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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/rpc/legacy_reply.h"
#include <tuple>
#include <utility>
#include "mongo/bson/bson_validate.h"
#include "mongo/rpc/legacy_reply_builder.h"
#include "mongo/rpc/metadata.h"
#include "mongo/rpc/object_check.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/mongoutils/str.h"
namespace mongo {
namespace rpc {
LegacyReply::LegacyReply(const Message* message) {
invariant(message->operation() == opReply);
QueryResult::View qr = message->singleData().view2ptr();
// should be checked by caller.
invariant(qr.msgdata().getNetworkOp() == opReply);
uassert(ErrorCodes::BadValue,
str::stream() << "Got legacy command reply with a bad cursorId field,"
<< " expected a value of 0 but got "
<< qr.getCursorId(),
qr.getCursorId() == 0);
uassert(ErrorCodes::BadValue,
str::stream() << "Got legacy command reply with a bad nReturned field,"
<< " expected a value of 1 but got "
<< qr.getNReturned(),
qr.getNReturned() == 1);
uassert(ErrorCodes::BadValue,
str::stream() << "Got legacy command reply with a bad startingFrom field,"
<< " expected a value of 0 but got "
<< qr.getStartingFrom(),
qr.getStartingFrom() == 0);
auto status = Validator<BSONObj>::validateLoad(qr.data(), qr.dataLen());
uassert(ErrorCodes::InvalidBSON,
str::stream() << "Got legacy command reply with invalid BSON in the metadata field"
<< causedBy(status),
status.isOK());
_commandReply = BSONObj(qr.data());
_commandReply.shareOwnershipWith(message->sharedBuffer());
if (_commandReply.firstElementFieldName() == "$err"_sd) {
// Upconvert legacy errors
auto codeElement = _commandReply["code"];
int code = codeElement.numberInt();
if (!code) {
code = ErrorCodes::UnknownError;
}
auto errmsg = _commandReply.firstElement().String();
Status status(ErrorCodes::Error(code), errmsg, _commandReply);
BSONObjBuilder bob;
bob.append("ok", 0.0);
bob.append("code", status.code());
bob.append("errmsg", status.reason());
if (auto extraInfo = status.extraInfo()) {
extraInfo->serialize(&bob);
}
_commandReply = bob.obj();
}
return;
}
const BSONObj& LegacyReply::getCommandReply() const {
return _commandReply;
}
Protocol LegacyReply::getProtocol() const {
return rpc::Protocol::kOpQuery;
}
} // namespace rpc
} // namespace mongo
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