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authorDamjan Marion <damarion@cisco.com>2018-07-30 16:10:14 +0200
committerDave Barach <openvpp@barachs.net>2018-08-01 20:28:53 +0000
commitcc4a5e8089967f0c266e9c5ed319c38c111004cd (patch)
treebc290e03e12a0a02c3fc274740c96eef9e1707c6 /extras/japi/java/jvpp/gen
parenta14c16674023bd6672ca49e3551c707702711050 (diff)
Move java api to extras/
Change-Id: Ibd5cbbdfb22a235442cddaebc9eae9a3c4e35ec9 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'extras/japi/java/jvpp/gen')
-rwxr-xr-xextras/japi/java/jvpp/gen/jvpp_gen.py93
-rw-r--r--extras/japi/java/jvpp/gen/jvppgen/__init__.py0
-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/callback_gen.py73
-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/dto_gen.py231
-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/enums_gen.py74
-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/jni_common_gen.py427
-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/jni_gen.py160
-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/jni_impl_gen.py115
-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/jni_msg_handlers_gen.py105
-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/jni_type_handlers_gen.py222
-rw-r--r--extras/japi/java/jvpp/gen/jvppgen/jvpp_callback_facade_gen.py289
-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/jvpp_common_gen.py114
-rw-r--r--extras/japi/java/jvpp/gen/jvppgen/jvpp_future_facade_gen.py338
-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/jvpp_ifc_gen.py71
-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/jvpp_impl_gen.py173
-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/jvpp_model.py570
-rw-r--r--extras/japi/java/jvpp/gen/jvppgen/notification_gen.py226
-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/types_gen.py60
-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/unions_gen.py98
19 files changed, 3439 insertions, 0 deletions
diff --git a/extras/japi/java/jvpp/gen/jvpp_gen.py b/extras/japi/java/jvpp/gen/jvpp_gen.py
new file mode 100755
index 00000000000..067a92f86be
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvpp_gen.py
@@ -0,0 +1,93 @@
+#!/usr/bin/env python2
+#
+# 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:
+#
+# 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 argparse
+import logging
+import os
+import sys
+
+from jvppgen.types_gen import generate_types
+from jvppgen.enums_gen import generate_enums
+from jvppgen.unions_gen import generate_unions
+from jvppgen.dto_gen import generate_dtos
+from jvppgen.jvpp_ifc_gen import generate_java_ifc
+from jvppgen.jvpp_impl_gen import generate_java_impl
+from jvppgen.callback_gen import generate_callbacks
+from jvppgen.jni_gen import generate_jni
+from jvppgen.notification_gen import generate_notifications
+from jvppgen.jvpp_future_facade_gen import generate_future_facade
+from jvppgen.jvpp_callback_facade_gen import generate_callback_facade
+from jvppgen.jvpp_model import JVppModel
+
+
+def generate_jvpp(root_dir, model, logger):
+ base_dir = "%s/target/%s" % (root_dir, model.plugin_package.replace(".", "/"))
+ generate_types(_work_dir(base_dir, "types"), model, logger)
+ generate_enums(_work_dir(base_dir, "types"), model, logger)
+ generate_unions(_work_dir(base_dir, "types"), model, logger)
+ generate_dtos(_work_dir(base_dir, "dto"), model, logger)
+ generate_java_ifc(_work_dir(base_dir), model, logger)
+ generate_java_impl(_work_dir(base_dir), model, logger)
+ generate_callbacks(_work_dir(base_dir, "callback"), model, logger)
+ generate_jni(root_dir, model, logger)
+ generate_notifications(_work_dir(base_dir, "notification"), model, logger)
+ generate_future_facade(_work_dir(base_dir, "future"), model, logger)
+ generate_callback_facade(_work_dir(base_dir, "callfacade"), model, logger)
+
+
+def _work_dir(work_dir, sub_dir=None):
+ if sub_dir:
+ work_dir = "%s/%s" % (work_dir, sub_dir)
+ try:
+ os.makedirs(work_dir)
+ except OSError:
+ if not os.path.isdir(work_dir):
+ raise
+ return work_dir
+
+
+def _init_logger():
+ try:
+ verbose = int(os.getenv("V", 0))
+ except:
+ verbose = 0
+
+ log_level = logging.WARNING
+ if verbose == 1:
+ log_level = logging.INFO
+ elif verbose >= 2:
+ log_level = logging.DEBUG
+
+ logging.basicConfig(stream=sys.stdout, level=log_level)
+ logger = logging.getLogger("JVPP GEN")
+ logger.setLevel(log_level)
+ return logger
+
+
+if __name__ == '__main__':
+ logger = _init_logger()
+
+ argparser = argparse.ArgumentParser(description="VPP Java API generator")
+ argparser.add_argument('-i', nargs='+', metavar='api_file.json', help="json vpp api file(s)")
+ argparser.add_argument('--plugin_name')
+ argparser.add_argument('--root_dir')
+ args = argparser.parse_args()
+
+ logger.info("Generating Java API for %s" % args.i)
+ logger.debug("plugin_name: %s" % args.plugin_name)
+ logger.debug("root_dir: %s" % args.root_dir)
+
+ model = JVppModel(logger, args.i, args.plugin_name)
+ generate_jvpp(args.root_dir, model, logger)
diff --git a/extras/japi/java/jvpp/gen/jvppgen/__init__.py b/extras/japi/java/jvpp/gen/jvppgen/__init__.py
new file mode 100644
index 00000000000..e69de29bb2d
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/__init__.py
diff --git a/extras/japi/java/jvpp/gen/jvppgen/callback_gen.py b/extras/japi/java/jvpp/gen/jvppgen/callback_gen.py
new file mode 100755
index 00000000000..14aa8b760a5
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/callback_gen.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python2
+#
+# 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:
+#
+# 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.
+#
+from string import Template
+
+from jvpp_model import is_request, is_dump, is_control_ping, is_control_ping_reply
+
+
+def generate_callbacks(work_dir, model, logger):
+ json_api_files = model.json_api_files
+ logger.debug("Generating Callback interfaces for %s" % json_api_files)
+ plugin_package = model.plugin_package
+
+ callbacks = []
+ for msg in model.messages:
+ name = msg.java_name_upper
+ 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
+
+ callbacks.append("%s.callback.%sCallback" % (plugin_package, name))
+ callback = _CALLBACK_TEMPLATE.substitute(
+ plugin_package=plugin_package,
+ json_filename=json_api_files,
+ name=name)
+
+ with open("%s/%sCallback.java" % (work_dir, name), "w") as f:
+ f.write(callback)
+
+ plugin_name = model.plugin_java_name
+ with open("%s/JVpp%sGlobalCallback.java" % (work_dir, plugin_name), "w") as f:
+ f.write(_GLOBAL_CALLBACK_TEMPLATE.substitute(
+ plugin_package=plugin_package,
+ json_filename=json_api_files,
+ plugin_name=plugin_name,
+ callbacks=", ".join(callbacks)
+ ))
+
+_CALLBACK_TEMPLATE = Template("""package $plugin_package.callback;
+
+/**
+ * <p>Represents callback for plugin's api message.
+ * <br>It was generated by jvpp_callback_gen.py based on $json_filename.
+ */
+public interface ${name}Callback extends io.fd.vpp.jvpp.callback.JVppCallback {
+
+ void on${name}(${plugin_package}.dto.${name} reply);
+}
+""")
+
+_GLOBAL_CALLBACK_TEMPLATE = Template("""package $plugin_package.callback;
+
+/**
+ * <p>Global aggregated callback interface.
+ * <br>It was generated by jvpp_callback_gen.py based on $json_filename.
+ */
+public interface JVpp${plugin_name}GlobalCallback extends io.fd.vpp.jvpp.callback.ControlPingCallback, $callbacks {
+}
+""")
diff --git a/extras/japi/java/jvpp/gen/jvppgen/dto_gen.py b/extras/japi/java/jvpp/gen/jvppgen/dto_gen.py
new file mode 100755
index 00000000000..ca015a30456
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/dto_gen.py
@@ -0,0 +1,231 @@
+#!/usr/bin/env python2
+#
+# 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:
+#
+# 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.
+
+from string import Template
+
+from jvpp_common_gen import generate_hash_code, generate_equals, generate_to_string, generate_fields
+from jvpp_model import is_request, is_reply, is_retval, is_dump, is_details, is_event, is_control_ping, \
+ is_control_ping_reply
+
+
+def generate_dtos(work_dir, model, logger):
+ logger.debug("Generating DTOs for %s " % model.json_api_files)
+ _generate_message_dtos(work_dir, model, logger)
+ _generate_dump_reply_wrappers(work_dir, model, logger)
+
+
+def _generate_message_dtos(work_dir, model, logger):
+ for msg in model.messages:
+ logger.debug("Generating DTO for message %s", msg)
+ class_name = msg.java_name_upper
+
+ if is_control_ping(msg) or is_control_ping_reply(msg):
+ # Skip control_ping managed by jvpp registry.
+ continue
+ if is_request(msg):
+ dto = _generate_request_dto(msg, model, base_type="JVppRequest")
+ elif is_dump(msg):
+ dto = _generate_request_dto(msg, model, base_type="JVppDump")
+ elif is_reply(msg) or is_details(msg):
+ dto = _generate_reply_dto(msg, model)
+ elif is_event(msg):
+ dto = _generate_event_dto(msg, model)
+ else:
+ logger.warn("Failed to generate DTO for: %s. Message type is not supported." % msg)
+ continue
+ with open("%s/%s.java" % (work_dir, class_name), "w") as f:
+ f.write(dto)
+
+
+def _generate_request_dto(msg, model, base_type):
+ msg_java_name_upper = msg.java_name_upper
+ fields = msg.fields
+ return _REQUEST_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ json_filename=model.json_api_files,
+ json_definition=msg.doc,
+ class_name=msg_java_name_upper,
+ base_type=base_type,
+ fields=generate_fields(fields),
+ hash_code=generate_hash_code(fields),
+ equals=generate_equals(msg_java_name_upper, fields),
+ to_string=generate_to_string(msg_java_name_upper, fields),
+ send=_generate_send(model, msg))
+
+_REQUEST_TEMPLATE = Template("""
+package $plugin_package.dto;
+
+/**
+ * <p>This class represents request DTO.
+ * <br>It was generated by dto_gen.py based on $json_filename:
+ * <pre>
+$json_definition
+ * </pre>
+ */
+public final class $class_name implements io.fd.vpp.jvpp.dto.$base_type {
+$fields
+$hash_code
+$equals
+$to_string
+$send
+}
+""")
+
+
+def _generate_send(model, msg):
+ return _SEND_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ plugin_name=model.plugin_java_name,
+ method_name=msg.java_name_lower,
+ args="this" if msg.has_fields else ""
+ )
+
+_SEND_TEMPLATE = Template("""
+ @Override
+ public int send(final io.fd.vpp.jvpp.JVpp jvpp) throws io.fd.vpp.jvpp.VppInvocationException {
+ return (($plugin_package.JVpp${plugin_name})jvpp).$method_name($args);
+ }""")
+
+
+def _generate_reply_dto(msg, model):
+ msg_java_name_upper = msg.java_name_upper
+ # Negative retval is mapped to java exception, so filter it out:
+ fields = filter(lambda field: not is_retval(field), msg.fields)
+ return _REPLY_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ json_filename=model.json_api_files,
+ json_definition=msg.doc,
+ class_name=msg_java_name_upper,
+ request_name=msg.request_java,
+ fields=generate_fields(fields),
+ hash_code=generate_hash_code(fields),
+ equals=generate_equals(msg_java_name_upper, fields),
+ to_string=generate_to_string(msg_java_name_upper, fields))
+
+_REPLY_TEMPLATE = Template("""
+package $plugin_package.dto;
+
+/**
+ * <p>This class represents reply DTO.
+ * <br>It was generated by jvpp_dto_gen.py based on $json_filename:
+ * <pre>
+$json_definition
+ * </pre>
+ */
+public final class $class_name implements io.fd.vpp.jvpp.dto.JVppReply<$plugin_package.dto.$request_name> {
+$fields
+$hash_code
+$equals
+$to_string
+}
+""")
+
+
+def _generate_event_dto(msg, model):
+ msg_java_name_upper = msg.java_name_upper
+ # Negative retval is mapped to java exception, so filter it out:
+ fields = filter(lambda field: not is_retval(field), msg.fields)
+ return _EVENT_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ json_filename=model.json_api_files,
+ json_definition=msg.doc,
+ class_name=msg_java_name_upper,
+ fields=generate_fields(fields),
+ hash_code=generate_hash_code(fields),
+ equals=generate_equals(msg_java_name_upper, fields),
+ to_string=generate_to_string(msg_java_name_upper, fields))
+
+_EVENT_TEMPLATE = Template("""
+package $plugin_package.dto;
+
+/**
+ * <p>This class represents event DTO.
