chore: remove jaeger dependency by deleting with-tracing/main.go, mov…

…ed README

examples/with-tracing/README.md

@@ -32,6 +32,113 @@ You can access the jaeger dashboard as [jaeger dashboard](http://localhost:16686
 
 You can run the demo as `go run main.go`
 
+```go
+package main
+
+import (
+	"context"
+	"fmt"
+	"github.com/Trendyol/kafka-konsumer/v2"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/exporters/jaeger"
+	"go.opentelemetry.io/otel/propagation"
+	"go.opentelemetry.io/otel/sdk/resource"
+	"go.opentelemetry.io/otel/sdk/trace"
+	semconv "go.opentelemetry.io/otel/semconv/v1.19.0"
+	"os"
+	"os/signal"
+	"time"
+)
+
+func main() {
+	jaegerUrl := "http://localhost:14268/api/traces"
+	tp := initJaegerTracer(jaegerUrl)
+	defer tp.Shutdown(context.Background())
+
+	otel.SetTracerProvider(tp)
+	otel.SetTextMapPropagator(propagation.TraceContext{})
+
+	// ===============SIMULATE PRODUCER===============
+	producer, _ := kafka.NewProducer(&kafka.ProducerConfig{
+		Writer: kafka.WriterConfig{
+			Brokers: []string{"localhost:29092"},
+		},
+		DistributedTracingEnabled: true,
+	})
+
+	const topicName = "standart-topic"
+	producedMessage := kafka.Message{
+		Topic: topicName,
+		Key:   []byte("1"),
+		Value: []byte(`{ "foo": "bar" }`),
+	}
+
+	tr := otel.Tracer("after producing")
+	parentCtx, span := tr.Start(context.Background(), "before producing work")
+	time.Sleep(100 * time.Millisecond)
+	span.End()
+
+	_ = producer.Produce(parentCtx, producedMessage)
+
+	// ===============SIMULATE CONSUMER===============
+	consumerCfg := &kafka.ConsumerConfig{
+		Reader: kafka.ReaderConfig{
+			Brokers: []string{"localhost:29092"},
+			Topic:   topicName,
+			GroupID: "standart-cg",
+		},
+		ConsumeFn:                 consumeFn,
+		DistributedTracingEnabled: true,
+	}
+
+	consumer, _ := kafka.NewConsumer(consumerCfg)
+	defer consumer.Stop()
+
+	consumer.Consume()
+
+	fmt.Println("Consumer started...!")
+
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, os.Interrupt)
+	<-c
+}
+
+func consumeFn(message *kafka.Message) error {
+	fmt.Printf("Message From %s with value %s", message.Topic, string(message.Value))
+
+	tr := otel.Tracer("consumer")
+	parentCtx, span := tr.Start(message.Context, "work")
+	time.Sleep(100 * time.Millisecond)
+	span.End()
+
+	_, span = tr.Start(parentCtx, "another work")
+	time.Sleep(50 * time.Millisecond)
+	span.End()
+
+	return nil
+}
+
+func initJaegerTracer(url string) *trace.TracerProvider {
+	// Create the Jaeger exporter
+	exp, err := jaeger.New(jaeger.WithCollectorEndpoint(jaeger.WithEndpoint(url)))
+	if err != nil {
+		panic("Err initializing jaeger instance" + err.Error())
+	}
+
+	tp := trace.NewTracerProvider(
+		trace.WithBatcher(exp),
+		trace.WithResource(resource.NewWithAttributes(
+			semconv.SchemaURL,
+			semconv.ServiceName("kafka-konsumer-demo"),
+			attribute.String("environment", "prod"),
+		)),
+	)
+
+	return tp
+}
+```
+
 In the producing step, we open only two spans. In the consuming step, we open three spans. You can see their relationship via the jeager dashboard, as shown below.
 
 ![Demo Jeager](../../.github/images/jaeger-dashboard-example.png)

go.mod

@@ -10,8 +10,6 @@ require (
 	github.com/prometheus/client_golang v1.16.0
 	github.com/segmentio/kafka-go v0.4.46
 	go.opentelemetry.io/otel v1.19.0
-	go.opentelemetry.io/otel/exporters/jaeger v1.16.0
-	go.opentelemetry.io/otel/sdk v1.19.0
 	go.opentelemetry.io/otel/trace v1.19.0
 	go.uber.org/zap v1.24.0
 )

go.sum

@@ -66,7 +66,6 @@ github.com/segmentio/kafka-go v0.4.46 h1:Sx8/kvtY+/G8nM0roTNnFezSJj3bT2sW0Xy/YY3
 github.com/segmentio/kafka-go v0.4.46/go.mod h1:HjF6XbOKh0Pjlkr5GVZxt6CsjjwnmhVOfURM5KMd8qg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
-github.com/stretchr/objx v0.5.0 h1:1zr/of2m5FGMsad5YfcqgdqdWrIhu+EBEJRhR1U7z/c=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
@@ -85,12 +84,8 @@ github.com/xdg-go/stringprep v1.0.4/go.mod h1:mPGuuIYwz7CmR2bT9j4GbQqutWS1zV24gi
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 go.opentelemetry.io/otel v1.19.0 h1:MuS/TNf4/j4IXsZuJegVzI1cwut7Qc00344rgH7p8bs=
 go.opentelemetry.io/otel v1.19.0/go.mod h1:i0QyjOq3UPoTzff0PJB2N66fb4S0+rSbSB15/oyH9fY=
-go.opentelemetry.io/otel/exporters/jaeger v1.16.0 h1:YhxxmXZ011C0aDZKoNw+juVWAmEfv/0W2XBOv9aHTaA=
-go.opentelemetry.io/otel/exporters/jaeger v1.16.0/go.mod h1:grYbBo/5afWlPpdPZYhyn78Bk04hnvxn2+hvxQhKIQM=
 go.opentelemetry.io/otel/metric v1.19.0 h1:aTzpGtV0ar9wlV4Sna9sdJyII5jTVJEvKETPiOKwvpE=
 go.opentelemetry.io/otel/metric v1.19.0/go.mod h1:L5rUsV9kM1IxCj1MmSdS+JQAcVm319EUrDVLrt7jqt8=
-go.opentelemetry.io/otel/sdk v1.19.0 h1:6USY6zH+L8uMH8L3t1enZPR3WFEmSTADlqldyHtJi3o=
-go.opentelemetry.io/otel/sdk v1.19.0/go.mod h1:NedEbbS4w3C6zElbLdPJKOpJQOrGUJ+GfzpjUvI0v1A=
 go.opentelemetry.io/otel/trace v1.19.0 h1:DFVQmlVbfVeOuBRrwdtaehRrWiL1JoVs9CPIQ1Dzxpg=
 go.opentelemetry.io/otel/trace v1.19.0/go.mod h1:mfaSyvGyEJEI0nyV2I4qhNQnbBOUUmYZpYojqMnX2vo=
 go.uber.org/atomic v1.11.0 h1:ZvwS0R+56ePWxUNi+Atn9dWONBPp/AUETXlHW0DxSjE=