95 lines
2.9 KiB
C++
95 lines
2.9 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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#define USING_LOG_PREFIX STORAGE
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#include "ob_pg_meta_checkpoint_reader.h"
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#include "storage/ob_partition_service.h"
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using namespace oceanbase::common;
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using namespace oceanbase::blocksstable;
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using namespace oceanbase::storage;
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ObPGMetaCheckpointReader::ObPGMetaCheckpointReader() : is_inited_(false), reader_(), file_handle_(), pg_mgr_(nullptr)
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{}
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int ObPGMetaCheckpointReader::init(
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const blocksstable::MacroBlockId& entry_block, ObStorageFileHandle& file_handle, ObPartitionMetaRedoModule& pg_mgr)
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{
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int ret = OB_SUCCESS;
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if (OB_UNLIKELY(is_inited_)) {
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ret = OB_INIT_TWICE;
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LOG_WARN("ObPGMetaCheckpointReader has not been inited", K(ret));
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} else if (OB_UNLIKELY(!entry_block.is_valid() || !file_handle.is_valid())) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("invalid arguments", K(ret), K(entry_block), K(file_handle));
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} else if (OB_FAIL(reader_.init(entry_block, file_handle))) {
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LOG_WARN("fail to init ObPGMetaItemReader", K(ret));
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} else if (OB_FAIL(file_handle_.assign(file_handle))) {
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LOG_WARN("fail to assign file handle", K(ret));
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} else {
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pg_mgr_ = &pg_mgr;
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is_inited_ = true;
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}
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return ret;
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}
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int ObPGMetaCheckpointReader::read_checkpoint()
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{
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int ret = OB_SUCCESS;
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if (OB_UNLIKELY(!is_inited_)) {
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ret = OB_NOT_INIT;
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LOG_WARN("ObPGMetaCheckpointReader has not been inited", K(ret));
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} else {
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ObPGMetaItemBuffer item;
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int64_t pos = 0;
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while (OB_SUCC(ret)) {
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pos = 0;
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if (OB_FAIL(read_item(item))) {
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if (OB_ITER_END != ret) {
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LOG_WARN("fail to get next item", K(ret));
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} else {
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ret = OB_SUCCESS;
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break;
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}
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} else if (OB_FAIL(pg_mgr_->load_partition(item.buf_, item.buf_len_, pos, file_handle_))) {
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LOG_WARN("fail to load partition", K(ret));
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}
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}
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}
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return ret;
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}
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int ObPGMetaCheckpointReader::read_item(ObPGMetaItemBuffer& item)
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{
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int ret = OB_SUCCESS;
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if (OB_UNLIKELY(!is_inited_)) {
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ret = OB_NOT_INIT;
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LOG_WARN("ObPGMetaCheckpointReader has not been inited", K(ret));
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} else if (OB_FAIL(reader_.get_next_item(item))) {
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LOG_WARN("fail to get next item", K(ret));
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}
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return ret;
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}
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void ObPGMetaCheckpointReader::reset()
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{
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is_inited_ = false;
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reader_.reset();
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file_handle_.reset();
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}
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ObIArray<MacroBlockId>& ObPGMetaCheckpointReader::get_meta_block_list()
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{
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return reader_.get_meta_block_list();
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}
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