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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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/storage/duplicate_key_error_info.h"
#include "mongo/base/init.h"
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/hex.h"
#include "mongo/util/text.h"
namespace mongo {
namespace {
MONGO_INIT_REGISTER_ERROR_EXTRA_INFO(DuplicateKeyErrorInfo);
} // namespace
void DuplicateKeyErrorInfo::serialize(BSONObjBuilder* bob) const {
bob->append("keyPattern", _keyPattern);
// Keep track of which components of the key pattern are hex encoded.
std::vector<bool> hexEncodedComponents;
bool atLeastOneComponentIsHexEncoded = false;
BSONObjBuilder keyValueBuilder{bob->subobjStart("keyValue")};
for (const auto& keyValueElem : _keyValue) {
const bool shouldHexEncode = keyValueElem.type() == BSONType::String &&
(!_collation.isEmpty() || !isValidUTF8(keyValueElem.valueStringData()));
hexEncodedComponents.push_back(shouldHexEncode);
if (shouldHexEncode) {
atLeastOneComponentIsHexEncoded = true;
keyValueBuilder.append(keyValueElem.fieldName(),
hexblob::encodeLower(keyValueElem.valueStringData()));
} else {
keyValueBuilder.append(keyValueElem);
}
}
keyValueBuilder.doneFast();
// Append a vector of booleans describing which components of the key pattern are hex encoded.
if (atLeastOneComponentIsHexEncoded) {
BSONArrayBuilder hexEncodedBuilder{bob->subarrayStart("hexEncoded")};
for (auto&& isHex : hexEncodedComponents) {
hexEncodedBuilder.appendBool(isHex);
}
hexEncodedBuilder.doneFast();
}
if (!_collation.isEmpty()) {
bob->append("collation", _collation);
}
}
std::shared_ptr<const ErrorExtraInfo> DuplicateKeyErrorInfo::parse(const BSONObj& obj) {
auto keyPattern = obj["keyPattern"].Obj();
BSONObj keyValue;
// Determine which components of 'keyValue' are hex encoded that need to be decoded.
// If the "hexEncoded" field does not exist, then assume that no decoding is necessary.
if (auto hexEncodedElt = obj["hexEncoded"]) {
BSONObjIterator isHexEncodedIt(hexEncodedElt.Obj());
BSONObjIterator keyValueElemIt(obj["keyValue"].Obj());
BSONObjBuilder keyValueBuilder;
while (isHexEncodedIt.more()) {
const auto& keyValueElem = keyValueElemIt.next();
if (isHexEncodedIt.next().Bool()) {
keyValueBuilder.append(keyValueElem.fieldName(),
hexblob::decode(keyValueElem.checkAndGetStringData()));
} else {
keyValueBuilder.append(keyValueElem);
}
}
keyValue = keyValueBuilder.obj();
} else {
keyValue = obj["keyValue"].Obj();
}
BSONObj collation;
if (auto collationElt = obj["collation"]) {
collation = collationElt.Obj();
}
return std::make_shared<DuplicateKeyErrorInfo>(keyPattern, keyValue, collation);
}
} // namespace mongo
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