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#!/usr/bin/env python
#
# Copyright (c) 2016 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os, util
from string import Template
import dto_gen
jvpp_facade_callback_template = Template("""
package $base_package.$future_package;
/**
* Async facade callback setting values to future objects
*/
public final class FutureJVppFacadeCallback implements $base_package.$callback_package.JVppGlobalCallback {
private final java.util.Map<java.lang.Integer, java.util.concurrent.CompletableFuture<? extends $base_package.$dto_package.JVppReply<?>>> requests;
public FutureJVppFacadeCallback(final java.util.Map<java.lang.Integer, java.util.concurrent.CompletableFuture<? extends $base_package.$dto_package.JVppReply<?>>> requestMap) {
this.requests = requestMap;
}
$methods
}
""")
jvpp_facade_callback_method_template = Template("""
@Override
@SuppressWarnings("unchecked")
public void on$callback_dto($base_package.$dto_package.$callback_dto reply) {
final java.util.concurrent.CompletableFuture<$base_package.$dto_package.JVppReply<?>> completableFuture;
synchronized(requests) {
completableFuture = (java.util.concurrent.CompletableFuture<$base_package.$dto_package.JVppReply<?>>) requests.get(reply.context);
}
if(completableFuture != null) {
if(reply.retval < 0) {
completableFuture.completeExceptionally(new Exception("Invocation of " + $base_package.$dto_package.$callback_dto.class
+ " failed with value " + reply.retval));
} else {
completableFuture.complete(reply);
}
synchronized(requests) {
requests.remove(reply.context);
}
}
}
""")
# TODO reuse common parts with generic method callback
jvpp_facade_control_ping_method_template = Template("""
@Override
@SuppressWarnings("unchecked")
public void on$callback_dto($base_package.$dto_package.$callback_dto reply) {
final java.util.concurrent.CompletableFuture<$base_package.$dto_package.JVppReply<?>> completableFuture;
synchronized(requests) {
completableFuture = (java.util.concurrent.CompletableFuture<$base_package.$dto_package.JVppReply<?>>) requests.get(reply.context);
}
if(completableFuture != null) {
// Finish dump call
if (completableFuture instanceof $base_package.$future_package.FutureJVppFacade.CompletableDumpFuture) {
completableFuture.complete((($base_package.$future_package.FutureJVppFacade.CompletableDumpFuture) completableFuture).getReplyDump());
// Remove future mapped to dump call context id
synchronized(requests) {
requests.remove((($base_package.$future_package.FutureJVppFacade.CompletableDumpFuture) completableFuture).getContextId());
}
} else {
if(reply.retval < 0) {
completableFuture.completeExceptionally(new Exception("Invocation of " + $base_package.$dto_package.$callback_dto.class
+ " failed with value " + reply.retval));
} else {
completableFuture.complete(reply);
}
}
synchronized(requests) {
requests.remove(reply.context);
}
}
}
""")
jvpp_facade_details_callback_method_template = Template("""
@Override
@SuppressWarnings("unchecked")
public void on$callback_dto($base_package.$dto_package.$callback_dto reply) {
final FutureJVppFacade.CompletableDumpFuture<$base_package.$dto_package.$callback_dto_reply_dump> completableFuture;
synchronized(requests) {
completableFuture = ($base_package.$future_package.FutureJVppFacade.CompletableDumpFuture<$base_package.$dto_package.$callback_dto_reply_dump>) requests.get(reply.context);
}
if(completableFuture != null) {
$base_package.$dto_package.$callback_dto_reply_dump replyDump = completableFuture.getReplyDump();
if(replyDump == null) {
replyDump = new $base_package.$dto_package.$callback_dto_reply_dump();
completableFuture.setReplyDump(replyDump);
}
replyDump.$callback_dto_field.add(reply);
}
}
""")
def generate_jvpp(func_list, base_package, dto_package, callback_package, future_facade_package):
""" Generates JVpp interface and JNI implementation """
print "Generating JVpp future facade"
if not os.path.exists(future_facade_package):
raise Exception("%s folder is missing" % future_facade_package)
callbacks = []
for func in func_list:
if util.is_notification(func['name']) or util.is_ignored(func['name']):
# TODO handle notifications
continue
camel_case_name_with_suffix = util.underscore_to_camelcase_upper(func['name'])
if not util.is_reply(camel_case_name_with_suffix):
continue
if util.is_details(camel_case_name_with_suffix):
camel_case_method_name = util.underscore_to_camelcase(func['name'])
camel_case_request_name = get_standard_dump_reply_name(util.underscore_to_camelcase_upper(func['name']),
func['name'])
callbacks.append(jvpp_facade_details_callback_method_template.substitute(base_package=base_package,
dto_package=dto_package,
callback_dto=camel_case_name_with_suffix,
callback_dto_field=camel_case_method_name,
callback_dto_reply_dump=camel_case_request_name + dto_gen.dump_dto_suffix,
future_package=future_facade_package))
else:
if util.is_control_ping(camel_case_name_with_suffix):
callbacks.append(jvpp_facade_control_ping_method_template.substitute(base_package=base_package,
dto_package=dto_package,
callback_dto=camel_case_name_with_suffix,
future_package=future_facade_package))
else:
callbacks.append(jvpp_facade_callback_method_template.substitute(base_package=base_package,
dto_package=dto_package,
callback_dto=camel_case_name_with_suffix))
jvpp_file = open(os.path.join(future_facade_package, "FutureJVppFacadeCallback.java"), 'w')
jvpp_file.write(jvpp_facade_callback_template.substitute(base_package=base_package,
dto_package=dto_package,
callback_package=callback_package,
methods="".join(callbacks),
future_package=future_facade_package))
jvpp_file.flush()
jvpp_file.close()
# Returns request name or special one from unconventional_naming_rep_req map
def get_standard_dump_reply_name(camel_case_dto_name, func_name):
# FIXME this is a hotfix for sub-details callbacks
# FIXME also for L2FibTableEntry
# It's all because unclear mapping between
# request -> reply,
# dump -> reply, details,
# notification_start -> reply, notifications
# vpe.api needs to be "standardized" so we can parse the information and create maps before generating java code
suffix = func_name.split("_")[-1]
return util.underscore_to_camelcase_upper(
util.unconventional_naming_rep_req[func_name]) + util.underscore_to_camelcase_upper(suffix) if func_name in util.unconventional_naming_rep_req \
else camel_case_dto_name
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