forked from gravitational/teleport
/
errors.go
78 lines (72 loc) · 2.32 KB
/
errors.go
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/*
* Teleport
* Copyright (C) 2023 Gravitational, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package protocol
import (
"net"
"github.com/gravitational/trace"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/x/mongo/driver/wiremessage"
)
// ReplyError sends error wire message to the client.
func ReplyError(clientConn net.Conn, replyTo Message, clientErr error) (err error) {
if msgCompressed, ok := replyTo.(*MessageOpCompressed); ok {
replyTo = msgCompressed.GetOriginal()
}
var errMessage Message
switch replyTo.(type) {
case *MessageOpMsg: // When client request is OP_MSG, reply should be OP_MSG as well.
errMessage, err = makeOpMsgError(clientErr)
default: // Send OP_REPLY otherwise.
errMessage, err = makeOpReplyError(clientErr)
}
if err != nil {
return trace.Wrap(err)
}
// Encode request ID in the response's "replyTo" header field since the
// client may check which request this error response corresponds to.
var replyToID int32
if replyTo != nil {
replyToID = replyTo.GetHeader().RequestID
}
_, err = clientConn.Write(errMessage.ToWire(replyToID))
if err != nil {
return trace.Wrap(err)
}
return nil
}
// makeOpReplyError builds a OP_REPLY error wire message.
func makeOpReplyError(err error) (Message, error) {
document, err := bson.Marshal(bson.M{
"$err": err.Error(),
})
if err != nil {
return nil, trace.Wrap(err)
}
return MakeOpReplyWithFlags(document, wiremessage.QueryFailure), nil
}
// makeOpMsgError builds a OP_MSG error wire message.
func makeOpMsgError(err error) (Message, error) {
document, err := bson.Marshal(bson.M{
"ok": 0,
"errmsg": err.Error(),
})
if err != nil {
return nil, trace.Wrap(err)
}
return MakeOpMsg(document), nil
}