+ * <br>It was generated by jvpp_dto_gen.py based on $json_filename:
+ * <pre>
+$json_definition
+ * </pre>
+ */
+public final class $class_name {
+$fields
+$hash_code
+$equals
+$to_string
+}
+""")
+
+
+def _generate_dump_reply_wrappers(work_dir, model, logger):
+ for msg in model.messages:
+ if is_details(msg):
+ logger.debug("Generating ReplyDump DTO for message %s", msg)
+ details_class = msg.java_name_upper
+ dto = _REPLY_DUMP_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ json_filename=model.json_api_files,
+ json_definition=msg.doc,
+ details_class=details_class,
+ details_field=msg.java_name_lower,
+ dump_class=msg.request_java
+ )
+ with open("%s/%sReplyDump.java" % (work_dir, details_class), "w") as f:
+ f.write(dto)
+
+_REPLY_DUMP_TEMPLATE = Template("""
+package $plugin_package.dto;
+
+/**
+ * <p>This class represents dump reply wrapper.
+ * <br>It was generated by jvpp_dto_gen.py based on $json_filename:
+ * <pre>
+$json_definition
+ * </pre>
+ */
+public final class ${details_class}ReplyDump implements io.fd.vpp.jvpp.dto.JVppReplyDump<${plugin_package}.dto.${dump_class}, ${plugin_package}.dto.${details_class}> {
+
+ public java.util.List<${details_class}> ${details_field} = new java.util.ArrayList<>();
+
+ @Override
+ @io.fd.vpp.jvpp.coverity.SuppressFBWarnings("UWF_UNWRITTEN_PUBLIC_OR_PROTECTED_FIELD")
+ public int hashCode() {
+ return java.util.Objects.hash(${details_field});
+ }
+
+ @Override
+ public boolean equals(final Object o) {
+ if (this == o) {
+ return true;
+ }
+ if (o == null || getClass() != o.getClass()) {
+ return false;
+ }
+
+ final ${details_class}ReplyDump other = (${details_class}ReplyDump) o;
+
+ if (!java.util.Objects.equals(this.${details_field}, other.${details_field})) {
+ return false;
+ }
+
+ return true;
+ }
+
+ @Override
+ public String toString() {
+ return "${details_class}ReplyDump{" +
+ "${details_field}=" + ${details_field} + "}";
+ }
+
+
+}
+""")
diff --git a/extras/japi/java/jvpp/gen/jvppgen/enums_gen.py b/extras/japi/java/jvpp/gen/jvppgen/enums_gen.py
new file mode 100755
index 00000000000..8ba96558428
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/enums_gen.py
@@ -0,0 +1,74 @@
+#!/usr/bin/env python2
+#
+# 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:
+#
+# 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.
+from string import Template
+
+from jvpp_model import Enum
+
+
+def generate_enums(work_dir, model, logger):
+ logger.debug("Generating enums for %s " % model.json_api_files)
+
+ for t in model.types:
+ if not isinstance(t, Enum):
+ continue
+ logger.debug("Generating DTO for enum %s", t)
+ type_class_name = t.java_name
+ type_class = _ENUM_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ c_type_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ java_enum_name=type_class_name,
+ constants=_generate_constants(t.constants),
+ value_type=t.value.type.java_name
+ )
+ with open("%s/%s.java" % (work_dir, type_class_name), "w") as f:
+ f.write(type_class)
+
+_ENUM_TEMPLATE = Template("""
+package $plugin_package.types;
+
+/**
+ * <p>This class represents $c_type_name enum definition.
+ * <br>It was generated by enums_gen.py based on $json_filename:
+ * <pre>
+$json_definition
+ * </pre>
+ */
+public enum $java_enum_name {
+$constants;
+
+ public final $value_type value;
+
+ $java_enum_name(final $value_type value) {
+ this.value = value;
+ }
+
+ public static $java_enum_name forValue(final $value_type value) {
+ for ($java_enum_name enumeration : $java_enum_name.values()) {
+ if (value == enumeration.value) {
+ return enumeration;
+ }
+ }
+ return null;
+ }
+}
+""")
+
+
+def _generate_constants(constants):
+ return ",\n".join(_CONSTANT_TEMPLATE.substitute(name=c['name'], value=c['value']) for c in constants)
+
+_CONSTANT_TEMPLATE = Template(""" $name($value)""")
diff --git a/extras/japi/java/jvpp/gen/jvppgen/jni_common_gen.py b/extras/japi/java/jvpp/gen/jvppgen/jni_common_gen.py
new file mode 100755
index 00000000000..397b92b528f
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/jni_common_gen.py
@@ -0,0 +1,427 @@
+#!/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.
+#
+from string import Template
+
+from jvpp_model import is_array, is_retval, Class, Enum, Union
+
+
+def generate_j2c_identifiers(element, class_ref_name, object_ref_name):
+ identifiers = []
+ for field in element.fields:
+ field_type = field.type
+ identifiers.append(_REQUEST_FIELD_IDENTIFIER_TEMPLATE.substitute(
+ java_name=field.java_name,
+ class_ref_name=class_ref_name,
+ jni_signature=field_type.jni_signature,
+ jni_type=field_type.jni_type,
+ jni_accessor=field_type.jni_accessor,
+ object_ref_name=object_ref_name
+ ))
+ return "".join(identifiers)
+
+_REQUEST_FIELD_IDENTIFIER_TEMPLATE = Template("""
+ jfieldID ${java_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}, "${java_name}", "${jni_signature}");
+ ${jni_type} ${java_name} = (*env)->Get${jni_accessor}Field(env, ${object_ref_name}, ${java_name}FieldId);
+""")
+
+
+# TODO(VPP-1187): do not inline JNI object creation inside message handlers to reduce number of special cases
+def generate_j2c_swap(element, struct_ref_name):
+ initialization = []
+ for field in element.fields:
+ initialization.append(generate_j2c_field_swap(field, struct_ref_name))
+ return "\n".join(initialization)
+
+
+def generate_j2c_field_swap(field, struct_ref_name):
+ if is_array(field):
+ return _generate_j2c_array_swap(field, struct_ref_name)
+ else:
+ return _generate_j2c_scalar_swap(field, struct_ref_name)
+
+
+def _generate_j2c_array_swap(field, struct_ref_name):
+ # TODO(VPP-1186): move the logic to JNI generators
+ base_type = field.type.base_type
+ if isinstance(base_type, (Class, Enum, Union)):
+ return _generate_j2c_object_array_swap(field, struct_ref_name)
+ elif base_type.is_swap_needed:
+ return _generate_j2c_primitive_type_array_swap(field, struct_ref_name)
+ else:
+ return _generate_j2c_primitive_type_array_no_swap(field, struct_ref_name)
+
+
+def _generate_j2c_object_array_swap(field, struct_ref_name):
+ field_type = field.type
+ field_reference_name = field.java_name
+ c_name = field.name
+ host = "%sArrayElement" % field_reference_name
+ net = "%s->%s[_i]" % (struct_ref_name, c_name)
+ swap_elements = field_type.get_host_to_net_function(host, net)
+ return _J2C_OBJECT_ARRAY_SWAP_TEMPLATE.substitute(
+ field_reference_name=field_reference_name,
+ field_length_check=_generate_field_length_check(field),
+ swap_elements=swap_elements)
+
+_J2C_OBJECT_ARRAY_SWAP_TEMPLATE = Template("""
+ {
+ if (${field_reference_name}) {
+ size_t _i;
+ jsize cnt = (*env)->GetArrayLength (env, ${field_reference_name});
+ ${field_length_check}
+ for (_i = 0; _i < cnt; _i++) {
+ jobject ${field_reference_name}ArrayElement = (*env)->GetObjectArrayElement(env, ${field_reference_name}, _i);
+ ${swap_elements};
+ }
+ }
+ }
+""")
+
+
+def _generate_j2c_primitive_type_array_swap(field, struct_ref_name):
+ field_reference_name = field.java_name
+ field_type = field.type
+ host = "%sArrayElements[_i]" % field_reference_name
+ net = "%s->%s[_i]" % (struct_ref_name, field.name)
+ swap_elements = field_type.get_host_to_net_function(host, net)
+ return _J2C_PRIMITIVE_TYPE_ARRAY_SWAP_TEMPLATE.substitute(
+ field_reference_name=field_reference_name,
+ field_length_check=_generate_field_length_check(field),
+ base_type=field_type.base_type.jni_accessor,
+ jni_base_type=field_type.base_type.jni_type,
+ swap_elements=swap_elements
+ )
+
+_J2C_PRIMITIVE_TYPE_ARRAY_SWAP_TEMPLATE = Template("""
+ if (${field_reference_name}) {
+ ${jni_base_type} * ${field_reference_name}ArrayElements = (*env)->Get${base_type}ArrayElements(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++) {
+ ${swap_elements};
+ }
+ (*env)->Release${base_type}ArrayElements (env, ${field_reference_name}, ${field_reference_name}ArrayElements, 0);
+ }
+ """)
+
+
+def _generate_j2c_primitive_type_array_no_swap(field, struct_ref_name):
+ field_type = field.type
+ return _J2C_PRIMITIVE_TYPE_ARRAY_NO_SWAP_TEMPLATE.substitute(
+ field_reference_name=field.java_name,
+ field_length_check=_generate_field_length_check(field),
+ base_type=field_type.base_type.jni_accessor,
+ jni_base_type=field_type.base_type.jni_type,
+ struct_reference_name=struct_ref_name,
+ c_name=field.name
+ )
+
+_J2C_PRIMITIVE_TYPE_ARRAY_NO_SWAP_TEMPLATE = Template("""
+ if (${field_reference_name}) {
+ jsize cnt = (*env)->GetArrayLength (env, ${field_reference_name});
+ ${field_length_check}
+ (*env)->Get${base_type}ArrayRegion(env, ${field_reference_name}, 0, cnt, (${jni_base_type} *)${struct_reference_name}->${c_name});
+ }
+""")
+
+
+def _generate_field_length_check(field):
+ # Enforce max length if array has fixed length or uses variable length syntax
+ field_length = str(field.array_len)
+ if field.array_len_field:
+ field_length = field.array_len_field.java_name
+
+ # TODO: remove when ZLAs without length field are disabled
+ if field_length != "0":
+ return _FIELD_LENGTH_CHECK.substitute(field_length=field_length)
+ else:
+ return ""
+
+# Make sure we do not write more elements that are expected
+_FIELD_LENGTH_CHECK = Template("""
+ size_t max_size = ${field_length};
+ if (cnt > max_size) cnt = max_size;""")
+
+
+def _generate_j2c_scalar_swap(field, struct_ref_name):
+ field_type = field.type
+ if field_type.is_swap_needed:
+ host = field.java_name
+ net = "%s->%s" % (struct_ref_name, field.name)
+ return " %s;" % field_type.get_host_to_net_function(host, net)
+ else:
+ return " %s->%s = %s;" % (struct_ref_name, field.name, field.java_name)
+
+
+def generate_c2j_swap(element, object_ref_name, struct_ref_name):
+ msg_java_name = element.java_name_lower
+ initialization = []
+ for field in element.fields:
+ if is_retval(field):
+ # For retval don't generate setters and generate retval check
+ continue
+ elif is_array(field):
+ initialization.append(_generate_c2j_array_swap(msg_java_name, field, object_ref_name, struct_ref_name))
+ else:
+ initialization.append(_generate_c2j_scalar_swap(msg_java_name, field, object_ref_name, struct_ref_name))
+ return "".join(initialization)
+
+
+def _generate_c2j_array_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ # TODO(VPP-1186): move the logic to JNI generators
+ base_type = field.type.base_type
+ if isinstance(base_type, (Class, Union)):
+ return _generate_c2j_object_array_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+ elif isinstance(base_type, Enum):
+ return _generate_c2j_enum_array_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+ elif base_type.is_swap_needed:
+ return _generate_c2j_primitive_type_array_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+ else:
+ return _generate_c2j_primitive_type_array_no_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+
+
+def _generate_c2j_object_array_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ return _C2J_OBJECT_ARRAY_SWAP_TEMPLATE.substitute(
+ field_reference_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_name=field_type.base_type.jni_name,
+ field_length=_generate_array_length(field, struct_ref_name),
+ net_to_host_function=field_type.net_to_host_function,
+ struct_ref_name=struct_ref_name,
+ object_ref_name=object_ref_name,
+ c_name=field.name
+ )
+
+_C2J_OBJECT_ARRAY_SWAP_TEMPLATE = Template("""
+ jfieldID ${field_reference_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${field_reference_name}", "${jni_signature}");
+ {
+ jclass ${field_reference_name}Class = (*env)->FindClass(env, "${jni_name}");
+ jobjectArray ${field_reference_name} = (*env)->NewObjectArray(env, ${field_length}, ${field_reference_name}Class, 0);
+ jmethodID ${field_reference_name}Constructor = (*env)->GetMethodID(env, ${field_reference_name}Class, "<init>", "()V");
+ unsigned int _i;
+ for (_i = 0; _i < ${field_length}; _i++) {
+ jobject ${field_reference_name}ArrayElement = (*env)->NewObject(env, ${field_reference_name}Class, ${field_reference_name}Constructor);
+ ${net_to_host_function}(env, &(${struct_ref_name}->${c_name}[_i]), ${field_reference_name}ArrayElement);
+ (*env)->SetObjectArrayElement(env, ${field_reference_name}, _i, ${field_reference_name}ArrayElement);
+ (*env)->DeleteLocalRef(env, ${field_reference_name}ArrayElement);
+ }
+ (*env)->SetObjectField(env, ${object_ref_name}, ${field_reference_name}FieldId, ${field_reference_name});
+ (*env)->DeleteLocalRef(env, ${field_reference_name});
+ }
+""")
+
+
