-#!/usr/bin/env python
+#!/usr/bin/env python2
#
-# Copyright (c) 2016 Cisco and/or its affiliates.
+# Copyright (c) 2016,2018 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:
# 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.
-
+#
from string import Template
-import util
+from jni_impl_gen import generate_jni_impl
+from jni_msg_handlers_gen import generate_jni_handlers
+from jni_type_handlers_gen import generate_type_handlers
+from jvpp_model import is_control_ping, is_dump, is_request, is_control_ping_reply
-variable_length_array_value_template = Template("""mp->${length_var_name}""")
-variable_length_array_template = Template("""clib_net_to_host_${length_field_type}(${value})""")
-dto_field_id_template = Template("""
- jfieldID ${field_reference_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${field_name}", "${jni_signature}");""")
+def generate_jni(work_dir, model, logger):
+ logger.debug("Generating jvpp C for %s" % model.json_api_files)
+ plugin_name = model.plugin_name
+ messages = model.messages
-default_dto_field_setter_template = Template("""
- (*env)->Set${jni_setter}(env, ${object_name}, ${field_reference_name}FieldId, mp->${c_name});
-""")
+ with open("%s/jvpp_%s_gen.h" % (work_dir, plugin_name), "w") as f:
+ f.write(_JVPP_C_TEMPLATE.substitute(
+ json_filename=model.json_api_files,
+ class_cache=_generate_class_cache(plugin_name, messages),
+ api_verification=_generate_api_verification(messages),
+ type_handlers=generate_type_handlers(model, logger),
+ jni_implementations=generate_jni_impl(model),
+ msg_handlers=generate_jni_handlers(model),
+ handler_registration=_generate_handler_registration(messages)))
-variable_length_array_value_template = Template("""mp->${length_var_name}""")
-variable_length_array_template = Template("""clib_net_to_host_${length_field_type}(${value})""")
+_JVPP_C_TEMPLATE = Template("""/**
+ * This file contains JNI bindings for jvpp Java API.
+ * It was generated by jvpp_jni_gen.py based on $json_filename.
+ */
+$class_cache
-u16_dto_field_setter_template = Template("""
- (*env)->Set${jni_setter}(env, ${object_name}, ${field_reference_name}FieldId, clib_net_to_host_u16(mp->${c_name}));
-""")
+$api_verification
-u32_dto_field_setter_template = Template("""
- (*env)->Set${jni_setter}(env, ${object_name}, ${field_reference_name}FieldId, clib_net_to_host_u32(mp->${c_name}));
-""")
+// Type handlers
+$type_handlers
-u64_dto_field_setter_template = Template("""
- (*env)->Set${jni_setter}(env, ${object_name}, ${field_reference_name}FieldId, clib_net_to_host_u64(mp->${c_name}));
-""")
-
-u8_array_dto_field_setter_template = Template("""
- jbyteArray ${field_reference_name} = (*env)->NewByteArray(env, ${field_length});
- (*env)->SetByteArrayRegion(env, ${field_reference_name}, 0, ${field_length}, (const jbyte*)mp->${c_name});
- (*env)->SetObjectField(env, ${object_name}, ${field_reference_name}FieldId, ${field_reference_name});
- (*env)->DeleteLocalRef(env, ${field_reference_name});
-""")
-
-u16_array_dto_field_setter_template = Template("""
- {
- jshortArray ${field_reference_name} = (*env)->NewShortArray(env, ${field_length});
- jshort * ${field_reference_name}ArrayElements = (*env)->GetShortArrayElements(env, ${field_reference_name}, NULL);
- unsigned int _i;
- for (_i = 0; _i < ${field_length}; _i++) {
- ${field_reference_name}ArrayElements[_i] = clib_net_to_host_u16(mp->${c_name}[_i]);
- }
-
- (*env)->ReleaseShortArrayElements(env, ${field_reference_name}, ${field_reference_name}ArrayElements, 0);
- (*env)->SetObjectField(env, ${object_name}, ${field_reference_name}FieldId, ${field_reference_name});
- (*env)->DeleteLocalRef(env, ${field_reference_name});
- }
-""")
+// JNI bindings
+$jni_implementations
-u32_array_dto_field_setter_template = Template("""
- {
- jintArray ${field_reference_name} = (*env)->NewIntArray(env, ${field_length});
