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>

1 files changed, 173 insertions, 0 deletions

diff --git a/vpp-api/java/jvpp/gen/jvppgen/jvpp_impl_gen.py b/vpp-api/java/jvpp/gen/jvppgen/jvpp_impl_gen.py
new file mode 100644
index 00000000000..93ffd0fb359
--- /dev/null
+++ b/vpp-api/java/jvpp/gen/jvppgen/jvpp_impl_gen.py
@@ -0,0 +1,173 @@
+#!/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, util
+from string import Template
+
+jvpp_ifc_template = Template("""
+package $base_package;
+
+
+/**
+ * <p>Java representation of vpe.api.
+ * <br>It was generated by jvpp_impl_gen.py based on $inputfile
+ * <br>(python representation of vpe.api generated by vppapigen).
+ */
+public interface JVpp extends java.lang.AutoCloseable {
+
+    /**
+     * Generic connect with $base_package.callback.JVppCallback callback handler
+     * providing connecting to VPP
+     *
+     * @param callback JVppCallback instance providing callback handling
+     *
+     * @throws java.io.IOException if connection cannot be initiated
+     */
+    void connect($base_package.callback.JVppCallback callback) throws java.io.IOException;
+
+    /**
+     * Generic dispatch method for sending requests to VPP
+     *
+     * @throws org.openvpp.jvpp.VppInvocationException if send request had failed
+     */
+    int send($base_package.$dto_package.JVppRequest request) throws org.openvpp.jvpp.VppInvocationException;
+
+    @Override
+    void close();
+
+$methods
+}
+""")
+
+jvpp_impl_template = Template("""
+package $base_package;
+
+/**
+ * <p>Default implementation of JVpp interface.
+ * <br>It was generated by jvpp_impl_gen.py based on $inputfile
+ * <br>(python representation of vpe.api generated by vppapigen).
+ */
+public final class JVppImpl implements $base_package.JVpp {
+
+    private final $base_package.VppConnection connection;
+
+    public JVppImpl(final $base_package.VppConnection connection) {
+        this.connection = java.util.Objects.requireNonNull(connection,"Connection is null");
+    }
+
+    @Override
+    public void connect($base_package.callback.JVppCallback callback) throws java.io.IOException {
+        connection.connect(callback);
+    }
+
+    @Override
+    public void close() {
+        connection.close();
+    }
+
+    @Override
+    public int send($base_package.$dto_package.JVppRequest request)  throws org.openvpp.jvpp.VppInvocationException {
+        return request.send(this);
+    }
+
+$methods
+}
+""")
+
+method_template = Template("""    int $name($base_package.$dto_package.$request request) throws org.openvpp.jvpp.VppInvocationException;""")
+method_native_template = Template(
+    """    private static native int ${name}0($base_package.$dto_package.$request request);""")
+method_impl_template = Template("""    public final int $name($base_package.$dto_package.$request request) throws org.openvpp.jvpp.VppInvocationException {
+        java.util.Objects.requireNonNull(request,"Null request object");
+        connection.checkActive();
+        int result=${name}0(request);
+        if(result<0){
+            throw new org.openvpp.jvpp.VppInvocationException("${name}",result);
+        }
+        return result;
+    }
+""")
+
+no_arg_method_template = Template("""    int $name() throws org.openvpp.jvpp.VppInvocationException;""")
+no_arg_method_native_template = Template("""    private static native int ${name}0() throws org.openvpp.jvpp.VppInvocationException;""")
+no_arg_method_impl_template = Template("""    public final int $name() throws org.openvpp.jvpp.VppInvocationException {
+        connection.checkActive();
+        int result=${name}0();
+        if(result<0){
+            throw new org.openvpp.jvpp.VppInvocationException("${name}",result);
+        }
+        return result;
+    }
+""")
+
+
+def generate_jvpp(func_list, base_package, dto_package, inputfile):
+    """ Generates JVpp interface and JNI implementation """
+    print "Generating JVpp"
+
+    methods = []
+    methods_impl = []
+    for func in func_list:
+
+        # Skip structures that are used only as notifications
+        if util.is_just_notification(func['name']) or util.is_ignored(func['name']):
+            continue
+
+        camel_case_name = util.underscore_to_camelcase(func['name'])
+        camel_case_name_upper = util.underscore_to_camelcase_upper(func['name'])
+        if util.is_reply(camel_case_name):
+            continue
+
+        if len(func['args']) == 0:
+            methods.append(no_arg_method_template.substitute(name=camel_case_name,
+                                                             base_package=base_package,
+                                                             dto_package=dto_package))
+            methods_impl.append(
+                no_arg_method_native_template.substitute(name=camel_case_name,
+                                                         base_package=base_package,
+                                                         dto_package=dto_package))
+            methods_impl.append(no_arg_method_impl_template.substitute(name=camel_case_name,
+                                                                       base_package=base_package,
+                                                                       dto_package=dto_package))
+        else:
+            methods.append(method_template.substitute(name=camel_case_name,
+                                                      request=camel_case_name_upper,
+                                                      base_package=base_package,
+                                                      dto_package=dto_package))
+            methods_impl.append(method_native_template.substitute(name=camel_case_name,
+                                                                  request=camel_case_name_upper,
+                                                                  base_package=base_package,
+                                                                  dto_package=dto_package))
+            methods_impl.append(method_impl_template.substitute(name=camel_case_name,
+                                                                request=camel_case_name_upper,
+                                                                base_package=base_package,
+                                                                dto_package=dto_package))
+
+    jvpp_file = open("JVpp.java", 'w')
+    jvpp_file.write(
+        jvpp_ifc_template.substitute(inputfile=inputfile,
+                                     methods="\n".join(methods),
+                                     base_package=base_package,
+                                     dto_package=dto_package))
+    jvpp_file.flush()
+    jvpp_file.close()
+
+    jvpp_file = open("JVppImpl.java", 'w')
+    jvpp_file.write(jvpp_impl_template.substitute(inputfile=inputfile,
+                                                  methods="\n".join(methods_impl),
+                                                  base_package=base_package,
+                                                  dto_package=dto_package))
+    jvpp_file.flush()
+    jvpp_file.close()