Remove old OTLP exporter

.github/dependabot.yml

@@ -136,16 +136,6 @@ updates:
     schedule:
       day: sunday
       interval: weekly
-  -
-    package-ecosystem: gomod
-    directory: /exporters/otlp
-    labels:
-      - dependencies
-      - go
-      - "Skip Changelog"
-    schedule:
-      day: sunday
-      interval: weekly
   -
     package-ecosystem: gomod
     directory: /exporters/stdout

CHANGELOG.md

@@ -106,6 +106,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
   Handling of baggage is now done using the added `Baggage` type and related context functions (`ContextWithBaggage`, `ContextWithoutBaggage`, and `FromContext`) in that package. (TBD)
 - The `InstallNewPipeline` and `NewExportPipeline` creation functions in all the exporters (prometheus, otlp, stdout, jaeger, and zipkin) have been removed.
   These functions were deemed premature attempts to provide convenience that did not achieve this aim. (#1985)
+- The `go.opentelemetry.io/otel/exporters/otlp` exporter has been removed.  Use `go.opentelemetry.io/otel/exporters/otlp/otlptrace` instead. (#1990)
 
 ### Fixed
 

Makefile

@@ -150,7 +150,7 @@ lint-modules: | $(CROSSLINK)
 
 .PHONY: license-check
 license-check:
-	@licRes=$$(for f in $$(find . -type f \( -iname '*.go' -o -iname '*.sh' \) ! -path '**/third_party/*' ! -path './exporters/otlp/internal/opentelemetry-proto/*') ; do \
+	@licRes=$$(for f in $$(find . -type f \( -iname '*.go' -o -iname '*.sh' \) ! -path '**/third_party/*') ; do \
 	           awk '/Copyright The OpenTelemetry Authors|generated|GENERATED/ && NR<=3 { found=1; next } END { if (!found) print FILENAME }' $$f; \
 	   done); \
 	   if [ -n "$${licRes}" ]; then \

bridge/opencensus/go.mod

@@ -34,8 +34,6 @@ replace go.opentelemetry.io/otel/example/zipkin => ../../example/zipkin
 
 replace go.opentelemetry.io/otel/exporters/metric/prometheus => ../../exporters/metric/prometheus
 
-replace go.opentelemetry.io/otel/exporters/otlp => ../../exporters/otlp
-
 replace go.opentelemetry.io/otel/exporters/stdout => ../../exporters/stdout
 
 replace go.opentelemetry.io/otel/exporters/trace/jaeger => ../../exporters/trace/jaeger

bridge/opentracing/go.mod

@@ -30,8 +30,6 @@ replace go.opentelemetry.io/otel/example/zipkin => ../../example/zipkin
 
 replace go.opentelemetry.io/otel/exporters/metric/prometheus => ../../exporters/metric/prometheus
 
-replace go.opentelemetry.io/otel/exporters/otlp => ../../exporters/otlp
-
 replace go.opentelemetry.io/otel/exporters/stdout => ../../exporters/stdout
 
 replace go.opentelemetry.io/otel/exporters/trace/jaeger => ../../exporters/trace/jaeger

example/jaeger/go.mod

@@ -34,8 +34,6 @@ replace go.opentelemetry.io/otel/example/zipkin => ../zipkin
 
 replace go.opentelemetry.io/otel/exporters/metric/prometheus => ../../exporters/metric/prometheus
 
-replace go.opentelemetry.io/otel/exporters/otlp => ../../exporters/otlp
-
 replace go.opentelemetry.io/otel/exporters/stdout => ../../exporters/stdout
 
 replace go.opentelemetry.io/otel/exporters/trace/zipkin => ../../exporters/trace/zipkin

example/namedtracer/go.mod

@@ -35,8 +35,6 @@ replace go.opentelemetry.io/otel/example/zipkin => ../zipkin
 
 replace go.opentelemetry.io/otel/exporters/metric/prometheus => ../../exporters/metric/prometheus
 
