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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "configvalue.h"
namespace config {
/**
* A config update contains a config value, and metadata saying if the value is
* changed or not.
*/
class ConfigUpdate
{
public:
ConfigUpdate(ConfigValue value, bool changed, int64_t generation);
ConfigUpdate(const ConfigUpdate &) = delete;
ConfigUpdate & operator = (const ConfigUpdate &) = delete;
~ConfigUpdate();
const ConfigValue & getValue() const noexcept { return _value; }
bool hasChanged() const noexcept { return _hasChanged; }
int64_t getGeneration() const noexcept { return _generation; }
void merge(const ConfigUpdate & b) noexcept { _hasChanged = _hasChanged || b.hasChanged(); }
private:
ConfigValue _value;
bool _hasChanged;
int64_t _generation;
};
} // namespace config
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