Krakend OTEL

backend_factory.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 
+	otellura "github.com/krakend/krakend-otel/lura"
 	amqp "github.com/krakendio/krakend-amqp/v2"
 	cel "github.com/krakendio/krakend-cel/v2"
 	cb "github.com/krakendio/krakend-circuitbreaker/v2/gobreaker/proxy"
@@ -39,18 +40,25 @@ func NewBackendFactory(logger logging.Logger, metricCollector *metrics.Metrics)
 	return NewBackendFactoryWithContext(context.Background(), logger, metricCollector)
 }
 
-// NewBackendFactoryWithContext creates a BackendFactory by stacking all the available middlewares and injecting the received context
-func NewBackendFactoryWithContext(ctx context.Context, logger logging.Logger, metricCollector *metrics.Metrics) proxy.BackendFactory {
+func newRequestExecutorFactory(logger logging.Logger) func(*config.Backend) client.HTTPRequestExecutor {
 	requestExecutorFactory := func(cfg *config.Backend) client.HTTPRequestExecutor {
 		clientFactory := client.NewHTTPClient
 		if _, ok := cfg.ExtraConfig[oauth2client.Namespace]; ok {
 			clientFactory = oauth2client.NewHTTPClient(cfg)
 		} else {
 			clientFactory = httpcache.NewHTTPClient(cfg, clientFactory)
 		}
+
+		clientFactory = otellura.InstrumentedHTTPClientFactory(clientFactory, cfg)
+		// TODO: check what happens if we have both, opencensus and otel enabled ?
 		return opencensus.HTTPRequestExecutorFromConfig(clientFactory, cfg)
 	}
-	requestExecutorFactory = httprequestexecutor.HTTPRequestExecutor(logger, requestExecutorFactory)
+	return httprequestexecutor.HTTPRequestExecutor(logger, requestExecutorFactory)
+}
+
+func internalNewBackendFactory(ctx context.Context, requestExecutorFactory func(*config.Backend) client.HTTPRequestExecutor,
+	logger logging.Logger, metricCollector *metrics.Metrics) proxy.BackendFactory {
+
 	backendFactory := martian.NewConfiguredBackendFactory(logger, requestExecutorFactory)
 	bf := pubsub.NewBackendFactory(ctx, logger, backendFactory)
 	backendFactory = bf.New
@@ -62,13 +70,19 @@ func NewBackendFactoryWithContext(ctx context.Context, logger logging.Logger, me
 	backendFactory = cb.BackendFactory(backendFactory, logger)
 	backendFactory = metricCollector.BackendFactory("backend", backendFactory)
 	backendFactory = opencensus.BackendFactory(backendFactory)
-
+	backendFactory = otellura.BackendFactory(backendFactory)
 	return func(remote *config.Backend) proxy.Proxy {
 		logger.Debug(fmt.Sprintf("[BACKEND: %s] Building the backend pipe", remote.URLPattern))
 		return backendFactory(remote)
 	}
 }
 
+// NewBackendFactoryWithContext creates a BackendFactory by stacking all the available middlewares and injecting the received context
+func NewBackendFactoryWithContext(ctx context.Context, logger logging.Logger, metricCollector *metrics.Metrics) proxy.BackendFactory {
+	requestExecutorFactory := newRequestExecutorFactory(logger)
+	return internalNewBackendFactory(ctx, requestExecutorFactory, logger, metricCollector)
+}
+
 type backendFactory struct{}
 
 func (backendFactory) NewBackendFactory(ctx context.Context, l logging.Logger, m *metrics.Metrics) proxy.BackendFactory {

executor.go

@@ -12,6 +12,9 @@ import (
 	"github.com/go-contrib/uuid"
 	"golang.org/x/sync/errgroup"
 
