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|
package sarama
type MetadataRequest struct {
Version int16
Topics []string
AllowAutoTopicCreation bool
}
func (r *MetadataRequest) encode(pe packetEncoder) error {
if r.Version < 0 || r.Version > 5 {
return PacketEncodingError{"invalid or unsupported MetadataRequest version field"}
}
if r.Version == 0 || len(r.Topics) > 0 {
err := pe.putArrayLength(len(r.Topics))
if err != nil {
return err
}
for i := range r.Topics {
err = pe.putString(r.Topics[i])
if err != nil {
return err
}
}
} else {
pe.putInt32(-1)
}
if r.Version > 3 {
pe.putBool(r.AllowAutoTopicCreation)
}
return nil
}
func (r *MetadataRequest) decode(pd packetDecoder, version int16) error {
r.Version = version
size, err := pd.getInt32()
if err != nil {
return err
}
if size > 0 {
r.Topics = make([]string, size)
for i := range r.Topics {
topic, err := pd.getString()
if err != nil {
return err
}
r.Topics[i] = topic
}
}
if r.Version > 3 {
autoCreation, err := pd.getBool()
if err != nil {
return err
}
r.AllowAutoTopicCreation = autoCreation
}
return nil
}
func (r *MetadataRequest) key() int16 {
return 3
}
func (r *MetadataRequest) version() int16 {
return r.Version
}
func (r *MetadataRequest) requiredVersion() KafkaVersion {
switch r.Version {
case 1:
return V0_10_0_0
case 2:
return V0_10_1_0
case 3, 4:
return V0_11_0_0
case 5:
return V1_0_0_0
default:
return MinVersion
}
}
|