+def _generate_c2j_enum_array_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ base_type = field_type.base_type
+ return _C2J_ENUM_ARRAY_SWAP_TEMPLATE.substitute(
+ field_reference_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_name=base_type.jni_name,
+ field_length=_generate_array_length(field, struct_ref_name),
+ net_to_host_function=field_type.net_to_host_function,
+ jni_signature_enum_value=base_type.value.type.jni_signature,
+ struct_ref_name=struct_ref_name,
+ object_ref_name=object_ref_name,
+ c_name=field.name
+ )
+
+_C2J_ENUM_ARRAY_SWAP_TEMPLATE = Template("""
+ jfieldID ${field_reference_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${field_reference_name}", "${jni_signature}");
+ {
+ jclass ${field_reference_name}Class = (*env)->FindClass(env, "${jni_name}");
+ jobjectArray ${field_reference_name} = (*env)->NewObjectArray(env, ${field_length}, ${field_reference_name}Class, 0);
+ jmethodID ${field_reference_name}Constructor = (*env)->GetStaticMethodID(env, ${field_reference_name}Class, "forValue", "(${jni_signature_enum_value})${jni_signature}");
+ unsigned int _i;
+ for (_i = 0; _i < ${field_length}; _i++) {
+ jobject ${field_reference_name}ArrayElement = (*env)->CallStaticObjectMethod(env, ${field_reference_name}Class, ${field_reference_name}Constructor, ${net_to_host_function}(${struct_ref_name}->${c_name}[_i]));
+ (*env)->SetObjectArrayElement(env, ${field_reference_name}, _i, ${field_reference_name}ArrayElement);
+ (*env)->DeleteLocalRef(env, ${field_reference_name}ArrayElement);
+ }
+ (*env)->SetObjectField(env, ${object_ref_name}, ${field_reference_name}FieldId, ${field_reference_name});
+ (*env)->DeleteLocalRef(env, ${field_reference_name});
+ }
+""")
+
+
+def _generate_c2j_primitive_type_array_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ return _C2J_PRIMITIVE_TYPE_ARRAY_SWAP_TEMPLATE.substitute(
+ field_reference_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_type=field_type.jni_type,
+ base_type=field_type.base_type.jni_accessor,
+ field_length=_generate_array_length(field, struct_ref_name),
+ jni_base_type=field_type.base_type.jni_type,
+ object_ref_name=object_ref_name,
+ struct_ref_name=struct_ref_name,
+ net_to_host_function=field_type.net_to_host_function,
+ c_name=field.name
+ )
+
+_C2J_PRIMITIVE_TYPE_ARRAY_SWAP_TEMPLATE = Template("""
+ jfieldID ${field_reference_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${field_reference_name}", "${jni_signature}");
+ {
+ ${jni_type} ${field_reference_name} = (*env)->New${base_type}Array(env, ${field_length});
+ ${jni_base_type} * ${field_reference_name}ArrayElements = (*env)->Get${base_type}ArrayElements(env, ${field_reference_name}, NULL);
+ unsigned int _i;
+ for (_i = 0; _i < ${field_length}; _i++) {
+ ${field_reference_name}ArrayElements[_i] = ${net_to_host_function}(${struct_ref_name}->${c_name}[_i]);
+ }
+
+ (*env)->Release${base_type}ArrayElements(env, ${field_reference_name}, ${field_reference_name}ArrayElements, 0);
+ (*env)->SetObjectField(env, ${object_ref_name}, ${field_reference_name}FieldId, ${field_reference_name});
+ (*env)->DeleteLocalRef(env, ${field_reference_name});
+ }
+""")
+
+
+def _generate_c2j_primitive_type_array_no_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ return _C2J_PRIMITIVE_TYPE_ARRAY_NO_SWAP_TEMPLATE.substitute(
+ field_reference_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_type=field_type.jni_type,
+ base_type=field_type.base_type.jni_accessor,
+ field_length=_generate_array_length(field, struct_ref_name),
+ jni_base_type=field_type.base_type.jni_type,
+ object_ref_name=object_ref_name,
+ struct_ref_name=struct_ref_name,
+ c_name=field.name
+ )
+
+_C2J_PRIMITIVE_TYPE_ARRAY_NO_SWAP_TEMPLATE = Template("""
+ jfieldID ${field_reference_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${field_reference_name}", "${jni_signature}");
+ ${jni_type} ${field_reference_name} = (*env)->New${base_type}Array(env, ${field_length});
+ (*env)->Set${base_type}ArrayRegion(env, ${field_reference_name}, 0, ${field_length}, (const ${jni_base_type}*)${struct_ref_name}->${c_name});
+ (*env)->SetObjectField(env, ${object_ref_name}, ${field_reference_name}FieldId, ${field_reference_name});
+ (*env)->DeleteLocalRef(env, ${field_reference_name});
+""")
+
+
+def _generate_array_length(field, struct_ref_name):
+ if field.array_len_field:
+ len_field = field.array_len_field
+ if len_field.type.is_swap_needed:
+ return "%s(%s->%s)" % (len_field.type.host_to_net_function, struct_ref_name, len_field.name)
+ else:
+ return "%s->%s" % (struct_ref_name, len_field.name)
+ return field.array_len
+
+
+def _generate_c2j_scalar_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ if field_type.is_swap_needed:
+ # TODO(VPP-1186): move the logic to JNI generators
+ if isinstance(field_type, (Class, Union)):
+ return _generate_c2j_object_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+ elif isinstance(field_type, Enum):
+ return _generate_c2j_enum_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+ else:
+ return _generate_c2j_primitive_type_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+ else:
+ return _generate_c2j_primitive_type_no_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+
+
+def _generate_c2j_object_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ return _C2J_OBJECT_SWAP_TEMPLATE.substitute(
+ java_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_name=field_type.jni_name,
+ jni_accessor=field_type.jni_accessor,
+ object_ref_name=object_ref_name,
+ struct_ref_name=struct_ref_name,
+ net_to_host_function=field_type.net_to_host_function,
+ c_name=field.name)
+
+_C2J_OBJECT_SWAP_TEMPLATE = Template("""
+ jfieldID ${java_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${java_name}", "${jni_signature}");
+ jclass ${java_name}Class = (*env)->FindClass(env, "${jni_name}");
+ jmethodID ${java_name}Constructor = (*env)->GetMethodID(env, ${java_name}Class, "<init>", "()V");
+ jobject ${java_name} = (*env)->NewObject(env, ${java_name}Class, ${java_name}Constructor);
+ ${net_to_host_function}(env, &(${struct_ref_name}->${c_name}), ${java_name});
+ (*env)->Set${jni_accessor}Field(env, ${object_ref_name}, ${java_name}FieldId, ${java_name});
+ (*env)->DeleteLocalRef(env, ${java_name});
+""")
+
+
+def _generate_c2j_enum_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ return _C2J_ENUM_SWAP_TEMPLATE.substitute(
+ java_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_signature_enum_value=field_type.value.type.jni_signature,
+ jni_name=field_type.jni_name,
+ jni_accessor=field_type.jni_accessor,
+ object_ref_name=object_ref_name,
+ struct_ref_name=struct_ref_name,
+ net_to_host_function=field_type.net_to_host_function,
+ c_name=field.name)
+
+_C2J_ENUM_SWAP_TEMPLATE = Template("""
+ jfieldID ${java_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${java_name}", "${jni_signature}");
+ jclass ${java_name}Class = (*env)->FindClass(env, "${jni_name}");
+ jmethodID ${java_name}Constructor = (*env)->GetStaticMethodID(env, ${java_name}Class, "forValue", "(${jni_signature_enum_value})${jni_signature}");
+ jobject ${java_name} = (*env)->CallStaticObjectMethod(env, ${java_name}Class, ${java_name}Constructor, ${net_to_host_function}(${struct_ref_name}->${c_name}));
+ (*env)->SetObjectField(env, ${object_ref_name}, ${java_name}FieldId, ${java_name});
+ (*env)->DeleteLocalRef(env, ${java_name});
+""")
+
+
+def _generate_c2j_primitive_type_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ return _C2J_PRIMITIVE_TYPE_SWAP_TEMPLATE.substitute(
+ java_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_accessor=field_type.jni_accessor,
+ object_ref_name=object_ref_name,
+ net_to_host_function=field_type.net_to_host_function,
+ struct_ref_name=struct_ref_name,
+ c_name=field.name
+ )
+
+_C2J_PRIMITIVE_TYPE_SWAP_TEMPLATE = Template("""
+ jfieldID ${java_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${java_name}", "${jni_signature}");
+ (*env)->Set${jni_accessor}Field(env, ${object_ref_name}, ${java_name}FieldId, ${net_to_host_function}(${struct_ref_name}->${c_name}));
+""")
+
+
+def _generate_c2j_primitive_type_no_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ return _C2J_PRIMITIVE_TYPE_NO_SWAP_TEMPLATE.substitute(
+ java_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_accessor=field_type.jni_accessor,
+ object_ref_name=object_ref_name,
+ struct_ref_name=struct_ref_name,
+ c_name=field.name
+ )
+
+_C2J_PRIMITIVE_TYPE_NO_SWAP_TEMPLATE = Template("""
+ jfieldID ${java_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${java_name}", "${jni_signature}");
+ (*env)->Set${jni_accessor}Field(env, ${object_ref_name}, ${java_name}FieldId, ${struct_ref_name}->${c_name});
+""")
diff --git a/extras/japi/java/jvpp/gen/jvppgen/jni_gen.py b/extras/japi/java/jvpp/gen/jvppgen/jni_gen.py
new file mode 100755
index 00000000000..ad6c2614062
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/jni_gen.py
@@ -0,0 +1,160 @@
+#!/usr/bin/env python2
+#
+# 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:
+#
+# 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.
+#
+from string import Template
+
+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
+
+
+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
+
+ 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)))
+
+_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
+
+$api_verification
+
+// Type handlers
+$type_handlers
+
+// JNI bindings
+$jni_implementations
+
+// Message handlers
+$msg_handlers
+
+$handler_registration
+""")
+
+
+def _generate_class_cache(plugin_name, messages):
+ references = []
+ for msg in messages:
+ if is_control_ping(msg) or is_control_ping_reply(msg):
+ # Skip control_ping managed by jvpp registry.
+ continue
+ references.append((
+ msg.java_name_lower,
+ 'io/fd/vpp/jvpp/%s/dto/%s' % (plugin_name, msg.java_name_upper)
+ ))
+
+ references.append(('callbackException', 'io/fd/vpp/jvpp/VppCallbackException'))
+
+ return _CLASS_CACHE_TEMPLATE.substitute(
+ class_references=_generate_class_references(references),
+ create_references=_generate_create_references(references),
+ delete_references=_generate_delete_references(references)
+ )
+
+_CLASS_CACHE_TEMPLATE = Template("""
+// JAVA class reference cache
+$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
+""")
+
+
+def _generate_handler_registration(messages):
+ """
+ Generates msg handler registration for all messages except for dumps and requests.
+ :param messages: collection of VPP API messages.
+ """
+ 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
+""")
diff --git a/extras/japi/java/jvpp/gen/jvppgen/jni_impl_gen.py b/extras/japi/java/jvpp/gen/jvppgen/jni_impl_gen.py
new file mode 100755
index 00000000000..bf7523670a4
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/jni_impl_gen.py
@@ -0,0 +1,115 @@
+#!/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.
+#
+from string import Template
+
+from jni_common_gen import generate_j2c_identifiers, generate_j2c_swap
+from jvpp_model import is_dump, is_request, is_control_ping, is_control_ping_reply
+
+
+def generate_jni_impl(model):
+ """
+ Generates JNI bindings for sending dump and request messages.
+ :param model: meta-model of VPP API used for jVPP generation.
+ """
+ jni_impl = []
+ for msg in model.messages:
+ if is_control_ping(msg) or is_control_ping_reply(msg):
+ # Skip control ping managed by jvpp registry.
+ continue
+ if not (is_dump(msg) or is_request(msg)):
+ continue
+ arguments = ""
+ request_class = ""
+ jni_identifiers = ""
+ msg_initialization = ""
+
+ if msg.has_fields:
+ arguments = ", jobject request"
+ request_class = _REQUEST_CLASS_TEMPLATE.substitute(
+ plugin_name=model.plugin_name,
+ java_dto_name=msg.java_name_upper
+ )
+ jni_identifiers = generate_j2c_identifiers(msg, class_ref_name="requestClass", object_ref_name="request")
+ msg_initialization = generate_j2c_swap(msg, struct_ref_name="mp")
+
+ jni_impl.append(_JNI_IMPL_TEMPLATE.substitute(
+ c_name=msg.name,
+ json_filename=model.json_api_files,
+ json_definition=msg.doc,
+ plugin_name=model.plugin_name,
+ plugin_java_name=model.plugin_java_name,
+ java_method_name=msg.java_name_lower,
+ arguments=arguments,
+ request_class=request_class,
+ jni_identifiers=jni_identifiers,
+ msg_size=_generate_msg_size(msg),
+ crc=msg.crc,
+ msg_initialization=msg_initialization
+ ))
+ return "".join(jni_impl)
+
+
+_JNI_IMPL_TEMPLATE = Template("""
+/**
+ * JNI binding for sending ${c_name} message.