- jint * ${field_reference_name}ArrayElements = (*env)->GetIntArrayElements(env, ${field_reference_name}, NULL);
- unsigned int _i;
- for (_i = 0; _i < ${field_length}; _i++) {
- ${field_reference_name}ArrayElements[_i] = clib_net_to_host_u32(mp->${c_name}[_i]);
- }
+// Message handlers
+$msg_handlers
- (*env)->ReleaseIntArrayElements(env, ${field_reference_name}, ${field_reference_name}ArrayElements, 0);
- (*env)->SetObjectField(env, ${object_name}, ${field_reference_name}FieldId, ${field_reference_name});
- (*env)->DeleteLocalRef(env, ${field_reference_name});
- }
+$handler_registration
""")
-# 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 ${field_reference_name} = (*env)->NewLongArray(env, ${field_length});
- jlong * ${field_reference_name}ArrayElements = (*env)->GetLongArrayElements(env, ${field_reference_name}, NULL);
- unsigned int _i;
- for (_i = 0; _i < ${field_length}; _i++) {
- ${field_reference_name}ArrayElements[_i] = clib_net_to_host_u64(mp->${c_name}[_i]);
- }
- (*env)->ReleaseLongArrayElements(env, ${field_reference_name}, ${field_reference_name}ArrayElements, 0);
- (*env)->SetObjectField(env, ${object_name}, ${field_reference_name}FieldId, ${field_reference_name});
- (*env)->DeleteLocalRef(env, ${field_reference_name});
- }
+def _generate_class_cache(plugin_name, messages):
+ references = []
+ for msg in messages:
+ if is_control_ping(msg) or is_control_ping_reply(msg):
+ # Skip control_ping managed by jvpp registry.
+ continue
+ references.append((
+ msg.java_name_lower,
+ 'io/fd/vpp/jvpp/%s/dto/%s' % (plugin_name, msg.java_name_upper)
+ ))
+
+ references.append(('callbackException', 'io/fd/vpp/jvpp/VppCallbackException'))
+
+ return _CLASS_CACHE_TEMPLATE.substitute(
+ class_references=_generate_class_references(references),
+ create_references=_generate_create_references(references),
+ delete_references=_generate_delete_references(references)
+ )
+
+_CLASS_CACHE_TEMPLATE = Template("""
+// JAVA class reference cache
+$class_references
+
+static int cache_class_references(JNIEnv* env) {
+$create_references
+ return 0;
+}
+
+static void delete_class_references(JNIEnv* env) {
+$delete_references
+}""")
+
+
+def _generate_class_references(references):
+ return "\n".join("jclass %sClass;" % r[0] for r in references)
+
+
+def _generate_create_references(references):
+ items = []
+ for r in references:
+ items.append(_CREATE_GLOBAL_REF_TEMPLATE.substitute(
+ ref_name=r[0],
+ fqn_name=r[1]
+ ))
+ return "".join(items)
+
+_CREATE_GLOBAL_REF_TEMPLATE = Template("""
+ ${ref_name}Class = (jclass)(*env)->NewGlobalRef(env, (*env)->FindClass(env, "${fqn_name}"));
+ if ((*env)->ExceptionCheck(env)) {
+ (*env)->ExceptionDescribe(env);
+ return JNI_ERR;
+ }""")
+
+
+def _generate_delete_references(references):
+ items = []
+ for r in references:
+ items.append(_DELETE_CLASS_INVOCATION_TEMPLATE.substitute(ref_name=r[0]))
+ return "".join(items)
+
+_DELETE_CLASS_INVOCATION_TEMPLATE = Template("""
+ if (${ref_name}Class) {
+ (*env)->DeleteGlobalRef(env, ${ref_name}Class);
+ }""")
+
+
+def _generate_api_verification(messages):
+ items = []
+ for msg in messages:
+ items.append("_(%s_%s) \\" % (msg.name, msg.crc))
+ return _API_VERIFICATION_TEMPLATE.substitute(messages="\n".join(items))
+
+_API_VERIFICATION_TEMPLATE = Template("""
+// List of supported API messages used for verification
+#define foreach_supported_api_message \\
+$messages
""")
-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
- }
-
-def jni_reply_handler_for_type(handler_name, ref_name, field_type, c_name, field_reference_name,
- field_name, field_length, is_variable_len_array, length_field_type,
- object_name="dto"):
+def _generate_handler_registration(messages):
"""
- Generates jni code that initializes a field of java object (dto or custom type).
