diff options
Diffstat (limited to 'vpp-api/java/jvpp/gen/jvppgen/jvpp_c_gen.py')
| -rw-r--r-- | vpp-api/java/jvpp/gen/jvppgen/jvpp_c_gen.py | 525 |
1 files changed, 525 insertions, 0 deletions
diff --git a/vpp-api/java/jvpp/gen/jvppgen/jvpp_c_gen.py b/vpp-api/java/jvpp/gen/jvppgen/jvpp_c_gen.py new file mode 100644 index 00000000000..1796ac1719b --- /dev/null +++ b/vpp-api/java/jvpp/gen/jvppgen/jvpp_c_gen.py @@ -0,0 +1,525 @@ +#!/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 +# l +# 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, util +from string import Template + +def is_manually_generated(f_name): + return f_name in {'control_ping_reply'} + + +class_reference_template = Template("""jclass ${ref_name}Class; +""") + +find_class_invocation_template = Template(""" + ${ref_name}Class = (jclass)(*env)->NewGlobalRef(env, (*env)->FindClass(env, "org/openvpp/jvpp/dto/${class_name}")); + if ((*env)->ExceptionCheck(env)) { + (*env)->ExceptionDescribe(env); + return JNI_ERR; + }""") + +find_class_template = Template(""" + ${ref_name}Class = (jclass)(*env)->NewGlobalRef(env, (*env)->FindClass(env, "${class_name}")); + if ((*env)->ExceptionCheck(env)) { + (*env)->ExceptionDescribe(env); + return JNI_ERR; + }""") + +class_cache_template = Template(""" +$class_references +static int cache_class_references(JNIEnv* env) { + $find_class_invocations + return 0; +}""") + +def generate_class_cache(func_list): + class_references = [] + find_class_invocations = [] + for f in func_list: + c_name = f['name'] + class_name = util.underscore_to_camelcase_upper(c_name) + ref_name = util.underscore_to_camelcase(c_name) + + if util.is_ignored(c_name): + continue + + if util.is_reply(class_name): + class_references.append(class_reference_template.substitute( + ref_name=ref_name)) + find_class_invocations.append(find_class_invocation_template.substitute( + ref_name=ref_name, + class_name=class_name)) + elif util.is_notification(c_name): + class_references.append(class_reference_template.substitute( + ref_name=util.add_notification_suffix(ref_name))) + find_class_invocations.append(find_class_invocation_template.substitute( + ref_name=util.add_notification_suffix(ref_name), + class_name=util.add_notification_suffix(class_name))) + + # add exception class to class cache + ref_name = 'callbackException' + class_name = 'org/openvpp/jvpp/VppCallbackException' + class_references.append(class_reference_template.substitute( + ref_name=ref_name)) + find_class_invocations.append(find_class_template.substitute( + ref_name=ref_name, + class_name=class_name)) + return class_cache_template.substitute( + class_references="".join(class_references), find_class_invocations="".join(find_class_invocations)) + + +# TODO: cache method and field identifiers to achieve better performance +# https://jira.fd.io/browse/HONEYCOMB-42 +request_class_template = Template(""" + jclass requestClass = (*env)->FindClass(env, "org/openvpp/jvpp/dto/${java_name_upper}");""") + +request_field_identifier_template = Template(""" + jfieldID ${java_name}FieldId = (*env)->GetFieldID(env, requestClass, "${java_name}", "${jni_signature}"); + ${jni_type} ${java_name} = (*env)->Get${jni_getter}(env, request, ${java_name}FieldId); + """) + +u8_struct_setter_template = Template(""" + mp->${c_name} = ${java_name};""") + +u16_struct_setter_template = Template(""" + mp->${c_name} = clib_host_to_net_u16(${java_name});""") + +u32_struct_setter_template = Template(""" + mp->${c_name} = clib_host_to_net_u32(${java_name});""") + +i32_struct_setter_template = Template(""" + mp->${c_name} = clib_host_to_net_i32(${java_name});!""") + +u64_struct_setter_template = Template(""" + mp->${c_name} = clib_host_to_net_u64(${java_name});""") + +u8_array_struct_setter_template = Template(""" + if (${java_name}) { + jsize cnt = (*env)->GetArrayLength (env, ${java_name}); + size_t max_size = ${field_length}; + if (max_size != 0 && cnt > max_size) cnt = max_size; + (*env)->GetByteArrayRegion(env, ${java_name}, 0, cnt, (jbyte *)mp->${c_name}); + } +""") + +u16_array_struct_setter_template = Template(""" + jshort * ${java_name}ArrayElements = (*env)->GetShortArrayElements(env, ${java_name}, NULL); + if (${java_name}) { + size_t _i; + jsize cnt = (*env)->GetArrayLength (env, ${java_name}); + size_t max_size = ${field_length}; + if (max_size != 0 && cnt > max_size) cnt = max_size; + for (_i = 0; _i < cnt; _i++) { + mp->${c_name}[_i] = clib_host_to_net_u16(${java_name}ArrayElements[_i]); + } + } + (*env)->ReleaseShortArrayElements (env, ${java_name}, ${java_name}ArrayElements, 0); + """) + +u32_array_struct_setter_template = Template(""" + jint * ${java_name}ArrayElements = (*env)->GetIntArrayElements(env, ${java_name}, NULL); + if (${java_name}) { + size_t _i; + jsize cnt = (*env)->GetArrayLength (env, ${java_name}); + size_t max_size = ${field_length}; + if (max_size != 0 && cnt > max_size) cnt = max_size; + for (_i = 0; _i < cnt; _i++) { + mp->${c_name}[_i] = clib_host_to_net_u32(${java_name}ArrayElements[_i]); + } + } + (*env)->ReleaseIntArrayElements (env, ${java_name}, ${java_name}ArrayElements, 0); + """) + +u64_array_struct_setter_template = Template(""" + jlong * ${java_name}ArrayElements = (*env)->GetLongArrayElements(env, ${java_name}, NULL); + if (${java_name}) { + size_t _i; + jsize cnt = (*env)->GetArrayLength (env, ${java_name}); + size_t max_size = ${field_length}; + if (max_size != 0 && cnt > max_size) cnt = max_size; + for (_i = 0; _i < cnt; _i++) { + mp->${c_name}[_i] = clib_host_to_net_u64(${java_name}ArrayElements[_i]); + } + } + (*env)->ReleaseLongArrayElements (env, ${java_name}, ${java_name}ArrayElements, 0); + """) + +vl_api_ip4_fib_counter_t_array_struct_setter_template = Template(""" + // vl_api_ip4_fib_counter_t_array_field_setter_template FIXME""") + +vl_api_ip6_fib_counter_t_array_struct_setter_template = Template(""" + // vl_api_ip6_fib_counter_t_array_field_setter_template FIXME""") + +struct_setter_templates = {'u8': u8_struct_setter_template, + 'u16': u16_struct_setter_template, + 'u32': u32_struct_setter_template, + 'i32': u32_struct_setter_template, + 'u64': u64_struct_setter_template, + 'u8[]': u8_array_struct_setter_template, + 'u16[]': u16_array_struct_setter_template, + 'u32[]': u32_array_struct_setter_template, + 'u64[]': u64_array_struct_setter_template, + 'vl_api_ip4_fib_counter_t[]': vl_api_ip4_fib_counter_t_array_struct_setter_template, + 'vl_api_ip6_fib_counter_t[]': vl_api_ip6_fib_counter_t_array_struct_setter_template + } + +jni_impl_template = Template(""" +/** + * JNI binding for sending ${c_name} vpe.api message. + * Generated based on $inputfile preparsed data: +$api_data + */ +JNIEXPORT jint JNICALL Java_org_openvpp_jvpp_JVppImpl_${java_name}0 +(JNIEnv * env, jclass clazz$args) { + vppjni_main_t *jm = &vppjni_main; + vl_api_${c_name}_t * mp; + u32 my_context_id; + int rv; + rv = vppjni_sanity_check (jm); + if (rv) return rv; + my_context_id = vppjni_get_context_id (jm); + $request_class + $field_identifiers + M(${c_name_uppercase}, ${c_name}); + mp->context = clib_host_to_net_u32 (my_context_id); + $struct_setters + S; + if ((*env)->ExceptionCheck(env)) { + return