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/**
* Copyright (C) 2024-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/write_concern_idl.h"
#include <fmt/format.h>
#include "mongo/base/error_codes.h"
#include "mongo/bson/bsontypes.h"
#include "mongo/bson/util/bson_extract.h"
#include "mongo/db/repl/repl_set_config.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/duration.h"
namespace mongo {
// Helpers for IDL parsing
WriteConcernW deserializeWriteConcernW(BSONElement wEl) {
using namespace fmt::literals;
if (wEl.isNumber()) {
uassert(ErrorCodes::FailedToParse, "w cannot be NaN", !wEl.isNaN());
auto wNum = wEl.safeNumberLong();
if (wNum < 0 || wNum > static_cast<long long>(repl::ReplSetConfig::kMaxMembers)) {
uasserted(ErrorCodes::FailedToParse,
"w has to be a non-negative number and not greater than {}; found: {}"_format(
repl::ReplSetConfig::kMaxMembers, wNum));
}
return WriteConcernW{wNum};
} else if (wEl.type() == BSONType::String) {
return WriteConcernW{wEl.str()};
} else if (wEl.type() == BSONType::Object) {
auto wTags = wEl.Obj();
uassert(ErrorCodes::FailedToParse, "tagged write concern requires tags", !wTags.isEmpty());
WTags tags;
for (auto&& e : wTags) {
uassert(
ErrorCodes::FailedToParse,
"tags must be a single level document with only number values; found: {}"_format(
e.toString()),
e.isNumber());
tags.try_emplace(e.fieldName(), e.safeNumberInt());
}
return WriteConcernW{std::move(tags)};
} else if (wEl.eoo() || wEl.type() == BSONType::jstNULL || wEl.type() == BSONType::Undefined) {
return WriteConcernW{};
}
uasserted(ErrorCodes::FailedToParse,
"w has to be a number, string, or object; found: {}"_format(typeName(wEl.type())));
}
void serializeWriteConcernW(const WriteConcernW& w, StringData fieldName, BSONObjBuilder* builder) {
visit(OverloadedVisitor{[&](int64_t wNumNodes) {
builder->appendNumber(fieldName, static_cast<long long>(wNumNodes));
},
[&](std::string wMode) { builder->append(fieldName, wMode); },
[&](WTags wTags) {
builder->append(fieldName, wTags);
}},
w);
}
std::int64_t parseWTimeoutFromBSON(BSONElement element) {
// Store wTimeout as a 64-bit value but functionally limit it to int32 as values larger than
// than that do not make much sense to use and were not previously supported.
constexpr std::array<mongo::BSONType, 4> validTypes{
NumberLong, NumberInt, NumberDecimal, NumberDouble};
bool isValidType = std::any_of(
validTypes.begin(), validTypes.end(), [&](auto type) { return element.type() == type; });
auto value = isValidType ? element.safeNumberLong() : 0;
uassert(ErrorCodes::FailedToParse,
"wtimeout must be a 32-bit integer",
value <= std::numeric_limits<int32_t>::max());
return value;
}
void serializeWTimeout(std::int64_t wTimeout, StringData fieldName, BSONObjBuilder* builder) {
// Historically we have serialized this as a int32_t, even though it is defined as an
// int64_t in our IDL format.
builder->append(fieldName, static_cast<int32_t>(wTimeout));
}
} // namespace mongo
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