Store and display stats and node top lists

frontend/mempool-frontend-config.sample.json

@@ -16,5 +16,6 @@
   "MEMPOOL_WEBSITE_URL": "https://mempool.space",
   "LIQUID_WEBSITE_URL": "https://liquid.network",
   "BISQ_WEBSITE_URL": "https://bisq.markets",
-  "MINING_DASHBOARD": true
+  "MINING_DASHBOARD": true,
+  "LIGHTNING": false
 }

frontend/proxy.conf.local.js

@@ -102,6 +102,16 @@ if (configContent && configContent.BASE_MODULE === 'bisq') {
 }
 
 PROXY_CONFIG.push(...[
+  {
+    context: ['/lightning/api/v1/**'],
+    target: `http://localhost:8899`,
+    secure: false,
+    changeOrigin: true,
+    proxyTimeout: 30000,
+    pathRewrite: {
+        "^/lightning/api": "/api"
+    },
+  },
   {
     context: ['/api/v1/**'],
     target: `http://localhost:8999`,

frontend/src/app/app-routing.module.ts

@@ -20,6 +20,7 @@ import { AssetsFeaturedComponent } from './components/assets/assets-featured/ass
 import { AssetsComponent } from './components/assets/assets.component';
 import { AssetComponent } from './components/asset/asset.component';
 import { AssetsNavComponent } from './components/assets/assets-nav/assets-nav.component';
+import { LightningDashboardComponent } from './lightning/lightning-dashboard/lightning-dashboard.component';
 
 let routes: Routes = [
   { 
@@ -96,6 +97,11 @@ let routes: Routes = [
             path: 'api',
             loadChildren: () => import('./docs/docs.module').then(m => m.DocsModule)
           },
+          {
+            path: 'lightning',
+            component: LightningDashboardComponent,
+            loadChildren: () => import('./lightning/lightning.module').then(m => m.LightningModule)
+          },
         ],
       },
       {
@@ -186,6 +192,11 @@ let routes: Routes = [
             path: 'api',
             loadChildren: () => import('./docs/docs.module').then(m => m.DocsModule)
           },
+          {
+            path: 'lightning',
+            component: LightningDashboardComponent,
+            loadChildren: () => import('./lightning/lightning.module').then(m => m.LightningModule)
+          },
         ],
       },
       {
@@ -273,6 +284,11 @@ let routes: Routes = [
         path: 'api',
         loadChildren: () => import('./docs/docs.module').then(m => m.DocsModule)
       },
+      {
+        path: 'lightning',
+        component: LightningDashboardComponent,
+        loadChildren: () => import('./lightning/lightning.module').then(m => m.LightningModule)
+      },
     ],
   },
   {

frontend/src/app/components/change/change.component.html

@@ -0,0 +1,3 @@
+<span [style]="change >= 0 ? 'color: #42B747' : 'color: #B74242'">
+  {{ change >= 0 ? '+' : '' }}{{ change | amountShortener }}%
+</span>

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

@@ -0,0 +1,21 @@
+import { ChangeDetectionStrategy, Component, Input, OnChanges } from '@angular/core';
+
+@Component({
+  selector: 'app-change',
+  templateUrl: './change.component.html',
+  styleUrls: ['./change.component.scss'],
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class ChangeComponent implements OnChanges {
+  @Input() current: number;
+  @Input() previous: number;
+
+  change: number;
+
+  constructor() { }
+
+  ngOnChanges(): void {
+    this.change = (this.current - this.previous) / this.previous * 100;
+  }
+
+}

