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clio/src/etl/CacheLoaderSettings.hpp
2024-03-14 16:42:57 +00:00

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//------------------------------------------------------------------------------
/*
This file is part of clio: https://github.com/XRPLF/clio
Copyright (c) 2024, the clio developers.
Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#pragma once
#include "util/config/Config.hpp"
#include <cstddef>
namespace etl {
/**
* @brief Settings for the cache loader
*/
struct CacheLoaderSettings {
/** @brief Ways to load the cache */
enum class LoadStyle { ASYNC, SYNC, NONE };
size_t numCacheDiffs = 32; /**< number of diffs to use to generate cursors */
size_t numCacheMarkers = 48; /**< number of markers to use at one time to traverse the ledger */
size_t cachePageFetchSize = 512; /**< number of ledger objects to fetch concurrently per marker */
size_t numThreads = 2; /**< number of threads to use for loading cache */
size_t numCacheCursorsFromDiff = 0; /**< number of cursors to fetch from diff */
size_t numCacheCursorsFromAccount = 0; /**< number of cursors to fetch from account_tx */
LoadStyle loadStyle = LoadStyle::ASYNC; /**< how to load the cache */
auto
operator<=>(CacheLoaderSettings const&) const = default;
/** @returns True if the load style is SYNC; false otherwise */
[[nodiscard]] bool
isSync() const;
/** @returns True if the load style is ASYNC; false otherwise */
[[nodiscard]] bool
isAsync() const;
/** @returns True if the cache is disabled; false otherwise */
[[nodiscard]] bool
isDisabled() const;
};
/**
* @brief Create a CacheLoaderSettings object from a Config object
*
* @param config The configuration object
* @returns The CacheLoaderSettings object
*/
[[nodiscard]] CacheLoaderSettings
make_CacheLoaderSettings(util::Config const& config);
} // namespace etl