Wait for external assets file writers to complete

backend/src/api/common.ts

@@ -77,7 +77,7 @@ export class Common {
     };
   }
 
-  static sleep(ms: number): Promise<void> {
+  static sleep$(ms: number): Promise<void> {
     return new Promise((resolve) => {
        setTimeout(() => {
          resolve();

backend/src/api/database-migration.ts

@@ -1,8 +1,7 @@
 import config from '../config';
 import DB from '../database';
 import logger from '../logger';
-
-const sleep = (ms: number) => new Promise(res => setTimeout(res, ms));
+import { Common } from './common';
 
 class DatabaseMigration {
   private static currentVersion = 17;
@@ -25,7 +24,7 @@ class DatabaseMigration {
         await this.$createMigrationStateTable();
       } catch (e) {
         logger.err('MIGRATIONS: Unable to create `state` table, aborting in 10 seconds. ' + e);
-        await sleep(10000);
+        await Common.sleep$(10000);
         process.exit(-1);
       }
       logger.debug('MIGRATIONS: `state` table initialized.');
@@ -36,7 +35,7 @@ class DatabaseMigration {
       databaseSchemaVersion = await this.$getSchemaVersionFromDatabase();
     } catch (e) {
       logger.err('MIGRATIONS: Unable to get current database migration version, aborting in 10 seconds. ' + e);
-      await sleep(10000);
+      await Common.sleep$(10000);
       process.exit(-1);
     }
 
@@ -52,7 +51,7 @@ class DatabaseMigration {
       await this.$createMissingTablesAndIndexes(databaseSchemaVersion);
     } catch (e) {
       logger.err('MIGRATIONS: Unable to create required tables, aborting in 10 seconds. ' + e);
-      await sleep(10000);
+      await Common.sleep$(10000);
       process.exit(-1);
     }
 

backend/src/api/liquid/icons.ts

@@ -1,5 +1,4 @@
 import * as fs from 'fs';
-import config from '../../config';
 import logger from '../../logger';
 
 class Icons {

backend/src/index.ts

@@ -85,16 +85,16 @@ class Server {
 
     this.setUpWebsocketHandling();
 
-    await syncAssets.syncAssets();
+    await syncAssets.syncAssets$();
     diskCache.loadMempoolCache();
 
     if (config.DATABASE.ENABLED) {
       await DB.checkDbConnection();
       try {
-        if (process.env.npm_config_reindex != undefined) { // Re-index requests
+        if (process.env.npm_config_reindex !== undefined) { // Re-index requests
           const tables = process.env.npm_config_reindex.split(',');
           logger.warn(`Indexed data for "${process.env.npm_config_reindex}" tables will be erased in 5 seconds (using '--reindex')`);
-          await Common.sleep(5000);
+          await Common.sleep$(5000);
           await databaseMigration.$truncateIndexedData(tables);
         }
         await databaseMigration.$initializeOrMigrateDatabase();

backend/src/sync-assets.ts

@@ -9,18 +9,23 @@ const PATH = './';
 class SyncAssets {
   constructor() { }
 
-  public async syncAssets() {
+  public async syncAssets$() {
     for (const url of config.MEMPOOL.EXTERNAL_ASSETS) {
-      await this.downloadFile(url);
+      try {
+        await this.downloadFile$(url);
+      } catch (e) {
+        throw new Error(`Failed to download external asset. ` + (e instanceof Error ? e.message : e));
+      }
     }
   }
 
-  private async downloadFile(url: string) {
+  private async downloadFile$(url: string) {
+    return new Promise((resolve, reject) => {
       const fileName = url.split('/').slice(-1)[0];
 
       try {
         if (config.SOCKS5PROXY.ENABLED) {
-        let socksOptions: any = {
+          const socksOptions: any = {
             agentOptions: {
               keepAlive: true,
             },
@@ -36,28 +41,37 @@ class SyncAssets {
           const agent = new SocksProxyAgent(socksOptions);
 
           logger.info(`Downloading external asset ${fileName} over the Tor network...`);
-        await axios.get(url, {
+          return axios.get(url, {
             httpAgent: agent,
             httpsAgent: agent,
             responseType: 'stream',
             timeout: 30000
           }).then(function (response) {
-          response.data.pipe(fs.createWriteStream(PATH + fileName));
+            const writer = fs.createWriteStream(PATH + fileName);
+            writer.on('finish', () => {
               logger.info(`External asset ${fileName} saved to ${PATH + fileName}`);
+              resolve(0);
+            });
+            response.data.pipe(writer);
           });
         } else {
           logger.info(`Downloading external asset ${fileName} over clearnet...`);
-        await axios.get(url, {
+          return axios.get(url, {
             responseType: 'stream',
             timeout: 30000
           }).then(function (response) {
-          response.data.pipe(fs.createWriteStream(PATH + fileName));
+            const writer = fs.createWriteStream(PATH + fileName);
+            writer.on('finish', () => {
               logger.info(`External asset ${fileName} saved to ${PATH + fileName}`);
+              resolve(0);
+            });
+            response.data.pipe(writer);
           });
         }
       } catch (e: any) {
-      throw new Error(`Failed to download external asset. ` + e);
+        reject(e);
       }
+    });
   }
 }