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package sarama
import "errors"
// ConsumerGroupMemberMetadata holds the metadata for consumer group
// https://github.com/apache/kafka/blob/trunk/clients/src/main/resources/common/message/ConsumerProtocolSubscription.json
type ConsumerGroupMemberMetadata struct {
Version int16
Topics []string
UserData []byte
OwnedPartitions []*OwnedPartition
GenerationID int32
RackID *string
}
func (m *ConsumerGroupMemberMetadata) encode(pe packetEncoder) error {
pe.putInt16(m.Version)
if err := pe.putStringArray(m.Topics); err != nil {
return err
}
if err := pe.putBytes(m.UserData); err != nil {
return err
}
if m.Version >= 1 {
if err := pe.putArrayLength(len(m.OwnedPartitions)); err != nil {
return err
}
for _, op := range m.OwnedPartitions {
if err := op.encode(pe); err != nil {
return err
}
}
}
if m.Version >= 2 {
pe.putInt32(m.GenerationID)
}
if m.Version >= 3 {
if err := pe.putNullableString(m.RackID); err != nil {
return err
}
}
return nil
}
func (m *ConsumerGroupMemberMetadata) decode(pd packetDecoder) (err error) {
if m.Version, err = pd.getInt16(); err != nil {
return
}
if m.Topics, err = pd.getStringArray(); err != nil {
return
}
if m.UserData, err = pd.getBytes(); err != nil {
return
}
if m.Version >= 1 {
n, err := pd.getArrayLength()
if err != nil {
// permit missing data here in case of misbehaving 3rd party
// clients who incorrectly marked the member metadata as V1 in
// their JoinGroup request
if errors.Is(err, ErrInsufficientData) {
return nil
}
return err
}
if n > 0 {
m.OwnedPartitions = make([]*OwnedPartition, n)
for i := 0; i < n; i++ {
m.OwnedPartitions[i] = &OwnedPartition{}
if err := m.OwnedPartitions[i].decode(pd); err != nil {
return err
}
}
}
}
if m.Version >= 2 {
if m.GenerationID, err = pd.getInt32(); err != nil {
return err
}
}
if m.Version >= 3 {
if m.RackID, err = pd.getNullableString(); err != nil {
return err
}
}
return nil
}
type OwnedPartition struct {
Topic string
Partitions []int32
}
func (m *OwnedPartition) encode(pe packetEncoder) error {
if err := pe.putString(m.Topic); err != nil {
return err
}
if err := pe.putInt32Array(m.Partitions); err != nil {
return err
}
return nil
}
func (m *OwnedPartition) decode(pd packetDecoder) (err error) {
if m.Topic, err = pd.getString(); err != nil {
return err
}
if m.Partitions, err = pd.getInt32Array(); err != nil {
return err
}
return nil
}
// ConsumerGroupMemberAssignment holds the member assignment for a consume group
// https://github.com/apache/kafka/blob/trunk/clients/src/main/resources/common/message/ConsumerProtocolAssignment.json
type ConsumerGroupMemberAssignment struct {
Version int16
Topics map[string][]int32
UserData []byte
}
func (m *ConsumerGroupMemberAssignment) encode(pe packetEncoder) error {
pe.putInt16(m.Version)
if err := pe.putArrayLength(len(m.Topics)); err != nil {
return err
}
for topic, partitions := range m.Topics {
if err := pe.putString(topic); err != nil {
return err
}
if err := pe.putInt32Array(partitions); err != nil {
return err
}
}
if err := pe.putBytes(m.UserData); err != nil {
return err
}
return nil
}
func (m *ConsumerGroupMemberAssignment) decode(pd packetDecoder) (err error) {
if m.Version, err = pd.getInt16(); err != nil {
return
}
var topicLen int
if topicLen, err = pd.getArrayLength(); err != nil {
return
}
m.Topics = make(map[string][]int32, topicLen)
for i := 0; i < topicLen; i++ {
var topic string
if topic, err = pd.getString(); err != nil {
return
}
if m.Topics[topic], err = pd.getInt32Array(); err != nil {
return
}
}
if m.UserData, err = pd.getBytes(); err != nil {
return
}
return nil
}
|