+	kotel "github.com/krakend/krakend-otel"
+	otellura "github.com/krakend/krakend-otel/lura"
+	otelgin "github.com/krakend/krakend-otel/router/gin"
 	krakendbf "github.com/krakendio/bloomfilter/v2/krakend"
 	asyncamqp "github.com/krakendio/krakend-amqp/v2/async"
 	audit "github.com/krakendio/krakend-audit"
@@ -137,11 +140,12 @@ type ExecutorBuilder struct {
 	TokenRejecterFactory        TokenRejecterFactory
 	MetricsAndTracesRegister    MetricsAndTracesRegister
 	EngineFactory               EngineFactory
-	ProxyFactory                ProxyFactory
-	BackendFactory              BackendFactory
-	HandlerFactory              HandlerFactory
-	RunServerFactory            RunServerFactory
-	AgentStarterFactory         AgentStarter
+
+	ProxyFactory        ProxyFactory
+	BackendFactory      BackendFactory
+	HandlerFactory      HandlerFactory
+	RunServerFactory    RunServerFactory
+	AgentStarterFactory AgentStarter
 
 	Middlewares []gin.HandlerFunc
 }
@@ -173,6 +177,9 @@ func (e *ExecutorBuilder) NewCmdExecutor(ctx context.Context) cmd.Executor {
 		}
 
 		metricCollector := e.MetricsAndTracesRegister.Register(ctx, cfg, logger)
+		if metricsAndTracesCloser, ok := e.MetricsAndTracesRegister.(io.Closer); ok {
+			defer metricsAndTracesCloser.Close()
+		}
 
 		// Initializes the global cache for the JWK clients if enabled in the config
 		if err := jose.SetGlobalCacher(logger, cfg.ExtraConfig); err != nil && err != jose.ErrNoValidatorCfg {
@@ -188,14 +195,18 @@ func (e *ExecutorBuilder) NewCmdExecutor(ctx context.Context) cmd.Executor {
 			logger.Warning("[SERVICE: Bloomfilter]", err.Error())
 		}
 
-		pf := e.ProxyFactory.NewProxyFactory(
-			logger,
-			e.BackendFactory.NewBackendFactory(ctx, logger, metricCollector),
-			metricCollector,
-		)
+		bpf := e.BackendFactory.NewBackendFactory(ctx, logger, metricCollector)
+		pf := e.ProxyFactory.NewProxyFactory(logger, bpf, metricCollector)
 
 		agentPing := make(chan string, len(cfg.AsyncAgents))
 
+		handlerF := e.HandlerFactory.NewHandlerFactory(logger, metricCollector, tokenRejecterFactory)
+		handlerF = otelgin.New(handlerF)
+
+		runServerChain := serverhttp.RunServerWithLoggerFactory(logger)
+		runServerChain = otellura.GlobalRunServer(logger, runServerChain)
+		runServerChain = router.RunServerFunc(e.RunServerFactory.NewRunServer(logger, runServerChain))
+
 		// setup the krakend router
 		routerFactory := router.NewFactory(router.Config{
 			Engine: e.EngineFactory.NewEngine(cfg, router.EngineOptions{
@@ -206,8 +217,8 @@ func (e *ExecutorBuilder) NewCmdExecutor(ctx context.Context) cmd.Executor {
 			ProxyFactory:   pf,
 			Middlewares:    e.Middlewares,
 			Logger:         logger,
-			HandlerFactory: e.HandlerFactory.NewHandlerFactory(logger, metricCollector, tokenRejecterFactory),
-			RunServer:      router.RunServerFunc(e.RunServerFactory.NewRunServer(logger, serverhttp.RunServerWithLoggerFactory(logger))),
+			HandlerFactory: handlerF,
+			RunServer:      runServerChain,
 		})
 
 		// start the engines
@@ -363,10 +374,12 @@ func (BloomFilterJWT) NewTokenRejecter(ctx context.Context, cfg config.ServiceCo
 }
 
 // MetricsAndTraces is the default implementation of the MetricsAndTracesRegister interface.
-type MetricsAndTraces struct{}
+type MetricsAndTraces struct {
+	shutdownFn func()
+}
 
 // Register registers the metrics, influx and opencensus packages as required by the given configuration.
-func (MetricsAndTraces) Register(ctx context.Context, cfg config.ServiceConfig, l logging.Logger) *metrics.Metrics {
+func (m *MetricsAndTraces) Register(ctx context.Context, cfg config.ServiceConfig, l logging.Logger) *metrics.Metrics {
 	metricCollector := metrics.New(ctx, cfg.ExtraConfig, l)
 
 	if err := influxdb.New(ctx, cfg.ExtraConfig, metricCollector, l); err != nil {
@@ -385,9 +398,21 @@ func (MetricsAndTraces) Register(ctx context.Context, cfg config.ServiceConfig,
 		l.Debug("[SERVICE: OpenCensus] Service correctly registered")
 	}
 