-replace go.opentelemetry.io/otel/exporters/otlp => ../../exporters/otlp
-
 replace go.opentelemetry.io/otel/exporters/trace/jaeger => ../../exporters/trace/jaeger
 
 replace go.opentelemetry.io/otel/exporters/trace/zipkin => ../../exporters/trace/zipkin

example/opencensus/go.mod

@@ -36,8 +36,6 @@ replace go.opentelemetry.io/otel/example/zipkin => ../zipkin
 
 replace go.opentelemetry.io/otel/exporters/metric/prometheus => ../../exporters/metric/prometheus
 
-replace go.opentelemetry.io/otel/exporters/otlp => ../../exporters/otlp
-
 replace go.opentelemetry.io/otel/exporters/trace/jaeger => ../../exporters/trace/jaeger
 
 replace go.opentelemetry.io/otel/exporters/trace/zipkin => ../../exporters/trace/zipkin

example/otel-collector/go.mod

@@ -4,16 +4,13 @@ go 1.15
 
 replace (
 	go.opentelemetry.io/otel => ../..
-	go.opentelemetry.io/otel/exporters/otlp => ../../exporters/otlp
 	go.opentelemetry.io/otel/sdk => ../../sdk
 )
 
 require (
 	go.opentelemetry.io/otel v0.20.0
-	go.opentelemetry.io/otel/exporters/otlp v0.20.0
-	go.opentelemetry.io/otel/metric v0.20.0
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v0.20.0
 	go.opentelemetry.io/otel/sdk v0.20.0
-	go.opentelemetry.io/otel/sdk/metric v0.20.0
 	go.opentelemetry.io/otel/trace v0.20.0
 	google.golang.org/grpc v1.38.0
 )

example/otel-collector/go.sum

@@ -2,8 +2,6 @@ cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMT
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
-github.com/benbjohnson/clock v1.1.0 h1:Q92kusRqC1XV2MjkWETPvjJVqKetz1OzxZB7mHJLju8=
-github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
 github.com/cenkalti/backoff/v4 v4.1.1 h1:G2HAfAmvm/GcKan2oOQpBXOd2tT2G57ZnZGWa1PxPBQ=
 github.com/cenkalti/backoff/v4 v4.1.1/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=

example/otel-collector/main.go

@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// Example using the OTLP exporter + collector + third-party backends. For
+// Example using OTLP exporters + collector + third-party backends. For
 // information about using the exporter, see:
 // https://pkg.go.dev/go.opentelemetry.io/otel/exporters/otlp?tab=doc#example-package-Insecure
 package main
@@ -27,14 +27,8 @@ import (
 
 	"go.opentelemetry.io/otel"
 	"go.opentelemetry.io/otel/attribute"
-	"go.opentelemetry.io/otel/exporters/otlp"
-	"go.opentelemetry.io/otel/exporters/otlp/otlpgrpc"
-	"go.opentelemetry.io/otel/metric"
-	"go.opentelemetry.io/otel/metric/global"
+	"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
 	"go.opentelemetry.io/otel/propagation"
-	controller "go.opentelemetry.io/otel/sdk/metric/controller/basic"
-	processor "go.opentelemetry.io/otel/sdk/metric/processor/basic"
-	"go.opentelemetry.io/otel/sdk/metric/selector/simple"
 	"go.opentelemetry.io/otel/sdk/resource"
 	sdktrace "go.opentelemetry.io/otel/sdk/trace"
 	semconv "go.opentelemetry.io/otel/semconv/v1.4.0"
@@ -46,19 +40,6 @@ import (
 func initProvider() func() {
 	ctx := context.Background()
 
-	// If the OpenTelemetry Collector is running on a local cluster (minikube or
-	// microk8s), it should be accessible through the NodePort service at the
-	// `localhost:30080` endpoint. Otherwise, replace `localhost` with the
-	// endpoint of your cluster. If you run the app inside k8s, then you can
-	// probably connect directly to the service through dns
-	driver := otlpgrpc.NewDriver(
-		otlpgrpc.WithInsecure(),
-		otlpgrpc.WithEndpoint("localhost:30080"),
-		otlpgrpc.WithDialOption(grpc.WithBlock()), // useful for testing
-	)
-	exp, err := otlp.New(ctx, driver)
-	handleErr(err, "failed to create exporter")
-
 	res, err := resource.New(ctx,
 		resource.WithAttributes(
 			// the service name used to display traces in backends
@@ -67,32 +48,34 @@ func initProvider() func() {
 	)
 	handleErr(err, "failed to create resource")
 
