--- /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_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);
+ }
+""")
Code Review / vpp.git / blobdiff