139 lines
3.8 KiB
C++
139 lines
3.8 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#ifndef OB_STORAGE_SUPER_BLOCK_STRUCT_H_
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#define OB_STORAGE_SUPER_BLOCK_STRUCT_H_
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#include "common/log/ob_log_cursor.h"
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#include "storage/blocksstable/ob_macro_block_id.h"
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namespace oceanbase
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{
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namespace storage
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{
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struct ObServerSuperBlockHeader final
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{
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public:
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static const int32_t SERVER_SUPER_BLOCK_VERSION = 1;
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static const int64_t OB_MAX_SUPER_BLOCK_SIZE = 64 * 1024;
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ObServerSuperBlockHeader();
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~ObServerSuperBlockHeader() = default;
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bool is_valid() const;
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void reset();
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TO_STRING_KV(K_(version), K_(magic), K_(body_size), K_(body_crc));
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NEED_SERIALIZE_AND_DESERIALIZE;
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int32_t version_;
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int32_t magic_;
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int32_t body_size_;
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int32_t body_crc_;
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};
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struct ServerSuperBlockBody final
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{
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public:
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static const int64_t SUPER_BLOCK_BODY_VERSION = 1;
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int64_t create_timestamp_; // create timestamp
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int64_t modify_timestamp_; // last modified timestamp
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int64_t macro_block_size_;
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int64_t total_macro_block_count_;
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int64_t total_file_size_;
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common::ObLogCursor replay_start_point_;
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blocksstable::MacroBlockId tenant_meta_entry_;
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ServerSuperBlockBody();
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bool is_valid() const;
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void reset();
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TO_STRING_KV("Type", "ObServerSuperBlockBody",
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K_(create_timestamp),
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K_(modify_timestamp),
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K_(macro_block_size),
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K_(total_macro_block_count),
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K_(total_file_size),
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K_(replay_start_point),
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K_(tenant_meta_entry));
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OB_UNIS_VERSION(SUPER_BLOCK_BODY_VERSION);
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};
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struct ObServerSuperBlock final
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{
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public:
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ObServerSuperBlock();
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~ObServerSuperBlock() = default;
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// represents an entry to an empty linked list， distinguished with the invalid macro block id
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static const blocksstable::MacroBlockId EMPTY_LIST_ENTRY_BLOCK;
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bool is_valid() const;
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void reset();
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NEED_SERIALIZE_AND_DESERIALIZE;
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TO_STRING_KV(K_(header), K_(body));
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OB_INLINE int64_t get_macro_block_size() const
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{
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return body_.macro_block_size_;
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}
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OB_INLINE int64_t get_total_macro_block_count() const
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{
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return body_.total_macro_block_count_;
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}
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OB_INLINE int64_t get_super_block_size() const
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{
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return header_.get_serialize_size() + body_.get_serialize_size();
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}
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int construct_header();
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int format_startup_super_block(const int64_t macro_block_size, const int64_t data_file_size);
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ObServerSuperBlockHeader header_;
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ServerSuperBlockBody body_;
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};
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struct ObTenantSuperBlock final
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{
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public:
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static const uint64_t HIDDEN_FLAG_MASK = 0x01;
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static const int64_t TENANT_SUPER_BLOCK_VERSION = 1;
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ObTenantSuperBlock();
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ObTenantSuperBlock(const uint64_t tenant_id, const bool is_hidden = false);
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~ObTenantSuperBlock() = default;
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void reset();
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bool is_valid() const;
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TO_STRING_KV(K_(tenant_id),
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K_(replay_start_point),
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K_(ls_meta_entry),
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K_(tablet_meta_entry),
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K_(is_hidden));
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OB_UNIS_VERSION(TENANT_SUPER_BLOCK_VERSION);
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public:
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uint64_t tenant_id_;
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common::ObLogCursor replay_start_point_;
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blocksstable::MacroBlockId ls_meta_entry_;
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blocksstable::MacroBlockId tablet_meta_entry_;
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bool is_hidden_;
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};
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#define IS_EMPTY_BLOCK_LIST(entry_block) (entry_block == oceanbase::storage::ObServerSuperBlock::EMPTY_LIST_ENTRY_BLOCK)
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} // end namespace storage
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} // end namespace oceanbase
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#endif // OB_STORAGE_SUPER_BLOCK_STRUCT_H_
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