122 lines
2.7 KiB
C++
122 lines
2.7 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_SIMPLE_OB_STORAGE_LOG_H
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#define OCEANBASE_SIMPLE_OB_STORAGE_LOG_H
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#define USING_LOG_PREFIX STORAGE_REDO
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#include "lib/list/ob_list.h"
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#include "lib/file/file_directory_utils.h"
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#include "lib/file/ob_file.h"
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#include "lib/random/ob_random.h"
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#include "lib/allocator/ob_mod_define.h"
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#include "storage/slog/ob_storage_log_struct.h"
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namespace oceanbase
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{
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using namespace common;
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namespace storage
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{
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class SimpleObSlog : public ObIBaseStorageLogEntry
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{
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public:
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SimpleObSlog();
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SimpleObSlog(const int64_t data_len, const char content);
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~SimpleObSlog();
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bool operator == (const SimpleObSlog &slog);
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bool is_valid() const;
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void init(const int64_t data_len_, const char content);
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void destroy();
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void set(const int64_t data_len, const char content);
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char *buf_;
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int64_t len_;
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TO_STRING_EMPTY();
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NEED_SERIALIZE_AND_DESERIALIZE;
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};
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SimpleObSlog::SimpleObSlog()
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: buf_(nullptr), len_(0)
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{
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}
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SimpleObSlog::SimpleObSlog(const int64_t data_len, const char content)
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{
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buf_ = new char[data_len];
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MEMSET(buf_, content, data_len);
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len_ = data_len;
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}
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SimpleObSlog::~SimpleObSlog()
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{
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if (nullptr != buf_) {
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delete[] buf_;
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buf_ = nullptr;
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}
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}
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void SimpleObSlog::set(const int64_t data_len, const char content)
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{
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if (buf_ == nullptr && len_ == 0) {
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len_ = data_len;
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buf_ = new char[data_len];
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MEMSET(buf_, content, data_len);
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}
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}
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bool SimpleObSlog::operator == (const SimpleObSlog &slog)
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{
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return 0 == STRCMP(buf_, slog.buf_) && len_ == slog.len_;
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}
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bool SimpleObSlog::is_valid() const
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{
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return true;
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}
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DEFINE_SERIALIZE(SimpleObSlog)
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{
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int ret = OB_SUCCESS;
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if (nullptr == buf || buf_len <= 0 || pos < 0) {
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ret = OB_INVALID_ARGUMENT;
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STORAGE_REDO_LOG(WARN, "Invalid argument.", K(buf_len), K(pos));
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} else if (pos + len_ > buf_len) {
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ret = OB_BUF_NOT_ENOUGH;
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STORAGE_REDO_LOG(WARN, "Buffer is not enough.", K_(len), K(pos), K(buf_len));
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} else {
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MEMCPY(buf + pos, buf_, len_);
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pos += len_;
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}
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return ret;
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}
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DEFINE_DESERIALIZE(SimpleObSlog)
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{
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UNUSEDx(buf, data_len, pos);
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return OB_NOT_SUPPORTED;
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}
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DEFINE_GET_SERIALIZE_SIZE(SimpleObSlog)
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{
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return len_;
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}
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}
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}
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#endif |