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one/include/HookImplementation.h
2023-01-09 12:23:19 +01:00

68 lines
2.4 KiB
C++

/* -------------------------------------------------------------------------- */
/* Copyright 2002-2023, OpenNebula Project, OpenNebula Systems */
/* */
/* 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. */
/* -------------------------------------------------------------------------- */
#ifndef HOOK_IMPLEMENTATION_H_
#define HOOK_IMPLEMENTATION_H_
#include <string>
class Template;
class Hook;
/**
* This is an abstract interface for any Hook class. It provides the
* specific logic for the Hook type. It is included by the Hook class that
* handles persistency.
*/
class HookImplementation
{
protected:
friend class Hook;
HookImplementation() = default;
virtual ~HookImplementation() = default;
/**
* Builds the hook from its template implementation
* @param tmpl Template with hook attributes
* @param error description
*
* @return 0 on success
*/
virtual int from_template(const Template * tmpl, std::string& error) = 0;
/**
* This function is execute custom setups after updating the hook template
* @param tmpl updated template
* @param error description
*
* @return 0 on success
*/
virtual int post_update_template(Template * tmpl, std::string& error) = 0;
/**
* This function parses the hook template upon creation
* @param tmpl updated template
* @param error description
*
* @return 0 on success
*/
virtual int parse_template(Template *tmpl, std::string& error_str) = 0;
};
#endif