[mdatagen]: Add otlp as supported distribution (#11527)

Signed-off-by: Bogdan Drutu <[email protected]>

.chloggen/add-otlp-distro.yaml

@@ -0,0 +1,25 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. otlpreceiver)
+component: mdatagen
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Add otlp as supported distribution
+
+# One or more tracking issues or pull requests related to the change
+issues: [11527]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: [user]

cmd/mdatagen/internal/command.go

@@ -209,10 +209,8 @@ func templatize(tmplFile string, md Metadata) *template.Template {
 					}
 					return result
 				},
-				"inc": func(i int) int { return i + 1 },
-				"distroURL": func(name string) string {
-					return Distros[name]
-				},
+				"inc":       func(i int) int { return i + 1 },
+				"distroURL": distroURL,
 				"isExporter": func() bool {
 					return md.Status.Class == "exporter"
 				},

cmd/mdatagen/internal/status.go

@@ -11,15 +11,23 @@ import (
 	"go.opentelemetry.io/collector/component"
 )
 
-// Distros is a collection of distributions that can be referenced in the metadata.yaml files.
+// distroURL returns the collection of distributions that can be referenced in the metadata.yaml files.
 // The rules below apply to every distribution added to this list:
 // - The distribution is open source and maintained by the OpenTelemetry project.
 // - The link must point to a publicly accessible repository.
-var Distros = map[string]string{
-	"core":    "https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol",
-	"contrib": "https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib",
-	"k8s":     "https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-k8s",
-	"otlp":    "https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-otlp",
+func distroURL(name string) string {
+	switch name {
+	case "core":
+		return "https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol"
+	case "contrib":
+		return "https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib"
+	case "k8s":
+		return "https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-k8s"
+	case "otlp":
+		return "https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-otlp"
+	default:
+		return ""
+	}
 }
 
 type Codeowners struct {

cmd/mdatagen/internal/status_test.go

@@ -9,6 +9,39 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
+func TestDistroURL(t *testing.T) {
+	tests := []struct {
+		input  string
+		output string
+	}{
+		{
+			input:  "core",
+			output: "https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol",
+		},
+		{
+			input:  "contrib",
+			output: "https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib",
+		},
+		{
+			input:  "k8s",
+			output: "https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-k8s",
+		},
+		{
+			input:  "otlp",
+			output: "https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-otlp",
+		},
+		{
+			input:  "not_found",
+			output: "",
+		},
+	}
+	for _, test := range tests {
+		t.Run(test.input, func(t *testing.T) {
+			assert.Equal(t, test.output, distroURL(test.input))
+		})
+	}
+}
+
 func TestSortedDistributions(t *testing.T) {
 	tests := []struct {
 		name   string