You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
126 lines
3.7 KiB
126 lines
3.7 KiB
package fetch
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/segmentio/kafka-go/protocol"
|
|
)
|
|
|
|
func init() {
|
|
protocol.Register(&Request{}, &Response{})
|
|
}
|
|
|
|
type Request struct {
|
|
ReplicaID int32 `kafka:"min=v0,max=v11"`
|
|
MaxWaitTime int32 `kafka:"min=v0,max=v11"`
|
|
MinBytes int32 `kafka:"min=v0,max=v11"`
|
|
MaxBytes int32 `kafka:"min=v3,max=v11"`
|
|
IsolationLevel int8 `kafka:"min=v4,max=v11"`
|
|
SessionID int32 `kafka:"min=v7,max=v11"`
|
|
SessionEpoch int32 `kafka:"min=v7,max=v11"`
|
|
Topics []RequestTopic `kafka:"min=v0,max=v11"`
|
|
ForgottenTopics []RequestForgottenTopic `kafka:"min=v7,max=v11"`
|
|
RackID string `kafka:"min=v11,max=v11"`
|
|
}
|
|
|
|
func (r *Request) ApiKey() protocol.ApiKey { return protocol.Fetch }
|
|
|
|
func (r *Request) Broker(cluster protocol.Cluster) (protocol.Broker, error) {
|
|
broker := protocol.Broker{ID: -1}
|
|
|
|
for i := range r.Topics {
|
|
t := &r.Topics[i]
|
|
|
|
topic, ok := cluster.Topics[t.Topic]
|
|
if !ok {
|
|
return broker, NewError(protocol.NewErrNoTopic(t.Topic))
|
|
}
|
|
|
|
for j := range t.Partitions {
|
|
p := &t.Partitions[j]
|
|
|
|
partition, ok := topic.Partitions[p.Partition]
|
|
if !ok {
|
|
return broker, NewError(protocol.NewErrNoPartition(t.Topic, p.Partition))
|
|
}
|
|
|
|
if b, ok := cluster.Brokers[partition.Leader]; !ok {
|
|
return broker, NewError(protocol.NewErrNoLeader(t.Topic, p.Partition))
|
|
} else if broker.ID < 0 {
|
|
broker = b
|
|
} else if b.ID != broker.ID {
|
|
return broker, NewError(fmt.Errorf("mismatching leaders (%d!=%d)", b.ID, broker.ID))
|
|
}
|
|
}
|
|
}
|
|
|
|
return broker, nil
|
|
}
|
|
|
|
type RequestTopic struct {
|
|
Topic string `kafka:"min=v0,max=v11"`
|
|
Partitions []RequestPartition `kafka:"min=v0,max=v11"`
|
|
}
|
|
|
|
type RequestPartition struct {
|
|
Partition int32 `kafka:"min=v0,max=v11"`
|
|
CurrentLeaderEpoch int32 `kafka:"min=v9,max=v11"`
|
|
FetchOffset int64 `kafka:"min=v0,max=v11"`
|
|
LogStartOffset int64 `kafka:"min=v5,max=v11"`
|
|
PartitionMaxBytes int32 `kafka:"min=v0,max=v11"`
|
|
}
|
|
|
|
type RequestForgottenTopic struct {
|
|
Topic string `kafka:"min=v7,max=v11"`
|
|
Partitions []int32 `kafka:"min=v7,max=v11"`
|
|
}
|
|
|
|
type Response struct {
|
|
ThrottleTimeMs int32 `kafka:"min=v1,max=v11"`
|
|
ErrorCode int16 `kafka:"min=v7,max=v11"`
|
|
SessionID int32 `kafka:"min=v7,max=v11"`
|
|
Topics []ResponseTopic `kafka:"min=v0,max=v11"`
|
|
}
|
|
|
|
func (r *Response) ApiKey() protocol.ApiKey { return protocol.Fetch }
|
|
|
|
type ResponseTopic struct {
|
|
Topic string `kafka:"min=v0,max=v11"`
|
|
Partitions []ResponsePartition `kafka:"min=v0,max=v11"`
|
|
}
|
|
|
|
type ResponsePartition struct {
|
|
Partition int32 `kafka:"min=v0,max=v11"`
|
|
ErrorCode int16 `kafka:"min=v0,max=v11"`
|
|
HighWatermark int64 `kafka:"min=v0,max=v11"`
|
|
LastStableOffset int64 `kafka:"min=v4,max=v11"`
|
|
LogStartOffset int64 `kafka:"min=v5,max=v11"`
|
|
AbortedTransactions []ResponseTransaction `kafka:"min=v4,max=v11"`
|
|
PreferredReadReplica int32 `kafka:"min=v11,max=v11"`
|
|
RecordSet protocol.RecordSet `kafka:"min=v0,max=v11"`
|
|
}
|
|
|
|
type ResponseTransaction struct {
|
|
ProducerID int64 `kafka:"min=v4,max=v11"`
|
|
FirstOffset int64 `kafka:"min=v4,max=v11"`
|
|
}
|
|
|
|
var (
|
|
_ protocol.BrokerMessage = (*Request)(nil)
|
|
)
|
|
|
|
type Error struct {
|
|
Err error
|
|
}
|
|
|
|
func NewError(err error) *Error {
|
|
return &Error{Err: err}
|
|
}
|
|
|
|
func (e *Error) Error() string {
|
|
return fmt.Sprintf("fetch request error: %v", e.Err)
|
|
}
|
|
|
|
func (e *Error) Unwrap() error {
|
|
return e.Err
|
|
}
|
|
|