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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/rocksdb/utilities/transactions/write_unprepared_txn_db.h | |
parent | Initial commit. (diff) | |
download | ceph-upstream/18.2.2.tar.xz ceph-upstream/18.2.2.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/rocksdb/utilities/transactions/write_unprepared_txn_db.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/rocksdb/utilities/transactions/write_unprepared_txn_db.h b/src/rocksdb/utilities/transactions/write_unprepared_txn_db.h new file mode 100644 index 000000000..c40e96d49 --- /dev/null +++ b/src/rocksdb/utilities/transactions/write_unprepared_txn_db.h @@ -0,0 +1,108 @@ +// Copyright (c) 2011-present, Facebook, Inc. All rights reserved. +// 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). + +#pragma once +#ifndef ROCKSDB_LITE + +#include "utilities/transactions/write_prepared_txn_db.h" +#include "utilities/transactions/write_unprepared_txn.h" + +namespace ROCKSDB_NAMESPACE { + +class WriteUnpreparedTxn; + +class WriteUnpreparedTxnDB : public WritePreparedTxnDB { + public: + using WritePreparedTxnDB::WritePreparedTxnDB; + + Status Initialize(const std::vector<size_t>& compaction_enabled_cf_indices, + const std::vector<ColumnFamilyHandle*>& handles) override; + + Transaction* BeginTransaction(const WriteOptions& write_options, + const TransactionOptions& txn_options, + Transaction* old_txn) override; + + // Struct to hold ownership of snapshot and read callback for cleanup. + struct IteratorState; + + using WritePreparedTxnDB::NewIterator; + Iterator* NewIterator(const ReadOptions& options, + ColumnFamilyHandle* column_family, + WriteUnpreparedTxn* txn); + + private: + Status RollbackRecoveredTransaction(const DBImpl::RecoveredTransaction* rtxn); +}; + +class WriteUnpreparedCommitEntryPreReleaseCallback : public PreReleaseCallback { + // TODO(lth): Reduce code duplication with + // WritePreparedCommitEntryPreReleaseCallback + public: + // includes_data indicates that the commit also writes non-empty + // CommitTimeWriteBatch to memtable, which needs to be committed separately. + WriteUnpreparedCommitEntryPreReleaseCallback( + WritePreparedTxnDB* db, DBImpl* db_impl, + const std::map<SequenceNumber, size_t>& unprep_seqs, + size_t data_batch_cnt = 0, bool publish_seq = true) + : db_(db), + db_impl_(db_impl), + unprep_seqs_(unprep_seqs), + data_batch_cnt_(data_batch_cnt), + includes_data_(data_batch_cnt_ > 0), + publish_seq_(publish_seq) { + assert(unprep_seqs.size() > 0); + } + + virtual Status Callback(SequenceNumber commit_seq, + bool is_mem_disabled __attribute__((__unused__)), + uint64_t, size_t /*index*/, + size_t /*total*/) override { + const uint64_t last_commit_seq = LIKELY(data_batch_cnt_ <= 1) + ? commit_seq + : commit_seq + data_batch_cnt_ - 1; + // Recall that unprep_seqs maps (un)prepared_seq => prepare_batch_cnt. + for (const auto& s : unprep_seqs_) { + for (size_t i = 0; i < s.second; i++) { + db_->AddCommitted(s.first + i, last_commit_seq); + } + } + + if (includes_data_) { + assert(data_batch_cnt_); + // Commit the data that is accompanied with the commit request + for (size_t i = 0; i < data_batch_cnt_; i++) { + // For commit seq of each batch use the commit seq of the last batch. + // This would make debugging easier by having all the batches having + // the same sequence number. + db_->AddCommitted(commit_seq + i, last_commit_seq); + } + } + if (db_impl_->immutable_db_options().two_write_queues && publish_seq_) { + assert(is_mem_disabled); // implies the 2nd queue + // Publish the sequence number. We can do that here assuming the callback + // is invoked only from one write queue, which would guarantee that the + // publish sequence numbers will be in order, i.e., once a seq is + // published all the seq prior to that are also publishable. + db_impl_->SetLastPublishedSequence(last_commit_seq); + } + // else SequenceNumber that is updated as part of the write already does the + // publishing + return Status::OK(); + } + + private: + WritePreparedTxnDB* db_; + DBImpl* db_impl_; + const std::map<SequenceNumber, size_t>& unprep_seqs_; + size_t data_batch_cnt_; + // Either because it is commit without prepare or it has a + // CommitTimeWriteBatch + bool includes_data_; + // Should the callback also publishes the commit seq number + bool publish_seq_; +}; + +} // namespace ROCKSDB_NAMESPACE +#endif // ROCKSDB_LITE |