Decouple otlpmetricgrpc and otlpmetrichttp from otlpmetric

CHANGELOG.md

@@ -15,6 +15,8 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - Add the `go.opentelemetry.io/otel/trace/embedded` package to be embedded in the exported trace API interfaces. (#4620)
 - Add the `go.opentelemetry.io/otel/trace/noop` package as a default no-op implementation of the trace API. (#4620)
 - Add context propagation in `go.opentelemetry.io/otel/example/dice`. (#4644)
+- Add `Version` function in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc`. (#4660)
+- Add `Version` function in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp`. (#4660)
 
 ### Deprecated
 
@@ -38,6 +40,8 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
   This extends the `Span` interface and is is a breaking change for any existing implementation.
   Implementors need to update their implementations based on what they want the default behavior of the interface to be.
   See the "API Implementations" section of the `go.opentelemetry.io/otel/trace` package documentation for more informatoin about how to accomplish this. (#4620)
+- `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc` does no longer depend on `go.opentelemetry.io/otel/exporters/otlp/otlpmetric`. (#4660)
+- `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp` does no longer depend on `go.opentelemetry.io/otel/exporters/otlp/otlpmetric`. (#4660)
 
 ## [1.19.0/0.42.0/0.0.7] 2023-09-28
 

exporters/otlp/otlpmetric/otlpmetricgrpc/client.go

@@ -61,7 +61,11 @@ func newClient(ctx context.Context, cfg oconf.Config) (*client, error) {
 	if c.conn == nil {
 		// If the caller did not provide a ClientConn when the client was
 		// created, create one using the configuration they did provide.
-		conn, err := grpc.DialContext(ctx, cfg.Metrics.Endpoint, cfg.DialOptions...)
+		userAgent := "OTel Go OTLP over gRPC metrics exporter/" + Version()
+		dialOpts := []grpc.DialOption{grpc.WithUserAgent(userAgent)}
+		dialOpts = append(dialOpts, cfg.DialOptions...)
+
+		conn, err := grpc.DialContext(ctx, cfg.Metrics.Endpoint, dialOpts...)
 		if err != nil {
 			return nil, err
 		}

exporters/otlp/otlpmetric/otlpmetricgrpc/client_test.go

@@ -188,7 +188,7 @@ func TestConfig(t *testing.T) {
 		require.NoError(t, exp.Shutdown(ctx))
 
 		got := coll.Headers()
-		require.Regexp(t, "OTel OTLP Exporter Go/[01]\\..*", got)
+		require.Regexp(t, "OTel Go OTLP over gRPC metrics exporter/[01]\\..*", got)
 		require.Contains(t, got, key)
 		assert.Equal(t, got[key], []string{headers[key]})
 	})

exporters/otlp/otlpmetric/otlpmetricgrpc/go.mod

@@ -9,7 +9,6 @@ require (
 	github.com/google/go-cmp v0.6.0
 	github.com/stretchr/testify v1.8.4
 	go.opentelemetry.io/otel v1.19.0
-	go.opentelemetry.io/otel/exporters/otlp/otlpmetric v0.42.0
 	go.opentelemetry.io/otel/sdk v1.19.0
 	go.opentelemetry.io/otel/sdk/metric v1.19.0
 	go.opentelemetry.io/proto/otlp v1.0.0
@@ -26,6 +25,7 @@ require (
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.16.0 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rogpeppe/go-internal v1.11.0 // indirect
 	go.opentelemetry.io/otel/metric v1.19.0 // indirect
 	go.opentelemetry.io/otel/trace v1.19.0 // indirect
 	golang.org/x/net v0.17.0 // indirect
@@ -41,8 +41,6 @@ replace go.opentelemetry.io/otel/sdk => ../../../../sdk
 
 replace go.opentelemetry.io/otel/sdk/metric => ../../../../sdk/metric
 
-replace go.opentelemetry.io/otel/exporters/otlp/otlpmetric => ../
-
 replace go.opentelemetry.io/otel/metric => ../../../../metric
 
 replace go.opentelemetry.io/otel/trace => ../../../../trace

exporters/otlp/otlpmetric/otlpmetricgrpc/go.sum

@@ -22,7 +22,8 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
+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/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 go.opentelemetry.io/proto/otlp v1.0.0 h1:T0TX0tmXU8a3CbNXzEKGeU5mIVOdf0oykP+u2lIVU/I=

exporters/otlp/otlpmetric/otlpmetricgrpc/internal/oconf/options.go

@@ -30,7 +30,6 @@ import (
 	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/encoding/gzip"
 
