Limit background services by process role

src/services/notification.service.ts

@@ -14,6 +14,10 @@ export class NotificationService implements OnModuleInit {
     ) { }
 
     async onModuleInit(): Promise<void> {
+        if (process.env.MASTER !== 'true') {
+            return;
+        }
+
         await this.discordService.notifyRestarted();
     }
 

src/services/stratum-v1-jobs.service.ts

@@ -154,8 +154,10 @@ export class StratumV1JobsService {
             shareReplay({ refCount: true, bufferSize: 1 })
         )
 
+        if (process.env.API_ONLY !== 'true') {
             this.newMiningJob$.subscribe();
         }
+    }
 
     private calculateNetworkDifficulty(nBits: number) {
         const mantissa: number = nBits & 0x007fffff;       // Extract the mantissa from nBits

src/services/telegram.service.ts

@@ -18,6 +18,10 @@ export class TelegramService implements OnModuleInit {
         private readonly configService: ConfigService,
         private readonly telegramSubscriptionsService: TelegramSubscriptionsService
     ) {
+        if (process.env.MASTER !== 'true') {
+            return;
+        }
+
         const token: string | null = this.configService.get('TELEGRAM_BOT_TOKEN');
         if (token == null || token.length < 1) {
             return;
@@ -32,6 +36,9 @@ export class TelegramService implements OnModuleInit {
     }
 
     async onModuleInit(): Promise<void> {
+        if (process.env.MASTER !== 'true') {
+            return;
+        }
 
         if (this.bot == null) {
             return;