Add support for config file parsing and watching

[ric-plt/xapp-frame-cpp.git] / src / config / config_cb.hpp

diff --git a/src/config/config_cb.hpp b/src/config/config_cb.hpp
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+++ b/src/config/config_cb.hpp
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+
+// vi: ts=4 sw=4 noet:
+/*
+==================================================================================
+       Copyright (c) 2020 Nokia
+       Copyright (c) 2020 AT&T Intellectual Property.
+
+   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.
+==================================================================================
+*/
+
+/*
+       Mnemonic:       callback.hpp
+       Abstract:       Manages config notification callback data and such.
+                               This is a bit of over kill because, unlike the message
+                               receipt callbacks, there is only one potential callback
+                               for the config. We could manage this inside of the conf
+                               class, but if there is ever the need to have multiple
+                               callbacks, the base is set.
+
+       Date:           27 July 2020
+       Author:         E. Scott Daniels
+*/
+
+
+#ifndef _XAPP_CONF_CB_HPP
+#define _XAPP_CONF_CB_HPP
+
+#include <memory>
+
+namespace xapp {
+
+class Config;
+
+/*
+       Describes the user function that we will invoke
+*/
+typedef void(*notify_callback)( xapp::Config& c, void* user_data );
+
+class Config_cb {
+
+       private:
+               notify_callback user_fun;
+               void*   udata;                                                                  // user data
+
+       public:
+               Config_cb( notify_callback cbfun, void* user_data );            // builder
+               void Drive_cb( xapp::Config& c, void* udata );                          // invoker
+};
+
+} // namespace
+
+#endif
+