add descibeclientquotas protocol

Author: petedannemann

protocol/alterclientquotas/alterclientquotas.go

@@ -28,7 +28,7 @@ type Entry struct {
 
 type Entity struct {
 	EntityType string `kafka:"min=v0,max=v1"`
-	EntityName string `kafka:"min=v0,max=v1",nullable`
+	EntityName string `kafka:"min=v0,max=v1,nullable"`
 }
 
 type Ops struct {

protocol/describeclientquotas/describeclientquotas.go

@@ -0,0 +1,53 @@
+package describeclientquotas
+
+import "github.com/segmentio/kafka-go/protocol"
+
+func init() {
+	protocol.Register(&Request{}, &Response{})
+}
+
+type Request struct {
+	// We need at least one tagged field to indicate that v2+ uses "flexible"
+	// messages.
+	_ struct{} `kafka:"min=v2,max=v2,tag"`
+
+	Components []Component `kafka:"min=v0,max=v1"`
+	Strict     boolean     `kafka:"min=v0,max=v1"`
+}
+
+func (r *Request) ApiKey() protocol.ApiKey { return protocol.DescribeClientQuotas }
+
+func (r *Request) Broker(cluster protocol.Cluster) (protocol.Broker, error) {
+	return cluster.Brokers[cluster.Controller], nil
+}
+
+type Component struct {
+	EntityType string `kafka:"min=v0,max=v1"`
+	MatchType  int8   `kafka:"min=v0,max=v1"`
+	Match      string `kafka:"min=v0,max=v1,nullable"`
+}
+
+type Response struct {
+	// We need at least one tagged field to indicate that v2+ uses "flexible"
+	// messages.
+	_ struct{} `kafka:"min=v2,max=v2,tag"`
+
+	ThrottleTimeMs int32            `kafka:"min=v0,max=v1"`
+	ErrorCode      int16            `kafka:"min=v0,max=v1"`
+	ErrorMessage   string           `kafka:"min=v0,max=v1,nullable"`
+	Entries        []ResponseQuotas `kafka:"min=v0,max=v1"`
+}
+
+func (r *Response) ApiKey() protocol.ApiKey { return protocol.CreateAcls }
+
+type Value struct {
+	Key   string  `kafka:"min=v0,max=v1"`
+	Value float64 `kafka:"min=v0,max=v1"`
+}
+
+type ResponseQuotas struct {
+	Entities []Entity `kafka:"min=v0,max=v1"`
+	Values   []Value  `kafka:"min=v0,max=v1"`
+}
+
+var _ protocol.BrokerMessage = (*Request)(nil)