Merge pull request 'meter: write metrics inside broker implementation' (#123) from improve into master

Reviewed-on: #123

README.md

@@ -1,2 +1,9 @@
-# broker-kgo
+# micro-broker-kgo
+yet another micro kafka broker alternative
 
+TODO:
+* dont always append options from context on Init and New
+* add SubscriberOptions(...kgo.Opt)
+* add ServerSubscribeOptions(...kgo.Opt)
+* check PublisherOptions(...kgo.Opt)
+* check ClientPublisherOptions(...kgo.Opt)

carrier.go

@@ -1,53 +0,0 @@
-package kgo
-
-import (
-	"github.com/twmb/franz-go/pkg/kgo"
-)
-
-// RecordCarrier injects and extracts traces from a kgo.Record.
-//
-// This type exists to satisfy the otel/propagation.TextMapCarrier interface.
-type RecordCarrier struct {
-	record *kgo.Record
-}
-
-// NewRecordCarrier creates a new RecordCarrier.
-func NewRecordCarrier(record *kgo.Record) RecordCarrier {
-	return RecordCarrier{record: record}
-}
-
-// Get retrieves a single value for a given key if it exists.
-func (c RecordCarrier) Get(key string) string {
-	for _, h := range c.record.Headers {
-		if h.Key == key {
-			return string(h.Value)
-		}
-	}
-	return ""
-}
-
-// Set sets a header.
-func (c RecordCarrier) Set(key, val string) {
-	// Check if key already exists.
-	for i, h := range c.record.Headers {
-		if h.Key == key {
-			// Key exist, update the value.
-			c.record.Headers[i].Value = []byte(val)
-			return
-		}
-	}
-	// Key does not exist, append new header.
-	c.record.Headers = append(c.record.Headers, kgo.RecordHeader{
-		Key:   key,
-		Value: []byte(val),
-	})
-}
-
-// Keys returns a slice of all key identifiers in the carrier.
-func (c RecordCarrier) Keys() []string {
-	out := make([]string, len(c.record.Headers))
-	for i, h := range c.record.Headers {
-		out[i] = h.Key
-	}
-	return out
-}

event.go

@@ -3,7 +3,7 @@ package kgo
 import (
 	"sync"
 
-	"go.unistack.org/micro/v3/broker"
+	"go.unistack.org/micro/v4/broker"
 )
 
 type event struct {

go.mod

@@ -1,21 +1,14 @@
-module go.unistack.org/micro-broker-kgo/v3
+module go.unistack.org/micro-broker-kgo/v4
 
 go 1.19
 
 require (
-	github.com/google/uuid v1.6.0
+	github.com/twmb/franz-go v1.11.5
-	github.com/twmb/franz-go v1.16.1
+	go.unistack.org/micro/v4 v4.0.1
-	github.com/twmb/franz-go/pkg/kmsg v1.7.0
-	go.opentelemetry.io/otel v1.24.0
-	go.unistack.org/micro/v3 v3.10.46
 )
 
 require (
-	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/klauspost/compress v1.15.9 // indirect
-	github.com/klauspost/compress v1.17.7 // indirect
+	github.com/pierrec/lz4/v4 v4.1.15 // indirect
-	github.com/pierrec/lz4/v4 v4.1.21 // indirect
+	github.com/twmb/franz-go/pkg/kmsg v1.3.0 // indirect
-	golang.org/x/sys v0.18.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20240304212257-790db918fca8 // indirect
-	google.golang.org/grpc v1.62.1 // indirect
-	google.golang.org/protobuf v1.33.0 // indirect
 )

go.sum

@@ -1,32 +1,18 @@
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/klauspost/compress v1.15.9 h1:wKRjX6JRtDdrE9qwa4b/Cip7ACOshUI4smpCQanqjSY=
-github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
+github.com/klauspost/compress v1.15.9/go.mod h1:PhcZ0MbTNciWF3rruxRgKxI5NkcHHrHUDtV4Yw2GlzU=
-github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps=
+github.com/pierrec/lz4/v4 v4.1.15 h1:MO0/ucJhngq7299dKLwIMtgTfbkoSPF6AoMYDd8Q4q0=
-github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/pierrec/lz4/v4 v4.1.15/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=
-github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/twmb/franz-go v1.11.5 h1:TTv5lVJd+87XkmP9dWN9Jgpf7IUUr7a7jee+byR8LBE=
-github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/twmb/franz-go v1.11.5/go.mod h1:FvaHNlpT6woVYIl6LAuIeL7yHol1Fp6Gv2Dn21AvH78=
-github.com/klauspost/compress v1.17.7 h1:ehO88t2UGzQK66LMdE8tibEd1ErmzZjNEqWkjLAKQQg=
+github.com/twmb/franz-go/pkg/kmsg v1.3.0 h1:ouBETB7nTqRxiO5E8/pySoFZtVEW2VWw55z3/bsUzTw=
-github.com/klauspost/compress v1.17.7/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
+github.com/twmb/franz-go/pkg/kmsg v1.3.0/go.mod h1:SxG/xJKhgPu25SamAq0rrucfp7lbzCpEXOC+vH/ELrY=
-github.com/pierrec/lz4/v4 v4.1.21 h1:yOVMLb6qSIDP67pl/5F7RepeKYu/VmTyEXvuMI5d9mQ=
+go.unistack.org/micro/v4 v4.0.1 h1:xo1IxbVfgh8i0eY0VeYa3cbb13u5n/Mxnp3FOgWD4Jo=
-github.com/pierrec/lz4/v4 v4.1.21/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=
+go.unistack.org/micro/v4 v4.0.1/go.mod h1:p/J5UcSJjfHsWGT31uKoghQ5rUQZzQJBAFy+Z4+ZVMs=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+golang.org/x/crypto v0.0.0-20220817201139-bc19a97f63c8/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
-github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-github.com/twmb/franz-go v1.16.1 h1:rpWc7fB9jd7TgmCyfxzenBI+QbgS8ZfJOUQE+tzPtbE=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-github.com/twmb/franz-go v1.16.1/go.mod h1:/pER254UPPGp/4WfGqRi+SIRGE50RSQzVubQp6+N4FA=
+golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-github.com/twmb/franz-go/pkg/kmsg v1.7.0 h1:a457IbvezYfA5UkiBvyV3zj0Is3y1i8EJgqjJYoij2E=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-github.com/twmb/franz-go/pkg/kmsg v1.7.0/go.mod h1:se9Mjdt0Nwzc9lnjJ0HyDtLyBnaBDAd7pCje47OhSyw=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-go.opentelemetry.io/otel v1.24.0 h1:0LAOdjNmQeSTzGBzduGe/rU4tZhMwL5rWgtp9Ku5Jfo=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-go.opentelemetry.io/otel v1.24.0/go.mod h1:W7b9Ozg4nkF5tWI5zsXkaKKDjdVjpD4oAt9Qi/MArHo=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-go.unistack.org/micro/v3 v3.10.46 h1:rnuEqiFkerwJmKzHmHBXRgxFemZustxWz2hRNLQQ8cU=
-go.unistack.org/micro/v3 v3.10.46/go.mod h1:erMgt3Bl7vQQ0e9UpQyR5NlLiZ9pKeEJ9+1tfYFaqUg=
-golang.org/x/crypto v0.17.0 h1:r8bRNjWL3GshPW3gkd+RpvzWrZAwPS49OmTGZ/uhM4k=
-golang.org/x/net v0.20.0 h1:aCL9BSgETF1k+blQaYUBx9hJ9LOGP3gAVemcZlf1Kpo=
-golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
-golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20240304212257-790db918fca8 h1:IR+hp6ypxjH24bkMfEJ0yHR21+gwPWdV+/IBrPQyn3k=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20240304212257-790db918fca8/go.mod h1:UCOku4NytXMJuLQE5VuqA5lX3PcHCBo8pxNyvkf4xBs=
-google.golang.org/grpc v1.62.1 h1:B4n+nfKzOICUXMgyrNd19h/I9oH0L1pizfk1d4zSgTk=
-google.golang.org/grpc v1.62.1/go.mod h1:IWTG0VlJLCh1SkC58F7np9ka9mx/WNkjl4PGJaiq+QE=
-google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
-google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
-gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

