Merge pull request #5713 from mempool/mononaut/fix-missing-unsubs

clean up subscriptions & component references

frontend/src/app/components/acceleration/acceleration-fees-graph/acceleration-fees-graph.component.ts

@@ -46,6 +46,8 @@ export class AccelerationFeesGraphComponent implements OnInit, OnChanges, OnDest
 
   aggregatedHistory$: Observable<any>;
   statsSubscription: Subscription;
+  aggregatedHistorySubscription: Subscription;
+  fragmentSubscription: Subscription;
   isLoading = true;
   formatNumber = formatNumber;
   timespan = '';
@@ -80,7 +82,7 @@ export class AccelerationFeesGraphComponent implements OnInit, OnChanges, OnDest
     this.radioGroupForm = this.formBuilder.group({ dateSpan: this.miningWindowPreference });
     this.radioGroupForm.controls.dateSpan.setValue(this.miningWindowPreference);
 
-    this.route.fragment.subscribe((fragment) => {
+    this.fragmentSubscription = this.route.fragment.subscribe((fragment) => {
       if (['24h', '3d', '1w', '1m', '3m', 'all'].indexOf(fragment) > -1) {
         this.radioGroupForm.controls.dateSpan.setValue(fragment, { emitEvent: false });
       }
@@ -113,7 +115,7 @@ export class AccelerationFeesGraphComponent implements OnInit, OnChanges, OnDest
       share(),
     );
 
-    this.aggregatedHistory$.subscribe();
+    this.aggregatedHistorySubscription = this.aggregatedHistory$.subscribe();
   }
 
   ngOnChanges(changes: SimpleChanges): void {
@@ -335,8 +337,8 @@ export class AccelerationFeesGraphComponent implements OnInit, OnChanges, OnDest
   }
 
   ngOnDestroy(): void {
-    if (this.statsSubscription) {
-      this.statsSubscription.unsubscribe();
-    }
+    this.aggregatedHistorySubscription?.unsubscribe();
+    this.fragmentSubscription?.unsubscribe();
+    this.statsSubscription?.unsubscribe();
   }
 }

frontend/src/app/components/block-overview-graph/block-overview-graph.component.ts

@@ -172,13 +172,19 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
   ngOnDestroy(): void {
     if (this.animationFrameRequest) {
       cancelAnimationFrame(this.animationFrameRequest);
-      clearTimeout(this.animationHeartBeat);
     }
+    clearTimeout(this.animationHeartBeat);
     if (this.canvas) {
       this.canvas.nativeElement.removeEventListener('webglcontextlost', this.handleContextLost);
       this.canvas.nativeElement.removeEventListener('webglcontextrestored', this.handleContextRestored);
-      this.themeChangedSubscription?.unsubscribe();
     }
+    if (this.scene) {
+      this.scene.destroy();
+    }
+    this.vertexArray.destroy();
+    this.vertexArray = null;
+    this.themeChangedSubscription?.unsubscribe();
+    this.searchSubscription?.unsubscribe();
   }
 
   clear(direction): void {
@@ -447,7 +453,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
     }
     this.applyQueuedUpdates();
     // skip re-render if there's no change to the scene
-    if (this.scene && this.gl) {
+    if (this.scene && this.gl && this.vertexArray) {
       /* SET UP SHADER UNIFORMS */
       // screen dimensions
       this.gl.uniform2f(this.gl.getUniformLocation(this.shaderProgram, 'screenSize'), this.displayWidth, this.displayHeight);
@@ -489,9 +495,7 @@ export class BlockOverviewGraphComponent implements AfterViewInit, OnDestroy, On
     if (this.running && this.scene && now <= (this.scene.animateUntil + 500)) {
       this.doRun();
     } else {
-      if (this.animationHeartBeat) {
-        clearTimeout(this.animationHeartBeat);
-      }
+      clearTimeout(this.animationHeartBeat);
       this.animationHeartBeat = window.setTimeout(() => {
         this.start();
       }, 1000);

frontend/src/app/components/block-overview-graph/fast-vertex-array.ts

@@ -19,6 +19,7 @@ export class FastVertexArray {
   freeSlots: number[];
   lastSlot: number;
   dirty = false;
+  destroyed = false;
 
   constructor(length, stride) {
     this.length = length;
@@ -32,6 +33,9 @@ export class FastVertexArray {
   }
 
   insert(sprite: TxSprite): number {
+    if (this.destroyed) {
+      return;
+    }
     this.count++;
 
     let position;
@@ -45,11 +49,14 @@ export class FastVertexArray {
       }
     }
     this.sprites[position] = sprite;
-    return position;
     this.dirty = true;
+    return position;
   }
 
   remove(index: number): void {
+    if (this.destroyed) {
+      return;
+    }
     this.count--;
     this.clearData(index);
     this.freeSlots.push(index);
@@ -61,20 +68,26 @@ export class FastVertexArray {
   }
 
   setData(index: number, dataChunk: number[]): void {
+    if (this.destroyed) {
+      return;
+    }
     this.data.set(dataChunk, (index * this.stride));
     this.dirty = true;
   }
 
