[
https://issues.apache.org/jira/browse/MINIFICPP-110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16235583#comment-16235583
]
ASF GitHub Bot commented on MINIFICPP-110:
------------------------------------------
Github user phrocker commented on a diff in the pull request:
https://github.com/apache/nifi-minifi-cpp/pull/163#discussion_r147789710
--- Diff: libminifi/include/lua/LuaProcessSession.h ---
@@ -0,0 +1,86 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+#ifndef NIFI_MINIFI_CPP_LUAPROCESSSESSION_H
+#define NIFI_MINIFI_CPP_LUAPROCESSSESSION_H
+
+#include <sol.hpp>
+
+#include <core/ProcessSession.h>
+#include <script/ScriptFlowFile.h>
+#include <lua/LuaBaseStream.h>
+
+namespace org {
+namespace apache {
+namespace nifi {
+namespace minifi {
+namespace lua {
+
+class LuaProcessSession {
+ public:
+ explicit LuaProcessSession(core::ProcessSession *session);
+
+ std::shared_ptr<script::ScriptFlowFile> get();
+ std::shared_ptr<script::ScriptFlowFile> create();
+ std::shared_ptr<script::ScriptFlowFile>
create(std::shared_ptr<script::ScriptFlowFile> flow_file);
+ void transfer(std::shared_ptr<script::ScriptFlowFile> flow_file,
core::Relationship relationship);
+ void read(std::shared_ptr<script::ScriptFlowFile> flow_file, sol::table
input_stream_callback);
+ void write(std::shared_ptr<script::ScriptFlowFile> flow_file, sol::table
output_stream_callback);
+
+ class LuaInputStreamCallback : public InputStreamCallback {
+ public:
+ explicit LuaInputStreamCallback(const sol::table
&input_stream_callback) {
+ lua_callback_ = input_stream_callback;
+ }
+
+ int64_t process(std::shared_ptr<io::BaseStream> stream) override {
+ auto lua_stream = std::make_shared<LuaBaseStream>(stream);
+ sol::function callback = lua_callback_["process"];
+ return callback(lua_callback_, lua_stream);
+ }
+
+ private:
+ sol::table lua_callback_;
+ };
+
+ class LuaOutputStreamCallback : public OutputStreamCallback {
+ public:
+ explicit LuaOutputStreamCallback(const sol::table
&output_stream_callback) {
+ lua_callback_ = output_stream_callback;
+ }
+
+ int64_t process(std::shared_ptr<io::BaseStream> stream) override {
+ auto lua_stream = std::make_shared<LuaBaseStream>(stream);
+ sol::function callback = lua_callback_["process"];
+ return callback(lua_callback_, lua_stream);
+ }
+
+ private:
+ sol::table lua_callback_;
+ };
+
+ private:
+ core::ProcessSession *session_;
--- End diff --
If you're keeping a raw pointer have you been able to verify if the scope
of this raw pointer is in the synchronous confines of a call from
onTrigger/onSchedule?
> Implement ExecuteScript
> -----------------------
>
> Key: MINIFICPP-110
> URL: https://issues.apache.org/jira/browse/MINIFICPP-110
> Project: NiFi MiNiFi C++
> Issue Type: New Feature
> Reporter: Andrew Christianson
> Assignee: Andrew Christianson
> Priority: Major
>
> Initially support python and lua.
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