kadmtest.go

@@ -1,65 +0,0 @@
-//go:build ignore
-
-package main
-
-import (
-	"context"
-	"fmt"
-	"os"
-	"time"
-
-	"github.com/twmb/franz-go/pkg/kadm"
-	"github.com/twmb/franz-go/pkg/kgo"
-	"github.com/twmb/franz-go/pkg/kversion"
-
-	//"github.com/twmb/franz-go/pkg/sasl/scram"
-	"github.com/twmb/franz-go/pkg/sasl/plain"
-)
-
-func die(msg string, args ...any) {
-	fmt.Fprintf(os.Stderr, msg, args...)
-	os.Exit(1)
-}
-
-func main() {
-	seeds := []string{"vm-kafka-ump01tn.mbrd.ru:9092", "vm-kafka-ump02tn.mbrd.ru:9092", "vm-kafka-ump03tn.mbrd.ru:9092"}
-
-	pass := "XXXXX"
-	user := "XXXXX"
-
-	var adminClient *kadm.Client
-	{
-		client, err := kgo.NewClient(
-			kgo.SeedBrokers(seeds...),
-			// kgo.SASL((scram.Auth{User: user, Pass: pass}).AsSha512Mechanism()),
-			kgo.SASL((plain.Auth{User: user, Pass: pass}).AsMechanism()),
-
-			// Do not try to send requests newer than 2.4.0 to avoid breaking changes in the request struct.
-			// Sometimes there are breaking changes for newer versions where more properties are required to set.
-			kgo.MaxVersions(kversion.V2_4_0()),
-		)
-		if err != nil {
-			panic(err)
-		}
-		defer client.Close()
-
-		adminClient = kadm.NewClient(client)
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
-	defer cancel()
-
-	dg, err := adminClient.DescribeGroups(ctx, "interestrate_loader")
-	if err != nil {
-		die("failed to describe group: %v", err)
-	}
-
-	for _, m := range dg["interestrate_loader"].Members {
-		mc, _ := m.Assigned.AsConsumer()
-		for _, mt := range mc.Topics {
-			for _, p := range mt.Partitions {
-				fmt.Printf("client:%s\tpartitions: %d\n", m.ClientID, p)
-			}
-		}
-	}
-}

kgo.go

@@ -1,5 +1,5 @@
 // Package kgo provides a kafka broker using kgo
-package kgo
+package kgo // import "go.unistack.org/micro-broker-kgo/v4"
 
 import (
 	"context"
@@ -10,16 +10,14 @@ import (
 	"sync"
 	"time"
 
-	"github.com/google/uuid"
 	"github.com/twmb/franz-go/pkg/kgo"
-	"github.com/twmb/franz-go/pkg/kmsg"
+	"go.unistack.org/micro/v4/broker"
-	"go.unistack.org/micro/v3/broker"
+	"go.unistack.org/micro/v4/metadata"
-	"go.unistack.org/micro/v3/metadata"
+	id "go.unistack.org/micro/v4/util/id"
-	"go.unistack.org/micro/v3/tracer"
+	mrand "go.unistack.org/micro/v4/util/rand"
-	mrand "go.unistack.org/micro/v3/util/rand"
 )
 
-var _ broker.Broker = (*Broker)(nil)
+var _ broker.Broker = &Broker{}
 
 var ErrLostMessage = errors.New("message not marked for offsets commit and will be lost in next iteration")
 
