Move java api to extras/

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

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

@@ -0,0 +1,71 @@
+#!/usr/bin/env python2
+#
+# Copyright (c) 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_event
+
+
+def generate_java_ifc(work_dir, model, logger):
+    logger.debug("Generating JVpp interface for %s" % model.json_api_files)
+    messages = filter(_jvpp_ifc_filter, model.messages)
+    plugin_package = model.plugin_package
+    methods = []
+    for msg in messages:
+        if msg.has_fields:
+            methods.append(_JVPP_IFC_METHOD_TEMPLATE.substitute(
+                name=msg.java_name_lower,
+                plugin_package=plugin_package,
+                type=msg.java_name_upper))
+        else:
+            methods.append(_JVPP_IFC_NO_ARG_METHOD_TEMPLATE.substitute(name=msg.java_name_lower))
+
+    plugin_name = model.plugin_java_name
+    jvpp_interface = _JVPP_IFC_TEMPLATE.substitute(
+        plugin_package=plugin_package,
+        json_filename=model.json_api_files,
+        plugin_name=plugin_name,
+        methods="\n".join(methods)
+    )
+    with open("%s/JVpp%s.java" % (work_dir, plugin_name), "w") as f:
+        f.write(jvpp_interface)
+
+
+def _jvpp_ifc_filter(msg):
+    return is_request(msg) or is_dump(msg) or is_event(msg)
+
+
+_JVPP_IFC_METHOD_TEMPLATE = Template(
+    """    int $name($plugin_package.dto.$type request) throws io.fd.vpp.jvpp.VppInvocationException;""")
+
+_JVPP_IFC_NO_ARG_METHOD_TEMPLATE = Template("""    int $name() throws io.fd.vpp.jvpp.VppInvocationException;""")
+
+_JVPP_IFC_TEMPLATE = Template("""package $plugin_package;
+
+/**
+ * <p>Java representation of plugin's api file.
+ * <br>It was generated by jvpp_impl_gen.py based on $json_filename.
+ * <br>(python representation of api file generated by vppapigen)
+ */
+public interface JVpp${plugin_name} extends io.fd.vpp.jvpp.JVpp {
+    /**
+     * Generic dispatch method for sending requests to VPP
+     *
+     * @throws io.fd.vpp.jvpp.VppInvocationException if send request had failed
+     */
+    int send(io.fd.vpp.jvpp.dto.JVppRequest request) throws io.fd.vpp.jvpp.VppInvocationException;
+$methods
+}
+""")