2016-10-18 14:18:37 +00:00
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#pragma once
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2017-04-01 09:19:00 +00:00
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#include <Storages/IStorage.h>
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2021-10-02 07:13:14 +00:00
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#include <base/logger_useful.h>
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2016-10-18 14:18:37 +00:00
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2017-04-08 01:32:05 +00:00
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#include <atomic>
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2017-07-28 17:34:02 +00:00
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#include <shared_mutex>
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2021-10-02 07:13:14 +00:00
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#include <base/shared_ptr_helper.h>
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2017-04-08 01:32:05 +00:00
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2016-10-18 14:18:37 +00:00
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namespace DB
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{
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class StorageFileBlockInputStream;
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class StorageFileBlockOutputStream;
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2021-06-15 19:55:21 +00:00
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class StorageFile final : public shared_ptr_helper<StorageFile>, public IStorage
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2016-10-18 14:18:37 +00:00
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{
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2021-10-25 16:23:44 +00:00
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friend struct shared_ptr_helper<StorageFile>;
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friend class PartitionedStorageFileSink;
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2016-10-18 14:18:37 +00:00
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public:
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2019-07-09 15:40:21 +00:00
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std::string getName() const override { return "File"; }
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2017-04-01 07:20:54 +00:00
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2020-08-03 13:54:14 +00:00
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Pipe read(
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2017-04-01 07:20:54 +00:00
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const Names & column_names,
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2020-06-15 19:08:58 +00:00
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const StorageMetadataPtr & /*metadata_snapshot*/,
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2020-09-20 17:52:17 +00:00
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SelectQueryInfo & query_info,
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2021-04-10 23:33:54 +00:00
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ContextPtr context,
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2018-04-19 14:47:09 +00:00
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QueryProcessingStage::Enum processed_stage,
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2019-02-18 23:38:44 +00:00
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size_t max_block_size,
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2017-06-02 15:54:39 +00:00
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unsigned num_streams) override;
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2017-04-01 07:20:54 +00:00
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2021-07-23 14:25:35 +00:00
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SinkToStoragePtr write(
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2017-05-21 22:25:25 +00:00
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const ASTPtr & query,
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2020-06-15 19:08:58 +00:00
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const StorageMetadataPtr & /*metadata_snapshot*/,
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ContextPtr context) override;
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2017-04-01 07:20:54 +00:00
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2020-06-18 10:29:13 +00:00
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void truncate(
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const ASTPtr & /*query*/,
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const StorageMetadataPtr & /* metadata_snapshot */,
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ContextPtr /* context */,
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2020-06-18 16:10:47 +00:00
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TableExclusiveLockHolder &) override;
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2020-01-05 02:57:09 +00:00
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2020-04-07 14:05:51 +00:00
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void rename(const String & new_path_to_table_data, const StorageID & new_table_id) override;
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2019-11-11 14:28:28 +00:00
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2020-11-01 17:38:43 +00:00
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bool storesDataOnDisk() const override;
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2019-09-06 08:53:32 +00:00
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Strings getDataPaths() const override;
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2018-02-21 19:26:59 +00:00
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2021-04-10 23:33:54 +00:00
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struct CommonArguments : public WithContext
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2019-10-30 14:17:55 +00:00
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{
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StorageID table_id;
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std::string format_name;
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2020-11-05 11:28:20 +00:00
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std::optional<FormatSettings> format_settings;
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2020-11-02 07:50:38 +00:00
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std::string compression_method;
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const ColumnsDescription & columns;
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const ConstraintsDescription & constraints;
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2021-04-23 12:18:23 +00:00
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const String & comment;
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2019-10-30 14:17:55 +00:00
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};
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2020-04-28 10:38:57 +00:00
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NamesAndTypesList getVirtuals() const override;
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2020-04-27 13:55:30 +00:00
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2021-04-26 13:34:44 +00:00
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static Strings getPathsList(const String & table_path, const String & user_files_path, ContextPtr context, size_t & total_bytes_to_read);
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2020-10-14 12:19:29 +00:00
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2021-03-31 14:21:19 +00:00
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/// Check if the format is column-oriented.
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/// Is is useful because column oriented formats could effectively skip unknown columns
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/// So we can create a header of only required columns in read method and ask
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/// format to read only them. Note: this hack cannot be done with ordinary formats like TSV.
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2021-03-01 14:11:25 +00:00
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bool isColumnOriented() const;
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2021-10-25 16:23:44 +00:00
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bool supportsPartitionBy() const override { return true; }
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2016-10-28 17:38:32 +00:00
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protected:
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2020-01-31 13:12:11 +00:00
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friend class StorageFileSource;
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2021-07-23 14:25:35 +00:00
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friend class StorageFileSink;
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2016-10-18 14:18:37 +00:00
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2019-10-30 14:17:55 +00:00
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/// From file descriptor
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StorageFile(int table_fd_, CommonArguments args);
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/// From user's file
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2019-12-11 20:05:53 +00:00
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StorageFile(const std::string & table_path_, const std::string & user_files_path, CommonArguments args);
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2019-10-30 14:17:55 +00:00
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/// From table in database
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StorageFile(const std::string & relative_table_dir_path, CommonArguments args);
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2017-11-03 21:50:22 +00:00
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2016-10-18 14:18:37 +00:00
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private:
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2019-10-30 14:17:55 +00:00
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explicit StorageFile(CommonArguments args);
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2020-04-06 23:22:44 +00:00
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2017-04-01 07:20:54 +00:00
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std::string format_name;
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2020-11-05 11:28:20 +00:00
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// We use format settings from global context + CREATE query for File table
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// function -- in this case, format_settings is set.
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// For `file` table function, we use format settings from current user context,
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// in this case, format_settings is not set.
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std::optional<FormatSettings> format_settings;
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2016-10-28 17:38:32 +00:00
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2017-04-01 07:20:54 +00:00
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int table_fd = -1;
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2019-11-19 12:46:07 +00:00
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String compression_method;
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2016-10-18 14:18:37 +00:00
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2019-12-24 13:29:53 +00:00
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std::string base_path;
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2019-09-06 18:29:41 +00:00
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std::vector<std::string> paths;
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2019-07-21 13:15:04 +00:00
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2021-07-24 16:50:03 +00:00
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bool is_db_table = true; /// Table is stored in real database, not user's file
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bool use_table_fd = false; /// Use table_fd instead of path
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2016-10-25 13:49:07 +00:00
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2020-09-24 23:29:16 +00:00
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mutable std::shared_timed_mutex rwlock;
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2016-10-18 14:18:37 +00:00
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2020-05-30 21:57:37 +00:00
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Poco::Logger * log = &Poco::Logger::get("StorageFile");
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2021-04-26 13:34:44 +00:00
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2021-04-28 16:25:14 +00:00
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/// Total number of bytes to read (sums for multiple files in case of globs). Needed for progress bar.
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2021-04-26 13:34:44 +00:00
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size_t total_bytes_to_read = 0;
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2016-10-18 14:18:37 +00:00
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};
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}
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