72 lines
2.1 KiB
C++
72 lines
2.1 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 OCEANBASE_STORAGE_OB_COMMON_ID_UTILS_H_
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#define OCEANBASE_STORAGE_OB_COMMON_ID_UTILS_H_
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#include "share/ob_common_id.h" // ObCommonID
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#include "share/ob_max_id_fetcher.h" // ObMaxIdType, ObMaxIdFetcher
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namespace oceanbase
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{
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namespace common
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{
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class ObMySQLProxy;
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}
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namespace share
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{
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enum ObMaxIdType;
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}
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namespace storage
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{
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// Utils for ObCommonID
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class ObCommonIDUtils
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{
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public:
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// Use ObUniqueIDService to generate Unique ID for ObCommonID in target tenant.
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//
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// NOTE: ID is unique, but not monotonic.
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//
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//
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// @param [in] tenant_id target tenant id
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// @param [out] id generated ID
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//
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// @return
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// - OB_INVALID_ARGUMENT tenant_id is invalid or not matched with MTL_ID
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static int gen_unique_id(const uint64_t tenant_id, share::ObCommonID &id);
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// Send rpc to the leader of sys LS of target tenant to execute gen_unique_id.
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//
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// Use this one when target tenant doesn't exist on current machine.
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static int gen_unique_id_by_rpc(const uint64_t tenant_id, share::ObCommonID &id);
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// Use ObMaxIdFetcher to generate monotonically increasing ID for ObCommonID in target tenant
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//
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// @param [in] tenant_id target tenant id
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// @param [in] id_type id type for ObMaxIdFetcher
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// @param [in] proxy sql proxy
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// @param [out] id generated monotonically increasing ID
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static int gen_monotonic_id(const uint64_t tenant_id,
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const share::ObMaxIdType id_type,
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const int32_t group_id,
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common::ObMySQLProxy &proxy,
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share::ObCommonID &id);
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};
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}
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}
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#endif /* OCEANBASE_STORAGE_OB_COMMON_ID_UTILS_H_ */
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