- To be used in reply message handlers.
- :param field_type: type of the field to be initialized (as defined in vpe.api)
- :param c_name: name of the message struct member that stores initialization value
- :param field_reference_name: name of the field reference in generated code
- :param field_name: name of the field (camelcase)
- :param field_length: integer or name of variable that stores field length
- :param object_name: name of the object to be initialized
+ Generates msg handler registration for all messages except for dumps and requests.
+ :param messages: collection of VPP API messages.
"""
-
- # todo move validation to vppapigen
- if field_type.endswith('[]') and field_length == '0':
- raise Exception('Variable array \'%s\' defined in \'%s\' '
- 'should have defined length (e.g. \'%s[%s_length]\''
- % (c_name, handler_name, c_name, c_name))
-
- if is_variable_len_array:
- length_var_name = field_length
- 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
- if util.is_retval_field(c_name):
- return ""
-
- jni_signature = util.jni_2_signature_mapping[field_type]
- jni_setter = util.jni_field_accessors[field_type]
-
- result = dto_field_id_template.substitute(
- field_reference_name=field_reference_name,
- field_name=field_name,
- class_ref_name=ref_name,
- jni_signature=jni_signature)
-
- dto_setter_template = dto_field_setter_templates[field_type]
-
- result += dto_setter_template.substitute(
- jni_signature=jni_signature,
- object_name=object_name,
- field_reference_name=field_reference_name,
- c_name=c_name,
- jni_setter=jni_setter,
- field_length=field_length)
- return result
-
-
-request_field_identifier_template = Template("""
- jfieldID ${field_reference_name}FieldId = (*env)->GetFieldID(env, ${object_name}Class, "${field_name}", "${jni_signature}");
- ${jni_type} ${field_reference_name} = (*env)->Get${jni_getter}(env, ${object_name}, ${field_reference_name}FieldId);
- """)
-
-array_length_enforcement_template = Template("""
- size_t max_size = ${field_length};
- if (cnt > max_size) cnt = max_size;""")
-
-u8_struct_setter_template = Template("""
- mp->${c_name} = ${field_reference_name};""")
-
-u16_struct_setter_template = Template("""
- mp->${c_name} = clib_host_to_net_u16(${field_reference_name});""")
-
-u32_struct_setter_template = Template("""
- mp->${c_name} = clib_host_to_net_u32(${field_reference_name});""")
-
-i32_struct_setter_template = Template("""
- mp->${c_name} = clib_host_to_net_i32(${field_reference_name});!""")
-
-u64_struct_setter_template = Template("""
- mp->${c_name} = clib_host_to_net_u64(${field_reference_name});""")
-
-array_length_enforcement_template = Template("""
- size_t max_size = ${field_length};
- if (cnt > max_size) cnt = max_size;""")
-
-u8_array_struct_setter_template = Template("""
- if (${field_reference_name}) {
- jsize cnt = (*env)->GetArrayLength (env, ${field_reference_name});
- ${field_length_check}
- (*env)->GetByteArrayRegion(env, ${field_reference_name}, 0, cnt, (jbyte *)mp->${c_name});
- }
+ handlers = []
+ for msg in messages:
+ if is_control_ping(msg) or is_control_ping_reply(msg):
+ # Skip control_ping managed by jvpp registry.