+ * Generated based on $json_filename:
+$json_definition
+ */
+JNIEXPORT jint JNICALL Java_io_fd_vpp_jvpp_${plugin_name}_JVpp${plugin_java_name}Impl_${java_method_name}0
+(JNIEnv * env, jclass clazz${arguments}) {
+ ${plugin_name}_main_t *plugin_main = &${plugin_name}_main;
+ vl_api_${c_name}_t * mp;
+ u32 my_context_id = vppjni_get_context_id (&jvpp_main);
+$request_class
+$jni_identifiers
+
+ // create message:
+ const size_t _size = ${msg_size};
+ mp = vl_msg_api_alloc(_size);
+ memset (mp, 0, _size);
+ mp->_vl_msg_id = ntohs (get_message_id(env, "${c_name}_${crc}"));
+ mp->client_index = plugin_main->my_client_index;
+ mp->context = clib_host_to_net_u32 (my_context_id);
+
+$msg_initialization
+
+ // send message:
+ if (CLIB_DEBUG > 1)
+ clib_warning ("Sending ${c_name} message");
+ vl_msg_api_send_shmem (plugin_main->vl_input_queue, (u8 *)&mp);
+ if ((*env)->ExceptionCheck(env)) {
+ return JNI_ERR;
+ }
+ return my_context_id;
+}""")
+
+# TODO: cache method and field identifiers to achieve better performance
+# https://jira.fd.io/browse/HONEYCOMB-42
+_REQUEST_CLASS_TEMPLATE = Template(""" jclass requestClass = (*env)->FindClass(env, "io/fd/vpp/jvpp/${plugin_name}/dto/${java_dto_name}");
+""")
+
+
+def _generate_msg_size(msg):
+ msg_size = "sizeof(*mp)"
+ _size_components = []
+ for field in msg.fields:
+ # Ignore ZLAs for simplicity (to support them we need to call JNI functions to check actual size)
+ if field.array_len_field:
+ _size_components += " + %s*sizeof(%s)" % (field.array_len_field.java_name, field.type.base_type.vpp_name)
+ # FIXME(VPP-586): for proper nested structures support, we need generate functions computing type sizes
+ # and use it instead of sizeof
+
+ return msg_size + "".join(_size_components)
diff --git a/extras/japi/java/jvpp/gen/jvppgen/jni_msg_handlers_gen.py b/extras/japi/java/jvpp/gen/jvppgen/jni_msg_handlers_gen.py
new file mode 100755
index 00000000000..8f6410f1af2
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/jni_msg_handlers_gen.py
@@ -0,0 +1,105 @@
+#!/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.
+#
+from string import Template
+
+from jni_common_gen import generate_c2j_swap
+from jvpp_model import is_dump, is_request, is_control_ping, is_control_ping_reply, is_retval
+
+
+def generate_jni_handlers(model):
+ """
+ Generates msg handlers for all messages except for dumps and requests (handled by vpp, not client).
+ :param model: meta-model of VPP API used for jVPP generation.
+ """
+ jni_impl = []
+ for msg in model.messages:
+ msg_name = msg.name
+ 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
+
+ jni_impl.append(_MSG_HANDLER_TEMPLATE.substitute(
+ c_name=msg_name,
+ json_filename=model.json_api_files,
+ json_definition=msg.doc,
+ plugin_name=model.plugin_name,
+ err_handler=_generate_error_handler(msg),
+ class_ref_name=msg.java_name_lower,
+ dto_name=msg.java_name_upper,
+ dto_setters=generate_c2j_swap(msg, object_ref_name="dto", struct_ref_name="mp")
+ ))
+ return "".join(jni_impl)
+
+_MSG_HANDLER_TEMPLATE = Template("""
+/**
+ * Handler for ${c_name} message.
+ * Generated based on $json_filename:
+$json_definition
+ */
+static void vl_api_${c_name}_t_handler (vl_api_${c_name}_t * mp)
+{
+ ${plugin_name}_main_t *plugin_main = &${plugin_name}_main;
+ JNIEnv *env = jvpp_main.jenv;
+ jthrowable exc;
+$err_handler
+
+ if (CLIB_DEBUG > 1)
+ clib_warning ("Received ${c_name} event message");
+
+ jmethodID constructor = (*env)->GetMethodID(env, ${class_ref_name}Class, "<init>", "()V");
+
+ // User does not have to provide callbacks for all VPP messages.
+ // We are ignoring messages that are not supported by user.
+ (*env)->ExceptionClear(env); // just in case exception occurred in different place and was not properly cleared
+ jmethodID callbackMethod = (*env)->GetMethodID(env, plugin_main->callbackClass, "on${dto_name}", "(Lio/fd/vpp/jvpp/${plugin_name}/dto/${dto_name};)V");
+ exc = (*env)->ExceptionOccurred(env);
+ if (exc) {
+ clib_warning("Unable to extract on${dto_name} method reference from ${plugin_name} plugin's callbackClass. Ignoring message.\\n");
+ (*env)->ExceptionDescribe(env);
+ (*env)->ExceptionClear(env);
+ return;
+ }
+
+ jobject dto = (*env)->NewObject(env, ${class_ref_name}Class, constructor);
+$dto_setters
+
+ (*env)->CallVoidMethod(env, plugin_main->callbackObject, callbackMethod, dto);
+ // free DTO as per http://stackoverflow.com/questions/1340938/memory-leak-when-calling-java-code-from-c-using-jni
+ (*env)->DeleteLocalRef(env, dto);
+}""")
+
+
+def _generate_error_handler(msg):
+ err_handler = ""
+ for field in msg.fields:
+ if is_retval(field):
+ err_handler = _ERR_HANDLER_TEMPLATE.substitute(name=msg.name)
+ return err_handler
+
+# Code fragment for checking result of the operation before sending request reply.
+# Error checking is optional (some messages, e.g. detail messages do not have retval field).
+_ERR_HANDLER_TEMPLATE = Template("""
+ // for negative result don't send callback message but send error callback
+ if (mp->retval<0) {
+ call_on_error("${name}", mp->context, mp->retval, plugin_main->callbackClass, plugin_main->callbackObject, callbackExceptionClass);
+ return;
+ }
+ if (mp->retval == VNET_API_ERROR_IN_PROGRESS) {
+ clib_warning("Result in progress");
+ return;
+ }""")
diff --git a/extras/japi/java/jvpp/gen/jvppgen/jni_type_handlers_gen.py b/extras/japi/java/jvpp/gen/jvppgen/jni_type_handlers_gen.py
new file mode 100755
index 00000000000..a76aadf468c
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/jni_type_handlers_gen.py
@@ -0,0 +1,222 @@
+#!/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.
+#
+from string import Template
+
+from jni_common_gen import generate_j2c_swap, generate_j2c_field_swap, generate_j2c_identifiers, generate_c2j_swap
+from jvpp_model import Class, Enum, Union
+
+
+def generate_type_handlers(model, logger):
+ """
+ Generates host-to-net and net-to-host functions for all custom types defined in the VPP API
+ :param model: meta-model of VPP API used for jVPP generation.
+ :param logger: jVPP logger
+ """
+ type_handlers = []
+ for t in model.types:
+ #TODO(VPP-1186): move the logic to JNI generators
+ if isinstance(t, Class):
+ _generate_class(model, t, type_handlers)
+ elif isinstance(t, Enum):
+ _generate_enum(model, t, type_handlers)
+ elif isinstance(t, Union):
+ _generate_union(model, t, type_handlers)
+ else:
+ logger.debug("Skipping custom JNI type handler generation for %s", t)
+
+ return "\n".join(type_handlers)
+
+
+def _generate_class(model, t, type_handlers):
+ ref_name = t.java_name_lower
+ type_handlers.append(_TYPE_HOST_TO_NET_TEMPLATE.substitute(
+ c_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ type_reference_name=ref_name,
+ class_FQN=t.jni_name,
+ jni_identifiers=generate_j2c_identifiers(t, class_ref_name="%sClass" % ref_name, object_ref_name="_host"),
+ type_swap=generate_j2c_swap(t, struct_ref_name="_net")
+ ))
+ type_handlers.append(_TYPE_NET_TO_HOST_TEMPLATE.substitute(
+ c_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ type_reference_name=ref_name,
+ class_FQN=t.jni_name,
+ type_swap=generate_c2j_swap(t, object_ref_name="_host", struct_ref_name="_net")
+ ))
+
+_TYPE_HOST_TO_NET_TEMPLATE = Template("""
+/**
+ * Host to network byte order conversion for ${c_name} type.
+ * Generated based on $json_filename:
+$json_definition
+ */
+static inline void _host_to_net_${c_name}(JNIEnv * env, jobject _host, vl_api_${c_name}_t * _net)
+{
+ jclass ${type_reference_name}Class = (*env)->FindClass(env, "${class_FQN}");
+$jni_identifiers
+$type_swap
+}""")
+
+_TYPE_NET_TO_HOST_TEMPLATE = Template("""
+/**
+ * Network to host byte order conversion for ${c_name} type.
+ * Generated based on $json_filename:
+$json_definition
+ */
+static inline void _net_to_host_${c_name}(JNIEnv * env, vl_api_${c_name}_t * _net, jobject _host)
+{
+ jclass ${type_reference_name}Class = (*env)->FindClass(env, "${class_FQN}");
+$type_swap
+}""")
+
+
+def _generate_enum(model, t, type_handlers):
+ value_type = t.value.type
+ type_handlers.append(_ENUM_NET_TO_HOST_TEMPLATE.substitute(
+ c_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ class_FQN=t.jni_name,
+ jni_signature=value_type.jni_signature,
+ jni_type=value_type.jni_type,
+ jni_accessor=value_type.jni_accessor,
+ swap=_generate_scalar_host_to_net_swap(t.value)
+ ))
+
+ type_handlers.append(_ENUM_HOST_TO_NET_TEMPLATE.substitute(
+ c_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ class_FQN=t.jni_name,
+ jni_type=value_type.jni_type,
+ type_swap=_generate_scalar_net_to_host_swap(t.value)
+ ))
+
+_ENUM_NET_TO_HOST_TEMPLATE = Template("""
+/**
+ * Host to network byte order conversion for ${c_name} enum.
+ * Generated based on $json_filename:
+$json_definition
+ */
+static inline void _host_to_net_${c_name}(JNIEnv * env, jobject _host, vl_api_${c_name}_t * _net)
+{
+ jclass enumClass = (*env)->FindClass(env, "${class_FQN}");
+ jfieldID valueFieldId = (*env)->GetStaticFieldID(env, enumClass, "value", "${jni_signature}");
+ ${jni_type} value = (*env)->GetStatic${jni_accessor}Field(env, enumClass, valueFieldId);
+ ${swap};
+}""")
+
+_ENUM_HOST_TO_NET_TEMPLATE = Template("""
+/**
+ * Network to host byte order conversion for ${c_name} type.
+ * Generated based on $json_filename:
+$json_definition
+ */
+static inline ${jni_type} _net_to_host_${c_name}(vl_api_${c_name}_t _net)
+{
+ return (${jni_type}) $type_swap
+}""")
+
+
+def _generate_scalar_host_to_net_swap(field):
+ field_type = field.type
+ if field_type.is_swap_needed:
+ return field_type.get_host_to_net_function(field.java_name, "*_net")
+ else:
+ return "*_net = %s" % field.java_name
+
+
+def _generate_scalar_net_to_host_swap(field):
+ field_type = field.type
+ if field_type.is_swap_needed:
+ return "%s((%s) _net);" % (field_type.net_to_host_function, field_type.name)
+ else:
+ return "_net"
+
+
+def _generate_union(model, t, type_handlers):
+ type_handlers.append(_generate_union_host_to_net(model, t))
+ type_handlers.append(_generate_union_net_to_host(model, t))
+
+
+def _generate_union_host_to_net(model, t):
+ swap = []
+ for i, field in enumerate(t.fields):
+ field_type = field.type
+ swap.append(_UNION_FIELD_HOST_TO_NET_TEMPLATE.substitute(
+ field_index=i,
+ java_name=field.java_name,
+ jni_signature=field_type.jni_signature,
+ jni_type=field_type.jni_type,
+ jni_accessor=field_type.jni_accessor,
+ swap=generate_j2c_field_swap(field, struct_ref_name="_net")
+ ))
+
+ return _UNION_HOST_TO_NET_TEMPLATE.substitute(
+ c_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ class_FQN=t.jni_name,
+ swap="".join(swap)
+ )
+
+_UNION_FIELD_HOST_TO_NET_TEMPLATE = Template("""
+ if (_activeMember == ${field_index}) {
+ jfieldID fieldId = (*env)->GetFieldID(env, _class, "${java_name}", "${jni_signature}");
+ ${jni_type} ${java_name} = (*env)->Get${jni_accessor}Field(env, _host, fieldId);
+ ${swap}
+ }""")
+
+_UNION_HOST_TO_NET_TEMPLATE = Template("""
+/**
+ * Host to network byte order conversion for ${c_name} union.
