ClickHouse/src/Interpreters/FilesystemCacheLog.h

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#pragma once
#include <Core/NamesAndAliases.h>
#include <Core/NamesAndTypes.h>
#include <Core/Settings.h>
#include <DataTypes/DataTypeArray.h>
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#include <DataTypes/DataTypeNumberBase.h>
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#include <DataTypes/DataTypeTuple.h>
#include <Interpreters/SystemLog.h>
#include <Interpreters/TransactionVersionMetadata.h>
namespace DB
{
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struct FilesystemCacheLogElement
{
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enum class CacheType
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{
READ_FROM_CACHE,
READ_FROM_FS_AND_DOWNLOADED_TO_CACHE,
READ_FROM_FS_BYPASSING_CACHE,
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WRITE_THROUGH_CACHE,
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};
time_t event_time{};
String query_id;
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String source_file_path;
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std::pair<size_t, size_t> file_segment_range{};
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std::pair<size_t, size_t> requested_range{};
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CacheType cache_type{};
std::string file_segment_key{};
size_t file_segment_offset = 0;
size_t file_segment_size = 0;
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bool read_from_cache_attempted;
String read_buffer_id{};
std::shared_ptr<ProfileEvents::Counters::Snapshot> profile_counters = nullptr;
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static std::string name() { return "FilesystemCacheLog"; }
static NamesAndTypesList getNamesAndTypes();
static NamesAndAliases getNamesAndAliases() { return {}; }
void appendToBlock(MutableColumns & columns) const;
static const char * getCustomColumnList() { return nullptr; }
};
class FilesystemCacheLog : public SystemLog<FilesystemCacheLogElement>
{
using SystemLog<FilesystemCacheLogElement>::SystemLog;
};
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}