Initial QSfera import

Server/vendor/github.com/segmentio/kafka-go/protocol/fetch/fetch.go

@@ -0,0 +1,126 @@
+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
+}