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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/ops/write_ops_gen.h"
#include "mongo/rpc/message.h"
#include "mongo/rpc/op_msg.h"
namespace mongo {
class InsertOp {
public:
static write_ops::InsertCommandRequest parse(const OpMsgRequest& request);
/**
* This is to parse OP_INSERT legacy request and deprecated and used only to parse legacy insert
* request to know how many documents need to be inserted for the purpose of monitoring. Do not
* call this method any more.
*/
static write_ops::InsertCommandRequest parseLegacy(const Message& msg);
static write_ops::InsertCommandReply parseResponse(const BSONObj& obj);
static void validate(const write_ops::InsertCommandRequest& insertOp);
};
class UpdateOp {
public:
static write_ops::UpdateCommandRequest parse(const OpMsgRequest& request);
static write_ops::UpdateCommandReply parseResponse(const BSONObj& obj);
static void validate(const write_ops::UpdateCommandRequest& updateOp);
};
class DeleteOp {
public:
static write_ops::DeleteCommandRequest parse(const OpMsgRequest& request);
static write_ops::DeleteCommandReply parseResponse(const BSONObj& obj);
static void validate(const write_ops::DeleteCommandRequest& deleteOp);
};
class FindAndModifyOp {
public:
static write_ops::FindAndModifyCommandReply parseResponse(const BSONObj& obj);
};
namespace write_ops {
// Limit of the number of operations that can be included in a single write command. This is an
// attempt to avoid a large number of errors resulting in a reply that exceeds 16MB. It doesn't
// fully ensure that goal, but it reduces the probability of it happening. This limit should not be
// used if the protocol changes to avoid the 16MB limit on reply size.
constexpr size_t kMaxWriteBatchSize = 100'000;
// Limit the size that we write without yielding to 16MB / 64 (max expected number of indexes)
constexpr size_t insertVectorMaxBytes = 256 * 1024;
/**
* Retrieves the statement id for the write at the specified position in the write batch entries
* array.
*/
int32_t getStmtIdForWriteAt(const WriteCommandRequestBase& writeCommandBase, size_t writePos);
template <class T>
int32_t getStmtIdForWriteAt(const T& op, size_t writePos) {
return getStmtIdForWriteAt(op.getWriteCommandRequestBase(), writePos);
}
// TODO: Delete this getter once IDL supports defaults for object and array fields
template <class T>
const BSONObj& collationOf(const T& opEntry) {
static const BSONObj emptyBSON{};
return opEntry.getCollation().get_value_or(emptyBSON);
}
// TODO: Delete this getter once IDL supports defaults for object and array fields
template <class T>
const std::vector<BSONObj>& arrayFiltersOf(const T& opEntry) {
static const std::vector<BSONObj> emptyBSONArray{};
return opEntry.getArrayFilters().get_value_or(emptyBSONArray);
}
/**
* If the response from a write command contains any write errors, it will throw the first one. All
* the remaining errors will be disregarded.
*
* Usages of this utility for anything other than single-document writes would be suspicious due to
* the fact that it will swallow the remaining ones.
*/
void checkWriteErrors(const WriteCommandReplyBase& reply);
template <class T>
T checkWriteErrors(T op) {
checkWriteErrors(op.getWriteCommandReplyBase());
return std::move(op);
}
} // namespace write_ops
} // namespace mongo
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