+ * Generated based on $json_filename:
+$json_definition
+ */
+static inline void _host_to_net_${c_name}(JNIEnv * env, jobject _host, vl_api_${c_name}_t * _net)
+{
+ jclass _class = (*env)->FindClass(env, "${class_FQN}");
+
+ jfieldID _activeMemberFieldId = (*env)->GetFieldID(env, _class, "_activeMember", "I");
+ jint _activeMember = (*env)->GetIntField(env, _host, _activeMemberFieldId);
+$swap
+}""")
+
+
+def _generate_union_net_to_host(model, t):
+ return _UNION_NET_TO_HOST_TEMPLATE.substitute(
+ c_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ type_reference_name=t.java_name_lower,
+ class_FQN=t.jni_name,
+ swap=generate_c2j_swap(t, object_ref_name="_host", struct_ref_name="_net")
+ )
+
+_UNION_NET_TO_HOST_TEMPLATE = Template("""
+/**
+ * Network to host byte order conversion for ${c_name} union.
+ * Generated based on $json_filename:
+$json_definition
+ */
+static inline void _net_to_host_${c_name}(JNIEnv * env, vl_api_${c_name}_t * _net, jobject _host)
+{
+ jclass ${type_reference_name}Class = (*env)->FindClass(env, "${class_FQN}");
+$swap
+}""")
diff --git a/extras/japi/java/jvpp/gen/jvppgen/jvpp_callback_facade_gen.py b/extras/japi/java/jvpp/gen/jvppgen/jvpp_callback_facade_gen.py
new file mode 100644
index 00000000000..c5634de2e48
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/jvpp_callback_facade_gen.py
@@ -0,0 +1,289 @@
+#!/usr/bin/env python2
+#
+# 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:
+#
+# 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.
+from string import Template
+
+from jvpp_model import is_control_ping, is_dump, is_request, is_event, is_control_ping_reply
+
+
+def generate_callback_facade(work_dir, model, logger):
+ """ Generates callback facade """
+ logger.debug("Generating JVpp callback facade for %s" % model.json_api_files)
+ _generate_ifc(work_dir, model),
+ _generate_impl(work_dir, model)
+ _generate_callback(work_dir, model)
+
+
+def _generate_ifc(work_dir, model):
+ with open("%s/CallbackJVpp%s.java" % (work_dir, model.plugin_java_name), "w") as f:
+ f.write(_IFC_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ json_filename=model.json_api_files,
+ plugin_name=model.plugin_java_name,
+ methods=_generate_ifc_methods(model)
+ ))
+
+_IFC_TEMPLATE = Template("""
+package $plugin_package.callfacade;
+
+/**
+ * <p>Callback Java API representation of $plugin_package plugin.
+ * <br>It was generated by jvpp_callback_facade_gen.py based on $json_filename.
+ */
+public interface CallbackJVpp${plugin_name} extends io.fd.vpp.jvpp.notification.EventRegistryProvider, java.lang.AutoCloseable {
+
+ // TODO add send
+
+$methods
+}
+""")
+
+
+def _generate_ifc_methods(model):
+ plugin_package = model.plugin_package
+ methods = []
+ for msg in model.messages:
+ if is_control_ping(msg):
+ # Skip control ping managed by jvpp registry.
+ continue
+ if not (is_dump(msg) or is_request(msg)):
+ # Skip replies and messages that do not not have replies (e.g events/counters).
+ continue
+ template = _IFC_NO_ARG_METHOD_TEMPLATE
+ if msg.has_fields:
+ template = _IFC_METHOD_TEMPLATE
+ methods.append(template.substitute(
+ name=msg.java_name_lower,
+ plugin_package=plugin_package,
+ request=msg.java_name_upper,
+ reply=msg.reply_java
+ ))
+ return "\n".join(methods)
+
+_IFC_NO_ARG_METHOD_TEMPLATE = Template(
+ """ void $name($plugin_package.callback.${reply}Callback callback) throws io.fd.vpp.jvpp.VppInvocationException;""")
+
+_IFC_METHOD_TEMPLATE = Template(
+ """ void $name($plugin_package.dto.$request request, $plugin_package.callback.${reply}Callback callback) throws io.fd.vpp.jvpp.VppInvocationException;""")
+
+
+def _generate_impl(work_dir, model):
+ with open("%s/CallbackJVpp%sFacade.java" % (work_dir, model.plugin_java_name), "w") as f:
+ f.write(_IMPL_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ json_filename=model.json_api_files,
+ plugin_name=model.plugin_java_name,
+ methods=_generate_impl_methods(model)
+ ))
+
+_IMPL_TEMPLATE = Template("""
+package $plugin_package.callfacade;
+
+/**
+ * <p>Default implementation of Callback${plugin_name}JVpp interface.
+ * <br>It was generated by jvpp_callback_facade_gen.py based on $json_filename.
+ */
+public final class CallbackJVpp${plugin_name}Facade implements CallbackJVpp${plugin_name} {
+
+ private final $plugin_package.JVpp${plugin_name} jvpp;
+ private final java.util.Map<Integer, io.fd.vpp.jvpp.callback.JVppCallback> callbacks;
+ private final $plugin_package.notification.${plugin_name}EventRegistryImpl eventRegistry = new $plugin_package.notification.${plugin_name}EventRegistryImpl();
+ /**
+ * <p>Create CallbackJVpp${plugin_name}Facade object for provided JVpp instance.
+ * Constructor internally creates CallbackJVppFacadeCallback class for processing callbacks
+ * and then connects to provided JVpp instance
+ *
+ * @param jvpp provided io.fd.vpp.jvpp.JVpp instance
+ *
+ * @throws java.io.IOException in case instance cannot connect to JVPP
+ */
+ public CallbackJVpp${plugin_name}Facade(final io.fd.vpp.jvpp.JVppRegistry registry, final $plugin_package.JVpp${plugin_name} jvpp) throws java.io.IOException {
+ this.jvpp = java.util.Objects.requireNonNull(jvpp,"jvpp is null");
+ this.callbacks = new java.util.HashMap<>();
+ java.util.Objects.requireNonNull(registry, "JVppRegistry should not be null");
+ registry.register(jvpp, new CallbackJVpp${plugin_name}FacadeCallback(this.callbacks, eventRegistry));
+ }
+
+ @Override
+ public $plugin_package.notification.${plugin_name}EventRegistry getEventRegistry() {
+ return eventRegistry;
+ }
+
+ @Override
+ public void close() throws Exception {
+ jvpp.close();
+ }
+
+ // TODO add send()
+
+$methods
+}
+""")
+
+
+def _generate_impl_methods(model):
+ plugin_package = model.plugin_package
+ methods = []
+ for msg in model.messages:
+ if is_control_ping(msg):
+ # Skip control ping managed by jvpp registry.
+ continue
+ if not (is_dump(msg) or is_request(msg)):
+ # Skip replies and messages that do not not have replies (e.g events/counters).
+ continue
+ template = _IMPL_NO_ARG_METHOD_TEMPLATE
+ if msg.has_fields:
+ template = _IMPL_METHOD_TEMPLATE
+ methods.append(template.substitute(
+ name=msg.java_name_lower,
+ plugin_package=plugin_package,
+ request=msg.java_name_upper,
+ reply=msg.reply_java
+ ))
+ return "\n".join(methods)
+
+_IMPL_NO_ARG_METHOD_TEMPLATE = Template(
+ """ public final void $name($plugin_package.callback.${reply}Callback callback) throws io.fd.vpp.jvpp.VppInvocationException {
+ synchronized (callbacks) {
+ callbacks.put(jvpp.$name(), callback);
+ }
+ }
+""")
+
+_IMPL_METHOD_TEMPLATE = Template(""" public final void $name($plugin_package.dto.$request request, $plugin_package.callback.${reply}Callback callback) throws io.fd.vpp.jvpp.VppInvocationException {
+ synchronized (callbacks) {
+ callbacks.put(jvpp.$name(request), callback);
+ }
+ }
+""")
+
+
+def _generate_callback(work_dir, model):
+ with open("%s/CallbackJVpp%sFacadeCallback.java" % (work_dir, model.plugin_java_name), "w") as f:
+ f.write(_CALLBACK_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ json_filename=model.json_api_files,
+ plugin_name=model.plugin_java_name,
+ methods=_generate_callback_methods(model)
+ ))
+
+_CALLBACK_TEMPLATE = Template("""
+package $plugin_package.callfacade;
+
+/**
+ * <p>Implementation of JVppGlobalCallback interface for Java Callback API.
+ * <br>It was generated by jvpp_callback_facade_gen.py based on $json_filename.
+ */
+public final class CallbackJVpp${plugin_name}FacadeCallback implements $plugin_package.callback.JVpp${plugin_name}GlobalCallback {
+
+ private final java.util.Map<Integer, io.fd.vpp.jvpp.callback.JVppCallback> requests;
+ private final $plugin_package.notification.Global${plugin_name}EventCallback eventCallback;
+ private static final java.util.logging.Logger LOG = java.util.logging.Logger.getLogger(CallbackJVpp${plugin_name}FacadeCallback.class.getName());
+
+ public CallbackJVpp${plugin_name}FacadeCallback(final java.util.Map<Integer, io.fd.vpp.jvpp.callback.JVppCallback> requestMap,
+ final $plugin_package.notification.Global${plugin_name}EventCallback eventCallback) {
+ this.requests = requestMap;
+ this.eventCallback = eventCallback;
+ }
+
+ @Override
+ public void onError(io.fd.vpp.jvpp.VppCallbackException reply) {
+
+ io.fd.vpp.jvpp.callback.JVppCallback failedCall;
+ synchronized(requests) {
+ failedCall = requests.remove(reply.getCtxId());
+ }
+
+ if(failedCall != null) {
+ try {
+ failedCall.onError(reply);
+ } catch(RuntimeException ex) {
+ ex.addSuppressed(reply);
+ LOG.log(java.util.logging.Level.WARNING, String.format("Callback: %s failed while handling exception: %s", failedCall, reply), ex);
+ }
+ }
+ }
+
+ @Override
+ @SuppressWarnings("unchecked")
+ public void onControlPingReply(final io.fd.vpp.jvpp.dto.ControlPingReply reply) {
+
+ io.fd.vpp.jvpp.callback.ControlPingCallback callback;
+ final int replyId = reply.context;
+ synchronized(requests) {
+ callback = (io.fd.vpp.jvpp.callback.ControlPingCallback) requests.remove(replyId);
+ }
+
+ if(callback != null) {
+ callback.onControlPingReply(reply);
+ }
+ }
+
+$methods
+}
+""")
+
+
+def _generate_callback_methods(model):
+ plugin_package = model.plugin_package
+ methods = []
+ for msg in model.messages:
+ if is_dump(msg) or is_request(msg):
+ continue
+ if is_control_ping_reply(msg):
+ # Skip control ping managed by jvpp registry.
+ continue
+
+ # Generate callbacks for all messages except for dumps and requests (handled by vpp, not client).
+ template = _CALLBACK_METHOD_TEMPLATE
+ if is_event(msg):
+ template = _CALLBACK_EVENT_METHOD_TEMPLATE
+ msg_name = msg.java_name_upper
+ methods.append(template.substitute(
+ message=msg_name,
+ callback="%sCallback" % msg_name,
+ plugin_package=plugin_package
+ ))
+ return "\n".join(methods)
+
+_CALLBACK_METHOD_TEMPLATE = Template("""
+ @Override
+ @SuppressWarnings("unchecked")
+ public void on${message}(final $plugin_package.dto.${message} reply) {
+
+ $plugin_package.callback.$callback callback;
+ final int replyId = reply.context;
+ if (LOG.isLoggable(java.util.logging.Level.FINE)) {
+ LOG.fine(String.format("Received ${message} event message: %s", reply));
+ }
+ synchronized(requests) {
+ callback = ($plugin_package.callback.$callback) requests.remove(replyId);
+ }
+
+ if(callback != null) {
+ callback.on${message}(reply);
+ }
+ }
+""")
+
+_CALLBACK_EVENT_METHOD_TEMPLATE = Template("""
+ @Override
+ @SuppressWarnings("unchecked")
+ public void on${message}($plugin_package.dto.${message} notification) {
+ if (LOG.isLoggable(java.util.logging.Level.FINE)) {
+ LOG.fine(String.format("Received ${message} event message: %s", notification));
+ }
+ eventCallback.on${message}(notification);
+ }
+""")
diff --git a/extras/japi/java/jvpp/gen/jvppgen/jvpp_common_gen.py b/extras/japi/java/jvpp/gen/jvppgen/jvpp_common_gen.py
new file mode 100755
index 00000000000..83226ea78ac
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/jvpp_common_gen.py
@@ -0,0 +1,114 @@
+#!/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.
