ubi, config upload

Author: mateon01

opensearch/opensearch_ubi/.gitignore

@@ -6,7 +6,6 @@ dist/
 node_modules/
 
 # TypeScript build
-*.js
 *.d.ts
 !jest.config.js
 

opensearch/opensearch_ubi/webapp-frontend/src/config.js

@@ -0,0 +1,70 @@
+/**
+ * Runtime Configuration Loader
+ *
+ * Loads configuration from /config.json at runtime.
+ * This allows the API URL to be set during CDK deployment
+ * without requiring a frontend rebuild.
+ */
+
+let configPromise = null;
+let cachedConfig = null;
+
+/**
+ * Default configuration (used during development)
+ */
+const defaultConfig = {
+  apiUrl: '',  // Empty string means use relative path (for dev proxy)
+};
+
+/**
+ * Load configuration from /config.json
+ * Falls back to environment variable or default config if not available.
+ */
+export async function loadConfig() {
+  if (cachedConfig) {
+    return cachedConfig;
+  }
+
+  if (!configPromise) {
+    configPromise = (async () => {
+      try {
+        const response = await fetch('/config.json');
+        if (response.ok) {
+          const config = await response.json();
+          console.log('[Config] Loaded from /config.json:', config);
+          cachedConfig = config;
+          return config;
+        }
+      } catch (err) {
+        console.log('[Config] /config.json not found, using defaults');
+      }
+
+      // Fallback to environment variable (for local development)
+      const envApiUrl = import.meta.env.VITE_API_URL || '';
+      cachedConfig = {
+        ...defaultConfig,
+        apiUrl: envApiUrl,
+      };
+      console.log('[Config] Using fallback config:', cachedConfig);
+      return cachedConfig;
+    })();
+  }
+
+  return configPromise;
+}
+
+/**
+ * Get cached config synchronously (returns null if not loaded yet)
+ */
+export function getConfig() {
+  return cachedConfig;
+}
+
+/**
+ * Get API URL (must call loadConfig first)
+ */
+export function getApiUrl() {
+  return cachedConfig?.apiUrl || '';
+}
+
+export default { loadConfig, getConfig, getApiUrl };