Add fee delta to acceleration data

backend/src/api/bitcoin/bitcoin.routes.ts

@@ -165,6 +165,7 @@ class BitcoinRoutes {
           acceleration: tx.acceleration,
           acceleratedBy: tx.acceleratedBy || undefined,
           acceleratedAt: tx.acceleratedAt || undefined,
+          feeDelta: tx.feeDelta || undefined,
         });
         return;
       }

backend/src/api/mempool-blocks.ts

@@ -453,6 +453,7 @@ class MempoolBlocks {
             mempoolTx.acceleration = true;
             mempoolTx.acceleratedBy = isAcceleratedBy[txid] || acceleration?.pools;
             mempoolTx.acceleratedAt = acceleration?.added;
+            mempoolTx.feeDelta = acceleration?.feeDelta;
             for (const ancestor of mempoolTx.ancestors || []) {
               if (!mempool[ancestor.txid].acceleration) {
                 mempool[ancestor.txid].cpfpDirty = true;
@@ -460,6 +461,7 @@ class MempoolBlocks {
               mempool[ancestor.txid].acceleration = true;
               mempool[ancestor.txid].acceleratedBy = mempoolTx.acceleratedBy;
               mempool[ancestor.txid].acceleratedAt = mempoolTx.acceleratedAt;
+              mempool[ancestor.txid].feeDelta = mempoolTx.feeDelta;
               isAcceleratedBy[ancestor.txid] = mempoolTx.acceleratedBy;
             }
           } else {

backend/src/api/websocket-handler.ts

@@ -823,6 +823,7 @@ class WebsocketHandler {
               accelerated: mempoolTx.acceleration || undefined,
               acceleratedBy: mempoolTx.acceleratedBy || undefined,
               acceleratedAt: mempoolTx.acceleratedAt || undefined,
+              feeDelta: mempoolTx.feeDelta || undefined,
             },
             accelerationPositions: memPool.getAccelerationPositions(mempoolTx.txid),
           };
@@ -864,6 +865,7 @@ class WebsocketHandler {
               accelerated: mempoolTx.acceleration || undefined,
               acceleratedBy: mempoolTx.acceleratedBy || undefined,
               acceleratedAt: mempoolTx.acceleratedAt || undefined,
+              feeDelta: mempoolTx.feeDelta || undefined,
             };
             if (!mempoolTx.cpfpChecked) {
               calculateMempoolTxCpfp(mempoolTx, newMempool);
@@ -1138,6 +1140,7 @@ class WebsocketHandler {
                 accelerated: mempoolTx.acceleration || undefined,
                 acceleratedBy: mempoolTx.acceleratedBy || undefined,
                 acceleratedAt: mempoolTx.acceleratedAt || undefined,
+                feeDelta: mempoolTx.feeDelta || undefined,
               },
               accelerationPositions: memPool.getAccelerationPositions(mempoolTx.txid),
             });
@@ -1160,6 +1163,7 @@ class WebsocketHandler {
                 accelerated: mempoolTx.acceleration || undefined,
                 acceleratedBy: mempoolTx.acceleratedBy || undefined,
                 acceleratedAt: mempoolTx.acceleratedAt || undefined,
+                feeDelta: mempoolTx.feeDelta || undefined,
               };
             }
           }

backend/src/mempool.interfaces.ts

@@ -126,6 +126,7 @@ export interface TransactionExtended extends IEsploraApi.Transaction {
   acceleration?: boolean;
   acceleratedBy?: number[];
   acceleratedAt?: number;
+  feeDelta?: number;
   replacement?: boolean;
   uid?: number;
   flags?: number;
@@ -449,7 +450,7 @@ export interface OptimizedStatistic {
 
 export interface TxTrackingInfo {
   replacedBy?: string,
-  position?: { block: number, vsize: number, accelerated?: boolean, acceleratedBy?: number[], acceleratedAt?: number },
+  position?: { block: number, vsize: number, accelerated?: boolean, acceleratedBy?: number[], acceleratedAt?: number, feeDelta?: number },
   cpfp?: {
     ancestors?: Ancestor[],
     bestDescendant?: Ancestor | null,
@@ -462,6 +463,7 @@ export interface TxTrackingInfo {
   accelerated?: boolean,
   acceleratedBy?: number[],
   acceleratedAt?: number,
+  feeDelta?: number,
   confirmed?: boolean
 }
 

frontend/src/app/components/transaction/transaction.component.ts

@@ -816,6 +816,7 @@ export class TransactionComponent implements OnInit, AfterViewInit, OnDestroy {
       this.tx.acceleration = cpfpInfo.acceleration;
       this.tx.acceleratedBy = cpfpInfo.acceleratedBy;
       this.tx.acceleratedAt = cpfpInfo.acceleratedAt;
+      this.tx.feeDelta = cpfpInfo.feeDelta;
       this.setIsAccelerated(firstCpfp);
     }
 

frontend/src/app/interfaces/electrs.interface.ts

@@ -22,6 +22,7 @@ export interface Transaction {
   acceleration?: boolean;
   acceleratedBy?: number[];
   acceleratedAt?: number;
+  feeDelta?: number;
   deleteAfter?: number;
   _unblinded?: any;
   _deduced?: boolean;

frontend/src/app/interfaces/node-api.interface.ts

@@ -31,6 +31,7 @@ export interface CpfpInfo {
   acceleration?: boolean;
   acceleratedBy?: number[];
   acceleratedAt?: number;
+  feeDelta?: number;
 }
 
 export interface RbfInfo {