+from string import Template
+
+from jvpp_model import is_array
+
+
+def generate_fields(fields, access_modifier="public"):
+ return "\n".join(_FIELD_TEMPLATE
+ .substitute(access_modifier=access_modifier, type=f.type.java_name_fqn, name=f.java_name)
+ for f in fields)
+
+_FIELD_TEMPLATE = Template(""" ${access_modifier} ${type} ${name};""")
+
+
+def generate_hash_code(fields):
+ if len(fields) == 1 and is_array(fields[0]):
+ return _HASH_CODE_SINGLE_ARRAY_TEMPLATE.substitute(array_field=fields[0].java_name)
+ return _HASH_CODE_TEMPLATE.substitute(fields=", ".join(f.java_name for f in fields))
+
+_HASH_CODE_TEMPLATE = Template("""
+ @Override
+ @io.fd.vpp.jvpp.coverity.SuppressFBWarnings("UWF_UNWRITTEN_PUBLIC_OR_PROTECTED_FIELD")
+ public int hashCode() {
+ return java.util.Objects.hash($fields);
+ }""")
+
+_HASH_CODE_SINGLE_ARRAY_TEMPLATE = Template("""
+ @Override
+ @io.fd.vpp.jvpp.coverity.SuppressFBWarnings("UWF_UNWRITTEN_PUBLIC_OR_PROTECTED_FIELD")
+ public int hashCode() {
+ return java.util.Arrays.hashCode($array_field);
+ }""")
+
+
+def generate_equals(class_name, fields):
+ comparisons = []
+ for f in fields:
+ if is_array(f):
+ comparisons.append(_EQUALS_ARRAY_FIELD_TEMPLATE.substitute(field_name=f.java_name))
+ else:
+ comparisons.append(_EQUALS_FIELD_TEMPLATE.substitute(field_name=f.java_name))
+
+ if comparisons:
+ comparisons.insert(0, _EQUALS_OTHER_TEMPLATE.substitute(cls_name=class_name))
+ return _EQUALS_TEMPLATE.substitute(comparisons="\n".join(comparisons))
+
+_EQUALS_TEMPLATE = Template("""
+ @Override
+ public boolean equals(final Object o) {
+ if (this == o) {
+ return true;
+ }
+ if (o == null || getClass() != o.getClass()) {
+ return false;
+ }
+$comparisons
+
+ return true;
+ }""")
+
+_EQUALS_OTHER_TEMPLATE = Template("""
+ final $cls_name other = ($cls_name) o;
+""")
+
+_EQUALS_FIELD_TEMPLATE = Template(""" if (!java.util.Objects.equals(this.$field_name, other.$field_name)) {
+ return false;
+ }""")
+
+_EQUALS_ARRAY_FIELD_TEMPLATE = Template(""" if (!java.util.Arrays.equals(this.$field_name, other.$field_name)) {
+ return false;
+ }""")
+
+
+def generate_to_string(class_name, fields):
+ to_string = []
+ for f in fields:
+ if is_array(f):
+ to_string.append(_TO_STRING_ARRAY_FIELD_TEMPLATE.substitute(field_name=f.java_name))
+ else:
+ to_string.append(_TO_STRING_FIELD_TEMPLATE.substitute(field_name=f.java_name))
+
+ to_string_fields = " \"}\";"
+ if to_string:
+ to_string_fields = " + \", \" +\n".join(to_string) + " + \"}\";"
+
+ return _TO_STRING_TEMPLATE.substitute(
+ class_name=class_name,
+ to_string_fields=to_string_fields
+ )
+
+_TO_STRING_TEMPLATE = Template("""
+ @Override
+ public String toString() {
+ return "$class_name{" +
+$to_string_fields
+ }""")
+
+_TO_STRING_FIELD_TEMPLATE = Template(""" \"$field_name=\" + $field_name""")
+
+_TO_STRING_ARRAY_FIELD_TEMPLATE = Template(
+ """ \"$field_name=\" + java.util.Arrays.toString($field_name)""")
diff --git a/extras/japi/java/jvpp/gen/jvppgen/jvpp_future_facade_gen.py b/extras/japi/java/jvpp/gen/jvppgen/jvpp_future_facade_gen.py
new file mode 100644
index 00000000000..47a9985144d
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/jvpp_future_facade_gen.py
@@ -0,0 +1,338 @@
+#!/usr/bin/env python2
+#
+# 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:
+#
+# 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.
+from string import Template
+
+from jvpp_model import is_control_ping, is_control_ping_reply, is_dump, is_request, is_details, is_reply, is_event
+
+
+def generate_future_facade(work_dir, model, logger):
+ logger.debug("Generating JVpp future facade for %s" % model.json_api_files)
+ _generate_future_jvpp(work_dir, model),
+ _generate_future_jvpp_facade(work_dir, model)
+ _generate_future_jvpp_callback(work_dir, model)
+
+
+def _generate_future_jvpp(work_dir, model):
+ with open("%s/FutureJVpp%s.java" % (work_dir, model.plugin_java_name), "w") as f:
+ f.write(_FUTURE_JVPP_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ json_filename=model.json_api_files,
+ plugin_name=model.plugin_java_name,
+ methods=_generate_future_jvpp_methods(model)
+ ))
+
+_FUTURE_JVPP_TEMPLATE = Template('''
+package $plugin_package.future;
+
+/**
+ * <p>Async facade extension adding specific methods for each request invocation
+ * <br>It was generated by jvpp_future_facade_gen.py based on $json_filename.
+ */
+public interface FutureJVpp${plugin_name} extends io.fd.vpp.jvpp.future.FutureJVppInvoker {
+$methods
+
+ @Override
+ public $plugin_package.notification.${plugin_name}EventRegistry getEventRegistry();
+
+}
+''')
+
+
+def _generate_future_jvpp_methods(model):
+ methods = []
+ for msg in model.messages:
+ if is_control_ping(msg) or is_control_ping_reply(msg):
+ # Skip control_ping managed by jvpp registry.
+ continue
+ reply_name = None
+ if is_request(msg):
+ reply_name = msg.reply_java
+ elif is_dump(msg):
+ # use reply dump wrappers
+ reply_name = "%sReplyDump" % msg.reply_java
+ else:
+ continue
+
+ methods.append(_FUTURE_JVPP_METHOD_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ method_name=msg.java_name_lower,
+ reply_name=reply_name,
+ request_name=msg.java_name_upper
+ ))
+ return "".join(methods)
+
+_FUTURE_JVPP_METHOD_TEMPLATE = Template('''
+ java.util.concurrent.CompletionStage<${plugin_package}.dto.${reply_name}> ${method_name}(${plugin_package}.dto.${request_name} request);
+''')
+
+
+def _generate_future_jvpp_facade(work_dir, model):
+ with open("%s/FutureJVpp%sFacade.java" % (work_dir, model.plugin_java_name), "w") as f:
+ f.write(_FUTURE_JVPP_FACADE_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ json_filename=model.json_api_files,
+ plugin_name=model.plugin_java_name,
+ methods=_generate_future_jvpp_facade_methods(model)
+ ))
+
+_FUTURE_JVPP_FACADE_TEMPLATE = Template('''
+package $plugin_package.future;
+
+/**
+ * <p>Implementation of FutureJVpp based on AbstractFutureJVppInvoker
+ * <br>It was generated by jvpp_future_facade_gen.py based on $json_filename.
+ */
+public class FutureJVpp${plugin_name}Facade extends io.fd.vpp.jvpp.future.AbstractFutureJVppInvoker implements FutureJVpp${plugin_name} {
+
+ private final $plugin_package.notification.${plugin_name}EventRegistryImpl eventRegistry = new $plugin_package.notification.${plugin_name}EventRegistryImpl();
+
+ /**
+ * <p>Create FutureJVpp${plugin_name}Facade object for provided JVpp instance.
+ * Constructor internally creates FutureJVppFacadeCallback class for processing callbacks
+ * and then connects to provided JVpp instance
+ *
+ * @param jvpp provided io.fd.vpp.jvpp.JVpp instance
+ *
+ * @throws java.io.IOException in case instance cannot connect to JVPP
+ */
+ public FutureJVpp${plugin_name}Facade(final io.fd.vpp.jvpp.JVppRegistry registry, final io.fd.vpp.jvpp.JVpp jvpp) throws java.io.IOException {
+ super(jvpp, registry, new java.util.HashMap<>());
+ java.util.Objects.requireNonNull(registry, "JVppRegistry should not be null");
+ registry.register(jvpp, new FutureJVpp${plugin_name}FacadeCallback(getRequests(), eventRegistry));
+ }
+
+ @Override
+ public $plugin_package.notification.${plugin_name}EventRegistry getEventRegistry() {
+ return eventRegistry;
+ }
+
+$methods
+}
+''')
+
+
+def _generate_future_jvpp_facade_methods(model):
+ methods = []
+ for msg in model.messages:
+ if is_control_ping(msg) or is_control_ping_reply(msg):
+ # Skip control_ping managed by jvpp registry.
+ continue
+ template = None
+ if is_request(msg):
+ template = _FUTURE_JVPP_FACADE_REQUEST_TEMPLATE
+ elif is_dump(msg):
+ template = _FUTURE_JVPP_FACADE_DUMP_TEMPLATE
+ else:
+ continue
+
+ methods.append(template.substitute(
+ plugin_package=model.plugin_package,
+ method_name=msg.java_name_lower,
+ reply_name=msg.reply_java,
+ request_name=msg.java_name_upper
+ ))
+ return "".join(methods)
+
+_FUTURE_JVPP_FACADE_REQUEST_TEMPLATE = Template('''
+ @Override
+ public java.util.concurrent.CompletionStage<${plugin_package}.dto.${reply_name}> ${method_name}(${plugin_package}.dto.${request_name} request) {
+ return send(request);
+ }
+''')
+
+_FUTURE_JVPP_FACADE_DUMP_TEMPLATE = Template('''
+ @Override
+ public java.util.concurrent.CompletionStage<${plugin_package}.dto.${reply_name}ReplyDump> ${method_name}(${plugin_package}.dto.${request_name} request) {
+ return send(request, new ${plugin_package}.dto.${reply_name}ReplyDump());
+ }
+''')
+
+
+def _generate_future_jvpp_callback(work_dir, model):
+ with open("%s/FutureJVpp%sFacadeCallback.java" % (work_dir, model.plugin_java_name), "w") as f:
+ f.write(_FUTURE_JVPP_CALLBACK_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ json_filename=model.json_api_files,
+ plugin_name=model.plugin_java_name,
+ methods=_generate_future_jvpp_callback_methods(model)
+ ))
+
+_FUTURE_JVPP_CALLBACK_TEMPLATE = Template("""
+package $plugin_package.future;
+
+/**
+ * <p>Async facade callback setting values to future objects
+ * <br>It was generated by jvpp_future_facade_gen.py based on $json_filename.
+ */
+public final class FutureJVpp${plugin_name}FacadeCallback implements $plugin_package.callback.JVpp${plugin_name}GlobalCallback {
+
+ private final java.util.Map<java.lang.Integer, java.util.concurrent.CompletableFuture<? extends io.fd.vpp.jvpp.dto.JVppReply<?>>> requests;
+ private final $plugin_package.notification.Global${plugin_name}EventCallback notificationCallback;
+ private static final java.util.logging.Logger LOG = java.util.logging.Logger.getLogger(FutureJVpp${plugin_name}FacadeCallback.class.getName());
+
+ public FutureJVpp${plugin_name}FacadeCallback(
+ final java.util.Map<java.lang.Integer, java.util.concurrent.CompletableFuture<? extends io.fd.vpp.jvpp.dto.JVppReply<?>>> requestMap,
+ final $plugin_package.notification.Global${plugin_name}EventCallback notificationCallback) {
+ this.requests = requestMap;
+ this.notificationCallback = notificationCallback;
+ }
+
+ @Override
+ @SuppressWarnings("unchecked")
+ public void onError(io.fd.vpp.jvpp.VppCallbackException reply) {
+ final java.util.concurrent.CompletableFuture<io.fd.vpp.jvpp.dto.JVppReply<?>> completableFuture;
+
+ synchronized(requests) {
+ completableFuture = (java.util.concurrent.CompletableFuture<io.fd.vpp.jvpp.dto.JVppReply<?>>) requests.get(reply.getCtxId());
+ }
+
+ if(completableFuture != null) {
+ completableFuture.completeExceptionally(reply);
+
+ synchronized(requests) {
+ requests.remove(reply.getCtxId());
+ }
+ }
+ }
+
+ @Override
+ @SuppressWarnings("unchecked")
+ public void onControlPingReply(final io.fd.vpp.jvpp.dto.ControlPingReply reply) {
+ java.util.concurrent.CompletableFuture<io.fd.vpp.jvpp.dto.JVppReply<?>> completableFuture;
+
+ final int replyId = reply.context;
+ synchronized(requests) {
+ completableFuture = (java.util.concurrent.CompletableFuture<io.fd.vpp.jvpp.dto.JVppReply<?>>) requests.get(replyId);
+
+ if(completableFuture != null) {
+ // Finish dump call
+ if (completableFuture instanceof io.fd.vpp.jvpp.future.AbstractFutureJVppInvoker.CompletableDumpFuture) {
+ completableFuture.complete(((io.fd.vpp.jvpp.future.AbstractFutureJVppInvoker.CompletableDumpFuture) completableFuture).getReplyDump());
+ // Remove future mapped to dump call context id
+ requests.remove(((io.fd.vpp.jvpp.future.AbstractFutureJVppInvoker.CompletableDumpFuture) completableFuture).getContextId());
+ } else {
+ // reply to regular control ping, complete the future
+ completableFuture.complete(reply);
+ }
+ requests.remove(replyId);
+ } else {
+ // future not yet created by writer, create new future, complete it and put to map under ping id
+ completableFuture = new java.util.concurrent.CompletableFuture<>();
+ completableFuture.complete(reply);
+ requests.put(replyId, completableFuture);
+ }
+ }
+ }
+
+$methods
+}
+""")
+
+
+def _generate_future_jvpp_callback_methods(model):
+ methods = []
+ for msg in model.messages:
+ if is_control_ping(msg) or is_control_ping_reply(msg):
+ # Skip control_ping managed by jvpp registry.
+ continue
+ if is_dump(msg) or is_request(msg):
+ continue
+
+ # Generate callbacks for all messages except for dumps and requests (handled by vpp, not client).