@@ -54,7 +52,6 @@ var DefaultRetryBackoffFn = func() func(int) time.Duration {
 }()
 
 type Broker struct {
-	init      bool
 	c         *kgo.Client
 	kopts     []kgo.Opt
 	connected bool
@@ -74,31 +71,9 @@ func (k *Broker) Name() string {
 func (k *Broker) connect(ctx context.Context, opts ...kgo.Opt) (*kgo.Client, error) {
 	var c *kgo.Client
 	var err error
-	var span tracer.Span
-	ctx, span = k.opts.Tracer.Start(ctx, "Connect")
-	defer span.Finish()
-
-	clientID := "kgo"
-	group := ""
-	if k.opts.Context != nil {
-		if id, ok := k.opts.Context.Value(clientIDKey{}).(string); ok {
-			clientID = id
-		}
-		if id, ok := k.opts.Context.Value(groupKey{}).(string); ok {
-			group = id
-		}
-	}
-
-	opts = append(opts,
-		kgo.WithHooks(&hookMeter{meter: k.opts.Meter}),
-		kgo.WithHooks(&hookTracer{group: group, clientID: clientID, tracer: k.opts.Tracer}),
-	)
 
 	select {
 	case <-ctx.Done():
-		if ctx.Err() != nil {
-			span.SetStatus(tracer.SpanStatusError, ctx.Err().Error())
-		}
 		return nil, ctx.Err()
 	default:
 		c, err = kgo.NewClient(opts...)
@@ -106,7 +81,6 @@ func (k *Broker) connect(ctx context.Context, opts ...kgo.Opt) (*kgo.Client, err
 			err = c.Ping(ctx) // check connectivity to cluster
 		}
 		if err != nil {
-			span.SetStatus(tracer.SpanStatusError, err.Error())
 			return nil, err
 		}
 	}
@@ -151,9 +125,6 @@ func (k *Broker) Disconnect(ctx context.Context) error {
 	if ctx != nil {
 		nctx = ctx
 	}
-	var span tracer.Span
-	ctx, span = k.opts.Tracer.Start(ctx, "Disconnect")
-	defer span.Finish()
 
 	k.Lock()
 	defer k.Unlock()
@@ -162,9 +133,6 @@ func (k *Broker) Disconnect(ctx context.Context) error {
 		return nctx.Err()
 	default:
 		for _, sub := range k.subs {
-			if sub.closed {
-				continue
-			}
 			if err := sub.Unsubscribe(ctx); err != nil {
 				return err
 			}
@@ -183,10 +151,6 @@ func (k *Broker) Init(opts ...broker.Option) error {
 	k.Lock()
 	defer k.Unlock()
 
-	if len(opts) == 0 && k.init {
-		return nil
-	}
-
 	for _, o := range opts {
 		o(&k.opts)
 	}
@@ -210,8 +174,6 @@ func (k *Broker) Init(opts ...broker.Option) error {
 		}
 	}
 
-	k.init = true
-
 	return nil
 }
 
@@ -229,12 +191,10 @@ func (k *Broker) Publish(ctx context.Context, topic string, msg *broker.Message,
 }
 
 func (k *Broker) publish(ctx context.Context, msgs []*broker.Message, opts ...broker.PublishOption) error {
-	var span tracer.Span
+	k.RLock()
-	ctx, span = k.opts.Tracer.Start(ctx, "Publish")
-	defer span.Finish()
-
-	k.Lock()
 	if !k.connected {
+		k.RUnlock()
+		k.Lock()
 		c, err := k.connect(ctx, k.kopts...)
 		if err != nil {
 			k.Unlock()
@@ -242,8 +202,9 @@ func (k *Broker) publish(ctx context.Context, msgs []*broker.Message, opts ...br
 		}
 		k.c = c
 		k.connected = true
+		k.Unlock()
 	}
-	k.Unlock()
+	k.RUnlock()
 
 	options := broker.NewPublishOptions(opts...)
 	records := make([]*kgo.Record, 0, len(msgs))
@@ -264,9 +225,10 @@ func (k *Broker) publish(ctx context.Context, msgs []*broker.Message, opts ...br
 	for _, msg := range msgs {
 		rec := &kgo.Record{Context: ctx, Key: key}
 		rec.Topic, _ = msg.Header.Get(metadata.HeaderTopic)
-		msg.Header.Del(metadata.HeaderTopic)
+		k.opts.Meter.Counter(broker.PublishMessageInflight, "endpoint", rec.Topic).Inc()
-		// k.opts.Meter.Counter(broker.PublishMessageInflight, "endpoint", rec.Topic).Inc()
+		if options.BodyOnly {
-		if options.BodyOnly || k.opts.Codec.String() == "noop" {
+			rec.Value = msg.Body
+		} else if k.opts.Codec.String() == "noop" {
 			rec.Value = msg.Body
 			for k, v := range msg.Header {
 				rec.Headers = append(rec.Headers, kgo.RecordHeader{Key: k, Value: []byte(v)})
@@ -281,35 +243,35 @@ func (k *Broker) publish(ctx context.Context, msgs []*broker.Message, opts ...br
 	}
 
