Merge pull request 'feat: query Polaris dashboard API instead of ConfigMap' (#10) from feat/polaris-api-datasource into main

Reviewed-on: farhoodliquor/polaris-headlamp-plugin#10

claude.md

@@ -4,7 +4,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 ## Project Overview
 
-Headlamp plugin that surfaces Fairwinds Polaris audit results inside the Headlamp UI. Reads from `ConfigMap/polaris-dashboard` in the `polaris` namespace (key: `dashboard.json`). Target Headlamp ≥ v0.26.
+Headlamp plugin that surfaces Fairwinds Polaris audit results inside the Headlamp UI. Queries the Polaris dashboard API via the Kubernetes service proxy (`/api/v1/namespaces/polaris/services/polaris-dashboard:80/proxy/results.json`). Target Headlamp ≥ v0.26.
 
 ## Build & Development Commands
 
@@ -36,11 +36,11 @@ src/
     └── PolarisView.tsx           # Main page: score badge, check summary, cluster info, error states, refresh interval selector
 ```
 
-Single sidebar page at `/polaris`. Data is cached in React state and refreshed on a user-configurable interval (stored in localStorage under `polaris-plugin-refresh-interval`, default 5 minutes). The `usePolarisData` hook wraps `ConfigMap.useGet` with caching so stale data is shown while refreshing.
+Single sidebar page at `/polaris`. Data is fetched via `ApiProxy.request` to the Polaris dashboard service proxy and refreshed on a user-configurable interval (stored in localStorage under `polaris-plugin-refresh-interval`, default 5 minutes). Score is computed from result counts (pass/total).
 
 ## Key Constraints
 
-- **Data source**: `ConfigMap/polaris-dashboard` in `polaris` namespace, key `dashboard.json`. No CRDs, no external API calls, no cluster write operations.
+- **Data source**: Polaris dashboard API via K8s service proxy. Requires Polaris deployed in the `polaris` namespace with a `polaris-dashboard` service. No CRDs, no cluster write operations.
 - **UI components**: Use only Headlamp-provided components (`@kinvolk/headlamp-plugin/lib/CommonComponents`). Do not import raw MUI packages. No custom theming.
 - **Error handling**: Must handle 403 (RBAC denied), 404 (Polaris not installed), malformed JSON, and loading states with distinct visual states.
 - **TypeScript strictness**: No `any`, no implicit `unknown` casting, no dead code, no unused imports.

src/api/polaris.ts

@@ -1,4 +1,4 @@
-import { K8s } from '@kinvolk/headlamp-plugin/lib';
+import { ApiProxy } from '@kinvolk/headlamp-plugin/lib';
 import React from 'react';
 
 // --- Polaris AuditData schema (matches pkg/validator/output.go) ---
@@ -52,7 +52,6 @@ export interface AuditData {
   DisplayName: string;
   ClusterInfo: ClusterInfo;
   Results: Result[];
-  Score: number;
 }
 
 // --- Result counting ---
@@ -112,8 +111,18 @@ export function setRefreshInterval(seconds: number): void {
   localStorage.setItem(STORAGE_KEY, String(seconds));
 }
 
+// --- Score computation ---
+
+export function computeScore(counts: ResultCounts): number {
+  if (counts.total === 0) return 0;
+  return Math.round((counts.pass / counts.total) * 100);
+}
+
 // --- Data fetching hook ---
 
+const POLARIS_API_PATH =
+  '/api/v1/namespaces/polaris/services/polaris-dashboard:80/proxy/results.json';
+
 interface PolarisDataState {
   data: AuditData | null;
   loading: boolean;
@@ -121,87 +130,54 @@ interface PolarisDataState {
 }
 
 export function usePolarisData(refreshIntervalSeconds: number): PolarisDataState {
-  const [configMap, fetchError] = K8s.ResourceClasses.ConfigMap.useGet(
+  const [data, setData] = React.useState<AuditData | null>(null);
-    'polaris-dashboard',
+  const [loading, setLoading] = React.useState(true);
-    'polaris'
+  const [error, setError] = React.useState<string | null>(null);
-  );
+  const [tick, setTick] = React.useState(0);
-  const [cachedData, setCachedData] = React.useState<AuditData | null>(null);
-  const [parseError, setParseError] = React.useState<string | null>(null);
-  const [lastFetchTime, setLastFetchTime] = React.useState<number>(0);
