Create python package for jvpp generation.
Change-Id: I2254f90b2c3e423563bb91bf70877979f1e86a6b
Signed-off-by: Ed Warnicke <eaw@cisco.com>
Signed-off-by: Marek Gradzki <mgradzki@cisco.com>
diff --git a/vpp-api/java/jvpp/gen/jvppgen/notification_gen.py b/vpp-api/java/jvpp/gen/jvppgen/notification_gen.py
new file mode 100644
index 0000000..df6407f
--- /dev/null
+++ b/vpp-api/java/jvpp/gen/jvppgen/notification_gen.py
@@ -0,0 +1,164 @@
+#!/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
+
+import callback_gen
+import util
+from string import Template
+
+from util import remove_suffix
+
+notification_registry_template = Template("""
+package $base_package.$notification_package;
+
+/**
+ * <p>Registry for notification callbacks.
+ * <br>It was generated by notification_gen.py based on $inputfile
+ * <br>(python representation of vpe.api generated by vppapigen).
+ */
+public interface NotificationRegistry extends java.lang.AutoCloseable {
+
+ $register_callback_methods
+
+ @Override
+ void close();
+}
+""")
+
+global_notification_callback_template = Template("""
+package $base_package.$notification_package;
+
+/**
+ * <p>Aggregated callback interface for notifications only.
+ * <br>It was generated by notification_gen.py based on $inputfile
+ * <br>(python representation of vpe.api generated by vppapigen).
+ */
+public interface GlobalNotificationCallback extends $callbacks {
+
+}
+""")
+
+notification_registry_impl_template = Template("""
+package $base_package.$notification_package;
+
+/**
+ * <p>Notification registry delegating notification processing to registered callbacks.
+ * <br>It was generated by notification_gen.py based on $inputfile
+ * <br>(python representation of vpe.api generated by vppapigen).
+ */
+public final class NotificationRegistryImpl implements NotificationRegistry, GlobalNotificationCallback {
+
+ // TODO add a special NotificationCallback interface and only allow those to be registered
+ private final java.util.concurrent.ConcurrentMap<Class<? extends $base_package.$dto_package.JVppNotification>, $base_package.$callback_package.JVppNotificationCallback> registeredCallbacks =
+ new java.util.concurrent.ConcurrentHashMap<>();
+
+ $register_callback_methods
+ $handler_methods
+
+ @Override
+ public void close() {
+ registeredCallbacks.clear();
+ }
+}
+""")
+
+register_callback_impl_template = Template("""
+ public java.lang.AutoCloseable register$callback(final $base_package.$callback_package.$callback callback){
+ if(null != registeredCallbacks.putIfAbsent($base_package.$dto_package.$notification.class, callback)){
+ throw new IllegalArgumentException("Callback for " + $base_package.$dto_package.$notification.class +
+ "notification already registered");
+ }
+ return () -> registeredCallbacks.remove($base_package.$dto_package.$notification.class);
+ }
+""")
+
+handler_impl_template = Template("""
+ @Override
+ public void on$notification(
+ final $base_package.$dto_package.$notification notification) {
+ final $base_package.$callback_package.JVppNotificationCallback JVppNotificationCallback = registeredCallbacks.get($base_package.$dto_package.$notification.class);
+ if (null != JVppNotificationCallback) {
+ (($base_package.$callback_package.$callback) registeredCallbacks
+ .get($base_package.$dto_package.$notification.class))
+ .on$notification(notification);
+ }
+ }
+""")
+
+
+def generate_notification_registry(func_list, base_package, notification_package, callback_package, dto_package, inputfile):
+ """ Generates notification registry interface and implementation """
+ print "Generating Notification interfaces and implementation"
+
+ if not os.path.exists(notification_package):
+ raise Exception("%s folder is missing" % notification_package)
+
+ callbacks = []
+ register_callback_methods = []
+ register_callback_methods_impl = []
+ handler_methods = []
+ for func in func_list:
+
+ if not util.is_notification(func['name']):
+ continue
+
+ camel_case_name_with_suffix = util.underscore_to_camelcase_upper(func['name'])
+ notification_dto = util.add_notification_suffix(camel_case_name_with_suffix)
+ callback_ifc = notification_dto + callback_gen.callback_suffix
+ fully_qualified_callback_ifc = "{0}.{1}.{2}".format(base_package, callback_package, callback_ifc)
+ callbacks.append(fully_qualified_callback_ifc)
+
+ # 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{0}({1} callback);"
+ .format(callback_ifc, fully_qualified_callback_ifc))
+ register_callback_methods_impl.append(register_callback_impl_template.substitute(base_package=base_package,
+ callback_package=callback_package,
+ dto_package=dto_package,
+ notification=notification_dto,
+ callback=callback_ifc))
+ handler_methods.append(handler_impl_template.substitute(base_package=base_package,
+ callback_package=callback_package,
+ dto_package=dto_package,
+ notification=notification_dto,
+ callback=callback_ifc))
+ if(callbacks):
+ callback_file = open(os.path.join(notification_package, "NotificationRegistry.java"), 'w')
+ callback_file.write(notification_registry_template.substitute(inputfile=inputfile,
+ register_callback_methods="\n ".join(register_callback_methods),
+ base_package=base_package,
+ notification_package=notification_package))
+ callback_file.flush()
+ callback_file.close()
+
+ callback_file = open(os.path.join(notification_package, "GlobalNotificationCallback.java"), 'w')
+ callback_file.write(global_notification_callback_template.substitute(inputfile=inputfile,
+ callbacks=", ".join(callbacks),
+ base_package=base_package,
+ notification_package=notification_package))
+ callback_file.flush()
+ callback_file.close()
+
+ callback_file = open(os.path.join(notification_package, "NotificationRegistryImpl.java"), 'w')
+ callback_file.write(notification_registry_impl_template.substitute(inputfile=inputfile,
+ callback_package=callback_package,
+ dto_package=dto_package,
+ register_callback_methods="".join(register_callback_methods_impl),
+ handler_methods="".join(handler_methods),
+ base_package=base_package,
+ notification_package=notification_package))
+ callback_file.flush()
+ callback_file.close()