1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
/*
Copyright 2014 SAP SE
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package protocol
import (
"fmt"
"github.com/SAP/go-hdb/internal/protocol/encoding"
)
const (
messageHeaderSize = 32 //nolint:varcheck
)
//message header
type messageHeader struct {
sessionID int64
packetCount int32
varPartLength uint32
varPartSize uint32
noOfSegm int16
}
func (h *messageHeader) String() string {
return fmt.Sprintf("session id %d packetCount %d varPartLength %d, varPartSize %d noOfSegm %d",
h.sessionID,
h.packetCount,
h.varPartLength,
h.varPartSize,
h.noOfSegm)
}
func (h *messageHeader) encode(enc *encoding.Encoder) error {
enc.Int64(h.sessionID)
enc.Int32(h.packetCount)
enc.Uint32(h.varPartLength)
enc.Uint32(h.varPartSize)
enc.Int16(h.noOfSegm)
enc.Zeroes(10) //messageHeaderSize
return nil
}
func (h *messageHeader) decode(dec *encoding.Decoder) error {
h.sessionID = dec.Int64()
h.packetCount = dec.Int32()
h.varPartLength = dec.Uint32()
h.varPartSize = dec.Uint32()
h.noOfSegm = dec.Int16()
dec.Skip(10) //messageHeaderSize
return dec.Error()
}
|