 	if promise != nil {
-		// ts := time.Now()
+		ts := time.Now()
 		for _, rec := range records {
 			k.c.Produce(ctx, rec, func(r *kgo.Record, err error) {
-				// te := time.Since(ts)
+				te := time.Since(ts)
-				//	k.opts.Meter.Counter(broker.PublishMessageInflight, "endpoint", rec.Topic).Dec()
+				k.opts.Meter.Counter(broker.PublishMessageInflight, "endpoint", rec.Topic).Dec()
-				//	k.opts.Meter.Summary(broker.PublishMessageLatencyMicroseconds, "endpoint", r.Topic).Update(te.Seconds())
+				k.opts.Meter.Summary(broker.PublishMessageLatencyMicroseconds, "endpoint", r.Topic).Update(te.Seconds())
-				//	k.opts.Meter.Histogram(broker.PublishMessageDurationSeconds, "endpoint", r.Topic).Update(te.Seconds())
+				k.opts.Meter.Histogram(broker.PublishMessageDurationSeconds, "endpoint", r.Topic).Update(te.Seconds())
 				if err != nil {
-					//	k.opts.Meter.Counter(broker.PublishMessageTotal, "endpoint", r.Topic, "status", "failure").Inc()
+					k.opts.Meter.Counter(broker.PublishMessageTotal, "endpoint", r.Topic, "status", "failure").Inc()
 				} else {
-					// k.opts.Meter.Counter(broker.PublishMessageTotal, "endpoint", r.Topic, "status", "success").Inc()
+					k.opts.Meter.Counter(broker.PublishMessageTotal, "endpoint", r.Topic, "status", "success").Inc()
 				}
 				promise(r, err)
 			})
 		}
 		return nil
 	}
-	// ts := time.Now()
+	ts := time.Now()
 	results := k.c.ProduceSync(ctx, records...)
-	// te := time.Since(ts)
+	te := time.Since(ts)
 	for _, result := range results {
-		//	k.opts.Meter.Summary(broker.PublishMessageLatencyMicroseconds, "endpoint", result.Record.Topic).Update(te.Seconds())
+		k.opts.Meter.Summary(broker.PublishMessageLatencyMicroseconds, "endpoint", result.Record.Topic).Update(te.Seconds())
-		//	k.opts.Meter.Histogram(broker.PublishMessageDurationSeconds, "endpoint", result.Record.Topic).Update(te.Seconds())
+		k.opts.Meter.Histogram(broker.PublishMessageDurationSeconds, "endpoint", result.Record.Topic).Update(te.Seconds())
-		///		k.opts.Meter.Counter(broker.PublishMessageInflight, "endpoint", result.Record.Topic).Dec()
+		k.opts.Meter.Counter(broker.PublishMessageInflight, "endpoint", result.Record.Topic).Dec()
 		if result.Err != nil {
-			//			k.opts.Meter.Counter(broker.PublishMessageTotal, "endpoint", result.Record.Topic, "status", "failure").Inc()
+			k.opts.Meter.Counter(broker.PublishMessageTotal, "endpoint", result.Record.Topic, "status", "failure").Inc()
 			errs = append(errs, result.Err.Error())
 		} else {
-			//			k.opts.Meter.Counter(broker.PublishMessageTotal, "endpoint", result.Record.Topic, "status", "success").Inc()
+			k.opts.Meter.Counter(broker.PublishMessageTotal, "endpoint", result.Record.Topic, "status", "success").Inc()
 		}
 	}
 
@@ -328,11 +290,11 @@ func (k *Broker) Subscribe(ctx context.Context, topic string, handler broker.Han
 	options := broker.NewSubscribeOptions(opts...)
 
 	if options.Group == "" {
-		uid, err := uuid.NewRandom()
+		uid, err := id.New()
 		if err != nil {
 			return nil, err
 		}
-		options.Group = uid.String()
+		options.Group = uid
 	}
 
 	commitInterval := DefaultCommitInterval
@@ -374,18 +336,6 @@ func (k *Broker) Subscribe(ctx context.Context, topic string, handler broker.Han
 		return nil, err
 	}
 
-	mdreq := kmsg.NewMetadataRequest()
-	mdreq.Topics = []kmsg.MetadataRequestTopic{
-		{Topic: &topic},
-	}
-
-	mdrsp, err := mdreq.RequestWith(ctx, c)
-	if err != nil {
-		return nil, err
-	} else if mdrsp.Topics[0].ErrorCode != 0 {
-		return nil, fmt.Errorf("topic %s not exists or permission error", topic)
-	}
-
 	sub.c = c
 	go sub.poll(ctx)
 
@@ -413,6 +363,8 @@ func NewBroker(opts ...broker.Option) *Broker {
 		kgo.DisableIdempotentWrite(),
 		kgo.ProducerBatchCompression(kgo.NoCompression()),
 		kgo.WithLogger(&mlogger{l: options.Logger, ctx: options.Context}),
+		// kgo.WithLogger(kgo.BasicLogger(os.Stderr, kgo.LogLevelDebug, func() string { return time.Now().Format(time.StampMilli) })),
+		kgo.WithHooks(&metrics{meter: options.Meter}),
 		kgo.SeedBrokers(kaddrs...),
 		kgo.RetryBackoffFn(DefaultRetryBackoffFn),
 		kgo.BlockRebalanceOnPoll(),

kgo_test.go

@@ -10,10 +10,10 @@ import (
 	"time"
 
 	kg "github.com/twmb/franz-go/pkg/kgo"
-	kgo "go.unistack.org/micro-broker-kgo/v3"
+	kgo "go.unistack.org/micro-broker-kgo/v4"
-	"go.unistack.org/micro/v3/broker"
+	"go.unistack.org/micro/v4/broker"
-	"go.unistack.org/micro/v3/logger"
+	"go.unistack.org/micro/v4/logger"
-	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v4/metadata"
 )
 
 var (

logger.go

@@ -2,9 +2,10 @@ package kgo
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/twmb/franz-go/pkg/kgo"
-	"go.unistack.org/micro/v3/logger"
+	"go.unistack.org/micro/v4/logger"
 )
 
 type mlogger struct {
@@ -29,7 +30,11 @@ func (l *mlogger) Log(lvl kgo.LogLevel, msg string, args ...interface{}) {
 		return
 	}
 	if len(args) > 0 {
-		l.l.Log(l.ctx, mlvl, append([]interface{}{msg}, args...)...)
+		fields := make(map[string]interface{}, int(len(args)/2))
+		for i := 0; i <= len(args)/2; i += 2 {
+			fields[fmt.Sprintf("%v", args[i])] = args[i+1]
+		}
+		l.l.Fields(fields).Log(l.ctx, mlvl, msg)
 	} else {
 		l.l.Log(l.ctx, mlvl, msg)
 	}

metrics.go

@@ -6,22 +6,57 @@ import (
 	"time"
 
 	"github.com/twmb/franz-go/pkg/kgo"
-	"go.unistack.org/micro/v3/meter"
+	"go.unistack.org/micro/v4/meter"
 )
 
