s.%s>" % (plugin_package, dto_package, request_dto_name + "Dump") generate_dump_reply_dto(request_dto_name, base_package, plugin_package, dto_package, camel_case_dto_name, camel_case_method_name, func) else: base_type += "JVppReply<%s.%s.%s>" % (plugin_package, dto_package, request_dto_name) else: args = "" if fields is "" else "this" methods += send_template.substitute(method_name=camel_case_method_name, base_package=base_package, plugin_package=plugin_package, plugin_name=plugin_name, args=args) if util.is_dump(camel_case_dto_name): base_type += "JVppDump" description = "dump request DTO" else: base_type += "JVppRequest" description = "request DTO" write_dto_file(base_package, plugin_package, base_type, camel_case_dto_name, description, dto_package, dto_path, fields, func, inputfile, methods) # for structures that are also used as notifications, generate dedicated notification DTO if util.is_notification(func["name"]): base_type = "JVppNotification" description = "notification DTO" camel_case_dto_name = util.add_notification_suffix(camel_case_dto_name) dto_path = os.path.join(dto_package, camel_case_dto_name + ".java") methods = generate_dto_base_methods(camel_case_dto_name, func) write_dto_file(base_package, plugin_package, base_type, camel_case_dto_name, description, dto_package, dto_path, fields, func, inputfile, methods) flush_dump_reply_dtos(inputfile) def generate_dto_base_methods(camel_case_dto_name, func): methods = generate_dto_hash(func) methods += generate_dto_equals(camel_case_dto_name, func) methods += generate_dto_tostring(camel_case_dto_name, func) return methods def generate_dto_fields(camel_case_dto_name, func): fields = "" for t in zip(func['types'], func['args']): # for retval don't generate dto field in Reply field_name = util.underscore_to_camelcase(t[1]) if util.is_reply(camel_case_dto_name) and util.is_retval_field(field_name): continue fields += field_template.substitute(type=util.jni_2_java_type_mapping[t[0]], name=field_name) return fields tostring_field_template = Template(""" \"$field_name=\" + $field_name + ", " +\n""") tostring_array_field_template = Template(""" \"$field_name=\" + java.util.Arrays.toString($field_name) + ", " +\n""") tostring_template = Template(""" @Override public String toString() { return "$cls_name{" + $fields_tostring "}"; }\n\n""") def generate_dto_tostring(camel_case_dto_name, func): tostring_fields = "" for t in zip(func['types'], func['args']): field_name = util.underscore_to_camelcase(t[1]) # for retval don't generate dto field in Reply if util.is_retval_field(field_name): continue # handle array types if util.is_array(util.jni_2_java_type_mapping[t[0]]): tostring_fields += tostring_array_field_template.substitute(field_name=field_name) else: tostring_fields += tostring_field_template.substitute(field_name=field_name) return tostring_template.substitute(cls_name=camel_case_dto_name, fields_tostring=tostring_fields[:-8]) equals_field_template = Template(""" if (!java.util.Objects.equals(this.$field_name, other.$field_name)) { return false; }\n""") equals_array_field_template = Template(""" if (!java.util.Arrays.equals(this.$field_name, other.$field_name)) { return false; }\n""") equals_template = Template(""" @Override public boolean equals(final Object o) { if (this == o) { return true; } if (o == null || getClass() != o.getClass()) { return false; } final $cls_name other = ($cls_name) o; $comparisons return true; }\n\n""") def generate_dto_equals(camel_case_dto_name, func): equals_fields = "" for t in zip(func['types'], func['args']): field_name = util.underscore_to_camelcase(t[1]) # for retval don't generate dto field in Reply if util.is_retval_field(field_name): continue # handle array types if util.is_array(util.jni_2_java_type_mapping[t[0]]): equals_fields += equals_array_field_template.substitute(field_name=field_name) else: equals_fields += equals_field_template.substitute(field_name=field_name) return equals_template.substitute(cls_name=camel_case_dto_name, comparisons=equals_fields) hash_template = Template(""" @Override public int hashCode() { return java.util.Objects.hash($fields); }\n\n""") hash_single_array_type_template = Template(""" @Override public int hashCode() { return java.util.Arrays.hashCode($fields); }\n\n""") def