rocksdb/util/write_batch_util.cc
Yu Zhang 11ebddb1d4 Add utils to use for handling user defined timestamp size record in WAL (#11451)
Summary:
Add a util method `HandleWriteBatchTimestampSizeDifference` to handle a `WriteBatch` read from WAL log when user-defined timestamp size record is written and read. Two check modes are added: `kVerifyConsistency` that just verifies the recorded timestamp size are consistent with the running ones. This mode is to be used by `db_impl_secondary` for opening a DB as secondary instance. It will also be used by `db_impl_open` before the user comparator switch support is added to make a column switch between enabling/disable UDT feature. The other mode `kReconcileInconsistency` will be used by `db_impl_open` later when user comparator can be changed.

Another change is to extract a method `CollectColumnFamilyIdsFromWriteBatch` in db_secondary_impl.h into its standalone util file so it can be shared.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11451

Test Plan:
```
make check
./udt_util_test
```

Reviewed By: ltamasi

Differential Revision: D45894386

Pulled By: jowlyzhang

fbshipit-source-id: b96790777f154cddab6d45d9ba2e5d20ebc6fe9d
2023-05-22 14:28:58 -07:00

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// Copyright (c) Meta Platforms, Inc. and affiliates.
//
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
#include "util/write_batch_util.h"
namespace ROCKSDB_NAMESPACE {
Status CollectColumnFamilyIdsFromWriteBatch(
const WriteBatch& batch, std::vector<uint32_t>* column_family_ids) {
assert(column_family_ids != nullptr);
column_family_ids->clear();
ColumnFamilyCollector handler;
Status s = batch.Iterate(&handler);
if (s.ok()) {
for (const auto& cf : handler.column_families()) {
column_family_ids->push_back(cf);
}
}
return s;
}
} // namespace ROCKSDB_NAMESPACE