add cloudprovider metrics

Makefile

@@ -79,7 +79,7 @@ codegen: ## Generate code. Must be run if changes are made to ./pkg/apis/...
 	hack/boilerplate.sh
 
 docgen: ## Generate docs
-	go run hack/docs/metrics_gen_docs.go pkg/controllers website/content/en/preview/tasks/metrics.md
+	go run hack/docs/metrics_gen_docs.go pkg/ website/content/en/preview/tasks/metrics.md
 
 release: ## Generate release manifests and publish a versioned container image.
 	$(WITH_GOFLAGS) ./hack/release.sh

hack/docs/metrics_gen_docs.go

@@ -134,7 +134,8 @@ func bySubsystem(metrics []metricInfo) func(i int, j int) bool {
 	subSystemSortOrder["provisioner"] = 1
 	subSystemSortOrder["nodes"] = 2
 	subSystemSortOrder["pods"] = 3
-	subSystemSortOrder["allocation_controller"] = 4
+	subSystemSortOrder["cloudprovider"] = 4
+	subSystemSortOrder["allocation_controller"] = 5
 	return func(i, j int) bool {
 		lhs := metrics[i]
 		rhs := metrics[j]
@@ -157,7 +158,8 @@ func handleVariableDeclaration(v *ast.GenDecl) []metricInfo {
 			if !ok {
 				continue
 			}
-			if fmt.Sprintf("%s", ce.Fun.(*ast.SelectorExpr).X) != "prometheus" {
+			funcPkg := getFuncPackage(ce.Fun)
+			if funcPkg != "prometheus" {
 				continue
 			}
 			if len(ce.Args) != 2 {
@@ -201,3 +203,14 @@ func handleVariableDeclaration(v *ast.GenDecl) []metricInfo {
 	}
 	return metrics
 }
+
+func getFuncPackage(fun ast.Expr) string {
+	if sel, ok := fun.(*ast.SelectorExpr); ok {
+		return fmt.Sprintf("%s", sel.X)
+	}
+	if ident, ok := fun.(*ast.Ident); ok {
+		return ident.String()
+	}
+	log.Fatalf("unsupported func expression %T, %v", fun, fun)
+	return ""
+}

website/content/en/preview/tasks/metrics.md

@@ -44,6 +44,11 @@ Node total pod requests are the resources requested by non-DaemonSet pods bound
 ### `karpenter_pods_state`
 Pod state is the current state of pods. This metric can be used several ways as it is labeled by the pod name, namespace, owner, node, provisioner name, zone, architecture, capacity type, instance type and pod phase.
 
+## Cloudprovider Metrics
+
+### `karpenter_cloudprovider_duration_seconds`
+Duration of cloud provider method calls. Labeled by the controller, method name and provider.
+
 ## Allocation_controller Metrics
 
 ### `karpenter_allocation_controller_bind_duration_seconds`