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268 lines
8.4 KiB
C++
268 lines
8.4 KiB
C++
#include <Storages/StorageSet.h>
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#include <Storages/StorageFactory.h>
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#include <IO/ReadBufferFromFile.h>
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#include <Compression/CompressedReadBuffer.h>
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#include <IO/WriteBufferFromFile.h>
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#include <Compression/CompressedWriteBuffer.h>
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#include <Formats/NativeWriter.h>
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#include <Formats/NativeReader.h>
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#include <QueryPipeline/ProfileInfo.h>
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#include <Disks/IDisk.h>
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#include <Common/formatReadable.h>
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#include <Common/StringUtils/StringUtils.h>
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#include <Interpreters/Set.h>
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#include <Interpreters/Context.h>
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#include <Processors/Sinks/SinkToStorage.h>
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#include <Parsers/ASTCreateQuery.h>
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#include <filesystem>
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namespace fs = std::filesystem;
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
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}
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namespace ErrorCodes
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{
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extern const int INCORRECT_FILE_NAME;
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}
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class SetOrJoinSink : public SinkToStorage, WithContext
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{
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public:
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SetOrJoinSink(
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ContextPtr ctx, StorageSetOrJoinBase & table_, const StorageMetadataPtr & metadata_snapshot_,
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const String & backup_path_, const String & backup_tmp_path_,
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const String & backup_file_name_, bool persistent_);
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String getName() const override { return "SetOrJoinSink"; }
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void consume(Chunk chunk) override;
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void onFinish() override;
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private:
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StorageSetOrJoinBase & table;
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StorageMetadataPtr metadata_snapshot;
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String backup_path;
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String backup_tmp_path;
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String backup_file_name;
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std::unique_ptr<WriteBufferFromFileBase> backup_buf;
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CompressedWriteBuffer compressed_backup_buf;
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NativeWriter backup_stream;
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bool persistent;
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};
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SetOrJoinSink::SetOrJoinSink(
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ContextPtr ctx,
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StorageSetOrJoinBase & table_,
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const StorageMetadataPtr & metadata_snapshot_,
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const String & backup_path_,
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const String & backup_tmp_path_,
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const String & backup_file_name_,
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bool persistent_)
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: SinkToStorage(metadata_snapshot_->getSampleBlock())
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, WithContext(ctx)
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, table(table_)
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, metadata_snapshot(metadata_snapshot_)
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, backup_path(backup_path_)
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, backup_tmp_path(backup_tmp_path_)
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, backup_file_name(backup_file_name_)
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, backup_buf(table_.disk->writeFile(fs::path(backup_tmp_path) / backup_file_name))
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, compressed_backup_buf(*backup_buf)
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, backup_stream(compressed_backup_buf, 0, metadata_snapshot->getSampleBlock())
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, persistent(persistent_)
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{
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}
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void SetOrJoinSink::consume(Chunk chunk)
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{
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/// Sort columns in the block. This is necessary, since Set and Join count on the same column order in different blocks.
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Block sorted_block = getHeader().cloneWithColumns(chunk.detachColumns()).sortColumns();
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table.insertBlock(sorted_block, getContext());
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if (persistent)
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backup_stream.write(sorted_block);
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}
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void SetOrJoinSink::onFinish()
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{
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table.finishInsert();
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if (persistent)
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{
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backup_stream.flush();
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compressed_backup_buf.next();
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backup_buf->next();
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backup_buf->finalize();
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table.disk->replaceFile(fs::path(backup_tmp_path) / backup_file_name, fs::path(backup_path) / backup_file_name);
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}
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}
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SinkToStoragePtr StorageSetOrJoinBase::write(const ASTPtr & /*query*/, const StorageMetadataPtr & metadata_snapshot, ContextPtr context)
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{
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UInt64 id = ++increment;
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return std::make_shared<SetOrJoinSink>(
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context, *this, metadata_snapshot, path, fs::path(path) / "tmp/", toString(id) + ".bin", persistent);
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}
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StorageSetOrJoinBase::StorageSetOrJoinBase(
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DiskPtr disk_,
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const String & relative_path_,
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const StorageID & table_id_,
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const ColumnsDescription & columns_,
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const ConstraintsDescription & constraints_,
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const String & comment,
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bool persistent_)
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: IStorage(table_id_), disk(disk_), persistent(persistent_)
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{
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StorageInMemoryMetadata storage_metadata;
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storage_metadata.setColumns(columns_);
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storage_metadata.setConstraints(constraints_);
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storage_metadata.setComment(comment);
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setInMemoryMetadata(storage_metadata);
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if (relative_path_.empty())
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throw Exception("Join and Set storages require data path", ErrorCodes::INCORRECT_FILE_NAME);
