backend_selector.h

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// Copyright (C) 2018-2019 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#ifndef BACKEND_SELECTOR_H
#define BACKEND_SELECTOR_H

#include <cc/data.h>
#include <cc/cfg_to_element.h>
#include <cstdint>
#include <string>

namespace isc {
namespace db {

class BackendSelector : public data::CfgToElement {
public:

    enum class Type {
        MYSQL,
        PGSQL,
        CQL,
        UNSPEC
    };

    explicit BackendSelector();

    explicit BackendSelector(const Type& backend_type);

    explicit BackendSelector(const std::string& host, const uint16_t port = 0);

    explicit BackendSelector(const data::ConstElementPtr& access_map);

    static const BackendSelector& UNSPEC();

    bool amUnspecified() const;

    Type getBackendType() const {
        return (backend_type_);
    }

    std::string getBackendHost() const {
        return (host_);
    }

    uint16_t getBackendPort() const {
        return (port_);
    }

    std::string toText() const;

    virtual data::ElementPtr toElement() const;

    static Type stringToBackendType(const std::string& type);

    static std::string backendTypeToString(const Type& type);

private:

    void validate() const;

    Type backend_type_;

    std::string host_;

    uint16_t port_;
};


} // end of namespace isc::db
} // end of namespace isc

#endif