+ template = None
+ request_dto = None
+ if is_details(msg):
+ template = _FUTURE_JVPP_FACADE_DETAILS_CALLBACK_TEMPLATE
+ request_dto = msg.request_java
+ elif is_reply(msg):
+ template = _FUTURE_JVPP_FACADE_REPLY_CALLBACK_TEMPLATE
+ request_dto = msg.request_java
+ elif is_event(msg):
+ template = _FUTURE_JVPP_FACADE_EVENT_CALLBACK_TEMPLATE
+ else:
+ raise TypeError("Unknown message type %s", msg)
+
+ methods.append(template.substitute(
+ plugin_package=model.plugin_package,
+ callback_dto=msg.java_name_upper,
+ request_dto=request_dto,
+ callback_dto_field=msg.java_name_lower,
+ ))
+ return "".join(methods)
+
+
+_FUTURE_JVPP_FACADE_DETAILS_CALLBACK_TEMPLATE = Template("""
+ @Override
+ @SuppressWarnings("unchecked")
+ public void on$callback_dto(final $plugin_package.dto.$callback_dto reply) {
+ io.fd.vpp.jvpp.future.AbstractFutureJVppInvoker.CompletableDumpFuture<$plugin_package.dto.${callback_dto}ReplyDump> completableFuture;
+ final int replyId = reply.context;
+ if (LOG.isLoggable(java.util.logging.Level.FINE)) {
+ LOG.fine(String.format("Received $callback_dto event message: %s", reply));
+ }
+ synchronized(requests) {
+ completableFuture = (io.fd.vpp.jvpp.future.AbstractFutureJVppInvoker.CompletableDumpFuture<$plugin_package.dto.${callback_dto}ReplyDump>) requests.get(replyId);
+
+ if(completableFuture == null) {
+ // reply received before writer created future,
+ // create new future, and put into map to notify sender that reply is already received,
+ // following details replies will add information to this future
+ completableFuture = new io.fd.vpp.jvpp.future.AbstractFutureJVppInvoker.CompletableDumpFuture<>(replyId,
+ new $plugin_package.dto.${callback_dto}ReplyDump());
+ requests.put(replyId, completableFuture);
+ }
+ completableFuture.getReplyDump().$callback_dto_field.add(reply);
+ }
+ }
+""")
+
+_FUTURE_JVPP_FACADE_REPLY_CALLBACK_TEMPLATE = Template("""
+ @Override
+ @SuppressWarnings("unchecked")
+ public void on$callback_dto(final $plugin_package.dto.$callback_dto reply) {
+ java.util.concurrent.CompletableFuture<io.fd.vpp.jvpp.dto.JVppReply<$plugin_package.dto.$request_dto>> completableFuture;
+ final int replyId = reply.context;
+ if (LOG.isLoggable(java.util.logging.Level.FINE)) {
+ LOG.fine(String.format("Received $callback_dto event message: %s", reply));
+ }
+ synchronized(requests) {
+ completableFuture =
+ (java.util.concurrent.CompletableFuture<io.fd.vpp.jvpp.dto.JVppReply<$plugin_package.dto.$request_dto>>) requests.get(replyId);
+
+ if(completableFuture != null) {
+ // received reply on request, complete future created by sender and remove it from map
+ completableFuture.complete(reply);
+ requests.remove(replyId);
+ } else {
+ // reply received before writer created future,
+ // create new future, complete it and put into map to
+ // notify sender that reply is already received
+ completableFuture = new java.util.concurrent.CompletableFuture<>();
+ completableFuture.complete(reply);
+ requests.put(replyId, completableFuture);
+ }
+ }
+ }
+""")
+
+_FUTURE_JVPP_FACADE_EVENT_CALLBACK_TEMPLATE = Template("""
+ @Override
+ public void on$callback_dto($plugin_package.dto.$callback_dto notification) {
+ if (LOG.isLoggable(java.util.logging.Level.FINE)) {
+ LOG.fine(String.format("Received $callback_dto event message: %s", notification));
+ }
+ notificationCallback.on$callback_dto(notification);
+ }
+""")
diff --git a/extras/japi/java/jvpp/gen/jvppgen/jvpp_ifc_gen.py b/extras/japi/java/jvpp/gen/jvppgen/jvpp_ifc_gen.py
new file mode 100755
index 00000000000..e2b2922ed20
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/jvpp_ifc_gen.py
@@ -0,0 +1,71 @@
+#!/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.
+#
+from string import Template
+
+from jvpp_model import is_request, is_dump, is_event
+
+
+def generate_java_ifc(work_dir, model, logger):
+ logger.debug("Generating JVpp interface for %s" % model.json_api_files)
+ messages = filter(_jvpp_ifc_filter, model.messages)
+ plugin_package = model.plugin_package
+ methods = []
+ for msg in messages:
+ if msg.has_fields:
+ methods.append(_JVPP_IFC_METHOD_TEMPLATE.substitute(
+ name=msg.java_name_lower,
+ plugin_package=plugin_package,
+ type=msg.java_name_upper))
+ else:
+ methods.append(_JVPP_IFC_NO_ARG_METHOD_TEMPLATE.substitute(name=msg.java_name_lower))
+
+ plugin_name = model.plugin_java_name
+ jvpp_interface = _JVPP_IFC_TEMPLATE.substitute(
+ plugin_package=plugin_package,
+ json_filename=model.json_api_files,
+ plugin_name=plugin_name,
+ methods="\n".join(methods)
+ )
+ with open("%s/JVpp%s.java" % (work_dir, plugin_name), "w") as f:
+ f.write(jvpp_interface)
+
+
+def _jvpp_ifc_filter(msg):
+ return is_request(msg) or is_dump(msg) or is_event(msg)
+
+
+_JVPP_IFC_METHOD_TEMPLATE = Template(
+ """ int $name($plugin_package.dto.$type request) throws io.fd.vpp.jvpp.VppInvocationException;""")
+
+_JVPP_IFC_NO_ARG_METHOD_TEMPLATE = Template(""" int $name() throws io.fd.vpp.jvpp.VppInvocationException;""")
+
+_JVPP_IFC_TEMPLATE = Template("""package $plugin_package;
+
+/**
+ * <p>Java representation of plugin's api file.
+ * <br>It was generated by jvpp_impl_gen.py based on $json_filename.
+ * <br>(python representation of api file generated by vppapigen)
+ */
+public interface JVpp${plugin_name} extends io.fd.vpp.jvpp.JVpp {
+ /**
+ * Generic dispatch method for sending requests to VPP
+ *
+ * @throws io.fd.vpp.jvpp.VppInvocationException if send request had failed
+ */
+ int send(io.fd.vpp.jvpp.dto.JVppRequest request) throws io.fd.vpp.jvpp.VppInvocationException;
+$methods
+}
+""")
diff --git a/extras/japi/java/jvpp/gen/jvppgen/jvpp_impl_gen.py b/extras/japi/java/jvpp/gen/jvppgen/jvpp_impl_gen.py
new file mode 100755
index 00000000000..aff8d7fc99c
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/jvpp_impl_gen.py
@@ -0,0 +1,173 @@
+#!/usr/bin/env python2
+#
+# 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:
+#
+# 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.
+#
+from string import Template
+
+from jvpp_model import is_request, is_dump, is_event
+
+
+def generate_java_impl(work_dir, model, logger):
+ logger.debug("Generating JVpp implementation for %s" % model.json_api_files)
+ messages = filter(_jvpp_impl_filter, model.messages)
+ plugin_package = model.plugin_package
+ methods = []
+ for msg in messages:
+ if msg.has_fields:
+ methods.append(_JVPP_IMPL_METHOD_TEMPLATE.substitute(
+ name=msg.java_name_lower,
+ plugin_package=plugin_package,
+ type=msg.java_name_upper))
+ else:
+ methods.append(_JVPP_IMPL_NO_ARG_METHOD_TEMPLATE.substitute(
+ name=msg.java_name_lower,
+ type=msg.java_name_upper))
+
+ plugin_name = model.plugin_java_name
+ jvpp_impl = _JVPP_IMPL_TEMPLATE.substitute(
+ plugin_package=plugin_package,
+ json_filename=model.json_api_files,
+ plugin_name=model.plugin_java_name,
+ plugin_name_underscore=model.plugin_name,
+ methods="\n".join(methods))
+
+ with open("%s/JVpp%sImpl.java" % (work_dir, plugin_name), "w") as f:
+ f.write(jvpp_impl)
+
+
+def _jvpp_impl_filter(msg):
+ return is_request(msg) or is_dump(msg) or is_event(msg)
+
+
+_JVPP_IMPL_TEMPLATE = Template("""package $plugin_package;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+import java.nio.file.attribute.PosixFilePermission;
+import java.nio.file.attribute.PosixFilePermissions;
+import java.util.Set;
+import java.util.logging.Logger;
+import java.util.logging.Level;
+import io.fd.vpp.jvpp.callback.JVppCallback;
+import io.fd.vpp.jvpp.VppConnection;
+import io.fd.vpp.jvpp.JVppRegistry;
+
+/**
+ * <p>Default implementation of JVpp interface.
+ * <br>It was generated by jvpp_impl_gen.py based on $json_filename.
+ * <br>(python representation of api file generated by vppapigen)
+ */
+public final class JVpp${plugin_name}Impl implements $plugin_package.JVpp${plugin_name} {
+
+ private final static Logger LOG = Logger.getLogger(JVpp${plugin_name}Impl.class.getName());
+ private static final String LIBNAME = "libjvpp_${plugin_name_underscore}.so";
+
+ // FIXME using NativeLibraryLoader makes load fail could not find (WantInterfaceEventsReply).
+ static {
+ try {
+ loadLibrary();
+ } catch (Exception e) {
+ LOG.severe("Can't find jvpp jni library: " + LIBNAME);
+ throw new ExceptionInInitializerError(e);
+ }
+ }
+
+ private static void loadStream(final InputStream is) throws IOException {
+ final Set<PosixFilePermission> perms = PosixFilePermissions.fromString("rwxr-x---");
+ final Path p = Files.createTempFile(LIBNAME, null, PosixFilePermissions.asFileAttribute(perms));
+ try {
+ Files.copy(is, p, StandardCopyOption.REPLACE_EXISTING);
+
+ try {
+ Runtime.getRuntime().load(p.toString());
+ } catch (UnsatisfiedLinkError e) {
+ throw new IOException("Failed to load library " + p, e);
+ }
+ } finally {
+ try {
+ Files.deleteIfExists(p);
+ } catch (IOException e) {
+ }
+ }
+ }
+
+ private static void loadLibrary() throws IOException {
+ try (final InputStream is = JVpp${plugin_name}Impl.class.getResourceAsStream('/' + LIBNAME)) {
+ if (is == null) {
+ throw new IOException("Failed to open library resource " + LIBNAME);
+ }
+ loadStream(is);
+ }
+ }
+
+ private VppConnection connection;
+ private JVppRegistry registry;
+
+ private static native void init0(final JVppCallback callback, final long queueAddress, final int clientIndex);
+ @Override
+ public void init(final JVppRegistry registry, final JVppCallback callback, final long queueAddress, final int clientIndex) {
+ this.registry = java.util.Objects.requireNonNull(registry, "registry should not be null");
+ this.connection = java.util.Objects.requireNonNull(registry.getConnection(), "connection should not be null");
+ connection.checkActive();
+ init0(callback, queueAddress, clientIndex);
+ }
+
+ private static native void close0();
+ @Override
+ public void close() {
+ close0();
+ }
+
+ @Override
+ public int send(io.fd.vpp.jvpp.dto.JVppRequest request) throws io.fd.vpp.jvpp.VppInvocationException {
+ return request.send(this);
+ }
+
+ @Override
+ public final int controlPing(final io.fd.vpp.jvpp.dto.ControlPing controlPing) throws io.fd.vpp.jvpp.VppInvocationException {
+ return registry.controlPing(JVpp${plugin_name}Impl.class);
+ }
+$methods
+}
+""")
+
+_JVPP_IMPL_METHOD_TEMPLATE = Template("""
+ private static native int ${name}0($plugin_package.dto.$type request);
+ public final int $name($plugin_package.dto.$type request) throws io.fd.vpp.jvpp.VppInvocationException {
+ java.util.Objects.requireNonNull(request, "Null request object");
+ connection.checkActive();
+ if (LOG.isLoggable(Level.FINE)) {
+ LOG.fine(String.format("Sending $type event message: %s", request));
+ }
+ int result=${name}0(request);
+ if (result<0){
+ throw new io.fd.vpp.jvpp.VppInvocationException("${name}", result);
+ }
+ return result;
+ }""")
+
+_JVPP_IMPL_NO_ARG_METHOD_TEMPLATE = Template("""
+ private static native int ${name}0() throws io.fd.vpp.jvpp.VppInvocationException;
+ public final int $name() throws io.fd.vpp.jvpp.VppInvocationException {
+ connection.checkActive();
+ LOG.fine("Sending $type event message");
+ int result=${name}0();
+ if(result<0){
+ throw new io.fd.vpp.jvpp.VppInvocationException("${name}", result);
+ }
+ return result;
+ }""")
diff --git a/extras/japi/java/jvpp/gen/jvppgen/jvpp_model.py b/extras/japi/java/jvpp/gen/jvppgen/jvpp_model.py
new file mode 100755
index 00000000000..299796b908b
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/jvpp_model.py
@@ -0,0 +1,570 @@
+#!/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'}
diff --git a/extras/japi/java/jvpp/gen/jvppgen/notification_gen.py b/extras/japi/java/jvpp/gen/jvppgen/notification_gen.py
new file mode 100644
index 00000000000..69e870ed33d
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/notification_gen.py
@@ -0,0 +1,226 @@
+#!/usr/bin/env python2
+#
+# 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:
+#
+# 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.
