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/**
 *    Copyright (C) 2018-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.
 */

#pragma once

#include "mongo/db/update/document_diff_serialization.h"
#include "mongo/db/update/update_oplog_entry_version.h"

/**
 * This provides helpers for creating oplog entries. To create a $v: 1 modifier-style oplog
 * entry, a LogBuilder must be used instead.
 */
namespace mongo::update_oplog_entry {

constexpr size_t kSizeOfDeltaOplogEntryMetadata = 15;

/**
 * Given a diff, produce the contents for the 'o' field of a $v: 2 delta-style oplog entry.
 */
inline BSONObj makeDeltaOplogEntry(const doc_diff::Diff& diff) {
    BSONObjBuilder builder;
    builder.append("$v", static_cast<int>(UpdateOplogEntryVersion::kDeltaV2));
    builder.append("diff", diff);
    return builder.obj();
}

/**
 * Produce the contents of the 'o' field of a replacement style oplog entry.
 */
inline BSONObj makeReplacementOplogEntry(const BSONObj& replacement) {
    return replacement;
}
}  // namespace mongo::update_oplog_entry