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path = relative_path_;
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}
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StorageSet::StorageSet(
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DiskPtr disk_,
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const String & relative_path_,
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const StorageID & table_id_,
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const ColumnsDescription & columns_,
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const ConstraintsDescription & constraints_,
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const String & comment,
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bool persistent_)
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: StorageSetOrJoinBase{disk_, relative_path_, table_id_, columns_, constraints_, comment, persistent_}
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, set(std::make_shared<Set>(SizeLimits(), false, true))
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{
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Block header = getInMemoryMetadataPtr()->getSampleBlock();
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header = header.sortColumns();
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set->setHeader(header.getColumnsWithTypeAndName());
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restore();
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}
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void StorageSet::insertBlock(const Block & block, ContextPtr) { set->insertFromBlock(block.getColumnsWithTypeAndName()); }
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void StorageSet::finishInsert() { set->finishInsert(); }
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size_t StorageSet::getSize(ContextPtr) const { return set->getTotalRowCount(); }
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std::optional<UInt64> StorageSet::totalRows(const Settings &) const { return set->getTotalRowCount(); }
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std::optional<UInt64> StorageSet::totalBytes(const Settings &) const { return set->getTotalByteCount(); }
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void StorageSet::truncate(const ASTPtr &, const StorageMetadataPtr & metadata_snapshot, ContextPtr, TableExclusiveLockHolder &)
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{
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disk->removeRecursive(path);
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disk->createDirectories(path);
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disk->createDirectories(fs::path(path) / "tmp/");
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Block header = metadata_snapshot->getSampleBlock();
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header = header.sortColumns();
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increment = 0;
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set = std::make_shared<Set>(SizeLimits(), false, true);
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set->setHeader(header.getColumnsWithTypeAndName());
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}
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void StorageSetOrJoinBase::restore()
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{
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if (!disk->exists(fs::path(path) / "tmp/"))
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{
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disk->createDirectories(fs::path(path) / "tmp/");
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return;
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}
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static const char * file_suffix = ".bin";
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static const auto file_suffix_size = strlen(".bin");
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for (auto dir_it{disk->iterateDirectory(path)}; dir_it->isValid(); dir_it->next())
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{
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const auto & name = dir_it->name();
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const auto & file_path = dir_it->path();
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if (disk->isFile(file_path)
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&& endsWith(name, file_suffix)
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&& disk->getFileSize(file_path) > 0)
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{
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/// Calculate the maximum number of available files with a backup to add the following files with large numbers.
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UInt64 file_num = parse<UInt64>(name.substr(0, name.size() - file_suffix_size));
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if (file_num > increment)
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increment = file_num;
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restoreFromFile(dir_it->path());
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}
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}
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}
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void StorageSetOrJoinBase::restoreFromFile(const String & file_path)
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{
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ContextPtr ctx = nullptr;
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auto backup_buf = disk->readFile(file_path);
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CompressedReadBuffer compressed_backup_buf(*backup_buf);
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NativeReader backup_stream(compressed_backup_buf, 0);
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ProfileInfo info;
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while (Block block = backup_stream.read())
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{
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info.update(block);
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insertBlock(block, ctx);
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}
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finishInsert();
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/// TODO Add speed, compressed bytes, data volume in memory, compression ratio ... Generalize all statistics logging in project.
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LOG_INFO(&Poco::Logger::get("StorageSetOrJoinBase"), "Loaded from backup file {}. {} rows, {}. State has {} unique rows.",
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file_path, info.rows, ReadableSize(info.bytes), getSize(ctx));
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}
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void StorageSetOrJoinBase::rename(const String & new_path_to_table_data, const StorageID & new_table_id)
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{
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/// Rename directory with data.
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disk->replaceFile(path, new_path_to_table_data);
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path = new_path_to_table_data;
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renameInMemory(new_table_id);
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}
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void registerStorageSet(StorageFactory & factory)
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{
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factory.registerStorage("Set", [](const StorageFactory::Arguments & args)
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{
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if (!args.engine_args.empty())
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throw Exception(
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"Engine " + args.engine_name + " doesn't support any arguments (" + toString(args.engine_args.size()) + " given)",
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ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
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bool has_settings = args.storage_def->settings;
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SetSettings set_settings;
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if (has_settings)
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set_settings.loadFromQuery(*args.storage_def);
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DiskPtr disk = args.getContext()->getDisk(set_settings.disk);
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return StorageSet::create(
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disk, args.relative_data_path, args.table_id, args.columns, args.constraints, args.comment, set_settings.persistent);
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}, StorageFactory::StorageFeatures{ .supports_settings = true, });
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}
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}
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