frontend/src/app/components/master-page/master-page.component.html

@@ -35,15 +35,15 @@
       <li class="nav-item" routerLinkActive="active" [routerLinkActiveOptions]="{exact: true}" id="btn-pools" *ngIf="stateService.env.MINING_DASHBOARD">
         <a class="nav-link" [routerLink]="['/mining' | relativeUrl]" (click)="collapse()"><fa-icon [icon]="['fas', 'hammer']" [fixedWidth]="true" i18n-title="mining.mining-dashboard" title="Mining Dashboard"></fa-icon></a>
       </li>
+      <li class="nav-item" routerLinkActive="active" [routerLinkActiveOptions]="{exact: true}" id="btn-pools" *ngIf="stateService.env.LIGHTNING">
+        <a class="nav-link" [routerLink]="['/lightning' | relativeUrl]" (click)="collapse()"><fa-icon [icon]="['fas', 'bolt']" [fixedWidth]="true" i18n-title="master-page.lightning" title="Lightning Explorer"></fa-icon></a>
+      </li>
       <li class="nav-item" routerLinkActive="active" id="btn-blocks" *ngIf="!stateService.env.MINING_DASHBOARD">
         <a class="nav-link" [routerLink]="['/blocks' | relativeUrl]" (click)="collapse()"><fa-icon [icon]="['fas', 'cubes']" [fixedWidth]="true" i18n-title="master-page.blocks" title="Blocks"></fa-icon></a>
       </li>
       <li class="nav-item" routerLinkActive="active" id="btn-graphs">
         <a class="nav-link" [routerLink]="['/graphs' | relativeUrl]" (click)="collapse()"><fa-icon [icon]="['fas', 'chart-area']" [fixedWidth]="true" i18n-title="master-page.graphs" title="Graphs"></fa-icon></a>
       </li>
-      <li class="nav-item d-none d-lg-block" routerLinkActive="active" id="btn-tv">
-        <a class="nav-link" [routerLink]="['/tv' | relativeUrl]" (click)="collapse()"><fa-icon [icon]="['fas', 'tv']" [fixedWidth]="true" i18n-title="master-page.tvview" title="TV view"></fa-icon></a>
-      </li>
       <li class="nav-item" routerLinkActive="active" id="btn-docs">
         <a class="nav-link" [routerLink]="['/docs' | relativeUrl ]" (click)="collapse()"><fa-icon [icon]="['fas', 'book']" [fixedWidth]="true" i18n-title="documentation.title" title="Documentation"></fa-icon></a>
       </li>

frontend/src/app/lightning/lightning-api.service.ts

@@ -0,0 +1,22 @@
+import { Injectable } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { Observable } from 'rxjs';
+
+const API_BASE_URL = '/lightning/api/v1';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class LightningApiService {
+  constructor(
+    private httpClient: HttpClient,
+  ) { }
+
+  getLatestStatistics$(): Observable<any> {
+    return this.httpClient.get<any>(API_BASE_URL + '/statistics/latest');
+  }
+
+  listTopNodes$(): Observable<any> {
+    return this.httpClient.get<any>(API_BASE_URL + '/nodes/top');
+  }
+}

frontend/src/app/lightning/lightning-dashboard/lightning-dashboard.component.html

@@ -0,0 +1,48 @@
+<div class="container-xl dashboard-container">
+
+  <div class="row row-cols-1 row-cols-md-2">
+
+    <div class="col">
+      <div class="main-title">
+        <span i18n="lightning.statistics-title">Nodes Statistics</span>&nbsp;
+      </div>
+      <div class="card-wrapper">
+        <div class="card" style="height: 123px">
+          <div class="card-body more-padding">
+            <app-node-statistics [statistics$]="statistics$"></app-node-statistics>
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <div class="col">
+      <div class="main-title">
+        <span i18n="lightning.statistics-title">Channels Statistics</span>&nbsp;
+      </div>
+      <div class="card-wrapper">
+        
+      </div>
+    </div>
+
+    <div class="col">
+      <div class="card">
+        <div class="card-body">
+          <h5 class="card-title">Top Capacity Nodes</h5>
+          <app-nodes-list [nodes$]="nodesByCapacity$"></app-nodes-list>
+          <div><a [routerLink]="['/lightning/nodes' | relativeUrl]" i18n="dashboard.view-more">View more &raquo;</a></div>
+        </div>
+      </div>
+    </div>
+
+    <div class="col">
+      <div class="card">
+        <div class="card-body">
+          <h5 class="card-title">Most Connected Nodes</h5>
+          <app-nodes-list [nodes$]="nodesByChannels$"></app-nodes-list>
+          <div><a [routerLink]="['/lightning/nodes' | relativeUrl]" i18n="dashboard.view-more">View more &raquo;</a></div>
+        </div>
+      </div>
+    </div>
+
+  </div>
+</div>

frontend/src/app/lightning/lightning-dashboard/lightning-dashboard.component.scss

