tec_daemon.hpp

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// Time-stamp: <Last changed 2026-02-25 14:49:21 by magnolia>
/*----------------------------------------------------------------------
------------------------------------------------------------------------
Copyright (c) 2020-2026 The Emacs Cat (https://github.com/olddeuteronomy/tec).
 
   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.
------------------------------------------------------------------------
----------------------------------------------------------------------*/
#pragma once
 
#include "tec/tec_def.hpp" // IWYU pragma: keep
#include "tec/tec_status.hpp"
#include "tec/tec_signal.hpp"
#include "tec/tec_message.hpp"
 
 
namespace tec {
 
class Daemon {
public:
    Daemon() = default;
 
    virtual ~Daemon() = default;
 
    Daemon(const Daemon&) = delete;
    Daemon(Daemon&&) = delete;
 
    virtual Status run() = 0;
 
    virtual Status terminate() = 0;
 
    virtual void send(Message&& msg) = 0;
 
    virtual const Signal& sig_terminated() const = 0;
 
    virtual Status make_request(Request&&, Reply&&) = 0;
 
    template <typename TRequest, typename TReply>
    Status request(const TRequest* req, TReply* rep) {
        return make_request({req}, {rep});
    }
 
    template <typename TRequest>
    Status request(const TRequest* req) {
        return make_request({req}, {});
    }
 
public:
 
    template <typename Derived>
    struct Builder {
        std::unique_ptr<Daemon> operator()(typename Derived::Params const& params) {
            static_assert(std::is_base_of<Daemon, Derived>::value,
                          "Derived type must inherit from tec::Daemon");
            return std::make_unique<Derived>(params);
        }
    };
 
}; // class Daemon
 
} // namespace tec