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https://github.com/ClickHouse/ClickHouse.git
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74 lines
2.9 KiB
C++
74 lines
2.9 KiB
C++
#include "StorageSystemFilesystemCache.h"
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#include <DataTypes/DataTypeString.h>
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#include <DataTypes/DataTypesNumber.h>
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#include <DataTypes/DataTypeTuple.h>
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#include <Interpreters/Cache/FileCache.h>
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#include <Interpreters/Cache/FileSegment.h>
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#include <Interpreters/Cache/FileCacheFactory.h>
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#include <Interpreters/Context.h>
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#include <Disks/IDisk.h>
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namespace DB
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{
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NamesAndTypesList StorageSystemFilesystemCache::getNamesAndTypes()
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{
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return {
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{"cache_name", std::make_shared<DataTypeString>()},
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{"cache_base_path", std::make_shared<DataTypeString>()},
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{"cache_path", std::make_shared<DataTypeString>()},
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{"key", std::make_shared<DataTypeString>()},
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{"file_segment_range_begin", std::make_shared<DataTypeUInt64>()},
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{"file_segment_range_end", std::make_shared<DataTypeUInt64>()},
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{"size", std::make_shared<DataTypeUInt64>()},
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{"state", std::make_shared<DataTypeString>()},
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{"cache_hits", std::make_shared<DataTypeUInt64>()},
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{"references", std::make_shared<DataTypeUInt64>()},
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{"downloaded_size", std::make_shared<DataTypeUInt64>()},
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{"kind", std::make_shared<DataTypeString>()},
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{"unbound", std::make_shared<DataTypeNumber<UInt8>>()},
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};
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}
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StorageSystemFilesystemCache::StorageSystemFilesystemCache(const StorageID & table_id_)
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: IStorageSystemOneBlock(table_id_)
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{
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}
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void StorageSystemFilesystemCache::fillData(MutableColumns & res_columns, ContextPtr, const SelectQueryInfo &) const
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{
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auto caches = FileCacheFactory::instance().getAll();
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for (const auto & [cache_name, cache_data] : caches)
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{
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const auto & cache = cache_data->cache;
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auto file_segments = cache->getSnapshot();
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for (const auto & file_segment : *file_segments)
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{
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size_t i = 0;
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res_columns[i++]->insert(cache_name);
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res_columns[i++]->insert(cache->getBasePath());
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/// Do not use `file_segment->getPathInLocalCache` here because it will lead to nullptr dereference
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/// (because file_segments in getSnapshot doesn't have `cache` field set)
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res_columns[i++]->insert(cache->getPathInLocalCache(file_segment->key(), file_segment->offset(), file_segment->getKind()));
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res_columns[i++]->insert(file_segment->key().toString());
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const auto & range = file_segment->range();
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res_columns[i++]->insert(range.left);
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res_columns[i++]->insert(range.right);
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res_columns[i++]->insert(range.size());
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res_columns[i++]->insert(FileSegment::stateToString(file_segment->state()));
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res_columns[i++]->insert(file_segment->getHitsCount());
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res_columns[i++]->insert(file_segment->getRefCount());
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res_columns[i++]->insert(file_segment->getDownloadedSize(false));
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res_columns[i++]->insert(toString(file_segment->getKind()));
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res_columns[i++]->insert(file_segment->isUnbound());
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}
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}
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}
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}
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