-	"go.opentelemetry.io/otel/exporters/otlp/otlpmetric"
 	"go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc/internal/retry"
 	"go.opentelemetry.io/otel/sdk/metric"
 )
@@ -122,7 +121,6 @@ func cleanPath(urlPath string, defaultPath string) string {
 // NewGRPCConfig returns a new Config with all settings applied from opts and
 // any unset setting using the default gRPC config values.
 func NewGRPCConfig(opts ...GRPCOption) Config {
-	userAgent := "OTel OTLP Exporter Go/" + otlpmetric.Version()
 	cfg := Config{
 		Metrics: SignalConfig{
 			Endpoint:    fmt.Sprintf("%s:%d", DefaultCollectorHost, DefaultCollectorGRPCPort),
@@ -134,7 +132,6 @@ func NewGRPCConfig(opts ...GRPCOption) Config {
 			AggregationSelector: metric.DefaultAggregationSelector,
 		},
 		RetryConfig: retry.DefaultConfig,
-		DialOptions: []grpc.DialOption{grpc.WithUserAgent(userAgent)},
 	}
 	cfg = ApplyGRPCEnvConfigs(cfg)
 	for _, opt := range opts {

exporters/otlp/otlpmetric/otlpmetricgrpc/version.go

@@ -0,0 +1,20 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package otlpmetricgrpc // import "go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc"
+
+// Version is the current release version of the OpenTelemetry OTLP metrics exporter in use.
+func Version() string {
+	return "0.42.0"
+}

exporters/otlp/otlpmetric/otlpmetricgrpc/version_test.go

@@ -0,0 +1,32 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package otlpmetricgrpc
+
+import (
+	"regexp"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+// regex taken from https://github.com/Masterminds/semver/tree/v3.1.1
+var versionRegex = regexp.MustCompile(`^v?([0-9]+)(\.[0-9]+)?(\.[0-9]+)?` +
+	`(-([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?` +
+	`(\+([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?$`)
+
+func TestVersionSemver(t *testing.T) {
+	v := Version()
+	assert.NotNil(t, versionRegex.FindStringSubmatch(v), "version is not semver: %s", v)
+}

exporters/otlp/otlpmetric/otlpmetrichttp/client.go

@@ -30,7 +30,6 @@ import (
 	"google.golang.org/protobuf/proto"
 
 	"go.opentelemetry.io/otel"
-	"go.opentelemetry.io/otel/exporters/otlp/otlpmetric"
 	"go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp/internal"
 	"go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp/internal/oconf"
 	"go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp/internal/retry"
@@ -89,7 +88,7 @@ func newClient(cfg oconf.Config) (*client, error) {
 		return nil, err
 	}
 
-	userAgent := "OTel OTLP Exporter Go/" + otlpmetric.Version()
+	userAgent := "OTel Go OTLP over HTTP/protobuf metrics exporter/" + Version()
 	req.Header.Set("User-Agent", userAgent)
 
 	if n := len(cfg.Metrics.Headers); n > 0 {

exporters/otlp/otlpmetric/otlpmetrichttp/client_test.go

@@ -93,7 +93,7 @@ func TestConfig(t *testing.T) {
 		require.NoError(t, exp.Shutdown(ctx))
 
 		got := coll.Headers()
-		require.Regexp(t, "OTel OTLP Exporter Go/[01]\\..*", got)
+		require.Regexp(t, "OTel Go OTLP over HTTP/protobuf metrics exporter/[01]\\..*", got)
 		require.Contains(t, got, key)
 		assert.Equal(t, got[key], []string{headers[key]})
 	})

exporters/otlp/otlpmetric/otlpmetrichttp/go.mod

@@ -9,7 +9,6 @@ require (
 	github.com/google/go-cmp v0.6.0
 	github.com/stretchr/testify v1.8.4
 	go.opentelemetry.io/otel v1.19.0
-	go.opentelemetry.io/otel/exporters/otlp/otlpmetric v0.42.0
 	go.opentelemetry.io/otel/sdk v1.19.0
 	go.opentelemetry.io/otel/sdk/metric v1.19.0
 	go.opentelemetry.io/proto/otlp v1.0.0
@@ -25,6 +24,7 @@ require (
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.16.0 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rogpeppe/go-internal v1.11.0 // indirect
 	go.opentelemetry.io/otel/metric v1.19.0 // indirect
 	go.opentelemetry.io/otel/trace v1.19.0 // indirect
 	golang.org/x/net v0.17.0 // indirect
@@ -41,8 +41,6 @@ replace go.opentelemetry.io/otel/sdk => ../../../../sdk
 
