Add Prometheus Helm 14.x metrics provider (#6157)

src/main/prometheus/helm-14.ts

@@ -0,0 +1,36 @@
+/**
+ * Copyright (c) OpenLens Authors. All rights reserved.
+ * Licensed under MIT License. See LICENSE in root directory for more information.
+ */
+
+import { PrometheusLens } from "./lens";
+import type { CoreV1Api } from "@kubernetes/client-node";
+import type { PrometheusService } from "./provider-registry";
+import { isRequestError } from "../../common/utils";
+
+export class PrometheusHelm14 extends PrometheusLens {
+  readonly id: string = "helm14";
+  readonly name: string = "Helm 14.x";
+  readonly rateAccuracy: string = "5m";
+  readonly isConfigurable: boolean = true;
+
+  public async getPrometheusService(client: CoreV1Api): Promise<PrometheusService> {
+    try {
+      const selector = "app=prometheus,component=server,heritage=Helm";
+      const { body: { items: [service] }} = await client.listServiceForAllNamespaces(undefined, undefined, undefined, selector);
+
+      if (service?.metadata?.namespace && service.metadata.name && service.spec?.ports && service.metadata?.labels?.chart?.startsWith("prometheus-14")) {
+        return {
+          id: this.id,
+          namespace: service.metadata.namespace,
+          service: service.metadata.name,
+          port: service.spec.ports[0].port,
+        };
+      }
+    } catch (error) {
+      throw new Error(`Failed to list services for Prometheus ${this.name} in all namespaces: ${isRequestError(error) ? error.response?.body.message : error}`);
+    }
+
+    throw new Error(`No service found for Prometheus ${this.name} from any namespace`);
+  }
+}