@@ -0,0 +1,80 @@
+.dashboard-container {
+  padding-bottom: 60px;
+  text-align: center;
+  margin-top: 0.5rem;
+  @media (min-width: 992px) {
+    padding-bottom: 0px;
+  }
+  .col {
+    margin-bottom: 1.5rem;
+  }
+}
+
+.card {
+  background-color: #1d1f31;
+}
+
+.card-title {
+  font-size: 1rem;
+  color: #4a68b9;
+}
+.card-title > a {
+  color: #4a68b9;
+}
+
+.card-body {
+  padding: 1.25rem 1rem 0.75rem 1rem;
+}
+.card-body.pool-ranking {
+  padding: 1.25rem 0.25rem 0.75rem 0.25rem;
+}
+.card-text {
+  font-size: 22px;
+}
+
+
+.main-title {
+  position: relative;
+  color: #ffffff91;
+  margin-top: -13px;
+  font-size: 10px;
+  text-transform: uppercase;
+  font-weight: 500;
+  text-align: center;
+  padding-bottom: 3px;
+}
+
+.more-padding {
+  padding: 18px;
+}
+
+.card-wrapper {
+  .card {
+    height: auto !important;
+  }
+  .card-body {
+    display: flex;
+    flex: inherit;
+    text-align: center;
+    flex-direction: column;
+    justify-content: space-around;
+    padding: 22px 20px;
+  }
+}
+
+.skeleton-loader {
+  width: 100%;
+  display: block;
+  &:first-child {
+    max-width: 90px;
+    margin: 15px auto 3px;
+  }
+  &:last-child {
+    margin: 10px auto 3px;
+    max-width: 55px;
+  }
+}
+
+.card-text {
+  font-size: 22px;
+}

frontend/src/app/lightning/lightning-dashboard/lightning-dashboard.component.ts

@@ -0,0 +1,37 @@
+import { ChangeDetectionStrategy, Component, OnInit } from '@angular/core';
+import { Observable } from 'rxjs';
+import { map, share } from 'rxjs/operators';
+import { LightningApiService } from '../lightning-api.service';
+
+@Component({
+  selector: 'app-lightning-dashboard',
+  templateUrl: './lightning-dashboard.component.html',
+  styleUrls: ['./lightning-dashboard.component.scss'],
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class LightningDashboardComponent implements OnInit {
+  nodesByCapacity$: Observable<any>;
+  nodesByChannels$: Observable<any>;
+  statistics$: Observable<any>;
+
+  constructor(
+    private lightningApiService: LightningApiService,
+  ) { }
+
+  ngOnInit(): void {
+    const sharedObservable = this.lightningApiService.listTopNodes$().pipe(share());
+
+    this.nodesByCapacity$ = sharedObservable
+      .pipe(
+        map((object) => object.topByCapacity),
+      );
+
+    this.nodesByChannels$ = sharedObservable
+      .pipe(
+        map((object) => object.topByChannels),
+      );
+
+    this.statistics$ = this.lightningApiService.getLatestStatistics$();
+  }
+
+}

frontend/src/app/lightning/lightning.module.ts

@@ -0,0 +1,24 @@
+import { NgModule } from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { SharedModule } from '../shared/shared.module';
+import { LightningDashboardComponent } from './lightning-dashboard/lightning-dashboard.component';
+import { LightningApiService } from './lightning-api.service';
+import { NodesListComponent } from './nodes-list/nodes-list.component';
+import { RouterModule } from '@angular/router';
+import { NodeStatisticsComponent } from './node-statistics/node-statistics.component';
+@NgModule({
+  declarations: [
+    LightningDashboardComponent,
+    NodesListComponent,
+    NodeStatisticsComponent,
+  ],
+  imports: [
+    CommonModule,
+    SharedModule,
+    RouterModule,
+  ],
+  providers: [
+    LightningApiService,
+  ]
+})
+export class LightningModule { }

