fix(rum-api-client): extra RUM Bundler requests logging (#558)

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- [ ] make sure to link the related issues in this description
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## Related Issues


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packages/spacecat-shared-rum-api-client/src/common/rum-bundler-client.js

@@ -186,11 +186,17 @@ async function fetchBundles(opts, log) {
 
   const chunks = getUrlChunks(urls, CHUNK_SIZE);
 
+  let totalTransferSize = 0;
+
   const result = [];
   for (const chunk of chunks) {
-    const responses = await Promise.all(chunk.map((url) => {
-      log.info(`Retrieving RUM bundles. Granularity: ${granularity}. Domain: ${domain}`);
-      return fetch(url);
+    // eslint-disable-next-line no-loop-func
+    const responses = await Promise.all(chunk.map(async (url) => {
+      const response = await fetch(url);
+      const xCache = response.headers.get('x-cache')?.toLowerCase().includes('hit');
+      log.info(`Retrieving RUM bundles. Source: ${xCache ? 'CDN' : 'ORIGIN'}. Granularity: ${granularity}. Domain: ${domain}`);
+      totalTransferSize += parseInt(response.headers.get('content-length'), 10);
+      return response;
     }));
     const bundles = await Promise.all(responses.map((response) => response.json()));
 
@@ -201,6 +207,7 @@ async function fetchBundles(opts, log) {
         .forEach((bundle) => result.push(bundle));
     });
   }
+  log.info(`Retrieved RUM bundles. Total transfer size (in KB): ${(totalTransferSize / 1024).toFixed(2)}`);
   return mergeBundlesWithSameId(result);
 }
 

packages/spacecat-shared-rum-api-client/src/index.js

@@ -9,6 +9,7 @@
  * OF ANY KIND, either express or implied. See the License for the specific language
  * governing permissions and limitations under the License.
  */
+import { hasText } from '@adobe/spacecat-shared-utils';
 import { fetchBundles } from './common/rum-bundler-client.js';
 import notfound from './functions/404.js';
 import notfoundInternalLinks from './functions/404-internal-links.js';
@@ -36,6 +37,14 @@ const HANDLERS = {
   'high-organic-low-ctr': highOrganicLowCtr,
 };
 
+function sanitize(opts) {
+  return {
+    ...opts,
+    /* c8 ignore next 1 */
+    ...(hasText(opts.domainkey) && { domainkey: `${opts.domainkey.slice(0, 3)}***` }),
+  };
+}
+
 export default class RUMAPIClient {
   static createFrom(context) {
     const { log = console } = context;
@@ -66,7 +75,7 @@ export default class RUMAPIClient {
 
       return handler(bundles, opts);
     } catch (e) {
-      throw new Error(`Query '${query}' failed. Opts: ${JSON.stringify(opts)}. Reason: ${e.message}`);
+      throw new Error(`Query '${query}' failed. Opts: ${JSON.stringify(sanitize(opts))}. Reason: ${e.message}`);
     }
   }
 
@@ -105,7 +114,7 @@ export default class RUMAPIClient {
 
       return results;
     } catch (e) {
-      throw new Error(`Multi query failed. Queries: ${JSON.stringify(queries)}, Opts: ${JSON.stringify(opts)}. Reason: ${e.message}`);
+      throw new Error(`Multi query failed. Queries: ${JSON.stringify(queries)}, Opts: ${JSON.stringify(sanitize(opts))}. Reason: ${e.message}`);
     }
   }
 }