-type hookMeter struct {
+/*
+	func NewServerSubscriberWrapper(opts ...Option) server.SubscriberWrapper {
+		handler := &wrapper{
+			opts: NewOptions(opts...),
+		}
+		return handler.SubscriberFunc
+	}
+
+	func (w *wrapper) SubscriberFunc(fn server.SubscriberFunc) server.SubscriberFunc {
+		return func(ctx context.Context, msg server.Message) error {
+			endpoint := msg.Topic()
+
+			labels := make([]string, 0, 4)
+			labels = append(labels, labelEndpoint, endpoint)
+
+			w.opts.Meter.Counter(SubscribeMessageInflight, labels...).Inc()
+			ts := time.Now()
+			err := fn(ctx, msg)
+			te := time.Since(ts)
+			w.opts.Meter.Counter(SubscribeMessageInflight, labels...).Dec()
+
+			w.opts.Meter.Summary(SubscribeMessageLatencyMicroseconds, labels...).Update(te.Seconds())
+			w.opts.Meter.Histogram(SubscribeMessageDurationSeconds, labels...).Update(te.Seconds())
+
+			if err == nil {
+				labels = append(labels, labelStatus, labelSuccess)
+			} else {
+				labels = append(labels, labelStatus, labelFailure)
+			}
+			w.opts.Meter.Counter(SubscribeMessageTotal, labels...).Inc()
+
+			return err
+		}
+	}
+*/
+type metrics struct {
 	meter meter.Meter
 }
 
 var (
-	_ kgo.HookBrokerConnect       = &hookMeter{}
+	_ kgo.HookBrokerConnect       = &metrics{}
-	_ kgo.HookBrokerDisconnect    = &hookMeter{}
+	_ kgo.HookBrokerDisconnect    = &metrics{}
-	_ kgo.HookBrokerRead          = &hookMeter{}
+	_ kgo.HookBrokerRead          = &metrics{}
-	_ kgo.HookBrokerThrottle      = &hookMeter{}
+	_ kgo.HookBrokerThrottle      = &metrics{}
-	_ kgo.HookBrokerWrite         = &hookMeter{}
+	_ kgo.HookBrokerWrite         = &metrics{}
-	_ kgo.HookFetchBatchRead      = &hookMeter{}
+	_ kgo.HookFetchBatchRead      = &metrics{}
-	_ kgo.HookProduceBatchWritten = &hookMeter{}
+	_ kgo.HookProduceBatchWritten = &metrics{}
-	_ kgo.HookGroupManageError    = &hookMeter{}
+	_ kgo.HookGroupManageError    = &metrics{}
 )
 
 const (
@@ -54,11 +89,11 @@ const (
 	labelTopic   = "topic"
 )
 
-func (m *hookMeter) OnGroupManageError(err error) {
+func (m *metrics) OnGroupManageError(err error) {
 	m.meter.Counter(metricBrokerGroupErrors).Inc()
 }
 
-func (m *hookMeter) OnBrokerConnect(meta kgo.BrokerMetadata, _ time.Duration, _ net.Conn, err error) {
+func (m *metrics) OnBrokerConnect(meta kgo.BrokerMetadata, _ time.Duration, _ net.Conn, err error) {
 	node := strconv.Itoa(int(meta.NodeID))
 	if err != nil {
 		m.meter.Counter(metricBrokerConnects, labelNode, node, labelStatus, labelFaulure).Inc()
@@ -67,12 +102,12 @@ func (m *hookMeter) OnBrokerConnect(meta kgo.BrokerMetadata, _ time.Duration, _
 	m.meter.Counter(metricBrokerConnects, labelNode, node, labelStatus, labelSuccess).Inc()
 }
 
-func (m *hookMeter) OnBrokerDisconnect(meta kgo.BrokerMetadata, _ net.Conn) {
+func (m *metrics) OnBrokerDisconnect(meta kgo.BrokerMetadata, _ net.Conn) {
 	node := strconv.Itoa(int(meta.NodeID))
 	m.meter.Counter(metricBrokerDisconnects, labelNode, node).Inc()
 }
 
-func (m *hookMeter) OnBrokerWrite(meta kgo.BrokerMetadata, _ int16, bytesWritten int, writeWait, timeToWrite time.Duration, err error) {
+func (m *metrics) OnBrokerWrite(meta kgo.BrokerMetadata, _ int16, bytesWritten int, writeWait, timeToWrite time.Duration, err error) {
 	node := strconv.Itoa(int(meta.NodeID))
 	if err != nil {
 		m.meter.Counter(metricBrokerWriteErrors, labelNode, node).Inc()
@@ -83,7 +118,7 @@ func (m *hookMeter) OnBrokerWrite(meta kgo.BrokerMetadata, _ int16, bytesWritten
 	m.meter.Histogram(metricBrokerWriteLatencies, labelNode, node).Update(timeToWrite.Seconds())
 }
 
-func (m *hookMeter) OnBrokerRead(meta kgo.BrokerMetadata, _ int16, bytesRead int, readWait, timeToRead time.Duration, err error) {
+func (m *metrics) OnBrokerRead(meta kgo.BrokerMetadata, _ int16, bytesRead int, readWait, timeToRead time.Duration, err error) {
 	node := strconv.Itoa(int(meta.NodeID))
 	if err != nil {
 		m.meter.Counter(metricBrokerReadErrors, labelNode, node).Inc()
@@ -95,18 +130,18 @@ func (m *hookMeter) OnBrokerRead(meta kgo.BrokerMetadata, _ int16, bytesRead int
 	m.meter.Histogram(metricBrokerReadLatencies, labelNode, node).Update(timeToRead.Seconds())
 }
 
-func (m *hookMeter) OnBrokerThrottle(meta kgo.BrokerMetadata, throttleInterval time.Duration, _ bool) {
+func (m *metrics) OnBrokerThrottle(meta kgo.BrokerMetadata, throttleInterval time.Duration, _ bool) {
 	node := strconv.Itoa(int(meta.NodeID))
 	m.meter.Histogram(metricBrokerThrottleLatencies, labelNode, node).Update(throttleInterval.Seconds())
 }
 
-func (m *hookMeter) OnProduceBatchWritten(meta kgo.BrokerMetadata, topic string, _ int32, kmetrics kgo.ProduceBatchMetrics) {
+func (m *metrics) OnProduceBatchWritten(meta kgo.BrokerMetadata, topic string, _ int32, kmetrics kgo.ProduceBatchMetrics) {
 	node := strconv.Itoa(int(meta.NodeID))
 	m.meter.Counter(metricBrokerProduceBytesUncompressed, labelNode, node, labelTopic, topic).Add(kmetrics.UncompressedBytes)
 	m.meter.Counter(metricBrokerProduceBytesCompressed, labelNode, node, labelTopic, topic).Add(kmetrics.CompressedBytes)
 }
 