frontend/src/app/lightning/node-statistics/node-statistics.component.html

@@ -0,0 +1,64 @@
+<div class="fee-estimation-wrapper" *ngIf="statistics$ | async as statistics; else loadingReward">
+  <div class="fee-estimation-container">
+    <div class="item">
+      <h5 class="card-title" i18n="mining.rewards">Nodes</h5>
+      <div class="card-text" i18n-ngbTooltip="mining.rewards-desc"
+        ngbTooltip="Amount being paid to miners in the past 144 blocks" placement="bottom">
+        <div class="fee-text">
+          {{ statistics.latest.node_count | number }}
+        </div>
+        <span class="fiat">
+          <app-change [current]="statistics.latest.node_count" [previous]="statistics.previous.node_count"></app-change>
+        </span>
+      </div>
+    </div>
+    <div class="item">
+      <h5 class="card-title" i18n="mining.rewards-per-tx">Channels</h5>
+      <div class="card-text" i18n-ngbTooltip="mining.rewards-per-tx-desc"
+        ngbTooltip="Average miners' reward per transaction in the past 144 blocks" placement="bottom">
+        <div class="fee-text">
+          {{ statistics.latest.channel_count | number }}
+        </div>
+        <span class="fiat">
+          <app-change [current]="statistics.latest.channel_count" [previous]="statistics.previous.channel_count"></app-change>
+        </span>
+      </div>
+    </div>
+    <div class="item">
+      <h5 class="card-title" i18n="mining.average-fee">Average Channel</h5>
+      <div class="card-text" i18n-ngbTooltip="mining.average-fee"
+        ngbTooltip="Fee paid on average for each transaction in the past 144 blocks" placement="bottom">
+        <app-amount [satoshis]="statistics.latest.average_channel_size" digitsInfo="1.2-3"></app-amount>
+        <span class="fiat">
+          <app-change [current]="statistics.latest.average_channel_size" [previous]="statistics.previous.average_channel_size"></app-change>
+        </span>
+      </div>
+    </div>
+  </div>
+</div>
+
+<ng-template #loadingReward>
+  <div class="fee-estimation-container loading-container">
+    <div class="item">
+      <h5 class="card-title" i18n="mining.rewards">Nodes</h5>
+      <div class="card-text">
+        <div class="skeleton-loader"></div>
+        <div class="skeleton-loader"></div>
+      </div>
+    </div>
+    <div class="item">
+      <h5 class="card-title" i18n="mining.rewards-per-tx">Channels</h5>
+      <div class="card-text">
+        <div class="skeleton-loader"></div>
+        <div class="skeleton-loader"></div>
+      </div>
+    </div>
+    <div class="item">
+      <h5 class="card-title" i18n="mining.average-fee">Average Channel</h5>
+      <div class="card-text">
+        <div class="skeleton-loader"></div>
+        <div class="skeleton-loader"></div>
+      </div>
+    </div>
+  </div>
+</ng-template>

frontend/src/app/lightning/node-statistics/node-statistics.component.scss

@@ -0,0 +1,85 @@
+.card-title {
+  color: #4a68b9;
+  font-size: 10px;
+  margin-bottom: 4px;  
+  font-size: 1rem;
+}
+
+.card-text {
+  font-size: 22px;
+  span {
+    font-size: 11px;
+    position: relative;
+    top: -2px;
+    display: inline-flex;
+  }
+  .green-color {
+    display: block;
+  }
+}
+
+.fee-estimation-container {
+  display: flex;
+  justify-content: space-between;
+  @media (min-width: 376px) {
+    flex-direction: row;
+  }  
+  .item {
+    max-width: 150px;
+    margin: 0;
+    width: -webkit-fill-available;
+    @media (min-width: 376px) {
+      margin: 0 auto 0px;
+    }    
+    &:first-child{
+      display: none;
+      @media (min-width: 485px) {
+        display: block;
+      }    
+      @media (min-width: 768px) {
+        display: none;
+      }    
+      @media (min-width: 992px) {
+        display: block;
+      }    
+    }
+    &:last-child {
+      margin-bottom: 0;
+    }
+    .card-text span {
+      color: #ffffff66;
+      font-size: 12px;
+      top: 0px;
+    }
+    .fee-text{
+      border-bottom: 1px solid #ffffff1c;
+      width: fit-content;
+      margin: auto;
+      line-height: 1.45;
+      padding: 0px 2px;
+    }
+    .fiat {
+      display: block;
+      font-size: 14px !important;
+    }
+  }
+}
+
+.loading-container {
+  min-height: 76px;
+}
+
+.card-text {
+  .skeleton-loader {
+    width: 100%;
+    display: block;
+    &:first-child {
+      max-width: 90px;
+      margin: 15px auto 3px;
+    }
+    &:last-child {
+      margin: 10px auto 3px;
+      max-width: 55px;
+    }
+  }
+}

frontend/src/app/lightning/node-statistics/node-statistics.component.ts

@@ -0,0 +1,18 @@
+import { ChangeDetectionStrategy, Component, Input, OnInit } from '@angular/core';
+import { Observable } from 'rxjs';
+
+@Component({
+  selector: 'app-node-statistics',
+  templateUrl: './node-statistics.component.html',
+  styleUrls: ['./node-statistics.component.scss'],
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class NodeStatisticsComponent implements OnInit {
+  @Input() statistics$: Observable<any>;
+
+  constructor() { }
+
+  ngOnInit(): void {
+  }
+
+}

