74 lines
2.5 KiB
C++
74 lines
2.5 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_tenant_config_meta_checkpoint_reader.h"
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#include "share/ob_unit_getter.h"
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#include "observer/omt/ob_tenant_node_balancer.h"
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#include "ob_tenant_config_mgr.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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ObTenantConfigMetaCheckpointReader::ObTenantConfigMetaCheckpointReader() : is_inited_(false), reader_()
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{}
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int ObTenantConfigMetaCheckpointReader::init(
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const blocksstable::MacroBlockId& entry_block, blocksstable::ObStorageFileHandle& file_handle)
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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("ObTenantConfigMetaCheckpointReader has already 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 reader", K(ret));
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} else {
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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 ObTenantConfigMetaCheckpointReader::read_checkpoint()
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{
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int ret = OB_SUCCESS;
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ObPGMetaItemBuffer item;
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if (OB_UNLIKELY(!is_inited_)) {
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ret = OB_NOT_INIT;
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LOG_WARN("ObTenantConfigMetaCheckpointReader has not been inited", K(ret));
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} else if (OB_FAIL(reader_.get_next_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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}
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} else {
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share::TenantUnits tenant_units;
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int64_t pos = 0;
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if (OB_FAIL(tenant_units.deserialize(item.buf_, item.buf_len_, pos))) {
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LOG_WARN("fail to deserialize tenant units", K(ret));
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} else if (OB_FAIL(ObTenantConfigMgr::get_instance().load_tenant_units(tenant_units))) {
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LOG_WARN("fail to load tenant units", K(ret));
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}
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}
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return ret;
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}
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ObIArray<MacroBlockId>& ObTenantConfigMetaCheckpointReader::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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