1 files changed, 116 insertions, 0 deletions
diff --git a/src/mongo/db/transaction/transaction_operations.cpp b/src/mongo/db/transaction/transaction_operations.cpp
new file mode 100644
index 00000000000..4dd72641184
--- /dev/null
+++ b/src/mongo/db/transaction/transaction_operations.cpp
@@ -0,0 +1,116 @@
+/**
+ *    Copyright (C) 2022-present MongoDB, Inc.
+ *
+ *    This program is free software: you can redistribute it and/or modify
+ *    it under the terms of the Server Side Public License, version 1,
+ *    as published by MongoDB, Inc.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    Server Side Public License for more details.
+ *
+ *    You should have received a copy of the Server Side Public License
+ *    along with this program. If not, see
+ *    <http://www.mongodb.com/licensing/server-side-public-license>.
+ *
+ *    As a special exception, the copyright holders give permission to link the
+ *    code of portions of this program with the OpenSSL library under certain
+ *    conditions as described in each individual source file and distribute
+ *    linked combinations including the program with the OpenSSL library. You
+ *    must comply with the Server Side Public License in all respects for
+ *    all of the code used other than as permitted herein. If you modify file(s)
+ *    with this exception, you may extend this exception to your version of the
+ *    file(s), but you are not obligated to do so. If you do not wish to do so,
+ *    delete this exception statement from your version. If you delete this
+ *    exception statement from all source files in the program, then also delete
+ *    it in the license file.
+ */
+
+#include "mongo/db/transaction/transaction_operations.h"
+
+#include <fmt/format.h>
+
+namespace mongo {
+
+bool TransactionOperations::isEmpty() const {
+    return _transactionOperations.empty();
+}
+
+std::size_t TransactionOperations::numOperations() const {
+    return _transactionOperations.size();
+}
+
+std::size_t TransactionOperations::getTotalOperationBytes() const {
+    return _totalOperationBytes;
+}
+
+std::size_t TransactionOperations::getNumberOfPrePostImagesToWrite() const {
+    return _numberOfPrePostImagesToWrite;
+}
+
+void TransactionOperations::clear() {
+    _transactionOperations.clear();
+    _transactionStmtIds.clear();
+    _totalOperationBytes = 0;
+    _numberOfPrePostImagesToWrite = 0;
+}
+
+Status TransactionOperations::addOperation(const TransactionOperation& operation,
+                                           boost::optional<std::size_t> transactionSizeLimitBytes) {
+    auto stmtIdsToInsert = operation.getStatementIds();
+    auto newTransactionStmtIds = _transactionStmtIds;
+    for (auto stmtId : stmtIdsToInsert) {
+        auto [_, inserted] = newTransactionStmtIds.insert(stmtId);
+        if (inserted) {
+            continue;
+        }
+        return Status(static_cast<ErrorCodes::Error>(5875600),
+                      fmt::format("Found two operations using the same stmtId of {}", stmtId));
+    }
+
+    auto opSize = repl::DurableOplogEntry::getDurableReplOperationSize(operation);
+
+    // The pre-image size is always added to the collection transaction size, but
+    // there are additional conditions for adding the pre-image to
+    // '_numberOfPrePostImagesToWrite'. See SERVER-59694.
+    std::size_t numberOfPrePostImagesToWrite = 0;
+    if (const auto& preImage = operation.getPreImage(); !preImage.isEmpty()) {
+        opSize += static_cast<std::size_t>(preImage.objsize());
+        if (operation.isPreImageRecordedForRetryableInternalTransaction()) {
+            numberOfPrePostImagesToWrite++;
+        }
+    }
+
+    // The post-image, if present, is always included in the size and pre/post image counters.
+    if (const auto& postImage = operation.getPostImage(); !postImage.isEmpty()) {
+        opSize += operation.getPostImage().objsize();
+        numberOfPrePostImagesToWrite++;
+    }
+
+    if (transactionSizeLimitBytes && (_totalOperationBytes + opSize) > *transactionSizeLimitBytes) {
+        return Status(ErrorCodes::TransactionTooLarge,
+                      fmt::format("Total size of all transaction operations must be less than "
+                                  "server parameter 'transactionSizeLimitBytes' = {}",
+                                  *transactionSizeLimitBytes));
+    }
+
+    _transactionOperations.push_back(operation);
+    _transactionStmtIds = std::move(newTransactionStmtIds);
+    _totalOperationBytes += opSize;
+    _numberOfPrePostImagesToWrite += numberOfPrePostImagesToWrite;
+
+    return Status::OK();
+}
+
+std::vector<TransactionOperations::TransactionOperation>*
+TransactionOperations::getMutableOperationsForTransactionParticipant() {
+    return &_transactionOperations;
+}
+
+std::vector<TransactionOperations::TransactionOperation>
+TransactionOperations::getOperationsForTest() const {
+    return _transactionOperations;
+}
+
+}  // namespace mongo