Move java api to extras/

Change-Id: Ibd5cbbdfb22a235442cddaebc9eae9a3c4e35ec9
Signed-off-by: Damjan Marion <damarion@cisco.com>

extras/japi/java/jvpp/gen/jvppgen/callback_gen.py

@@ -0,0 +1,73 @@
+#!/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_request, is_dump, is_control_ping, is_control_ping_reply
+
+
+def generate_callbacks(work_dir, model, logger):
+    json_api_files = model.json_api_files
+    logger.debug("Generating Callback interfaces for %s" % json_api_files)
+    plugin_package = model.plugin_package
+
+    callbacks = []
+    for msg in model.messages:
+        name = msg.java_name_upper
+        if is_control_ping(msg) or is_control_ping_reply(msg):
+            # Skip control_ping managed by jvpp registry.
+            continue
+        if is_dump(msg) or is_request(msg):
+            continue
+
+        callbacks.append("%s.callback.%sCallback" % (plugin_package, name))
+        callback = _CALLBACK_TEMPLATE.substitute(
+            plugin_package=plugin_package,
+            json_filename=json_api_files,
+            name=name)
+
+        with open("%s/%sCallback.java" % (work_dir, name), "w") as f:
+            f.write(callback)
+
+    plugin_name = model.plugin_java_name
+    with open("%s/JVpp%sGlobalCallback.java" % (work_dir, plugin_name), "w") as f:
+        f.write(_GLOBAL_CALLBACK_TEMPLATE.substitute(
+            plugin_package=plugin_package,
+            json_filename=json_api_files,
+            plugin_name=plugin_name,
+            callbacks=", ".join(callbacks)
+        ))
+
+_CALLBACK_TEMPLATE = Template("""package $plugin_package.callback;
+
+/**
+ * <p>Represents callback for plugin's api message.
+ * <br>It was generated by jvpp_callback_gen.py based on $json_filename.
+ */
+public interface ${name}Callback extends io.fd.vpp.jvpp.callback.JVppCallback {
+
+    void on${name}(${plugin_package}.dto.${name} reply);
+}
+""")
+
+_GLOBAL_CALLBACK_TEMPLATE = Template("""package $plugin_package.callback;
+
+/**
+ * <p>Global aggregated callback interface.
+ * <br>It was generated by jvpp_callback_gen.py based on $json_filename.
+ */
+public interface JVpp${plugin_name}GlobalCallback extends io.fd.vpp.jvpp.callback.ControlPingCallback, $callbacks {
+}
+""")