+	if shutdownFn, err := kotel.Register(ctx, l, cfg); err == nil {
+		m.shutdownFn = shutdownFn
+	} else {
+		l.Error(fmt.Sprintf("[SERVICE: OpenTelemetry] cannot register exporters: %s", err.Error()))
+	}
+
 	return metricCollector
 }
 
+func (m *MetricsAndTraces) Close() {
+	if m.shutdownFn != nil {
+		m.shutdownFn()
+	}
+}
+
 const (
 	usageDisable = "USAGE_DISABLE"
 	usageDelay   = 5 * time.Second

go.mod

@@ -5,6 +5,7 @@ go 1.20
 require (
 	github.com/gin-gonic/gin v1.9.1
 	github.com/go-contrib/uuid v1.2.0
+	github.com/krakend/krakend-otel v0.2.0
 	github.com/krakendio/bloomfilter/v2 v2.0.4
 	github.com/krakendio/krakend-amqp/v2 v2.1.0
 	github.com/krakendio/krakend-audit v0.0.5
@@ -94,6 +95,7 @@ require (
 	github.com/bytedance/sonic v1.10.2 // indirect
 	github.com/catalinc/hashcash v0.0.0-20161205220751-e6bc29ff4de9 // indirect
 	github.com/cenkalti/backoff/v3 v3.2.2 // indirect
+	github.com/cenkalti/backoff/v4 v4.2.1 // indirect
 	github.com/census-instrumentation/opencensus-proto v0.4.1 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
@@ -195,7 +197,6 @@ require (
 	github.com/prometheus/statsd_exporter v0.26.0 // indirect
 	github.com/rabbitmq/amqp091-go v1.9.0 // indirect
 	github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475 // indirect
-	github.com/rogpeppe/go-internal v1.11.0 // indirect
 	github.com/rs/cors v1.9.0 // indirect
 	github.com/rs/cors/wrapper/gin v0.0.0-20221003140808-fcebdb403f4d // indirect
 	github.com/ryanuber/go-glob v1.0.0 // indirect
@@ -229,10 +230,18 @@ require (
 	go.opencensus.io v0.24.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.48.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.48.0 // indirect
-	go.opentelemetry.io/otel v1.23.1 // indirect
-	go.opentelemetry.io/otel/metric v1.23.1 // indirect
-	go.opentelemetry.io/otel/sdk v1.23.1 // indirect
-	go.opentelemetry.io/otel/trace v1.23.1 // indirect
+	go.opentelemetry.io/otel v1.24.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.24.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.24.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.24.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.24.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.24.0 // indirect
+	go.opentelemetry.io/otel/exporters/prometheus v0.46.0 // indirect
+	go.opentelemetry.io/otel/metric v1.24.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.24.0 // indirect
+	go.opentelemetry.io/otel/sdk/metric v1.24.0 // indirect
+	go.opentelemetry.io/otel/trace v1.24.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.1.0 // indirect
 	gocloud.dev v0.36.0 // indirect
 	gocloud.dev/pubsub/kafkapubsub v0.36.0 // indirect
 	gocloud.dev/pubsub/natspubsub v0.36.0 // indirect
@@ -253,7 +262,7 @@ require (
 	google.golang.org/genproto v0.0.0-20240205150955-31a09d347014 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20240213162025-012b6fc9bca9 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240205150955-31a09d347014 // indirect
-	google.golang.org/grpc v1.61.0 // indirect
+	google.golang.org/grpc v1.61.1 // indirect
 	google.golang.org/protobuf v1.32.0 // indirect
 	gopkg.in/DataDog/dd-trace-go.v1 v1.22.0 // indirect
 	gopkg.in/Graylog2/go-gelf.v2 v2.0.0-20191017102106-1550ee647df0 // indirect

