chore: Add rrweb node types event size SM (#1592)

Co-authored-by: Jordan Porter <insomniacrampage@hotmail.com>

Author: ptang-nr

.github/actions/supportability-check/index.js

@@ -7,7 +7,7 @@ const REPO = 'newrelic-browser-agent';
 const PULL_NUMBER = process.env.PR_NUMBER;
 
 const SEARCH_STRINGS = ['SUPPORTABILITY_METRIC_CHANNEL', '.reportSupportabilityMetric', 'storeSupportabilityMetrics'];
-const SEARCH_FILE = 'supportability_metrics.md';
+const SEARCH_FILE = 'docs/supportability-metrics.md';
 const SEARCH_DIR = 'src/'; // Change this to your target directory
 
 const octokit = new Octokit({ auth: GITHUB_TOKEN });
@@ -69,4 +69,4 @@ async function main() {
 
 main().catch(err => {
   core.setFailed(err.message);
-});
+});

docs/supportability-metrics.md

@@ -429,3 +429,13 @@ EventBuffer/soft_navigations/Dropped/Bytes
 * audit/session_replay/hasError/true/positive
 <!--- Session replay had hasError false and no js error harvest occurred (true negative) --->
 * audit/session_replay/hasError/true/negative
+
+### Session Replay
+<!-- node type 1 = Preload -->
+* rrweb/node/1/bytes
+<!-- node type 2 = Full snapshot -->
+* rrweb/node/2/bytes
+<!-- node type 3 = Incremental snapshot -->
+* rrweb/node/3/bytes
+<!-- node type 4 = Meta -->
+* rrweb/node/4/bytes

src/features/session_replay/shared/recorder.js

@@ -180,6 +180,7 @@ export class Recorder {
     const eventBytes = event.__serialized.length
     /** The estimated size of the payload after compression */
     const payloadSize = this.getPayloadSize(eventBytes)
+    handle(SUPPORTABILITY_METRIC_CHANNEL, ['rrweb/node/' + event.type + '/bytes', eventBytes], undefined, FEATURE_NAMES.metrics, this.ee)
     // Checkout events are flags by the recording lib that indicate a fullsnapshot was taken every n ms. These are important
     // to help reconstruct the replay later and must be included.  While waiting and buffering for errors to come through,
     // each time we see a new checkout, we can drop the old data.

tests/unit/features/session_replay/shared/recorder.test.js

@@ -18,7 +18,8 @@ describe('recorder', () => {
         }
       },
       ee: {
-        emit: () => {}
+        emit: () => {},
+        buffer: () => {}
       },
       featAggregate: {
         gzipper: jest.fn(),