reduce latest rbf websocket data

backend/src/api/websocket-handler.ts

@@ -12,7 +12,7 @@ import { Common } from './common';
 import loadingIndicators from './loading-indicators';
 import config from '../config';
 import transactionUtils from './transaction-utils';
-import rbfCache from './rbf-cache';
+import rbfCache, { ReplacementInfo } from './rbf-cache';
 import difficultyAdjustment from './difficulty-adjustment';
 import feeApi from './fee-api';
 import BlocksAuditsRepository from '../repositories/BlocksAuditsRepository';
@@ -40,6 +40,7 @@ class WebsocketHandler {
 
   private socketData: { [key: string]: string } = {};
   private serializedInitData: string = '{}';
+  private lastRbfSummary: ReplacementInfo | null = null;
 
   constructor() { }
 
@@ -225,6 +226,15 @@ class WebsocketHandler {
             }
           }
 
+          if (parsedMessage && parsedMessage['track-rbf-summary'] != null) {
+            if (parsedMessage['track-rbf-summary']) {
+              client['track-rbf-summary'] = true;
+              response['rbfLatestSummary'] = this.socketData['rbfSummary'];
+            } else {
+              client['track-rbf-summary'] = false;
+            }
+          }
+
           if (parsedMessage.action === 'init') {
             if (!this.socketData['blocks']?.length || !this.socketData['da']) {
               this.updateSocketData();
@@ -395,10 +405,13 @@ class WebsocketHandler {
     const rbfChanges = rbfCache.getRbfChanges();
     let rbfReplacements;
     let fullRbfReplacements;
+    let rbfSummary;
     if (Object.keys(rbfChanges.trees).length) {
       rbfReplacements = rbfCache.getRbfTrees(false);
       fullRbfReplacements = rbfCache.getRbfTrees(true);
+      rbfSummary = rbfCache.getLatestRbfSummary();
     }
+
     for (const deletedTx of deletedTransactions) {
       rbfCache.evict(deletedTx.txid);
     }
@@ -409,7 +422,7 @@ class WebsocketHandler {
     const latestTransactions = newTransactions.slice(0, 6).map((tx) => Common.stripTransaction(tx));
 
     // update init data
-    this.updateSocketDataFields({
+    const socketDataFields = {
       'mempoolInfo': mempoolInfo,
       'vBytesPerSecond': vBytesPerSecond,
       'mempool-blocks': mBlocks,
@@ -417,7 +430,11 @@ class WebsocketHandler {
       'loadingIndicators': loadingIndicators.getLoadingIndicators(),
       'da': da?.previousTime ? da : undefined,
       'fees': recommendedFees,
-    });
+    };
+    if (rbfSummary) {
+      socketDataFields['rbfSummary'] = rbfSummary;
+    }
+    this.updateSocketDataFields(socketDataFields);
 
     // cache serialized objects to avoid stringify-ing the same thing for every client
     const responseCache = { ...this.socketData };
@@ -601,6 +618,10 @@ class WebsocketHandler {
         response['rbfLatest'] = getCachedResponse('fullrbfLatest', fullRbfReplacements);
       }
 
+      if (client['track-rbf-summary'] && rbfSummary) {
+        response['rbfLatestSummary'] = getCachedResponse('rbfLatestSummary', rbfSummary);
+      }
+
       if (Object.keys(response).length) {
         const serializedResponse = this.serializeResponse(response);
         client.send(serializedResponse);