go.sum

@@ -171,6 +171,8 @@ github.com/catalinc/hashcash v0.0.0-20161205220751-e6bc29ff4de9 h1:mzt00lI/krYDF
 github.com/catalinc/hashcash v0.0.0-20161205220751-e6bc29ff4de9/go.mod h1:Qj15jt0Y3YvBTjOfWQ7WdgNtSE9WnbzIDpLcTcpQ1qw=
 github.com/cenkalti/backoff/v3 v3.2.2 h1:cfUAAO3yvKMYKPrvhDuHSwQnhZNk/RMHKdZqKTxfm6M=
 github.com/cenkalti/backoff/v3 v3.2.2/go.mod h1:cIeZDE3IrqwwJl6VUwCN6trj1oXrTS4rc0ij+ULvLYs=
+github.com/cenkalti/backoff/v4 v4.2.1 h1:y4OZtCnogmCPw98Zjyt5a6+QwPLGkiQsYW5oUqylYbM=
+github.com/cenkalti/backoff/v4 v4.2.1/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/census-instrumentation/opencensus-proto v0.4.1 h1:iKLQ0xPNFxR/2hzXZMrBo8f1j86j5WHzznCCQxV/b8g=
 github.com/census-instrumentation/opencensus-proto v0.4.1/go.mod h1:4T9NM4+4Vw91VeyqjLS6ao50K5bOcLKN6Q42XnYaRYw=
@@ -457,6 +459,8 @@ github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/krakend/go-auth0 v1.0.0 h1:dewhsVnquDStTXaRY5OOCL+i4oe+qKbDpaNz9D6Kzuk=
 github.com/krakend/go-auth0 v1.0.0/go.mod h1:lJtS6u8y1mai4lFcE3JC2oSDQaNo2aXexTS0cqTblZU=
+github.com/krakend/krakend-otel v0.2.0 h1:0HPRHiMQc+A1jY0+QUjYSUBEJ/7yBsx3FJ8+R8mT8uU=
+github.com/krakend/krakend-otel v0.2.0/go.mod h1:BHe8HiYJ7d45Rk/wGN0XtBtJBsyeNxUIZF+YMlgorbA=
 github.com/krakendio/binder v0.0.0-20230413105421-1bbe94e65f45 h1:5UbGH+Sa62LMtbBn6m3EEcaA4JFxaDd91X/X0SsZuO8=
 github.com/krakendio/binder v0.0.0-20230413105421-1bbe94e65f45/go.mod h1:VgJK/LM9NwyIxzYETGXQeRxdDg0IgBw4Fol58JVx2+4=
 github.com/krakendio/bloomfilter/v2 v2.0.4 h1:+FCe52Izx4mZgFevvifOMF+3WbbhmZT0xZnrnUE4C0U=
@@ -645,7 +649,6 @@ github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475/go.mod h1:bCqn
 github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/rogpeppe/go-internal v1.11.0 h1:cWPaGQEPrBb5/AsnsZesgZZ9yb1OQ+GOISoDNXVBh4M=
-github.com/rogpeppe/go-internal v1.11.0/go.mod h1:ddIwULY96R17DhadqLgMfk9H9tvdUzkipdSkR5nkCZA=
 github.com/rs/cors v1.9.0 h1:l9HGsTsHJcvW14Nk7J9KFz8bzeAWXn3CG6bgt7LsrAE=
 github.com/rs/cors v1.9.0/go.mod h1:XyqrcTp5zjWr1wsJ8PIRZssZ8b/WMcMf71DJnit4EMU=
 github.com/rs/cors/wrapper/gin v0.0.0-20221003140808-fcebdb403f4d h1:xKonGHdG2Wh3vUkHP0dQC6ZruT9epZCyKrXTxo+xWpk=
@@ -755,14 +758,30 @@ go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.4
 go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.48.0/go.mod h1:tIKj3DbO8N9Y2xo52og3irLsPI4GW02DSMtrVgNMgxg=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.48.0 h1:doUP+ExOpH3spVTLS0FcWGLnQrPct/hD/bCPbDRUEAU=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.48.0/go.mod h1:rdENBZMT2OE6Ne/KLwpiXudnAsbdrdBaqBvTN8M8BgA=
-go.opentelemetry.io/otel v1.23.1 h1:Za4UzOqJYS+MUczKI320AtqZHZb7EqxO00jAHE0jmQY=
-go.opentelemetry.io/otel v1.23.1/go.mod h1:Td0134eafDLcTS4y+zQ26GE8u3dEuRBiBCTUIRHaikA=
-go.opentelemetry.io/otel/metric v1.23.1 h1:PQJmqJ9u2QaJLBOELl1cxIdPcpbwzbkjfEyelTl2rlo=
-go.opentelemetry.io/otel/metric v1.23.1/go.mod h1:mpG2QPlAfnK8yNhNJAxDZruU9Y1/HubbC+KyH8FaCWI=
-go.opentelemetry.io/otel/sdk v1.23.1 h1:O7JmZw0h76if63LQdsBMKQDWNb5oEcOThG9IrxscV+E=
-go.opentelemetry.io/otel/sdk v1.23.1/go.mod h1:LzdEVR5am1uKOOwfBWFef2DCi1nu3SA8XQxx2IerWFk=
-go.opentelemetry.io/otel/trace v1.23.1 h1:4LrmmEd8AU2rFvU1zegmvqW7+kWarxtNOPyeL6HmYY8=