-  clearData(index: number): void {
+  private clearData(index: number): void {
     this.data.fill(0, (index * this.stride), ((index + 1) * this.stride));
     this.dirty = true;
   }
 
   getData(index: number): Float32Array {
+    if (this.destroyed) {
+      return;
+    }
     return this.data.subarray(index, this.stride);
   }
 
-  expand(): void {
+  private expand(): void {
     this.length *= 2;
     const newData = new Float32Array(this.length * this.stride);
     newData.set(this.data);
@@ -82,7 +95,7 @@ export class FastVertexArray {
     this.dirty = true;
   }
 
-  compact(): void {
+  private compact(): void {
     // New array length is the smallest power of 2 larger than the sprite count (but no smaller than 512)
     const newLength = Math.max(512, Math.pow(2, Math.ceil(Math.log2(this.count))));
     if (newLength !== this.length) {
@@ -110,4 +123,13 @@ export class FastVertexArray {
   getVertexData(): Float32Array {
     return this.data;
   }
+
+  destroy(): void {
+    this.data = null;
+    this.sprites = null;
+    this.freeSlots = null;
+    this.lastSlot = 0;
+    this.dirty = false;
+    this.destroyed = true;
+  }
 }

frontend/src/app/components/block-view/block-view.component.ts

@@ -116,7 +116,7 @@ export class BlockViewComponent implements OnInit, OnDestroy {
         this.isLoadingBlock = false;
         this.isLoadingOverview = true;
       }),
-      shareReplay(1)
+      shareReplay({ bufferSize: 1, refCount: true })
     );
 
     this.overviewSubscription = block$.pipe(
@@ -176,5 +176,8 @@ export class BlockViewComponent implements OnInit, OnDestroy {
     if (this.queryParamsSubscription) {
       this.queryParamsSubscription.unsubscribe();
     }
+    if (this.blockGraph) {
+      this.blockGraph.destroy();
+    }
   }
 }

frontend/src/app/components/block/block-preview.component.ts

@@ -117,7 +117,7 @@ export class BlockPreviewComponent implements OnInit, OnDestroy {
         this.openGraphService.waitOver('block-data-' + this.rawId);
       }),
       throttleTime(50, asyncScheduler, { leading: true, trailing: true }),
-      shareReplay(1)
+      shareReplay({ bufferSize: 1, refCount: true })
     );
 
     this.overviewSubscription = block$.pipe(

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

@@ -1,8 +1,8 @@
 import { Component, OnInit, OnDestroy, ViewChildren, QueryList, ChangeDetectorRef } from '@angular/core';
 import { Location } from '@angular/common';
-import { ActivatedRoute, ParamMap, Router } from '@angular/router';
+import { ActivatedRoute, ParamMap, Params, Router } from '@angular/router';
 import { ElectrsApiService } from '@app/services/electrs-api.service';
-import { switchMap, tap, throttleTime, catchError, map, shareReplay, startWith, filter } from 'rxjs/operators';
+import { switchMap, tap, throttleTime, catchError, map, shareReplay, startWith, filter, take } from 'rxjs/operators';
 import { Observable, of, Subscription, asyncScheduler, EMPTY, combineLatest, forkJoin } from 'rxjs';
 import { StateService } from '@app/services/state.service';
 import { SeoService } from '@app/services/seo.service';
@@ -68,6 +68,7 @@ export class BlockComponent implements OnInit, OnDestroy {
   paginationMaxSize = window.matchMedia('(max-width: 670px)').matches ? 3 : 5;
   numUnexpected: number = 0;
   mode: 'projected' | 'actual' = 'projected';
+  currentQueryParams: Params;
 
   overviewSubscription: Subscription;
   accelerationsSubscription: Subscription;
@@ -80,8 +81,8 @@ export class BlockComponent implements OnInit, OnDestroy {
   timeLtr: boolean;
   childChangeSubscription: Subscription;
   auditPrefSubscription: Subscription;
+  isAuditEnabledSubscription: Subscription;
   oobSubscription: Subscription;
-  
   priceSubscription: Subscription;
   blockConversion: Price;
 