frontend/src/app/lightning/nodes-list/nodes-list.component.html

@@ -0,0 +1,39 @@
+<div style="min-height: 295px">
+
+  <table class="table table-borderless">
+    <thead>
+      <th class="alias text-left" i18n="nodes.alias">Alias</th>
+      <th class="capacity text-right" i18n="node.capacity">Capacity</th>
+      <th class="channels text-right" i18n="node.channels">Channels</th>
+    </thead>
+    <tbody *ngIf="nodes$ | async as nodes; else skeleton">
+      <tr *ngFor="let node of nodes; let i = index;">
+        <td class="alias text-left">
+          <a [routerLink]="['/lightning/nodes/:public_key' | relativeUrl, node.public]">{{ node.alias }}</a>
+        </td>
+        <td class="capacity text-right">
+          <app-amount [satoshis]="node.capacity_left + node.capacity_right" digitsInfo="1.2-2"></app-amount>
+        </td>
+        <td class="channels text-right">
+          {{ node.channels_left + node.channels_right | number }}
+        </td>
+      </tr>
+    </tbody>
+    <ng-template #skeleton>
+      <tbody>
+        <tr *ngFor="let item of [1,2,3,4,5,6,7,8,9,10]">
+          <td class="alias text-left">
+            <span class="skeleton-loader"></span>
+          </td>
+          <td class="capacity text-right">
+            <span class="skeleton-loader"></span>
+          </td>
+          <td class="channels text-right">
+            <span class="skeleton-loader"></span>
+          </td>
+        </tr>
+      </tbody>
+    </ng-template>
+  </table>
+
+</div>

frontend/src/app/lightning/nodes-list/nodes-list.component.ts

@@ -0,0 +1,18 @@
+import { ChangeDetectionStrategy, Component, Input, OnInit } from '@angular/core';
+import { Observable } from 'rxjs';
+
+@Component({
+  selector: 'app-nodes-list',
+  templateUrl: './nodes-list.component.html',
+  styleUrls: ['./nodes-list.component.scss'],
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class NodesListComponent implements OnInit {
+  @Input() nodes$: Observable<any>;
+
+  constructor() { }
+
+  ngOnInit(): void {
+  }
+
+}

frontend/src/app/services/state.service.ts

@@ -37,6 +37,7 @@ export interface Env {
   LIQUID_WEBSITE_URL: string;
   BISQ_WEBSITE_URL: string;
   MINING_DASHBOARD: boolean;
+  LIGHTNING: boolean;
 }
 
 const defaultEnv: Env = {
@@ -60,7 +61,8 @@ const defaultEnv: Env = {
   'MEMPOOL_WEBSITE_URL': 'https://mempool.space',
   'LIQUID_WEBSITE_URL': 'https://liquid.network',
   'BISQ_WEBSITE_URL': 'https://bisq.markets',
-  'MINING_DASHBOARD': true
+  'MINING_DASHBOARD': true,
+  'LIGHTNING': false,
 };
 
 @Injectable({

frontend/src/app/shared/shared.module.ts

@@ -40,7 +40,6 @@ import { BlockchainBlocksComponent } from '../components/blockchain-blocks/block
 import { AmountComponent } from '../components/amount/amount.component';
 import { RouterModule } from '@angular/router';
 import { CapAddressPipe } from './pipes/cap-address-pipe/cap-address-pipe';
-
 import { StartComponent } from '../components/start/start.component';
 import { TransactionComponent } from '../components/transaction/transaction.component';
 import { TransactionsListComponent } from '../components/transactions-list/transactions-list.component';
@@ -74,6 +73,7 @@ import { DataCyDirective } from '../data-cy.directive';
 import { LoadingIndicatorComponent } from '../components/loading-indicator/loading-indicator.component';
 import { IndexingProgressComponent } from '../components/indexing-progress/indexing-progress.component';
 import { SvgImagesComponent } from '../components/svg-images/svg-images.component';
+import { ChangeComponent } from '../components/change/change.component';
 
 @NgModule({
   declarations: [
@@ -104,7 +104,6 @@ import { SvgImagesComponent } from '../components/svg-images/svg-images.componen
     MempoolBlocksComponent,
     BlockchainBlocksComponent,
     AmountComponent,
-
     AboutComponent,
     MasterPageComponent,
     BisqMasterPageComponent,
@@ -142,6 +141,7 @@ import { SvgImagesComponent } from '../components/svg-images/svg-images.componen
     LoadingIndicatorComponent,
     IndexingProgressComponent,
     SvgImagesComponent,
+    ChangeComponent,
   ],
   imports: [
     CommonModule,
@@ -163,6 +163,7 @@ import { SvgImagesComponent } from '../components/svg-images/svg-images.componen
     NoSanitizePipe,
     ShortenStringPipe,
     CapAddressPipe,
+    AmountShortenerPipe,
   ],
   exports: [
     RouterModule,
@@ -203,7 +204,6 @@ import { SvgImagesComponent } from '../components/svg-images/svg-images.componen
     MempoolBlocksComponent,
     BlockchainBlocksComponent,
     AmountComponent,
-
     StartComponent,
     TransactionComponent,
     BlockComponent,
@@ -237,6 +237,7 @@ import { SvgImagesComponent } from '../components/svg-images/svg-images.componen
     LoadingIndicatorComponent,
     IndexingProgressComponent,
     SvgImagesComponent,
+    ChangeComponent,
   ]
 })
 export class SharedModule {