-func (m *hookMeter) OnFetchBatchRead(meta kgo.BrokerMetadata, topic string, _ int32, kmetrics kgo.FetchBatchMetrics) {
+func (m *metrics) OnFetchBatchRead(meta kgo.BrokerMetadata, topic string, _ int32, kmetrics kgo.FetchBatchMetrics) {
 	node := strconv.Itoa(int(meta.NodeID))
 	m.meter.Counter(metricBrokerFetchBytesUncompressed, labelNode, node, labelTopic, topic).Add(kmetrics.UncompressedBytes)
 	m.meter.Counter(metricBrokerFetchBytesCompressed, labelNode, node, labelTopic, topic).Add(kmetrics.CompressedBytes)

options.go

@@ -5,8 +5,8 @@ import (
 	"time"
 
 	"github.com/twmb/franz-go/pkg/kgo"
-	"go.unistack.org/micro/v3/broker"
+	"go.unistack.org/micro/v4/broker"
-	"go.unistack.org/micro/v3/client"
+	"go.unistack.org/micro/v4/client"
 )
 
 // DefaultCommitInterval specifies how fast send commit offsets to kafka
@@ -63,18 +63,6 @@ func SubscribeOptions(opts ...kgo.Opt) broker.SubscribeOption {
 	}
 }
 
-type clientIDKey struct{}
-
-func ClientID(id string) broker.Option {
-	return broker.SetOption(clientIDKey{}, id)
-}
-
-type groupKey struct{}
-
-func Group(id string) broker.Option {
-	return broker.SetOption(groupKey{}, id)
-}
-
 type commitIntervalKey struct{}
 
 // CommitInterval specifies interval to send commits

subscriber.go

@@ -3,11 +3,12 @@ package kgo
 import (
 	"context"
 	"sync"
+	"time"
 
 	"github.com/twmb/franz-go/pkg/kgo"
-	"go.unistack.org/micro/v3/broker"
+	"go.unistack.org/micro/v4/broker"
-	"go.unistack.org/micro/v3/logger"
+	"go.unistack.org/micro/v4/logger"
-	"go.unistack.org/micro/v3/metadata"
+	"go.unistack.org/micro/v4/metadata"
 )
 
 type tp struct {
@@ -52,19 +53,11 @@ func (s *subscriber) Unsubscribe(ctx context.Context) error {
 		return nil
 	}
 	select {
-	// case <-ctx.Done():
+	case <-ctx.Done():
-	//	return ctx.Err()
+		return ctx.Err()
 	default:
-		s.c.PauseFetchTopics(s.topic)
-		s.c.CloseAllowingRebalance()
-		kc := make(map[string][]int32)
-		for ctp := range s.consumers {
-			kc[ctp.t] = append(kc[ctp.t], ctp.p)
-		}
-		s.killConsumers(ctx, kc)
 		close(s.done)
 		s.closed = true
-		s.c.ResumeFetchTopics(s.topic)
 	}
 	return nil
 }
@@ -79,13 +72,15 @@ func (s *subscriber) poll(ctx context.Context) {
 	for {
 		select {
 		case <-ctx.Done():
-			s.c.CloseAllowingRebalance()
+			s.c.Close()
 			return
 		case <-s.done:
+			s.c.Close()
 			return
 		default:
 			fetches := s.c.PollRecords(ctx, maxInflight)
-			if !s.closed && fetches.IsClientClosed() {
+			if fetches.IsClientClosed() {
+				s.kopts.Logger.Errorf(ctx, "[kgo] client closed")
 				s.closed = true
 				return
 			}
@@ -142,7 +137,7 @@ func (s *subscriber) assigned(_ context.Context, c *kgo.Client, assigned map[str
 