-  const [, setTick] = React.useState(0);
 
-  // Parse ConfigMap data when it arrives
   React.useEffect(() => {
-    if (!configMap) {
+    let cancelled = false;
-      return;
-    }
-    const dataMap = configMap.data as Record<string, string> | undefined;
-    const raw = dataMap?.['dashboard.json'];
-    if (!raw) {
-      setParseError('ConfigMap exists but dashboard.json key is missing.');
-      return;
-    }
-    try {
-      const parsed: AuditData = JSON.parse(raw);
-      setCachedData(parsed);
-      setParseError(null);
-      setLastFetchTime(Date.now());
-    } catch {
-      setParseError('Failed to parse dashboard.json: malformed JSON.');
-    }
-  }, [configMap]);
 
-  // Periodic refresh via re-render trigger
+    async function fetchData() {
-  React.useEffect(() => {
+      try {
-    if (refreshIntervalSeconds <= 0) {
+        const result: AuditData = await ApiProxy.request(POLARIS_API_PATH);
-      return;
+        if (!cancelled) {
+          setData(result);
+          setError(null);
+          setLoading(false);
+        }
+      } catch (err: unknown) {
+        if (cancelled) return;
+        const status = (err as { status?: number }).status;
+        if (status === 403) {
+          setError(
+            'Access denied (403). Check that your RBAC permissions allow proxying to the Polaris service.'
+          );
+        } else if (status === 404 || status === 503) {
+          setError(
+            'Polaris dashboard not reachable. Ensure Polaris is installed in the polaris namespace.'
+          );
+        } else {
+          setError(`Failed to fetch Polaris data: ${String(err)}`);
+        }
+        setLoading(false);
+      }
     }
+
+    fetchData();
+    return () => {
+      cancelled = true;
+    };
+  }, [tick]);
+
+  // Periodic refresh
+  React.useEffect(() => {
+    if (refreshIntervalSeconds <= 0) return;
     const intervalId = window.setInterval(() => {
       setTick(t => t + 1);
     }, refreshIntervalSeconds * 1000);
     return () => window.clearInterval(intervalId);
   }, [refreshIntervalSeconds]);
 
-  // Determine error state
+  return { data, loading, error };
-  if (fetchError) {
-    const status = (fetchError as { status?: number }).status;
-    if (status === 403) {
-      return {
-        data: cachedData,
-        loading: false,
-        error:
-          'Access denied (403). Check that your RBAC permissions allow reading ConfigMaps in the polaris namespace.',
-      };
-    }
-    if (status === 404) {
-      return {
-        data: cachedData,
-        loading: false,
-        error:
-          'Polaris dashboard ConfigMap not found (404). Ensure Polaris is installed in the polaris namespace.',
-      };
-    }
-    return {
-      data: cachedData,
-      loading: false,
-      error: `Failed to fetch Polaris data: ${String(fetchError)}`,
-    };
-  }
-
-  if (parseError) {
-    return { data: cachedData, loading: false, error: parseError };
-  }
-
-  const isLoading = !configMap && !fetchError;
-
-  // Return cached data while loading if we have it
-  if (isLoading && cachedData && lastFetchTime > 0) {
-    return { data: cachedData, loading: false, error: null };
-  }
-
-  return {
-    data: cachedData,
-    loading: isLoading,
-    error: null,
-  };
 }

src/components/PolarisView.tsx

@@ -2,6 +2,7 @@ import { Loader, SectionBox, SectionHeader } from '@kinvolk/headlamp-plugin/lib/
 import React from 'react';
 import {
   AuditData,
+  computeScore,
   countResults,
   getRefreshInterval,
   ResultCounts,
@@ -69,10 +70,11 @@ function ScoreBadge(props: { score: number }) {
 }
 
 function OverviewSection(props: { data: AuditData; counts: ResultCounts }) {
+  const score = computeScore(props.counts);
   return (
     <>
       <SectionBox title="Score">
-        <ScoreBadge score={props.data.Score} />
+        <ScoreBadge score={score} />
       </SectionBox>
       <SectionBox title="Check Summary">
         <div