-go.opentelemetry.io/otel/trace v1.23.1/go.mod h1:4IpnpJFwr1mo/6HL8XIPJaE9y0+u1KcVmuW7dwFSVrI=
+go.opentelemetry.io/otel v1.24.0 h1:0LAOdjNmQeSTzGBzduGe/rU4tZhMwL5rWgtp9Ku5Jfo=
+go.opentelemetry.io/otel v1.24.0/go.mod h1:W7b9Ozg4nkF5tWI5zsXkaKKDjdVjpD4oAt9Qi/MArHo=
+go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.24.0 h1:f2jriWfOdldanBwS9jNBdeOKAQN7b4ugAMaNu1/1k9g=
+go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.24.0/go.mod h1:B+bcQI1yTY+N0vqMpoZbEN7+XU4tNM0DmUiOwebFJWI=
+go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.24.0 h1:mM8nKi6/iFQ0iqst80wDHU2ge198Ye/TfN0WBS5U24Y=
+go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp v1.24.0/go.mod h1:0PrIIzDteLSmNyxqcGYRL4mDIo8OTuBAOI/Bn1URxac=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.24.0 h1:t6wl9SPayj+c7lEIFgm4ooDBZVb01IhLB4InpomhRw8=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.24.0/go.mod h1:iSDOcsnSA5INXzZtwaBPrKp/lWu/V14Dd+llD0oI2EA=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.24.0 h1:Mw5xcxMwlqoJd97vwPxA8isEaIoxsta9/Q51+TTJLGE=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.24.0/go.mod h1:CQNu9bj7o7mC6U7+CA/schKEYakYXWr79ucDHTMGhCM=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.24.0 h1:Xw8U6u2f8DK2XAkGRFV7BBLENgnTGX9i4rQRxJf+/vs=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.24.0/go.mod h1:6KW1Fm6R/s6Z3PGXwSJN2K4eT6wQB3vXX6CVnYX9NmM=
+go.opentelemetry.io/otel/exporters/prometheus v0.46.0 h1:I8WIFXR351FoLJYuloU4EgXbtNX2URfU/85pUPheIEQ=
+go.opentelemetry.io/otel/exporters/prometheus v0.46.0/go.mod h1:ztwVUHe5DTR/1v7PeuGRnU5Bbd4QKYwApWmuutKsJSs=
+go.opentelemetry.io/otel/metric v1.24.0 h1:6EhoGWWK28x1fbpA4tYTOWBkPefTDQnb8WSGXlc88kI=
+go.opentelemetry.io/otel/metric v1.24.0/go.mod h1:VYhLe1rFfxuTXLgj4CBiyz+9WYBA8pNGJgDcSFRKBco=
+go.opentelemetry.io/otel/sdk v1.24.0 h1:YMPPDNymmQN3ZgczicBY3B6sf9n62Dlj9pWD3ucgoDw=
+go.opentelemetry.io/otel/sdk v1.24.0/go.mod h1:KVrIYw6tEubO9E96HQpcmpTKDVn9gdv35HoYiQWGDFg=
+go.opentelemetry.io/otel/sdk/metric v1.24.0 h1:yyMQrPzF+k88/DbH7o4FMAs80puqd+9osbiBrJrz/w8=
+go.opentelemetry.io/otel/sdk/metric v1.24.0/go.mod h1:I6Y5FjH6rvEnTTAYQz3Mmv2kl6Ek5IIrmwTLqMrrOE0=
+go.opentelemetry.io/otel/trace v1.24.0 h1:CsKnnL4dUAr/0llH9FKuc698G04IrpWV0MQA/Y1YELI=
+go.opentelemetry.io/otel/trace v1.24.0/go.mod h1:HPc3Xr/cOApsBI154IU0OI0HJexz+aw5uPdbs3UCjNU=
+go.opentelemetry.io/proto/otlp v1.1.0 h1:2Di21piLrCqJ3U3eXGCTPHE9R8Nh+0uglSnOyxikMeI=
+go.opentelemetry.io/proto/otlp v1.1.0/go.mod h1:GpBHCBWiqvVLDqmHZsoMM3C5ySeKTC7ej/RNTae6MdY=
 go.uber.org/goleak v1.2.1/go.mod h1:qlT2yGI9QafXHhZZLxlSuNsMw3FFLxBr+tBRlmO1xH4=
 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
 gocloud.dev v0.36.0 h1:q5zoXux4xkOZP473e1EZbG8Gq9f0vlg1VNH5Du/ybus=
@@ -1116,8 +1135,8 @@ google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3Iji
 google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
-google.golang.org/grpc v1.61.0 h1:TOvOcuXn30kRao+gfcvsebNEa5iZIiLkisYEkf7R7o0=
-google.golang.org/grpc v1.61.0/go.mod h1:VUbo7IFqmF1QtCAstipjG0GIoq49KvMe9+h1jFLBNJs=
+google.golang.org/grpc v1.61.1 h1:kLAiWrZs7YeDM6MumDe7m3y4aM6wacLzM1Y/wiLP9XY=
+google.golang.org/grpc v1.61.1/go.mod h1:VUbo7IFqmF1QtCAstipjG0GIoq49KvMe9+h1jFLBNJs=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=