lightning-backend/mempool-config.sample.json

@@ -2,7 +2,8 @@
   "MEMPOOL": {
     "NETWORK": "mainnet",
     "BACKEND": "lnd",
-    "HTTP_PORT": 8999,
+    "HTTP_PORT": 8899,
+    "API_URL_PREFIX": "/api/v1/",
     "STDOUT_LOG_MIN_PRIORITY": "debug"
   },
   "SYSLOG": {

lightning-backend/src/api/lightning/lightning-api-factory.ts

@@ -1,4 +1,4 @@
-import config from '../config';
+import config from '../../config';
 import { AbstractLightningApi } from './lightning-api-abstract-factory';
 import LndApi from './lnd/lnd-api';
 

lightning-backend/src/api/lightning/lnd/lnd-api.ts

@@ -2,8 +2,8 @@ import { AbstractLightningApi } from '../lightning-api-abstract-factory';
 import { ILightningApi } from '../lightning-api.interface';
 import * as fs from 'fs';
 import * as lnService from 'ln-service';
-import config from '../../config';
+import config from '../../../config';
-import logger from '../../logger';
+import logger from '../../../logger';
 
 class LndApi implements AbstractLightningApi {
   private lnd: any;

lightning-backend/src/api/nodes/nodes.api.ts

@@ -0,0 +1,42 @@
+import logger from '../../logger';
+import DB from '../../database';
+
+class NodesApi {
+  public async $getTopCapacityNodes(): Promise<any> {
+    try {
+      const query = `SELECT nodes.*, nodes_stats.capacity_left, nodes_stats.capacity_right, nodes_stats.channels_left, nodes_stats.channels_right FROM nodes LEFT JOIN nodes_stats ON nodes_stats.public_key = nodes.public_key ORDER BY nodes_stats.capacity_left + nodes_stats.capacity_right DESC LIMIT 10`;
+      const [rows]: any = await DB.query(query);
+      return rows;
+    } catch (e) {
+      logger.err('$getTopCapacityNodes error: ' + (e instanceof Error ? e.message : e));
+      throw e;
+    }
+  }
+
+  public async $getTopChannelsNodes(): Promise<any> {
+    try {
+      const query = `SELECT nodes.*, nodes_stats.capacity_left, nodes_stats.capacity_right, nodes_stats.channels_left, nodes_stats.channels_right FROM nodes LEFT JOIN nodes_stats ON nodes_stats.public_key = nodes.public_key ORDER BY nodes_stats.channels_left + nodes_stats.channels_right DESC LIMIT 10`;
+      const [rows]: any = await DB.query(query);
+      return rows;
+    } catch (e) {
+      logger.err('$getTopChannelsNodes error: ' + (e instanceof Error ? e.message : e));
+      throw e;
+    }
+  }
+
+  public async $getLatestStatistics(): Promise<any> {
+    try {
+      const [rows]: any = await DB.query(`SELECT * FROM statistics ORDER BY id DESC LIMIT 1`);
+      const [rows2]: any = await DB.query(`SELECT * FROM statistics ORDER BY id DESC LIMIT 1 OFFSET 24`);
+      return {
+        latest: rows[0],
+        previous: rows2[0],
+      };
+    } catch (e) {
+      logger.err('$getTopChannelsNodes error: ' + (e instanceof Error ? e.message : e));
+      throw e;
+    }
+  }
+}
+
+export default new NodesApi();

lightning-backend/src/api/nodes/nodes.routes.ts

@@ -0,0 +1,35 @@
+import config from '../../config';
+import { Express, Request, Response } from 'express';
+import nodesApi from './nodes.api';
+class NodesRoutes {
+  constructor(app: Express) {
+    app
+      .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/latest', this.$getGeneralStats)
+      .get(config.MEMPOOL.API_URL_PREFIX + 'nodes/top', this.$getTopNodes)
+    ;
+  }
+
+  private async $getGeneralStats(req: Request, res: Response) {
+    try {
+      const statistics = await nodesApi.$getLatestStatistics();
+      res.json(statistics);
+    } catch (e) {
+      res.status(500).send(e instanceof Error ? e.message : e);
+    }
+  }
+
+  private async $getTopNodes(req: Request, res: Response) {
+    try {
+      const topCapacityNodes = await nodesApi.$getTopCapacityNodes();
+      const topChannelsNodes = await nodesApi.$getTopChannelsNodes();
+      res.json({
+        topByCapacity: topCapacityNodes,
+        topByChannels: topChannelsNodes,
+      });
+    } catch (e) {
+      res.status(500).send(e instanceof Error ? e.message : e);
+    }
+  }
+}
+
+export default NodesRoutes;

