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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,176 @@ | ||
| // Copyright 2023 PingCAP, Ltd. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| #include <Storages/Transaction/RegionCFDataBase.h> | ||
| #include <Storages/Transaction/RegionCFDataTrait.h> | ||
| #include <Storages/Transaction/TiKVRecordFormat.h> | ||
|
|
||
| namespace DB | ||
| { | ||
| namespace RecordKVFormat | ||
| { | ||
| // https://github.com/tikv/tikv/blob/master/components/txn_types/src/lock.rs | ||
| inline void decodeLockCfValue(DecodedLockCFValue & res) | ||
| { | ||
| const TiKVValue & value = *res.val; | ||
| const char * data = value.data(); | ||
| size_t len = value.dataSize(); | ||
|
|
||
| kvrpcpb::Op lock_type = kvrpcpb::Op_MIN; | ||
| switch (readUInt8(data, len)) | ||
| { | ||
| case LockType::Put: | ||
| lock_type = kvrpcpb::Op::Put; | ||
| break; | ||
| case LockType::Delete: | ||
| lock_type = kvrpcpb::Op::Del; | ||
| break; | ||
| case LockType::Lock: | ||
| lock_type = kvrpcpb::Op::Lock; | ||
| break; | ||
| case LockType::Pessimistic: | ||
| lock_type = kvrpcpb::Op::PessimisticLock; | ||
| break; | ||
| } | ||
| res.lock_type = lock_type; | ||
| res.primary_lock = readVarString<std::string_view>(data, len); | ||
| res.lock_version = readVarUInt(data, len); | ||
|
|
||
| if (len > 0) | ||
| { | ||
| res.lock_ttl = readVarUInt(data, len); | ||
| while (len > 0) | ||
| { | ||
| char flag = readUInt8(data, len); | ||
| switch (flag) | ||
| { | ||
| case SHORT_VALUE_PREFIX: | ||
| { | ||
| size_t str_len = readUInt8(data, len); | ||
| if (len < str_len) | ||
| throw Exception("content len shorter than short value len", ErrorCodes::LOGICAL_ERROR); | ||
| // no need short value | ||
| readRawString<std::nullptr_t>(data, len, str_len); | ||
| break; | ||
| }; | ||
| case MIN_COMMIT_TS_PREFIX: | ||
| { | ||
| res.min_commit_ts = readUInt64(data, len); | ||
| break; | ||
| } | ||
| case FOR_UPDATE_TS_PREFIX: | ||
| { | ||
| res.lock_for_update_ts = readUInt64(data, len); | ||
| break; | ||
| } | ||
| case TXN_SIZE_PREFIX: | ||
| { | ||
| res.txn_size = readUInt64(data, len); | ||
| break; | ||
| } | ||
| case ASYNC_COMMIT_PREFIX: | ||
| { | ||
| res.use_async_commit = true; | ||
| const auto * start = data; | ||
| UInt64 cnt = readVarUInt(data, len); | ||
| for (UInt64 i = 0; i < cnt; ++i) | ||
| { | ||
| readVarString<std::nullptr_t>(data, len); | ||
| } | ||
| const auto * end = data; | ||
| res.secondaries = {start, static_cast<size_t>(end - start)}; | ||
| break; | ||
| } | ||
| case ROLLBACK_TS_PREFIX: | ||
| { | ||
| UInt64 cnt = readVarUInt(data, len); | ||
| for (UInt64 i = 0; i < cnt; ++i) | ||
| { | ||
| readUInt64(data, len); | ||
| } | ||
| break; | ||
| } | ||
| case LAST_CHANGE_PREFIX: | ||
| { | ||
| // Used to accelerate TiKV MVCC scan, useless for TiFlash. | ||
| UInt64 last_change_ts = readUInt64(data, len); | ||
| UInt64 versions_to_last_change = readVarUInt(data, len); | ||
| UNUSED(last_change_ts); | ||
| UNUSED(versions_to_last_change); | ||
| break; | ||
| } | ||
| case TXN_SOURCE_PREFIX_FOR_LOCK: | ||
| { | ||
| // Used for CDC, useless for TiFlash. | ||
| UInt64 txn_source_prefic = readVarUInt(data, len); | ||
| UNUSED(txn_source_prefic); | ||
| break; | ||
| } | ||
| case PESSIMISTIC_LOCK_WITH_CONFLICT_PREFIX: | ||
| { | ||
| // https://github.com/pingcap/tidb/issues/43540 | ||
| break; | ||
| } | ||
| default: | ||
| { | ||
| std::string msg = std::string("invalid flag ") + flag + " in lock value " + value.toDebugString(); | ||
| throw Exception(msg, ErrorCodes::LOGICAL_ERROR); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| if (len != 0) | ||
| throw Exception("invalid lock value " + value.toDebugString(), ErrorCodes::LOGICAL_ERROR); | ||
| } | ||
|
|
||
| DecodedLockCFValue::DecodedLockCFValue(std::shared_ptr<const TiKVKey> key_, std::shared_ptr<const TiKVValue> val_) | ||
| : key(std::move(key_)) | ||
| , val(std::move(val_)) | ||
| { | ||
| decodeLockCfValue(*this); | ||
| } | ||
|
|
||
| void DecodedLockCFValue::intoLockInfo(kvrpcpb::LockInfo & res) const | ||
| { | ||
| res.set_lock_type(lock_type); | ||
| res.set_primary_lock(primary_lock.data(), primary_lock.size()); | ||
| res.set_lock_version(lock_version); | ||
| res.set_lock_ttl(lock_ttl); | ||
| res.set_min_commit_ts(min_commit_ts); | ||
| res.set_lock_for_update_ts(lock_for_update_ts); | ||
| res.set_txn_size(txn_size); | ||
| res.set_use_async_commit(use_async_commit); | ||
| res.set_key(decodeTiKVKey(*key)); | ||
|
|
||
| if (use_async_commit) | ||
| { | ||
| const auto * data = secondaries.data(); | ||
| auto len = secondaries.size(); | ||
| UInt64 cnt = readVarUInt(data, len); | ||
| for (UInt64 i = 0; i < cnt; ++i) | ||
| { | ||
| res.add_secondaries(readVarString<std::string>(data, len)); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| std::unique_ptr<kvrpcpb::LockInfo> DecodedLockCFValue::intoLockInfo() const | ||
| { | ||
| auto res = std::make_unique<kvrpcpb::LockInfo>(); | ||
| intoLockInfo(*res); | ||
| return res; | ||
| } | ||
|
|
||
| } // namespace RecordKVFormat | ||
| } // namespace DB |
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