add version file for Autodetect detector

CHANGELOG.md

@@ -16,6 +16,7 @@ The next release will require at least [Go 1.25].
 - `WithSpanKind` option in `go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc` to override the default span kind. (#8506)
 - Add `const Version` in `go.opentelemetry.io/contrib/bridges/otelzap`. (#8544)
 - Support testing of [Go 1.26]. (#8549)
+- Add `const Version` in `go.opentelemetry.io/contrib/detectors/autodetect`. (#8555)
 - Add `const Version` in `go.opentelemetry.io/contrib/detectors/azure/azurevm`. (#8553)
 - Add `const Version` in `go.opentelemetry.io/contrib/processors/baggagecopy`. (#8557)
 - Add `const Version` in `go.opentelemetry.io/contrib/detectors/aws/lambda`. (#8510)

detectors/autodetect/go.mod

@@ -3,6 +3,7 @@ module go.opentelemetry.io/contrib/detectors/autodetect
 go 1.24.0
 
 require (
+	github.com/stretchr/testify v1.11.1
 	go.opentelemetry.io/contrib/detectors/aws/ec2/v2 v2.2.0
 	go.opentelemetry.io/contrib/detectors/aws/ecs v1.40.0
 	go.opentelemetry.io/contrib/detectors/aws/eks v1.40.0
@@ -58,6 +59,7 @@ require (
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
 	go.opentelemetry.io/otel/metric v1.40.0 // indirect
@@ -73,6 +75,7 @@ require (
 	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/evanphx/json-patch.v4 v4.13.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 	k8s.io/api v0.34.3 // indirect
 	k8s.io/apimachinery v0.34.3 // indirect
 	k8s.io/client-go v0.34.3 // indirect

detectors/autodetect/version.go

@@ -0,0 +1,7 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package autodetect // import "go.opentelemetry.io/contrib/detectors/autodetect"
+
+// Version is the current release version of the autodetect detector.
+const Version = "0.12.0"

detectors/autodetect/version_test.go

@@ -0,0 +1,24 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package autodetect_test
+
+import (
+	"regexp"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"go.opentelemetry.io/contrib/detectors/autodetect"
+)
+
+// regex taken from https://semver.org/#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string
+var versionRegex = regexp.MustCompile(`^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)` +
+	`(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)` +
+	`(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?` +
+	`(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$`)
+
+func TestVersionSemver(t *testing.T) {
+	v := autodetect.Version
+	assert.NotNil(t, versionRegex.FindStringSubmatch(v), "version is not semver: %s", v)
+}