lightning-backend/src/config.ts

@@ -5,6 +5,7 @@ interface IConfig {
     NETWORK: 'mainnet' | 'testnet' | 'signet';
     BACKEND: 'lnd' | 'cln' | 'ldk';
     HTTP_PORT: number;
+    API_URL_PREFIX: string;
     STDOUT_LOG_MIN_PRIORITY: 'emerg' | 'alert' | 'crit' | 'err' | 'warn' | 'notice' | 'info' | 'debug';
   };
   SYSLOG: {
@@ -33,6 +34,7 @@ const defaults: IConfig = {
     'NETWORK': 'mainnet',
     'BACKEND': 'lnd',
     'HTTP_PORT': 8999,
+    'API_URL_PREFIX': '/api/v1/',
     'STDOUT_LOG_MIN_PRIORITY': 'debug',
   },
   'SYSLOG': {

lightning-backend/src/database-migration.ts

@@ -76,6 +76,7 @@ class DatabaseMigration {
       await this.$executeQuery(this.getCreateStatisticsQuery(), await this.$checkIfTableExists('statistics'));
       await this.$executeQuery(this.getCreateNodesQuery(), await this.$checkIfTableExists('nodes'));
       await this.$executeQuery(this.getCreateChannelsQuery(), await this.$checkIfTableExists('channels'));
+      await this.$executeQuery(this.getCreateNodesStatsQuery(), await this.$checkIfTableExists('nodes_stats'));
     } catch (e) {
       throw e;
     }
@@ -204,27 +205,44 @@ class DatabaseMigration {
   private getCreateChannelsQuery(): string {
     return `CREATE TABLE IF NOT EXISTS channels (
       id varchar(15) NOT NULL,
-      capacity double unsigned NOT NULL,
+      capacity bigint(20) unsigned NOT NULL,
       transaction_id varchar(64) NOT NULL,
       transaction_vout int(11) NOT NULL,
-      updated_at datetime NOT NULL,
+      updated_at datetime DEFAULT NULL,
       node1_public_key varchar(66) NOT NULL,
-      node1_base_fee_mtokens double unsigned NULL,
+      node1_base_fee_mtokens bigint(20) unsigned DEFAULT NULL,
-      node1_cltv_delta int(11) NULL,
+      node1_cltv_delta int(11) DEFAULT NULL,
-      node1_fee_rate int(11) NULL,
+      node1_fee_rate bigint(11) DEFAULT NULL,
-      node1_is_disabled boolean NULL,
+      node1_is_disabled tinyint(1) DEFAULT NULL,
-      node1_max_htlc_mtokens double unsigned NULL,
+      node1_max_htlc_mtokens bigint(20) unsigned DEFAULT NULL,
-      node1_min_htlc_mtokens double unsigned NULL,
+      node1_min_htlc_mtokens bigint(20) unsigned DEFAULT NULL,
-      node1_updated_at datetime NULL,
+      node1_updated_at datetime DEFAULT NULL,
       node2_public_key varchar(66) NOT NULL,
-      node2_base_fee_mtokens double unsigned NULL,
+      node2_base_fee_mtokens bigint(20) unsigned DEFAULT NULL,
-      node2_cltv_delta int(11) NULL,
+      node2_cltv_delta int(11) DEFAULT NULL,
-      node2_fee_rate int(11) NULL,
+      node2_fee_rate bigint(11) DEFAULT NULL,
-      node2_is_disabled boolean NULL,
+      node2_is_disabled tinyint(1) DEFAULT NULL,
-      node2_max_htlc_mtokens double unsigned NULL,
+      node2_max_htlc_mtokens bigint(20) unsigned DEFAULT NULL,
-      node2_min_htlc_mtokens double unsigned NULL,
+      node2_min_htlc_mtokens bigint(20) unsigned DEFAULT NULL,
-      node2_updated_at datetime NULL,
+      node2_updated_at datetime DEFAULT NULL,
-      CONSTRAINT PRIMARY KEY (id)
+      PRIMARY KEY (id),
+      KEY node1_public_key (node1_public_key),
+      KEY node2_public_key (node2_public_key),
+      KEY node1_public_key_2 (node1_public_key,node2_public_key)
+    ) ENGINE=InnoDB DEFAULT CHARSET=utf8;`;
+  }
+
+  private getCreateNodesStatsQuery(): string {
+    return `CREATE TABLE nodes_stats (
+      id int(11) unsigned NOT NULL AUTO_INCREMENT,
+      public_key varchar(66) NOT NULL DEFAULT '',
+      added date NOT NULL,
+      capacity_left bigint(11) unsigned DEFAULT NULL,
+      capacity_right bigint(11) unsigned DEFAULT NULL,
+      channels_left int(11) unsigned DEFAULT NULL,
+      channels_right int(11) unsigned DEFAULT NULL,
+      PRIMARY KEY (id),
+      KEY public_key (public_key)
     ) ENGINE=InnoDB DEFAULT CHARSET=utf8;`;
   }
 }