@@ -118,7 +119,7 @@ export class BlockComponent implements OnInit, OnDestroy {
     this.setAuditAvailable(this.auditSupported);
 
     if (this.auditSupported) {
-      this.isAuditEnabledFromParam().subscribe(auditParam => {
+      this.isAuditEnabledSubscription = this.isAuditEnabledFromParam().subscribe(auditParam => {
         if (this.auditParamEnabled) {
           this.auditModeEnabled = auditParam;
         } else {
@@ -281,7 +282,7 @@ export class BlockComponent implements OnInit, OnDestroy {
         }
       }),
       throttleTime(300, asyncScheduler, { leading: true, trailing: true }),
-      shareReplay(1)
+      shareReplay({ bufferSize: 1, refCount: true })
     );
 
     this.overviewSubscription = this.block$.pipe(
@@ -363,6 +364,7 @@ export class BlockComponent implements OnInit, OnDestroy {
       .subscribe((network) => this.network = network);
 
     this.queryParamsSubscription = this.route.queryParams.subscribe((params) => {
+      this.currentQueryParams = params;
       if (params.showDetails === 'true') {
         this.showDetails = true;
       } else {
@@ -414,6 +416,7 @@ export class BlockComponent implements OnInit, OnDestroy {
   ngOnDestroy(): void {
     this.stateService.markBlock$.next({});
     this.overviewSubscription?.unsubscribe();
+    this.accelerationsSubscription?.unsubscribe();
     this.keyNavigationSubscription?.unsubscribe();
     this.blocksSubscription?.unsubscribe();
     this.cacheBlocksSubscription?.unsubscribe();
@@ -421,8 +424,16 @@ export class BlockComponent implements OnInit, OnDestroy {
     this.queryParamsSubscription?.unsubscribe();
     this.timeLtrSubscription?.unsubscribe();
     this.childChangeSubscription?.unsubscribe();
-    this.priceSubscription?.unsubscribe();
+    this.auditPrefSubscription?.unsubscribe();
+    this.isAuditEnabledSubscription?.unsubscribe();
     this.oobSubscription?.unsubscribe();
+    this.priceSubscription?.unsubscribe();
+    this.blockGraphProjected.forEach(graph => {
+      graph.destroy();
+    });
+    this.blockGraphActual.forEach(graph => {
+      graph.destroy();
+    });
   }
 
   // TODO - Refactor this.fees/this.reward for liquid because it is not
@@ -733,19 +744,18 @@ export class BlockComponent implements OnInit, OnDestroy {
   toggleAuditMode(): void {
     this.stateService.hideAudit.next(this.auditModeEnabled);
 
-    this.route.queryParams.subscribe(params => {
-      const queryParams = { ...params };
-      delete queryParams['audit'];
+    const queryParams = { ...this.currentQueryParams };
+    delete queryParams['audit'];
 
-      let newUrl = this.router.url.split('?')[0];
-      const queryString = new URLSearchParams(queryParams).toString();
-      if (queryString) {
-        newUrl += '?' + queryString;
-      }
-  
-      this.location.replaceState(newUrl);
-    });
+    let newUrl = this.router.url.split('?')[0];
+    const queryString = new URLSearchParams(queryParams).toString();
+    if (queryString) {
+      newUrl += '?' + queryString;
+    }
+    this.location.replaceState(newUrl);
 
+    // avoid duplicate subscriptions
+    this.auditPrefSubscription?.unsubscribe();
     this.auditPrefSubscription = this.stateService.hideAudit.subscribe((hide) => {
       this.auditModeEnabled = !hide;
       this.showAudit = this.auditAvailable && this.auditModeEnabled;

frontend/src/app/components/eight-blocks/eight-blocks.component.ts

@@ -162,6 +162,9 @@ export class EightBlocksComponent implements OnInit, OnDestroy {
     this.cacheBlocksSubscription?.unsubscribe();
     this.networkChangedSubscription?.unsubscribe();
     this.queryParamsSubscription?.unsubscribe();
+    this.blockGraphs.forEach(graph => {
+      graph.destroy();
+    });
   }
 
   shiftTestBlocks(): void {

frontend/src/app/components/mempool-block-overview/mempool-block-overview.component.ts

@@ -120,6 +120,7 @@ export class MempoolBlockOverviewComponent implements OnInit, OnDestroy, OnChang
   }
 
   ngOnDestroy(): void {
+    this.blockGraph?.destroy();
     this.blockSub.unsubscribe();
     this.timeLtrSubscription.unsubscribe();
     this.websocketService.stopTrackMempoolBlock();