generate_dto_hash(func): hash_fields = "" # Special handling for hashCode in case just a single array field is present. Cannot use Objects.equals since the # array is mistaken for a varargs parameter. Instead use Arrays.hashCode in such case. if len(func['args']) == 1: single_type = func['types'][0] single_type_name = func['args'][0] if util.is_array(util.jni_2_java_type_mapping[single_type]): return hash_single_array_type_template.substitute(fields=util.underscore_to_camelcase(single_type_name)) for t in zip(func['types'], func['args']): field_name = util.underscore_to_camelcase(t[1]) # for retval don't generate dto field in Reply if util.is_retval_field(field_name): continue hash_fields += field_name + ", " return hash_template.substitute(fields=hash_fields[:-2]) def write_dto_file(base_package, plugin_package, base_type, camel_case_dto_name, description, dto_package, dto_path, fields, func, inputfile, methods): dto_file = open(dto_path, 'w') dto_file.write(dto_template.substitute(inputfile=inputfile, description=description, docs=util.api_message_to_javadoc(func), cls_name=camel_case_dto_name, fields=fields, methods=methods, base_package=base_package, plugin_package=plugin_package, base_type=base_type, dto_package=dto_package)) dto_file.flush() dto_file.close() dump_dto_suffix = "ReplyDump" dump_reply_artificial_dtos = {} # Returns request name or special one from unconventional_naming_rep_req map def get_request_name(camel_case_dto_name, func_name): return util.underscore_to_camelcase_upper( util.unconventional_naming_rep_req[func_name]) if func_name in util.unconventional_naming_rep_req \ else util.remove_reply_suffix(camel_case_dto_name) def flush_dump_reply_dtos(inputfile): for dump_reply_artificial_dto in dump_reply_artificial_dtos.values(): dto_path = os.path.join(dump_reply_artificial_dto['dto_package'], dump_reply_artificial_dto['cls_name'] + ".java") dto_file = open(dto_path, 'w') dto_file.write(dto_template.substitute(inputfile=inputfile, description="dump reply wrapper", docs=dump_reply_artificial_dto['docs'], cls_name=dump_reply_artificial_dto['cls_name'], fields=dump_reply_artificial_dto['fields'], methods=dump_reply_artificial_dto['methods'], plugin_package=dump_reply_artificial_dto['plugin_package'], base_package=dump_reply_artificial_dto['base_package'], base_type=dump_reply_artificial_dto['base_type'], dto_package=dump_reply_artificial_dto['dto_package'])) dto_file.flush() dto_file.close() def generate_dump_reply_dto(request_dto_name, base_package, plugin_package, dto_package, camel_case_dto_name, camel_case_method_name, func): base_type = "JVppReplyDump<%s.%s.%s, %s.%s.%s>" % ( plugin_package, dto_package, util.remove_reply_suffix(camel_case_dto_name) + "Dump", plugin_package, dto_package, camel_case_dto_name) fields = " public java.util.List<%s> %s = new java.util.ArrayList<>();" % (camel_case_dto_name, camel_case_method_name) cls_name = camel_case_dto_name + dump_dto_suffix # using artificial type for fields, just to bypass the is_array check in base methods generators # the type is not really used artificial_type = 'jstring' # In case of already existing artificial reply dump DTO, just update it # Used for sub-dump dtos if request_dto_name in dump_reply_artificial_dtos.keys(): dump_reply_artificial_dtos[request_dto_name]['fields'] += '\n' + fields dump_reply_artificial_dtos[request_dto_name]['field_names'].append(func['name']) dump_reply_artificial_dtos[request_dto_name]['field_types'].append(artificial_type) methods = '\n' + generate_dto_base_methods(dump_reply_artificial_dtos[request_dto_name]['cls_name'], {'args': dump_reply_artificial_dtos[request_dto_name]['field_names'], 'types': dump_reply_artificial_dtos[request_dto_name]['field_types']}) dump_reply_artificial_dtos[request_dto_name]['methods'] = methods else: methods = '\n' + generate_dto_base_methods(cls_name, {'args': [func['name']], 'types': [artificial_type]}) dump_reply_artificial_dtos[request_dto_name] = ({'docs': util.api_message_to_javadoc(func), 'cls_name': cls_name, 'fields': fields, 'field_names': [func['name']], 'field_types': [artificial_type], # strip too many newlines at the end of base method block 'methods': methods, 'plugin_package': plugin_package, 'base_package': base_package, 'base_type': base_type, 'dto_package': dto_package})