 				quit:    make(chan struct{}),
 				done:    make(chan struct{}),
-				recs:    make(chan kgo.FetchTopicPartition, 100),
+				recs:    make(chan kgo.FetchTopicPartition, 4),
 				handler: s.handler,
 				kopts:   s.kopts,
 				opts:    s.opts,
@@ -169,30 +164,30 @@ func (pc *consumer) consume() {
 			return
 		case p := <-pc.recs:
 			for _, record := range p.Records {
-				// ts := time.Now()
+				ts := time.Now()
-				//	pc.kopts.Meter.Counter(broker.SubscribeMessageInflight, "endpoint", record.Topic).Inc()
+				pc.kopts.Meter.Counter(broker.SubscribeMessageInflight, "endpoint", record.Topic).Inc()
 				p := eventPool.Get().(*event)
 				p.msg.Header = nil
 				p.msg.Body = nil
 				p.topic = record.Topic
 				p.err = nil
 				p.ack = false
-				p.msg.Header = metadata.New(len(record.Headers))
-				for _, hdr := range record.Headers {
-					p.msg.Header.Set(hdr.Key, string(hdr.Value))
-				}
 				if pc.kopts.Codec.String() == "noop" {
+					p.msg.Header = metadata.New(len(record.Headers))
+					for _, hdr := range record.Headers {
+						p.msg.Header.Set(hdr.Key, string(hdr.Value))
+					}
 					p.msg.Body = record.Value
 				} else if pc.opts.BodyOnly {
 					p.msg.Body = record.Value
 				} else {
 					if err := pc.kopts.Codec.Unmarshal(record.Value, p.msg); err != nil {
-						//	pc.kopts.Meter.Counter(broker.SubscribeMessageTotal, "endpoint", record.Topic, "status", "failure").Inc()
+						pc.kopts.Meter.Counter(broker.SubscribeMessageTotal, "endpoint", record.Topic, "status", "failure").Inc()
 						p.err = err
 						p.msg.Body = record.Value
 						if eh != nil {
 							_ = eh(p)
-							//	pc.kopts.Meter.Counter(broker.SubscribeMessageInflight, "endpoint", record.Topic).Dec()
+							pc.kopts.Meter.Counter(broker.SubscribeMessageInflight, "endpoint", record.Topic).Dec()
 							if p.ack {
 								pc.c.MarkCommitRecords(record)
 							} else {
@@ -201,19 +196,19 @@ func (pc *consumer) consume() {
 								return
 							}
 							eventPool.Put(p)
-							// te := time.Since(ts)
+							te := time.Since(ts)
-							//	pc.kopts.Meter.Summary(broker.SubscribeMessageLatencyMicroseconds, "endpoint", record.Topic).Update(te.Seconds())
+							pc.kopts.Meter.Summary(broker.SubscribeMessageLatencyMicroseconds, "endpoint", record.Topic).Update(te.Seconds())
-							//	pc.kopts.Meter.Histogram(broker.SubscribeMessageDurationSeconds, "endpoint", record.Topic).Update(te.Seconds())
+							pc.kopts.Meter.Histogram(broker.SubscribeMessageDurationSeconds, "endpoint", record.Topic).Update(te.Seconds())
 							continue
 						} else {
 							if pc.kopts.Logger.V(logger.ErrorLevel) {
 								pc.kopts.Logger.Errorf(pc.kopts.Context, "[kgo]: failed to unmarshal: %v", err)
 							}
 						}
-						//		te := time.Since(ts)
+						te := time.Since(ts)
-						//		pc.kopts.Meter.Counter(broker.SubscribeMessageInflight, "endpoint", record.Topic).Dec()
+						pc.kopts.Meter.Counter(broker.SubscribeMessageInflight, "endpoint", record.Topic).Dec()
-						//		pc.kopts.Meter.Summary(broker.SubscribeMessageLatencyMicroseconds, "endpoint", record.Topic).Update(te.Seconds())
+						pc.kopts.Meter.Summary(broker.SubscribeMessageLatencyMicroseconds, "endpoint", record.Topic).Update(te.Seconds())
-						//			pc.kopts.Meter.Histogram(broker.SubscribeMessageDurationSeconds, "endpoint", record.Topic).Update(te.Seconds())
+						pc.kopts.Meter.Histogram(broker.SubscribeMessageDurationSeconds, "endpoint", record.Topic).Update(te.Seconds())
 						eventPool.Put(p)
 						pc.kopts.Logger.Fatalf(pc.kopts.Context, "[kgo] Unmarshal err not handled wtf?")
 						return
@@ -221,11 +216,11 @@ func (pc *consumer) consume() {
 				}
 				err := pc.handler(p)
 				if err == nil {
-					//	pc.kopts.Meter.Counter(broker.SubscribeMessageTotal, "endpoint", record.Topic, "status", "success").Inc()
+					pc.kopts.Meter.Counter(broker.SubscribeMessageTotal, "endpoint", record.Topic, "status", "success").Inc()
 				} else {
-					//	pc.kopts.Meter.Counter(broker.SubscribeMessageTotal, "endpoint", record.Topic, "status", "failure").Inc()
+					pc.kopts.Meter.Counter(broker.SubscribeMessageTotal, "endpoint", record.Topic, "status", "failure").Inc()
 				}
-				// pc.kopts.Meter.Counter(broker.SubscribeMessageInflight, "endpoint", record.Topic).Dec()
+				pc.kopts.Meter.Counter(broker.SubscribeMessageInflight, "endpoint", record.Topic).Dec()
 				if err == nil && pc.opts.AutoAck {
 					p.ack = true
 				} else if err != nil {
@@ -238,9 +233,9 @@ func (pc *consumer) consume() {
 						}
 					}
 				}
-				//	te := time.Since(ts)
+				te := time.Since(ts)
-				//	pc.kopts.Meter.Summary(broker.SubscribeMessageLatencyMicroseconds, "endpoint", record.Topic).Update(te.Seconds())
+				pc.kopts.Meter.Summary(broker.SubscribeMessageLatencyMicroseconds, "endpoint", record.Topic).Update(te.Seconds())
-				//	pc.kopts.Meter.Histogram(broker.SubscribeMessageDurationSeconds, "endpoint", record.Topic).Update(te.Seconds())
+				pc.kopts.Meter.Histogram(broker.SubscribeMessageDurationSeconds, "endpoint", record.Topic).Update(te.Seconds())
 				if p.ack {
 					eventPool.Put(p)
 					pc.c.MarkCommitRecords(record)

