add plugin iniformation

pkg/registry/apis/datasource/openapi.go

@@ -19,6 +19,18 @@ func (b *DataSourceAPIBuilder) PostProcessOpenAPI(oas *spec3.OpenAPI) (*spec3.Op
 	// The plugin description
 	oas.Info.Description = b.pluginJSON.Info.Description
 
+	// Add plugin information
+	info := map[string]any{
+		"plugin": b.pluginJSON.ID,
+	}
+	if b.pluginJSON.Info.Version != "" {
+		info["version"] = b.pluginJSON.Info.Version
+	}
+	if b.pluginJSON.Info.Build.Time > 0 {
+		info["build"] = b.pluginJSON.Info.Build.Time
+	}
+	oas.Info.VendorExtensible.AddExtension("plugin", info)
+
 	// The root api URL
 	root := "/apis/" + b.datasourceResourceInfo.GroupVersion().String() + "/"
 

pkg/tests/apis/openapi_snapshots/testdata.datasource.grafana.app-v0alpha1.json

@@ -2,7 +2,11 @@
   "openapi": "3.0.0",
   "info": {
     "description": "Generates test data in different forms",
-    "title": "testdata.datasource.grafana.app/v0alpha1"
+    "title": "testdata.datasource.grafana.app/v0alpha1",
+    "plugin": {
+      "plugin": "grafana-testdata-datasource",
+      "version": "12.4.0-pre"
+    }
   },
   "paths": {
     "/apis/testdata.datasource.grafana.app/v0alpha1/": {