lightning-backend/src/index.ts

@@ -1,13 +1,20 @@
 import config from './config';
+import * as express from 'express';
+import * as http from 'http';
 import logger from './logger';
 import DB from './database';
+import { Express, Request, Response, NextFunction } from 'express';
 import databaseMigration from './database-migration';
 import statsUpdater from './tasks/stats-updater.service';
 import nodeSyncService from './tasks/node-sync.service';
+import NodesRoutes from './api/nodes/nodes.routes';
 
 logger.notice(`Mempool Server is running on port ${config.MEMPOOL.HTTP_PORT}`);
 
 class LightningServer {
+  private server: http.Server | undefined;
+  private app: Express = express();
+
   constructor() {
     this.init();
   }
@@ -18,6 +25,27 @@ class LightningServer {
 
     statsUpdater.startService();
     nodeSyncService.startService();
+
+    this.startServer();
+  }
+
+  startServer() {
+    this.app
+      .use((req: Request, res: Response, next: NextFunction) => {
+        res.setHeader('Access-Control-Allow-Origin', '*');
+        next();
+      })
+      .use(express.urlencoded({ extended: true }))
+      .use(express.text())
+    ;
+
+    this.server = http.createServer(this.app);
+
+    this.server.listen(config.MEMPOOL.HTTP_PORT, () => {
+      logger.notice(`Mempool Lightning is running on port ${config.MEMPOOL.HTTP_PORT}`);
+    });
+
+    const nodeRoutes = new NodesRoutes(this.app);
   }
 }
 

lightning-backend/src/tasks/node-sync.service.ts

@@ -1,8 +1,8 @@
 
 import DB from '../database';
 import logger from '../logger';
-import lightningApi from '../api/lightning-api-factory';
+import lightningApi from '../api/lightning/lightning-api-factory';
-import { ILightningApi } from '../api/lightning-api.interface';
+import { ILightningApi } from '../api/lightning/lightning-api.interface';
 
 class NodeSyncService {
   constructor() {}

lightning-backend/src/tasks/stats-updater.service.ts

@@ -1,7 +1,7 @@
 
 import DB from '../database';
 import logger from '../logger';
-import lightningApi from '../api/lightning-api-factory';
+import lightningApi from '../api/lightning/lightning-api-factory';
 
 class LightningStatsUpdater {
   constructor() {}
@@ -19,12 +19,25 @@ class LightningStatsUpdater {
         this.$logLightningStats();
       }, 1000 * 60 * 60);
     }, difference);
+
+    // this.$logNodeStatsDaily();
+  }
+
+  private async $logNodeStatsDaily() {
+    const query = `SELECT nodes.public_key, COUNT(DISTINCT c1.id) AS channels_count_left, COUNT(DISTINCT c2.id) AS channels_count_right, SUM(DISTINCT c1.capacity) AS channels_capacity_left, SUM(DISTINCT c2.capacity) AS channels_capacity_right FROM nodes LEFT JOIN channels AS c1 ON c1.node1_public_key = nodes.public_key LEFT JOIN channels AS c2 ON c2.node2_public_key = nodes.public_key GROUP BY nodes.public_key`;
+    const [nodes]: any = await DB.query(query);
+
+    for (const node of nodes) {
+      await DB.query(
+        `INSERT INTO nodes_stats(public_key, added, capacity_left, capacity_right, channels_left, channels_right) VALUES (?, NOW(), ?, ?, ?, ?)`,
+        [node.public_key, node.channels_capacity_left, node.channels_capacity_right, node.channels_count_left, node.channels_count_right]);
+    }
   }
 
   private async $logLightningStats() {
+    try {
       const networkInfo = await lightningApi.$getNetworkInfo();
 
-    try {
       const query = `INSERT INTO statistics(
           added,
           channel_count,