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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 "iconfigholder.h"
#include <mutex>
#include <condition_variable>
namespace config {
/**
* A config holder contains the latest config object of a subscription.
*/
class ConfigHolder : public IConfigHolder
{
public:
ConfigHolder();
~ConfigHolder() override;
std::unique_ptr<ConfigUpdate> provide() override;
void handle(std::unique_ptr<ConfigUpdate> update) override;
bool wait_until(vespalib::steady_time deadline) override;
bool poll() override;
void close() override;
public:
std::mutex _lock;
std::condition_variable _cond;
std::unique_ptr<ConfigUpdate> _current;
};
} // namespace config
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