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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 <vespa/vespalib/util/time.h>
#include <memory>
namespace proton {
class DocumentSubDBReconfig;
/**
* Class representing the result of the prepare step of a DocumentDB reconfig.
*
* The reconfig is performed in three steps:
* 1) Prepare:
* Based on the config that is changed, new components are instantiated in each subdb.
* This can be costly and is done by the proton reconfigure thread.
*
* 2) Complete prepare:
* Docid limit and serial number are used to complete the prepared reconfig.
* This is done by the DocumentDB master write thread.
*
* 3) Apply:
* The new components are swapped with the old ones.
* This is done by the DocumentDB master write thread.
*/
class DocumentDBReconfig {
private:
vespalib::steady_time _start_time;
std::unique_ptr<DocumentSubDBReconfig> _ready_reconfig;
std::unique_ptr<DocumentSubDBReconfig> _not_ready_reconfig;
public:
DocumentDBReconfig(vespalib::steady_time start_time,
std::unique_ptr<DocumentSubDBReconfig> ready_reconfig_in,
std::unique_ptr<DocumentSubDBReconfig> not_ready_reconfig_in);
~DocumentDBReconfig();
vespalib::steady_time start_time() const noexcept { return _start_time; }
const DocumentSubDBReconfig& ready_reconfig() const noexcept { return *_ready_reconfig; }
DocumentSubDBReconfig& ready_reconfig() noexcept { return *_ready_reconfig; }
const DocumentSubDBReconfig& not_ready_reconfig() const noexcept { return *_not_ready_reconfig; }
DocumentSubDBReconfig& not_ready_reconfig() noexcept { return *_not_ready_reconfig; }
};
}
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