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
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
package sarama
import "time"
type JoinGroupResponse struct {
// Version defines the protocol version to use for encode and decode
Version int16
// ThrottleTime contains the duration for which the request was throttled due
// to a quota violation, or zero if the request did not violate any quota.
ThrottleTime int32
// Err contains the error code, or 0 if there was no error.
Err KError
// GenerationId contains the generation ID of the group.
GenerationId int32
// GroupProtocol contains the group protocol selected by the coordinator.
GroupProtocol string
// LeaderId contains the leader of the group.
LeaderId string
// MemberId contains the member ID assigned by the group coordinator.
MemberId string
// Members contains the per-group-member information.
Members []GroupMember
}
type GroupMember struct {
// MemberId contains the group member ID.
MemberId string
// GroupInstanceId contains the unique identifier of the consumer instance
// provided by end user.
GroupInstanceId *string
// Metadata contains the group member metadata.
Metadata []byte
}
func (r *JoinGroupResponse) GetMembers() (map[string]ConsumerGroupMemberMetadata, error) {
members := make(map[string]ConsumerGroupMemberMetadata, len(r.Members))
for _, member := range r.Members {
meta := new(ConsumerGroupMemberMetadata)
if err := decode(member.Metadata, meta, nil); err != nil {
return nil, err
}
members[member.MemberId] = *meta
}
return members, nil
}
func (r *JoinGroupResponse) encode(pe packetEncoder) error {
if r.Version >= 2 {
pe.putInt32(r.ThrottleTime)
}
pe.putInt16(int16(r.Err))
pe.putInt32(r.GenerationId)
if err := pe.putString(r.GroupProtocol); err != nil {
return err
}
if err := pe.putString(r.LeaderId); err != nil {
return err
}
if err := pe.putString(r.MemberId); err != nil {
return err
}
if err := pe.putArrayLength(len(r.Members)); err != nil {
return err
}
for _, member := range r.Members {
if err := pe.putString(member.MemberId); err != nil {
return err
}
if r.Version >= 5 {
if err := pe.putNullableString(member.GroupInstanceId); err != nil {
return err
}
}
if err := pe.putBytes(member.Metadata); err != nil {
return err
}
}
return nil
}
func (r *JoinGroupResponse) decode(pd packetDecoder, version int16) (err error) {
r.Version = version
if version >= 2 {
if r.ThrottleTime, err = pd.getInt32(); err != nil {
return
}
}
kerr, err := pd.getInt16()
if err != nil {
return err
}
r.Err = KError(kerr)
if r.GenerationId, err = pd.getInt32(); err != nil {
return
}
if r.GroupProtocol, err = pd.getString(); err != nil {
return
}
if r.LeaderId, err = pd.getString(); err != nil {
return
}
if r.MemberId, err = pd.getString(); err != nil {
return
}
n, err := pd.getArrayLength()
if err != nil {
return err
}
if n == 0 {
return nil
}
r.Members = make([]GroupMember, n)
for i := 0; i < n; i++ {
memberId, err := pd.getString()
if err != nil {
return err
}
var groupInstanceId *string = nil
if r.Version >= 5 {
groupInstanceId, err = pd.getNullableString()
if err != nil {
return err
}
}
memberMetadata, err := pd.getBytes()
if err != nil {
return err
}
r.Members[i] = GroupMember{MemberId: memberId, GroupInstanceId: groupInstanceId, Metadata: memberMetadata}
}
return nil
}
func (r *JoinGroupResponse) key() int16 {
return 11
}
func (r *JoinGroupResponse) version() int16 {
return r.Version
}
func (r *JoinGroupResponse) headerVersion() int16 {
return 0
}
func (r *JoinGroupResponse) isValidVersion() bool {
return r.Version >= 0 && r.Version <= 5
}
func (r *JoinGroupResponse) requiredVersion() KafkaVersion {
switch r.Version {
case 5:
return V2_3_0_0
case 4:
return V2_2_0_0
case 3:
return V2_0_0_0
case 2:
return V0_11_0_0
case 1:
return V0_10_1_0
case 0:
return V0_10_0_0
default:
return V2_3_0_0
}
}
func (r *JoinGroupResponse) throttleTime() time.Duration {
return time.Duration(r.ThrottleTime) * time.Millisecond
}
|
