mirror of
https://github.com/gravitational/teleport.git
synced 2026-11-01 05:16:43 +08:00
77 lines
2.2 KiB
Go
77 lines
2.2 KiB
Go
/*
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Copyright 2021 Gravitational, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package protocol
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import (
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"net"
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"github.com/gravitational/trace"
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"go.mongodb.org/mongo-driver/bson"
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"go.mongodb.org/mongo-driver/x/mongo/driver/wiremessage"
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)
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// ReplyError sends error wire message to the client.
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func ReplyError(clientConn net.Conn, replyTo Message, clientErr error) (err error) {
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if msgCompressed, ok := replyTo.(*MessageOpCompressed); ok {
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replyTo = msgCompressed.GetOriginal()
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}
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var errMessage Message
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switch replyTo.(type) {
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case *MessageOpMsg: // When client request is OP_MSG, reply should be OP_MSG as well.
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errMessage, err = makeOpMsgError(clientErr)
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default: // Send OP_REPLY otherwise.
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errMessage, err = makeOpReplyError(clientErr)
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}
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if err != nil {
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return trace.Wrap(err)
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}
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// Encode request ID in the response's "replyTo" header field since the
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// client may check which request this error response corresponds to.
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var replyToID int32
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if replyTo != nil {
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replyToID = replyTo.GetHeader().RequestID
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}
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_, err = clientConn.Write(errMessage.ToWire(replyToID))
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if err != nil {
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return trace.Wrap(err)
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}
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return nil
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}
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// makeOpReplyError builds a OP_REPLY error wire message.
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func makeOpReplyError(err error) (Message, error) {
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document, err := bson.Marshal(bson.M{
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"$err": err.Error(),
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})
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if err != nil {
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return nil, trace.Wrap(err)
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}
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return MakeOpReplyWithFlags(document, wiremessage.QueryFailure), nil
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}
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// makeOpMsgError builds a OP_MSG error wire message.
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func makeOpMsgError(err error) (Message, error) {
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document, err := bson.Marshal(bson.M{
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"ok": 0,
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"errmsg": err.Error(),
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})
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if err != nil {
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return nil, trace.Wrap(err)
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}
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return MakeOpMsg(document), nil
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}
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