-	bsp := sdktrace.NewBatchSpanProcessor(exp)
+	// If the OpenTelemetry Collector is running on a local cluster (minikube or
+	// microk8s), it should be accessible through the NodePort service at the
+	// `localhost:30080` endpoint. Otherwise, replace `localhost` with the
+	// endpoint of your cluster. If you run the app inside k8s, then you can
+	// probably connect directly to the service through dns
+
+	// Set up a trace exporter
+	traceExporter, err := otlptracegrpc.New(ctx,
+		otlptracegrpc.WithInsecure(),
+		otlptracegrpc.WithEndpoint("localhost:30080"),
+		otlptracegrpc.WithDialOption(grpc.WithBlock()),
+	)
+	handleErr(err, "failed to create trace exporter")
+
+	// Register the trace exporter with a TracerProvider, using a batch
+	// span processor to aggregate spans before export.
+	bsp := sdktrace.NewBatchSpanProcessor(traceExporter)
 	tracerProvider := sdktrace.NewTracerProvider(
 		sdktrace.WithSampler(sdktrace.AlwaysSample()),
 		sdktrace.WithResource(res),
 		sdktrace.WithSpanProcessor(bsp),
 	)
-
-	cont := controller.New(
-		processor.New(
-			simple.NewWithExactDistribution(),
-			exp,
-		),
-		controller.WithExporter(exp),
-		controller.WithCollectPeriod(2*time.Second),
-	)
+	otel.SetTracerProvider(tracerProvider)
 
 	// set global propagator to tracecontext (the default is no-op).
 	otel.SetTextMapPropagator(propagation.TraceContext{})
-	otel.SetTracerProvider(tracerProvider)
-	global.SetMeterProvider(cont.MeterProvider())
-	handleErr(cont.Start(context.Background()), "failed to start controller")
 
 	return func() {
-		// Push any last metric events to the exporter.
-		handleErr(cont.Stop(context.Background()), "failed to stop controller")
-
 		// Shutdown will flush any remaining spans and shut down the exporter.
 		handleErr(tracerProvider.Shutdown(ctx), "failed to shutdown TracerProvider")
 	}
@@ -105,7 +88,6 @@ func main() {
 	defer shutdown()
 
 	tracer := otel.Tracer("test-tracer")
-	meter := global.Meter("test-meter")
 
 	// labels represent additional key-value descriptors that can be bound to a
 	// metric observer or recorder.
@@ -115,14 +97,6 @@ func main() {
 		attribute.String("labelC", "vanilla"),
 	}
 
-	// Recorder metric example
-	valuerecorder := metric.Must(meter).
-		NewFloat64Counter(
-			"an_important_metric",
-			metric.WithDescription("Measures the cumulative epicness of the app"),
-		).Bind(commonLabels...)
-	defer valuerecorder.Unbind()
-
 	// work begins
 	ctx, span := tracer.Start(
 		context.Background(),
@@ -132,7 +106,6 @@ func main() {
 	for i := 0; i < 10; i++ {
 		_, iSpan := tracer.Start(ctx, fmt.Sprintf("Sample-%d", i))
 		log.Printf("Doing really hard work (%d / 10)\n", i+1)
-		valuerecorder.Add(ctx, 1.0)
 
 		<-time.After(time.Second)
 		iSpan.End()

example/passthrough/go.mod

@@ -38,8 +38,6 @@ replace go.opentelemetry.io/otel/example/zipkin => ../zipkin
 
 replace go.opentelemetry.io/otel/exporters/metric/prometheus => ../../exporters/metric/prometheus
 
-replace go.opentelemetry.io/otel/exporters/otlp => ../../exporters/otlp
-
 replace go.opentelemetry.io/otel/exporters/trace/jaeger => ../../exporters/trace/jaeger
 
 replace go.opentelemetry.io/otel/exporters/trace/zipkin => ../../exporters/trace/zipkin