 replace go.opentelemetry.io/otel/sdk/metric => ../../../../sdk/metric
 
-replace go.opentelemetry.io/otel/exporters/otlp/otlpmetric => ../
-
 replace go.opentelemetry.io/otel/metric => ../../../../metric
 
 replace go.opentelemetry.io/otel/trace => ../../../../trace

exporters/otlp/otlpmetric/otlpmetrichttp/go.sum

@@ -22,7 +22,8 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
+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/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 go.opentelemetry.io/proto/otlp v1.0.0 h1:T0TX0tmXU8a3CbNXzEKGeU5mIVOdf0oykP+u2lIVU/I=

exporters/otlp/otlpmetric/otlpmetrichttp/internal/oconf/options.go

@@ -30,7 +30,6 @@ import (
 	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/encoding/gzip"
 
-	"go.opentelemetry.io/otel/exporters/otlp/otlpmetric"
 	"go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp/internal/retry"
 	"go.opentelemetry.io/otel/sdk/metric"
 )
@@ -122,7 +121,6 @@ func cleanPath(urlPath string, defaultPath string) string {
 // NewGRPCConfig returns a new Config with all settings applied from opts and
 // any unset setting using the default gRPC config values.
 func NewGRPCConfig(opts ...GRPCOption) Config {
-	userAgent := "OTel OTLP Exporter Go/" + otlpmetric.Version()
 	cfg := Config{
 		Metrics: SignalConfig{
 			Endpoint:    fmt.Sprintf("%s:%d", DefaultCollectorHost, DefaultCollectorGRPCPort),
@@ -134,7 +132,6 @@ func NewGRPCConfig(opts ...GRPCOption) Config {
 			AggregationSelector: metric.DefaultAggregationSelector,
 		},
 		RetryConfig: retry.DefaultConfig,
-		DialOptions: []grpc.DialOption{grpc.WithUserAgent(userAgent)},
 	}
 	cfg = ApplyGRPCEnvConfigs(cfg)
 	for _, opt := range opts {

exporters/otlp/otlpmetric/otlpmetrichttp/version.go

@@ -0,0 +1,20 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package otlpmetrichttp // import "go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp"
+
+// Version is the current release version of the OpenTelemetry OTLP metrics exporter in use.
+func Version() string {
+	return "0.42.0"
+}

exporters/otlp/otlpmetric/otlpmetrichttp/version_test.go

@@ -0,0 +1,32 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package otlpmetrichttp
+
+import (
+	"regexp"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+// regex taken from https://github.com/Masterminds/semver/tree/v3.1.1
+var versionRegex = regexp.MustCompile(`^v?([0-9]+)(\.[0-9]+)?(\.[0-9]+)?` +
+	`(-([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?` +
+	`(\+([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?$`)
+
+func TestVersionSemver(t *testing.T) {
+	v := Version()
+	assert.NotNil(t, versionRegex.FindStringSubmatch(v), "version is not semver: %s", v)
+}

internal/shared/otlp/otlpmetric/oconf/options.go.tmpl

@@ -30,7 +30,6 @@ import (
 	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/encoding/gzip"
 
-	"go.opentelemetry.io/otel/exporters/otlp/otlpmetric"
 	"{{ .retryImportPath }}"
 	"go.opentelemetry.io/otel/sdk/metric"
 )
@@ -122,7 +121,6 @@ func cleanPath(urlPath string, defaultPath string) string {
 // NewGRPCConfig returns a new Config with all settings applied from opts and
 // any unset setting using the default gRPC config values.
 func NewGRPCConfig(opts ...GRPCOption) Config {
-	userAgent := "OTel OTLP Exporter Go/" + otlpmetric.Version()
 	cfg := Config{
 		Metrics: SignalConfig{
 			Endpoint:    fmt.Sprintf("%s:%d", DefaultCollectorHost, DefaultCollectorGRPCPort),
@@ -134,7 +132,6 @@ func NewGRPCConfig(opts ...GRPCOption) Config {
 			AggregationSelector: metric.DefaultAggregationSelector,
 		},
 		RetryConfig: retry.DefaultConfig,
-		DialOptions: []grpc.DialOption{grpc.WithUserAgent(userAgent)},
 	}
 	cfg = ApplyGRPCEnvConfigs(cfg)
 	for _, opt := range opts {