JNI_ERR; + } + return my_context_id; +}""") + +def generate_jni_impl(func_list, inputfile): + jni_impl = [] + for f in func_list: + f_name = f['name'] + camel_case_function_name = util.underscore_to_camelcase(f_name) + if is_manually_generated(f_name) or util.is_reply(camel_case_function_name) \ + or util.is_ignored(f_name) or util.is_just_notification(f_name): + continue + + arguments = '' + request_class = '' + field_identifiers = '' + struct_setters = '' + f_name_uppercase = f_name.upper() + + if f['args']: + arguments = ', jobject request' + camel_case_function_name_upper = util.underscore_to_camelcase_upper(f_name) + + request_class = request_class_template.substitute(java_name_upper=camel_case_function_name_upper) + + # field identifiers + for t in zip(f['types'], f['args']): + jni_type = t[0] + java_field_name = util.underscore_to_camelcase(t[1]) + jni_signature = util.jni_2_signature_mapping[jni_type] + jni_getter = util.jni_field_accessors[jni_type] + field_identifiers += request_field_identifier_template.substitute( + jni_type=jni_type, + java_name=java_field_name, + jni_signature=jni_signature, + jni_getter=jni_getter) + + # field setters + for t in zip(f['c_types'], f['args'], f['lengths']): + c_type = t[0] + c_name = t[1] + field_length = t[2][0] + + # check if we are processing variable length array: + if t[2][1]: + field_length = util.underscore_to_camelcase(t[2][0]) + + java_field_name = util.underscore_to_camelcase(c_name) + + struct_setter_template = struct_setter_templates[c_type] + + struct_setters += struct_setter_template.substitute( + c_name=c_name, + java_name=java_field_name, + field_length=field_length) + + jni_impl.append(jni_impl_template.substitute( + inputfile=inputfile, + api_data=util.api_message_to_javadoc(f), + java_name=camel_case_function_name, + c_name_uppercase=f_name_uppercase, + c_name=f_name, + request_class=request_class, + field_identifiers=field_identifiers, + struct_setters=struct_setters, + args=arguments)) + + return "\n".join(jni_impl) + + +dto_field_id_template = Template(""" + jfieldID ${java_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${java_name}", "${jni_signature}");""") + +default_dto_field_setter_template = Template(""" + (*env)->Set${jni_setter}(env, dto, ${java_name}FieldId, mp->${c_name}); +""") + +variable_length_array_value_template = Template("""mp->${length_var_name}""") +variable_length_array_template = Template("""clib_net_to_host_${length_field_type}(${value})""") + +u16_dto_field_setter_template = Template(""" + (*env)->Set${jni_setter}(env, dto, ${java_name}FieldId, clib_net_to_host_u16(mp->${c_name})); +""") + +u32_dto_field_setter_template = Template(""" + (*env)->Set${jni_setter}(env, dto, ${java_name}FieldId, clib_net_to_host_u32(mp->${c_name})); +""") + +u64_dto_field_setter_template = Template(""" + (*env)->Set${jni_setter}(env, dto, ${java_name}FieldId, clib_net_to_host_u64(mp->${c_name})); +""") + +u8_array_dto_field_setter_template = Template(""" + jbyteArray ${java_name} = (*env)->NewByteArray(env, ${field_length}); + (*env)->SetByteArrayRegion(env, ${java_name}, 0, ${field_length}, (const jbyte*)mp->${c_name}); + (*env)->SetObjectField(env, dto, ${java_name}FieldId, ${java_name}); +""") + +u16_array_dto_field_setter_template = Template(""" + { + jshortArray ${java_name} = (*env)->NewShortArray(env, ${field_length}); + jshort * ${java_name}ArrayElements = (*env)->GetShortArrayElements(env, ${java_name}, NULL); + unsigned int _i; + for (_i = 0; _i < ${field_length}; _i++) { + ${java_name}ArrayElements[_i] = clib_net_to_host_u16(mp->${c_name}[_i]); + } + + (*env)->ReleaseShortArrayElements(env, ${java_name}, ${java_name}ArrayElements, 0); + (*env)->SetObjectField(env, dto, ${java_name}FieldId, ${java_name}); + } +""") + +u32_array_dto_field_setter_template = Template(""" + { + jintArray ${java_name} = (*env)->NewIntArray(env, ${field_length}); + jint * ${java_name}ArrayElements = (*env)->GetIntArrayElements(env, ${java_name}, NULL); + unsigned int _i; + for (_i = 0; _i < ${field_length}; _i++) { + ${java_name}ArrayElements[_i] = clib_net_to_host_u32(mp->${c_name}[_i]); + } + + (*env)->ReleaseIntArrayElements(env, ${java_name}, ${java_name}ArrayElements, 0); + (*env)->SetObjectField(env, dto, ${java_name}FieldId, ${java_name}); + } +""") + +# For each u64 array we get its elements. Then we convert values to host byte order. +# All changes to jlong* buffer are written to jlongArray (isCopy is set to NULL) +u64_array_dto_field_setter_template = Template(""" + { + jlongArray ${java_name} = (*env)->NewLongArray(env, ${field_length}); + jlong * ${java_name}ArrayElements = (*env)->GetLongArrayElements(env, ${java_name}, NULL); + unsigned int _i; + for (_i = 0; _i < ${field_length}; _i++) { + ${java_name}ArrayElements[_i] = clib_net_to_host_u64(mp->${c_name}[_i]); + } + + (*env)->ReleaseLongArrayElements(env, ${java_name}, ${java_name}ArrayElements, 0); + (*env)->SetObjectField(env, dto, ${java_name}FieldId, ${java_name}); + } +""") + +dto_field_setter_templates = {'u8': default_dto_field_setter_template, + 'u16': u16_dto_field_setter_template, + 'u32': u32_dto_field_setter_template, + 'i32': u32_dto_field_setter_template, + 'u64': u64_dto_field_setter_template, + 'f64': default_dto_field_setter_template, #fixme + 'u8[]': u8_array_dto_field_setter_template, + 'u16[]': u16_array_dto_field_setter_template, + 'u32[]': u32_array_dto_field_setter_template, + 'u64[]': u64_array_dto_field_setter_template + } + +# code fragment for checking result of the operation before sending request reply +callback_err_handler_template = Template(""" + // for negative result don't send callback message but send error callback + if (mp->retval<0) { + CallOnError("${handler_name}",mp->context,mp->retval); + return; + } + if (mp->retval == VNET_API_ERROR_IN_PROGRESS) { + clib_warning("Result in progress"); + return; + } +""") + +msg_handler_template = Template(""" +/** + * Handler for ${handler_name} vpe.api message. + * Generated based on $inputfile preparsed data: +$api_data + */ +static void vl_api_${handler_name}_t_handler (vl_api_${handler_name}_t * mp) +{ + vppjni_main_t * jm = &vppjni_main; + JNIEnv *env = jm->jenv; + $err_handler + + jmethodID constructor = (*env)->GetMethodID(env, ${class_ref_name}Class, "<init>", "()V"); + jmethodID callbackMethod = (*env)->GetMethodID(env, jm->callbackClass, "on${dto_name}", "(Lorg/openvpp/jvpp/dto/${dto_name};)V"); + + jobject dto = (*env)->NewObject(env, ${class_ref_name}Class, constructor); + $dto_setters + (*env)->CallVoidMethod(env, jm->callback, callbackMethod, dto); +}""") + +def generate_msg_handlers(func_list, inputfile): + handlers = [] + for f in func_list: + handler_name = f['name'] + dto_name = util.underscore_to_camelcase_upper(handler_name) + ref_name = util.underscore_to_camelcase(handler_name) + + if is_manually_generated(handler_name) or util.is_ignored(handler_name): + continue + + if not util.is_reply(dto_name) and not util.is_notification(handler_name): + continue + + if util.is_notification(handler_name): + dto_name = util.add_notification_suffix(dto_name) + ref_name = util.add_notification_suffix(ref_name) + + dto_setters = '' + err_handler = '' + # dto setters + for t in zip(f['c_types'], f['types'], f['args'], f['lengths']): + c_type = t[0] + jni_type = t[1] + c_name = t[2] + field_length = t[3][0] + + if jni_type.endswith('Array') and field_length == '0': + raise Exception('Variable array \'%s\' defined in message \'%s\' ' + 'should have defined length (e.g. \'%s[%s_length]\'' + % (c_name, handler_name, c_name, c_name)) + + # check if we are processing variable length array + if t[3][1]: + length_var_name = t[3][0] + length_field_type = f['c_types'][f['args'].index(length_var_name)] + field_length = variable_length_array_value_template.substitute(length_var_name=length_var_name) + if length_field_type != 'u8': # we need net to host conversion: + field_length = variable_length_array_template.substitute( + length_field_type=length_field_type, value=field_length) + + # for retval don't generate setters and generate retval check + if util.is_retval_field(c_name): + err_handler = callback_err_handler_template.substitute( + handler_name=handler_name + ) + continue + + java_field_name = util.underscore_to_camelcase(c_name) + jni_signature = util.jni_2_signature_mapping[jni_type] + jni_setter = util.jni_field_accessors[jni_type] + + dto_setters += dto_field_id_template.substitute( + java_name=java_field_name, + class_ref_name=ref_name, + jni_signature=jni_signature) + + dto_setter_template = dto_field_setter_templates[c_type] + + dto_setters += dto_setter_template.substitute( + java_name=java_field_name, + jni_signature=jni_signature, + c_name=c_name, + jni_setter=jni_setter, + field_length=field_length) + + handlers.append(msg_handler_template.substitute( + inputfile=inputfile, + api_data=util.api_message_to_javadoc(f), + handler_name=handler_name, + dto_name=dto_name, + class_ref_name=ref_name, + dto_setters=dto_setters, + err_handler=err_handler)) + + return "\n".join(handlers) + + +handler_registration_template = Template("""_(${upercase_name}, ${name}) \\ +""") + + +def generate_handler_registration(func_list): + handler_registration = ["#define foreach_vpe_api_msg \\\n"] + for f in func_list: + name = f['name'] + camelcase_name = util.underscore_to_camelcase(f['name']) + + if (not util.is_reply(camelcase_name) and not util.is_notification(name)) or util.is_ignored(name): + continue + + handler_registration.append(handler_registration_template.substitute( + name=name, + upercase_name=name.upper())) + + return "".join(handler_registration) + + +jvpp_c_template = Template("""/** + * This file contains JNI bindings for jvpp Java API. + * It was generated by jvpp_c_gen.py based on $inputfile + * (python representation of vpe.api generated by vppapigen). + */ + +void CallOnError(const char* call, int context, int retval); + +// JAVA class reference cache +$class_cache + +// JNI bindings +$jni_implementations + +// Message handlers +$msg_handlers + +// Registration of message handlers in vlib +$handler_registration +""") + +def generate_jvpp(func_list, inputfile): + """ Generates jvpp C file """ + print "Generating jvpp C" + + class_cache = generate_class_cache(func_list) + jni_impl = generate_jni_impl(func_list, inputfile) + msg_handlers = generate_msg_handlers(func_list, inputfile) + handler_registration = generate_handler_registration(func_list) + + jvpp_c_file = open("jvpp_gen.h", 'w') + jvpp_c_file.write(jvpp_c_template.substitute( + inputfile=inputfile, + class_cache=class_cache, + jni_implementations=jni_impl, + msg_handlers=msg_handlers, + handler_registration=handler_registration)) + jvpp_c_file.flush() + jvpp_c_file.close() + |