d6c6e05727
Co-authored-by: zhjc1124 <zhjc1124@gmail.com> Co-authored-by: BinChenn <binchenn.bc@gmail.com> Co-authored-by: oceanoverflow <oceanoverflow@gmail.com>
66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
/**
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* Copyright (c) 2023 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_LOG_FETCHER_LOG_HANDLER_H_
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#define OCEANBASE_LOG_FETCHER_LOG_HANDLER_H_
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#include "share/ob_ls_id.h" // ObLSID
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#include "ob_log_fetcher_switch_info.h" // KickOutInfo
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#include "ob_log_fetch_stat_info.h" // TransStatInfo
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namespace oceanbase
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{
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namespace logfetcher
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{
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class ILogFetcherHandler
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{
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public:
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// Implementation for handling the LogGroupEntry
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//
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// @param [in] tenant_id Tenant ID
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// @param [in] ls_id LS ID
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// @param [in] proposal_id proposal id
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// @param [in] group_start_lsn LogGroupEntry start LSN
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// @param [in] group_entry LogGroupEntry Log
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// @param [in] buffer Buffer of the LogGroupEntry Log
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// @param [in] ls_fetch_ctx LogFetcher LSCtx
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// @param [out] KickOutInfo Set the reason for the failure, and then LogFetcher will switch the machine
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// and try fetching log for high availability and real-time.
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// @param [out] StatInfo Some statistics
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//
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// @retval OB_SUCCESS Handle the GroupLogEntry successfully
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// @retval OB_NEED_RETRY For Physical standby, return OB_NEED_RETRY uniformly when the handle group entry failed.
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// such as:
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// OB_NOT_MASTER(the leader of LS is switched)
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// OB_EAGAIN(the sliding window is full)
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// OB_LOG_OUTOF_DISK_SPACE
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//
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// @retval OB_IN_STOP_STATE Stop and exit
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// @retval Other error codes Fail
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virtual int handle_group_entry(
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const uint64_t tenant_id,
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const share::ObLSID &ls_id,
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const int64_t proposal_id,
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const palf::LSN &group_start_lsn,
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const palf::LogGroupEntry &group_entry,
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const char *buffer,
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void *ls_fetch_ctx,
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KickOutInfo &kick_out_info,
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TransStatInfo &tsi,
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volatile bool &stop_flag) = 0;
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};
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} // namespace logfetcher
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} // namespace oceanbase
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#endif
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