+ continue
+ if is_dump(msg) or is_request(msg):
+ continue
+ name = msg.name
+ crc = msg.crc
+ handlers.append("_(%s_%s, %s) \\" % (name, crc, name))
+ return _HANDLER_REGISTRATION_TEMPLATE.substitute(handlers="\n".join(handlers))
+
+_HANDLER_REGISTRATION_TEMPLATE = Template("""
+// Registration of message handlers in vlib
+#define foreach_api_reply_handler \\
+$handlers
""")
-
-u16_array_struct_setter_template = Template("""
- if (${field_reference_name}) {
- jshort * ${field_reference_name}ArrayElements = (*env)->GetShortArrayElements(env, ${field_reference_name}, NULL);
- size_t _i;
- jsize cnt = (*env)->GetArrayLength (env, ${field_reference_name});
- ${field_length_check}
- for (_i = 0; _i < cnt; _i++) {
- mp->${c_name}[_i] = clib_host_to_net_u16(${field_reference_name}ArrayElements[_i]);
- }
- (*env)->ReleaseShortArrayElements (env, ${field_reference_name}, ${field_reference_name}ArrayElements, 0);
- }
- """)
-
-u32_array_struct_setter_template = Template("""
- if (${field_reference_name}) {
- jint * ${field_reference_name}ArrayElements = (*env)->GetIntArrayElements(env, ${field_reference_name}, NULL);
- size_t _i;
- jsize cnt = (*env)->GetArrayLength (env, ${field_reference_name});
- ${field_length_check}
- for (_i = 0; _i < cnt; _i++) {
- mp->${c_name}[_i] = clib_host_to_net_u32(${field_reference_name}ArrayElements[_i]);
- }
- (*env)->ReleaseIntArrayElements (env, ${field_reference_name}, ${field_reference_name}ArrayElements, 0);
- }
- """)
-
-u64_array_struct_setter_template = Template("""
- if (${field_reference_name}) {
- jlong * ${field_reference_name}ArrayElements = (*env)->GetLongArrayElements(env, ${field_reference_name}, NULL);
- size_t _i;
- jsize cnt = (*env)->GetArrayLength (env, ${field_reference_name});
- ${field_length_check}
- for (_i = 0; _i < cnt; _i++) {
- mp->${c_name}[_i] = clib_host_to_net_u64(${field_reference_name}ArrayElements[_i]);
- }
- (*env)->ReleaseLongArrayElements (env, ${field_reference_name}, ${field_reference_name}ArrayElements, 0);
- }
- """)
-
-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
- }
-
-
-def jni_request_binding_for_type(field_type, c_name, field_reference_name, field_name, field_length,
- is_variable_len_array, object_name="request"):
- """
- Generates jni code that initializes C structure that corresponds to a field of java object
- (dto or custom type). To be used in request message handlers.
- :param field_type: type of the field to be initialized (as defined in vpe.api)
- :param c_name: name of the message struct member to be initialized
- :param field_reference_name: name of the field reference in generated code
- :param field_name: name of the field (camelcase)
- :param field_length: integer or name of variable that stores field length
- :param object_name: name of the object to be initialized
- """
- # field identifiers
- jni_type = util.vpp_2_jni_type_mapping[field_type]
- jni_signature = util.jni_2_signature_mapping[field_type]
- jni_getter = util.jni_field_accessors[field_type]
-
- # field identifier
- msg_initialization = request_field_identifier_template.substitute(
- jni_type=jni_type,
- field_reference_name=field_reference_name,
- field_name=field_name,
- jni_signature=jni_signature,
- jni_getter=jni_getter,
- object_name=object_name)
-
- # field setter
- field_length_check = ""
-
- # check if we are processing variable length array:
- if is_variable_len_array:
- field_length = util.underscore_to_camelcase(field_length)
-
- # enforce max length if array has fixed length or uses variable length syntax
- if str(field_length) != "0":
- field_length_check = array_length_enforcement_template.substitute(field_length=field_length)
-
- struct_setter_template = struct_setter_templates[field_type]
-
- msg_initialization += struct_setter_template.substitute(
- c_name=c_name,
- field_reference_name=field_reference_name,
- field_length_check=field_length_check)
-
- return msg_initialization
Code Review / vpp.git / blobdiff