mirror of
https://github.com/gravitational/teleport.git
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124 lines
4.0 KiB
Go
124 lines
4.0 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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"fmt"
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"strings"
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"github.com/gravitational/trace"
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"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
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"go.mongodb.org/mongo-driver/x/mongo/driver/wiremessage"
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)
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// MessageOpInsert represents parsed OP_INSERT wire message.
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//
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// https://docs.mongodb.com/manual/reference/mongodb-wire-protocol/#op_insert
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//
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// struct {
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// MsgHeader header; // standard message header
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// int32 flags; // bit vector - see below
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// cstring fullCollectionName; // "dbname.collectionname"
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// document* documents; // one or more documents to insert into the collection
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// }
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//
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// OP_INSERT is deprecated starting MongoDB 5.0 in favor of OP_MSG.
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type MessageOpInsert struct {
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Header MessageHeader
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Flags int32
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FullCollectionName string
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Documents []bsoncore.Document
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// bytes is the full wire message bytes (incl. header) read from the connection.
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bytes []byte
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}
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// GetHeader returns the wire message header.
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func (m *MessageOpInsert) GetHeader() MessageHeader {
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return m.Header
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}
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// GetBytes returns the message raw bytes read from the connection.
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func (m *MessageOpInsert) GetBytes() []byte {
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return m.bytes
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}
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// GetDatabase returns the command's database.
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func (m *MessageOpInsert) GetDatabase() (string, error) {
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// Full collection name has "<db>.<collection>" format.
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return strings.Split(m.FullCollectionName, ".")[0], nil
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}
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// GetCommand returns the message's command.
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func (m *MessageOpInsert) GetCommand() (string, error) {
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return "insert", nil
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}
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// String returns the message string representation.
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func (m *MessageOpInsert) String() string {
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documents := make([]string, 0, len(m.Documents))
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for _, document := range m.Documents {
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documents = append(documents, document.String())
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}
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return fmt.Sprintf("OpInsert(FullCollectionName=%v, Documents=%s, Flags=%v)",
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m.FullCollectionName, documents, m.Flags)
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}
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// MoreToCome is whether sender will send another message right after this one.
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func (m *MessageOpInsert) MoreToCome(_ Message) bool {
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return true
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}
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// readOpInsert converts OP_INSERT wire message bytes to a structured form.
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func readOpInsert(header MessageHeader, payload []byte) (*MessageOpInsert, error) {
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flags, rem, ok := readInt32(payload)
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if !ok {
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return nil, trace.BadParameter("malformed OP_INSERT: missing flags %v", payload)
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}
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fullCollectionName, rem, ok := readCString(rem)
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if !ok {
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return nil, trace.BadParameter("malformed OP_INSERT: missing full collection name %v", payload)
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}
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var documents []bsoncore.Document
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for len(rem) > 0 {
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var document bsoncore.Document
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document, rem, ok = bsoncore.ReadDocument(rem)
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if !ok || len(document) == 0 {
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return nil, trace.BadParameter("malformed OP_INSERT: missing document %v", payload)
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}
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documents = append(documents, document)
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}
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return &MessageOpInsert{
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Header: header,
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Flags: flags,
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FullCollectionName: fullCollectionName,
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Documents: documents,
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bytes: append(header.bytes[:], payload...),
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}, nil
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}
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// ToWire converts this message to wire protocol message bytes.
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func (m *MessageOpInsert) ToWire(responseTo int32) (dst []byte) {
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var idx int32
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idx, dst = wiremessage.AppendHeaderStart(dst, m.Header.RequestID, responseTo, wiremessage.OpInsert)
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dst = appendInt32(dst, m.Flags)
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dst = appendCString(dst, m.FullCollectionName)
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for _, document := range m.Documents {
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dst = bsoncore.AppendDocument(dst, document)
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}
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return bsoncore.UpdateLength(dst, idx, int32(len(dst[idx:])))
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}
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