proxy_factory.go

@@ -3,6 +3,7 @@ package krakend
 import (
 	"fmt"
 
+	otellura "github.com/krakend/krakend-otel/lura"
 	cel "github.com/krakendio/krakend-cel/v2"
 	jsonschema "github.com/krakendio/krakend-jsonschema/v2"
 	lua "github.com/krakendio/krakend-lua/v2/proxy"
@@ -13,15 +14,23 @@ import (
 	"github.com/luraproject/lura/v2/proxy"
 )
 
-// NewProxyFactory returns a new ProxyFactory wrapping the injected BackendFactory with the default proxy stack and a metrics collector
-func NewProxyFactory(logger logging.Logger, backendFactory proxy.BackendFactory, metricCollector *metrics.Metrics) proxy.Factory {
+func internalNewProxyFactory(logger logging.Logger, backendFactory proxy.BackendFactory,
+	metricCollector *metrics.Metrics) proxy.Factory {
+
 	proxyFactory := proxy.NewDefaultFactory(backendFactory, logger)
 	proxyFactory = proxy.NewShadowFactory(proxyFactory)
 	proxyFactory = jsonschema.ProxyFactory(logger, proxyFactory)
 	proxyFactory = cel.ProxyFactory(logger, proxyFactory)
 	proxyFactory = lua.ProxyFactory(logger, proxyFactory)
 	proxyFactory = metricCollector.ProxyFactory("pipe", proxyFactory)
 	proxyFactory = opencensus.ProxyFactory(proxyFactory)
+	proxyFactory = otellura.ProxyFactory(proxyFactory)
+	return proxyFactory
+}
+
+// NewProxyFactory returns a new ProxyFactory wrapping the injected BackendFactory with the default proxy stack and a metrics collector
+func NewProxyFactory(logger logging.Logger, backendFactory proxy.BackendFactory, metricCollector *metrics.Metrics) proxy.Factory {
+	proxyFactory := internalNewProxyFactory(logger, backendFactory, metricCollector)
 
 	return proxy.FactoryFunc(func(cfg *config.EndpointConfig) (proxy.Proxy, error) {
 		logger.Debug(fmt.Sprintf("[ENDPOINT: %s] Building the proxy pipe", cfg.Endpoint))