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>

vpp-api/java/jvpp/gen/jvppgen/callback_gen.py

@@ -0,0 +1,102 @@
+#!/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 util
+from string import Template
+
+from util import remove_suffix
+
+callback_suffix = "Callback"
+
+callback_template = Template("""
+package $base_package.$callback_package;
+
+/**
+ * <p>Represents callback for vpe.api message.
+ * <br>It was generated by callback_gen.py based on $inputfile preparsed data:
+ * <pre>
+$docs
+ * </pre>
+ */
+public interface $cls_name extends $base_package.$callback_package.$callback_type {
+
+    $callback_method
+
+}
+""")
+
+global_callback_template = Template("""
+package $base_package.$callback_package;
+
+/**
+ * <p>Global aggregated callback interface.
+ * <br>It was generated by callback_gen.py based on $inputfile
+ * <br>(python representation of vpe.api generated by vppapigen).
+ */
+public interface JVppGlobalCallback extends $callbacks {
+}
+""")
+
+
+def generate_callbacks(func_list, base_package, callback_package, dto_package, inputfile):
+    """ Generates callback interfaces """
+    print "Generating Callback interfaces"
+
+    if not os.path.exists(callback_package):
+        raise Exception("%s folder is missing" % callback_package)
+
+    callbacks = []
+    for func in func_list:
+
+        if util.is_ignored(func['name']):
+            continue
+
+        camel_case_name_with_suffix = util.underscore_to_camelcase_upper(func['name'])
+        if not util.is_reply(camel_case_name_with_suffix) and not util.is_notification(func['name']):
+            continue
+
+        if util.is_reply(camel_case_name_with_suffix):
+            camel_case_name = util.remove_reply_suffix(camel_case_name_with_suffix)
+            callback_type = "JVppCallback"
+        else:
+            camel_case_name_with_suffix = util.add_notification_suffix(camel_case_name_with_suffix)
+            camel_case_name = camel_case_name_with_suffix
+            callback_type = "JVppNotificationCallback"
+
+        callbacks.append("{0}.{1}.{2}".format(base_package, callback_package, camel_case_name + callback_suffix))
+        callback_path = os.path.join(callback_package, camel_case_name + callback_suffix + ".java")
+        callback_file = open(callback_path, 'w')
+
+        reply_type = "%s.%s.%s" % (base_package, dto_package, camel_case_name_with_suffix)
+        method = "void on{0}({1} reply);".format(camel_case_name_with_suffix, reply_type)
+        callback_file.write(
+            callback_template.substitute(inputfile=inputfile,
+                                         docs=util.api_message_to_javadoc(func),
+                                         cls_name=camel_case_name + callback_suffix,
+                                         callback_method=method,
+                                         base_package=base_package,
+                                         callback_package=callback_package,
+                                         callback_type=callback_type))
+        callback_file.flush()
+        callback_file.close()
+
+    callback_file = open(os.path.join(callback_package, "JVppGlobalCallback.java"), 'w')
+    callback_file.write(global_callback_template.substitute(inputfile=inputfile,
+                                                            callbacks=", ".join(callbacks),
+                                                            base_package=base_package,
+                                                            callback_package=callback_package))
+    callback_file.flush()
+    callback_file.close()