86 lines
3.3 KiB
C++
86 lines
3.3 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_CLOG_OB_LOG_FETCHER_IMPL_
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#define OCEANBASE_CLOG_OB_LOG_FETCHER_IMPL_
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//#include "lib/allocator/ob_qsync.h"
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#include "ob_log_define.h"
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#include "ob_log_reader_interface.h"
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#include "ob_log_line_cache.h" // ObLogLineCache
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#include "storage/ob_storage_log_type.h"
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#include "share/ob_encryption_util.h"
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namespace oceanbase {
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namespace storage {
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class ObIPartitionGroup;
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}
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namespace clog {
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class ObILogEngine;
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struct ObReadParam;
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class ObLogCursorExt;
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} // namespace clog
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namespace logservice {
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class ObLogFetcherImpl {
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public:
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ObLogFetcherImpl() : is_inited_(false), skip_hotcache_(false), log_engine_(NULL), line_cache_(NULL)
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{}
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~ObLogFetcherImpl()
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{
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destroy();
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}
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int init(clog::ObLogLineCache& line_cache, clog::ObILogEngine* log_engine);
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void destroy()
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{
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if (is_inited_) {
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is_inited_ = false;
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skip_hotcache_ = false;
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line_cache_ = NULL;
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log_engine_ = NULL;
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}
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}
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protected:
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int fetch_decrypted_log_entry_(const common::ObPartitionKey& pkey, const clog::ObLogCursorExt& cursor_ext,
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char* log_buf, const int64_t buf_size, const int64_t end_tstamp, clog::ObReadCost& read_cost,
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bool& fetch_log_from_hot_cache, int64_t& log_entry_size);
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int fetch_decrypted_log_entry_(const common::ObPartitionKey& pkey, const clog::ObReadParam& param, char* log_buf,
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const int64_t buf_size, const int64_t end_tstamp, clog::ObReadCost& read_cost, bool& fetch_log_from_hot_cache,
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int64_t& log_entry_size);
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int fetch_log_entry_(const common::ObPartitionKey& pkey, const clog::ObReadParam& param, char* log_buf,
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const int64_t buf_size, const int64_t end_tstamp, clog::ObReadCost& read_cost, bool& fetch_log_from_hot_cache,
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int64_t& log_entry_size);
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int read_data_from_line_cache(clog::file_id_t file_id, clog::offset_t offset, int64_t request_size, char* buf,
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const int64_t end_tstamp, clog::ObReadCost& read_cost);
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int read_data_from_line_cache_(const clog::file_id_t file_id, const clog::offset_t offset, const int64_t read_size,
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char* buf, int64_t& pos, const int64_t end_tstamp, clog::ObReadCost& read_cost);
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int read_line_data_(
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const char* line, const clog::offset_t offset_in_line, char* buf, int64_t& pos, const int64_t read_size);
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int load_line_data_(char* line, const clog::file_id_t file_id, const clog::offset_t offset, clog::ObReadCost& cost);
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// Read the serialized content of the decompressed log entry
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int read_uncompressed_data_from_line_cache_(clog::file_id_t file_id, clog::offset_t offset, int64_t request_size,
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char* buf, int64_t buf_size, int64_t& log_entry_size, const int64_t end_tstamp, clog::ObReadCost& read_cost);
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protected:
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bool is_inited_;
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bool skip_hotcache_; // use for test line cache
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clog::ObILogEngine* log_engine_;
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clog::ObLogLineCache* line_cache_;
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};
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} // namespace logservice
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} // namespace oceanbase
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#endif
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