tracer.go

@@ -1,200 +0,0 @@
-package kgo
-
-import (
-	"context"
-	"net"
-	"time"
-	"unicode/utf8"
-
-	"github.com/twmb/franz-go/pkg/kgo"
-	"go.opentelemetry.io/otel/attribute"
-	semconv "go.opentelemetry.io/otel/semconv/v1.18.0"
-	"go.unistack.org/micro/v3/tracer"
-)
-
-type hookTracer struct {
-	clientID string
-	group    string
-	tracer   tracer.Tracer
-}
-
-var (
-	_ kgo.HookBrokerConnect       = &hookTracer{}
-	_ kgo.HookBrokerDisconnect    = &hookTracer{}
-	_ kgo.HookBrokerRead          = &hookTracer{}
-	_ kgo.HookBrokerThrottle      = &hookTracer{}
-	_ kgo.HookBrokerWrite         = &hookTracer{}
-	_ kgo.HookFetchBatchRead      = &hookTracer{}
-	_ kgo.HookProduceBatchWritten = &hookTracer{}
-	_ kgo.HookGroupManageError    = &hookTracer{}
-)
-
-func (m *hookTracer) OnGroupManageError(err error) {
-}
-
-func (m *hookTracer) OnBrokerConnect(meta kgo.BrokerMetadata, _ time.Duration, _ net.Conn, err error) {
-}
-
-func (m *hookTracer) OnBrokerDisconnect(meta kgo.BrokerMetadata, _ net.Conn) {
-}
-
-func (m *hookTracer) OnBrokerWrite(meta kgo.BrokerMetadata, _ int16, bytesWritten int, writeWait, timeToWrite time.Duration, err error) {
-}
-
-func (m *hookTracer) OnBrokerRead(meta kgo.BrokerMetadata, _ int16, bytesRead int, readWait, timeToRead time.Duration, err error) {
-}
-
-func (m *hookTracer) OnBrokerThrottle(meta kgo.BrokerMetadata, throttleInterval time.Duration, _ bool) {
-}
-
-func (m *hookTracer) OnProduceBatchWritten(meta kgo.BrokerMetadata, topic string, _ int32, kmetrics kgo.ProduceBatchMetrics) {
-}
-
-func (m *hookTracer) OnFetchBatchRead(meta kgo.BrokerMetadata, topic string, _ int32, kmetrics kgo.FetchBatchMetrics) {
-}
-
-// OnProduceRecordBuffered starts a new span for the "publish" operation on a
-// buffered record.
-//
-// It sets span options and injects the span context into record and updates
-// the record's context, so it can be ended in the OnProduceRecordUnbuffered
-// hook.
-func (m *hookTracer) OnProduceRecordBuffered(r *kgo.Record) {
-	// Set up span options.
-	attrs := []attribute.KeyValue{
-		semconv.MessagingSystemKey.String("kafka"),
-		semconv.MessagingDestinationKindTopic,
-		semconv.MessagingDestinationName(r.Topic),
-		semconv.MessagingOperationPublish,
-	}
-	attrs = maybeKeyAttr(attrs, r)
-	if m.clientID != "" {
-		attrs = append(attrs, semconv.MessagingKafkaClientIDKey.String(m.clientID))
-	}
-	opts := []tracer.SpanOption{
-		tracer.WithSpanLabels(attrs...),
-		tracer.WithSpanKind(tracer.SpanKindProducer),
-	}
-	// Start the "publish" span.
-	ctx, _ := m.tracer.Start(r.Context, r.Topic+" publish", opts...)
-	// Inject the span context into the record.
-	// t.propagators.Inject(ctx, NewRecordCarrier(r))
-	// Update the record context.
-	r.Context = ctx
-}
-
-// OnProduceRecordUnbuffered continues and ends the "publish" span for an
-// unbuffered record.
-//
-// It sets attributes with values unset when producing and records any error
-// that occurred during the publish operation.
-func (m *hookTracer) OnProduceRecordUnbuffered(r *kgo.Record, err error) {
-	span, ok := tracer.SpanFromContext(r.Context)
-	if !ok {
-		return
-	}
-	defer span.Finish()
-	span.AddLabels(
-		semconv.MessagingKafkaDestinationPartition(int(r.Partition)),
-	)
-	if err != nil {
-		span.SetStatus(tracer.SpanStatusError, err.Error())
-	}
-}
-
-// OnFetchRecordBuffered starts a new span for the "receive" operation on a
-// buffered record.
-//
-// It sets the span options and extracts the span context from the record,
-// updates the record's context to ensure it can be ended in the
-// OnFetchRecordUnbuffered hook and can be used in downstream consumer
-// processing.
-func (m *hookTracer) OnFetchRecordBuffered(r *kgo.Record) {
-	// Set up the span options.
-	attrs := []attribute.KeyValue{
-		semconv.MessagingSystemKey.String("kafka"),
-		semconv.MessagingSourceKindTopic,
-		semconv.MessagingSourceName(r.Topic),
-		semconv.MessagingOperationReceive,
-		semconv.MessagingKafkaSourcePartition(int(r.Partition)),
-	}
-	attrs = maybeKeyAttr(attrs, r)
-	if m.clientID != "" {
-		attrs = append(attrs, semconv.MessagingKafkaClientIDKey.String(m.clientID))
-	}
-	if m.group != "" {
-		attrs = append(attrs, semconv.MessagingKafkaConsumerGroupKey.String(m.group))
-	}
-	opts := []tracer.SpanOption{
-		tracer.WithSpanLabels(attrs...),
-		tracer.WithSpanKind(tracer.SpanKindConsumer),
-	}
-
-	if r.Context == nil {
-		r.Context = context.Background()
-	}
-	// Extract the span context from the record.
-	// ctx := t.propagators.Extract(r.Context, NewRecordCarrier(r))
-	// Start the "receive" span.
-	newCtx, _ := m.tracer.Start(r.Context, r.Topic+" receive", opts...)
-	// Update the record context.
-	r.Context = newCtx
-}
-
-// OnFetchRecordUnbuffered continues and ends the "receive" span for an
-// unbuffered record.
-func (m *hookTracer) OnFetchRecordUnbuffered(r *kgo.Record, _ bool) {
-	if span, ok := tracer.SpanFromContext(r.Context); ok {
-		defer span.Finish()
-	}
-}
-
-// WithProcessSpan starts a new span for the "process" operation on a consumer
-// record.
-//
-// It sets up the span options. The user's application code is responsible for
-// ending the span.
-//
-// This should only ever be called within a polling loop of a consumed record and
-// not a record which has been created for producing, so call this at the start of each
-// iteration of your processing for the record.
-func (m *hookTracer) WithProcessSpan(r *kgo.Record) (context.Context, tracer.Span) {
-	// Set up the span options.
-	attrs := []attribute.KeyValue{
-		semconv.MessagingSystemKey.String("kafka"),
-		semconv.MessagingSourceKindTopic,
-		semconv.MessagingSourceName(r.Topic),
-		semconv.MessagingOperationProcess,
-		semconv.MessagingKafkaSourcePartition(int(r.Partition)),
-		semconv.MessagingKafkaMessageOffset(int(r.Offset)),
-	}
-	attrs = maybeKeyAttr(attrs, r)
-	if m.clientID != "" {
-		attrs = append(attrs, semconv.MessagingKafkaClientIDKey.String(m.clientID))
-	}
-	if m.group != "" {
-		attrs = append(attrs, semconv.MessagingKafkaConsumerGroupKey.String(m.group))
-	}
-	opts := []tracer.SpanOption{
-		tracer.WithSpanLabels(attrs...),
-		tracer.WithSpanKind(tracer.SpanKindConsumer),
-	}
-
-	if r.Context == nil {
-		r.Context = context.Background()
-	}
-	// Start a new span using the provided context and options.
-	return m.tracer.Start(r.Context, r.Topic+" process", opts...)
-}
-
-func maybeKeyAttr(attrs []attribute.KeyValue, r *kgo.Record) []attribute.KeyValue {
-	if r.Key == nil {
-		return attrs
-	}
-	var keykey string
-	if !utf8.Valid(r.Key) {
-		return attrs
-	}
-	keykey = string(r.Key)
-	return append(attrs, semconv.MessagingKafkaMessageKeyKey.String(keykey))
-}