added jaeger exporter

Signed-off-by: Aditi Ahuja <aditi.ahuja@couchbase.com>

pkg/tracing/client/factory.go

@@ -100,8 +100,12 @@ func NewTracer(ctx context.Context, logger log.Logger, metrics *prometheus.Regis
 		tracer, closerFunc := migration.Bridge(tracerProvider, logger)
 		return tracer, closerFunc, nil
 	case string(Jaeger):
-		// next step - create newTracerProvider like google_cloud
-		return jaeger.NewTracer(ctx, logger, metrics, config)
+		tracerProvider, err := jaeger.NewTracerProvider(ctx, logger, config)
+		if err != nil {
+			return nil, nil, errors.Wrap(err, "new tracer provider err")
+		}
+		tracer, closerFunc := migration.Bridge(tracerProvider, logger)
+		return tracer, closerFunc, nil
 	case string(ElasticAPM):
 		return elasticapm.NewTracer(config)
 	case string(Lightstep):

pkg/tracing/jaeger/jaeger.go

@@ -19,6 +19,10 @@ import (
 	"github.com/uber/jaeger-client-go/config"
 	jaeger_prometheus "github.com/uber/jaeger-lib/metrics/prometheus"
 	otel_jaeger "go.opentelemetry.io/otel/exporters/jaeger"
+	"go.opentelemetry.io/otel/sdk/resource"
+	tracesdk "go.opentelemetry.io/otel/sdk/trace"
+	semconv "go.opentelemetry.io/otel/semconv/v1.4.0"
+	"gopkg.in/yaml.v2"
 )
 
 // Tracer extends opentracing.Tracer.
@@ -34,6 +38,29 @@ func (t *Tracer) GetTraceIDFromSpanContext(ctx opentracing.SpanContext) (string,
 	return "", false
 }
 
+func NewTracerProvider(ctx context.Context, logger log.Logger, conf []byte) (*tracesdk.TracerProvider, error) {
+	config := Config{}
+	if err := yaml.Unmarshal(conf, &config); err != nil {
+		return nil, err
+	}
+
+	exporter, err := otel_jaeger.New(otel_jaeger.WithCollectorEndpoint())
+	if err != nil {
+		return nil, err
+	}
+
+	processor := tracesdk.NewBatchSpanProcessor(exporter)
+	tp := tracesdk.NewTracerProvider(
+		tracesdk.WithSpanProcessor(processor),
+		tracesdk.WithBatcher(exporter),
+		tracesdk.WithResource(resource.NewWithAttributes(
+			semconv.SchemaURL,
+			semconv.ServiceNameKey.String(config.ServiceName),
+		)),
+	)
+	return tp, nil
+}
+
 // NewTracer create tracer from YAML.
 func NewTracer(ctx context.Context, logger log.Logger, metrics *prometheus.Registry, conf []byte) (opentracing.Tracer, io.Closer, error) {
 	var (