+from string import Template
+
+from jvpp_model import is_control_ping, is_control_ping_reply, is_dump, is_request
+
+
+def generate_notifications(work_dir, model, logger):
+ """ Generates notification registry interface and implementation """
+ logger.debug("Generating Notification interfaces and implementation for %s" % model.json_api_files)
+ messages = filter(_notification_filter, model.messages)
+ _generate_global_event_callback(work_dir, model, messages)
+ _generate_event_registry(work_dir, model, messages)
+ _generate_event_registry_impl(work_dir, model, messages)
+ _generate_event_registry_provider(work_dir, model)
+
+
+def _notification_filter(msg):
+ # Generate callbacks for all messages except for dumps and requests (handled by vpp, not client).
+ # Also skip control ping managed by jvpp registry.
+ return (not is_control_ping(msg)) and \
+ (not is_control_ping_reply(msg)) and \
+ (not is_dump(msg)) and \
+ (not is_request(msg))
+
+
+def _generate_event_registry(work_dir, model, messages):
+ plugin_name = model.plugin_java_name
+ plugin_package = model.plugin_package
+
+ register_callback_methods = []
+ for msg in messages:
+ name = _callback_name(msg)
+ fqn_name = _fqn_callback_name(plugin_package, name)
+ # TODO create NotificationListenerRegistration and return that instead of AutoCloseable to better indicate
+ # that the registration should be closed
+ register_callback_methods.append(" java.lang.AutoCloseable register%s(%s callback);" % (name, fqn_name))
+
+ with open("%s/%sEventRegistry.java" % (work_dir, plugin_name), "w") as f:
+ f.write(_EVENT_REGISTRY_TEMPLATE.substitute(
+ plugin_package=plugin_package,
+ plugin_name=plugin_name,
+ json_filename=model.json_api_files,
+ register_callback_methods="\n".join(register_callback_methods)
+ ))
+
+_EVENT_REGISTRY_TEMPLATE = Template("""
+package $plugin_package.notification;
+
+/**
+ * <p>Registry for notification callbacks defined in ${plugin_name}.
+ * <br>It was generated by notification_gen.py based on $json_filename.
+ */
+public interface ${plugin_name}EventRegistry extends io.fd.vpp.jvpp.notification.EventRegistry {
+
+$register_callback_methods
+
+ @Override
+ void close();
+}
+""")
+
+
+def _generate_event_registry_impl(work_dir, model, messages):
+ plugin_name = model.plugin_java_name
+ plugin_package = model.plugin_package
+
+ register_callback_methods = []
+ handler_methods = []
+ for msg in messages:
+ notification = msg.java_name_upper
+ callback = "%sCallback" % notification
+ register_callback_methods.append(_REGISTER_CALLBACK_IMPL_TEMPLATE.substitute(
+ plugin_package=plugin_package,
+ notification=notification,
+ callback=callback
+ ))
+ handler_methods.append(_HANDLER_IMPL_TEMPLATE.substitute(
+ plugin_package=plugin_package,
+ notification=notification,
+ callback=callback
+ ))
+
+ with open("%s/%sEventRegistryImpl.java" % (work_dir, plugin_name), "w") as f:
+ f.write(_EVENT_REGISTRY_IMPL_TEMPLATE.substitute(
+ plugin_package=plugin_package,
+ plugin_name=plugin_name,
+ json_filename=model.json_api_files,
+ register_callback_methods="".join(register_callback_methods),
+ handler_methods="".join(handler_methods)
+ ))
+
+_REGISTER_CALLBACK_IMPL_TEMPLATE = Template("""
+ public java.lang.AutoCloseable register$callback(final $plugin_package.callback.$callback callback){
+ if(null != registeredCallbacks.putIfAbsent($plugin_package.dto.$notification.class, callback)){
+ throw new IllegalArgumentException("Callback for " + $plugin_package.dto.$notification.class +
+ "notification already registered");
+ }
+ return () -> registeredCallbacks.remove($plugin_package.dto.$notification.class);
+ }
+""")
+
+_HANDLER_IMPL_TEMPLATE = Template("""
+ @Override
+ public void on$notification(
+ final $plugin_package.dto.$notification notification) {
+ if (LOG.isLoggable(java.util.logging.Level.FINE)) {
+ LOG.fine(String.format("Received $notification event message: %s", notification));
+ }
+ final io.fd.vpp.jvpp.callback.JVppCallback jVppCallback = registeredCallbacks.get($plugin_package.dto.$notification.class);
+ if (null != jVppCallback) {
+ (($plugin_package.callback.$callback) registeredCallbacks
+ .get($plugin_package.dto.$notification.class))
+ .on$notification(notification);
+ }
+ }
+""")
+
+_EVENT_REGISTRY_IMPL_TEMPLATE = Template("""
+package $plugin_package.notification;
+
+/**
+ * <p>Notification registry delegating notification processing to registered callbacks.
+ * <br>It was generated by notification_gen.py based on $json_filename.
+ */
+public final class ${plugin_name}EventRegistryImpl implements ${plugin_name}EventRegistry, Global${plugin_name}EventCallback {
+
+ // TODO add a special NotificationCallback interface and only allow those to be registered
+ private final java.util.concurrent.ConcurrentMap<Class<?>, io.fd.vpp.jvpp.callback.JVppCallback> registeredCallbacks =
+ new java.util.concurrent.ConcurrentHashMap<>();
+ private static java.util.logging.Logger LOG = java.util.logging.Logger.getLogger(${plugin_name}EventRegistryImpl.class.getName());
+
+ $register_callback_methods
+ $handler_methods
+
+ @Override
+ public void close() {
+ registeredCallbacks.clear();
+ }
+
+ @Override
+ public void onError(io.fd.vpp.jvpp.VppCallbackException ex) {
+ java.util.logging.Logger LOG = java.util.logging.Logger.getLogger(${plugin_name}EventRegistryImpl.class.getName());
+ LOG.log(java.util.logging.Level.WARNING, String.format("Received onError exception: call=%s, context=%d, retval=%d%n", ex.getMethodName(),
+ ex.getCtxId(), ex.getErrorCode()), ex);
+ }
+}
+""")
+
+
+def _generate_global_event_callback(work_dir, model, messages):
+ plugin_name = model.plugin_java_name
+ plugin_package = model.plugin_package
+
+ callbacks = ""
+ callback_list = []
+ for msg in messages:
+ fqn_name = _fqn_callback_name(plugin_package, _callback_name(msg))
+ callback_list.append(fqn_name)
+
+ if callback_list:
+ callbacks = " extends %s" % ", ".join(callback_list)
+
+ with open("%s/Global%sEventCallback.java" % (work_dir, plugin_name), "w") as f:
+ f.write(_GLOBAL_EVENT_CALLBACK_TEMPLATE.substitute(
+ plugin_package=plugin_package,
+ plugin_name=plugin_name,
+ json_filename=model.json_api_files,
+ callbacks=callbacks
+ ))
+
+_GLOBAL_EVENT_CALLBACK_TEMPLATE = Template("""
+package $plugin_package.notification;
+
+/**
+ * <p>Aggregated callback interface for notifications only.
+ * <br>It was generated by notification_gen.py based on $json_filename.
+ */
+public interface Global${plugin_name}EventCallback$callbacks {
+
+}
+""")
+
+
+def _generate_event_registry_provider(work_dir, model):
+ plugin_name = model.plugin_java_name
+ with open("%s/%sEventRegistryProvider.java" % (work_dir, plugin_name), "w") as f:
+ f.write(_EVENT_REGISTRY_PROVIDER_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ plugin_name=plugin_name,
+ json_filename=model.json_api_files
+ ))
+
+_EVENT_REGISTRY_PROVIDER_TEMPLATE = Template("""
+package $plugin_package.notification;
+
+ /**
+ * Provides ${plugin_name}EventRegistry.
+ * <br>The file was generated by notification_gen.py based on $json_filename.
+ */
+public interface ${plugin_name}EventRegistryProvider extends io.fd.vpp.jvpp.notification.EventRegistryProvider {
+
+ @Override
+ public ${plugin_name}EventRegistry getEventRegistry();
+}
+""")
+
+
+def _callback_name(msg):
+ return "%sCallback" % msg.java_name_upper
+
+
+def _fqn_callback_name(plugin_package, callback_name):
+ return "%s.callback.%s" % (plugin_package, callback_name)
diff --git a/extras/japi/java/jvpp/gen/jvppgen/types_gen.py b/extras/japi/java/jvpp/gen/jvppgen/types_gen.py
new file mode 100755
index 00000000000..3767b530347
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/types_gen.py
@@ -0,0 +1,60 @@
+#!/usr/bin/env python2
+#
+# 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:
+#
+# 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.
+from string import Template
+
+from jvpp_common_gen import generate_hash_code, generate_equals, generate_to_string, generate_fields
+from jvpp_model import Class
+
+
+def generate_types(work_dir, model, logger):
+ logger.debug("Generating custom types for %s " % model.json_api_files)
+
+ for t in model.types:
+ if not isinstance(t, Class):
+ continue
+ logger.debug("Generating DTO for type %s", t)
+ type_class_name = t.java_name
+ fields = t.fields
+ type_class = _TYPE_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ c_type_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ java_type_name=type_class_name,
+ fields=generate_fields(fields),
+ hash_code=generate_hash_code(fields),
+ equals=generate_equals(type_class_name, fields),
+ to_string=generate_to_string(type_class_name, fields)
+ )
+ with open("%s/%s.java" % (work_dir, type_class_name), "w") as f:
+ f.write(type_class)
+
+_TYPE_TEMPLATE = Template("""
+package $plugin_package.types;
+
+/**
+ * <p>This class represents $c_type_name type definition.
+ * <br>It was generated by jvpp_types_gen.py based on $json_filename:
+ * <pre>
+$json_definition
+ * </pre>
+ */
+public final class $java_type_name {
+$fields
+$hash_code
+$equals
+$to_string
+}
+""")
diff --git a/extras/japi/java/jvpp/gen/jvppgen/unions_gen.py b/extras/japi/java/jvpp/gen/jvppgen/unions_gen.py
new file mode 100755
index 00000000000..f67704f2426
--- /dev/null
+++ b/extras/japi/java/jvpp/gen/jvppgen/unions_gen.py
@@ -0,0 +1,98 @@
+#!/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.
+
+from string import Template
+
+from jvpp_common_gen import generate_hash_code, generate_equals, generate_to_string, generate_fields
+from jvpp_model import Union
+
+
+def generate_unions(work_dir, model, logger):
+ logger.debug("Generating unions for %s " % model.json_api_files)
+
+ for t in model.types:
+ if not isinstance(t, Union):
+ continue
+ logger.debug("Generating DTO for union %s", t)
+ java_union_name = t.java_name
+ fields = t.fields
+ type_class = _UNION_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ c_type_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ java_union_name=java_union_name,
+ fields=generate_fields(fields, access_modifier="private"),
+ constructors=_generate_constructors(java_union_name, fields),
+ getters=_generate_getters(fields),
+ hash_code=generate_hash_code(fields),
+ equals=generate_equals(java_union_name, fields),
+ to_string=generate_to_string(java_union_name, fields)
+ )
+ with open("%s/%s.java" % (work_dir, java_union_name), "w") as f:
+ f.write(type_class)
+
+_UNION_TEMPLATE = Template("""
+package ${plugin_package}.types;
+
+/**
+ * <p>This class represents ${c_type_name} union definition.
+ * <br>It was generated by unions_gen.py based on ${json_filename}:
+ * <pre>
+${json_definition}
+ * </pre>
+ */
+public class ${java_union_name} {
+ private final int _activeMember;
+${fields}
+ private ${java_union_name}() {
+ // Constructor for JNI usage. All members can be read.
+ _activeMember = -1;
+ }
+${constructors}
+${getters}
+${hash_code}
+${equals}
+${to_string}
+}
+""")
+
+
+def _generate_constructors(union_name, fields):
+ return "".join(
+ _CONSTRUCTOR_TEMPLATE
+ .substitute(union_name=union_name,
+ field_type=f.type.java_name_fqn,
+ field_name=f.java_name,
+ field_index=i) for i, f in enumerate(fields))
+
+_CONSTRUCTOR_TEMPLATE = Template("""
+ public ${union_name}(${field_type} ${field_name}) {
+ this.${field_name} = java.util.Objects.requireNonNull(${field_name}, "${field_name} should not be null");
+ _activeMember = $field_index;
+ }""")
+
+
+def _generate_getters(fields):
+ return "".join(_GETTER_TEMPLATE.substitute(
+ type=f.type.java_name_fqn,
+ getter_name=f.java_name_upper,
+ field_name=f.java_name
+ ) for f in fields)
+
+_GETTER_TEMPLATE = Template("""
+ public ${type} get${getter_name}() {
+ return ${field_name};
+ }""")