--- /dev/null
+#!/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)
Code Review / vpp.git / blobdiff