fix: Database connection lost error

packages/server/src/config/index.ts

@@ -32,7 +32,7 @@ module.exports = {
    */
   tenant: {
     db_client: process.env.TENANT_DB_CLIENT || process.env.DB_CLIENT || 'mysql',
-    db_name_prefix: process.env.TENANT_DB_NAME_PERFIX,
+    db_name_prefix: process.env.TENANT_DB_NAME_PERFIX || 'bigcapital_tenant_',
     db_host: process.env.TENANT_DB_HOST || process.env.DB_HOST,
     db_user: process.env.TENANT_DB_USER || process.env.DB_USER,
     db_password: process.env.TENANT_DB_PASSWORD || process.env.DB_PASSWORD,

packages/server/src/interfaces/Tenancy.ts

@@ -51,5 +51,4 @@ export interface ISystemService {
   cache();
   repositories();
   knex();
-  dbManager();
 }

packages/server/src/jobs/ComputeItemCost.ts

@@ -21,7 +21,7 @@ export default class ComputeItemCostJob {
 
     agenda.define(
       'compute-item-cost',
-      { priority: 'high', concurrency: 1 },
+      { priority: 'high', concurrency: 20 },
       this.handler.bind(this)
     );
     this.agenda.on('start:compute-item-cost', this.onJobStart.bind(this));

packages/server/src/jobs/OrganizationSetup.ts

@@ -8,7 +8,7 @@ export default class OrganizationSetupJob {
   constructor(agenda) {
     agenda.define(
       'organization-setup',
-      { priority: 'high', concurrency: 1 },
+      { priority: 'high', concurrency: 20 },
       this.handler
     );
   }

packages/server/src/jobs/WriteInvoicesJEntries.ts

@@ -15,7 +15,7 @@ export default class WriteInvoicesJournalEntries {
 
     agenda.define(
       eventName,
-      { priority: 'normal', concurrency: 1 },
+      { priority: 'normal', concurrency: 20 },
       this.handler.bind(this)
     );
     agenda.on(`complete:${eventName}`, this.onJobCompleted.bind(this));

packages/server/src/loaders/dbManager.ts

@@ -1,7 +0,0 @@
-import knexManager from 'knex-db-manager';
-import { systemKnexConfig, systemDbManager } from 'config/knexConfig';
-
-export default () => knexManager.databaseManagerFactory({
-  knex: systemKnexConfig,
-  dbManager: systemDbManager,
-});

packages/server/src/loaders/dependencyInjector.ts

@@ -3,7 +3,6 @@ import LoggerInstance from '@/loaders/logger';
 import agendaFactory from '@/loaders/agenda';
 import SmsClientLoader from '@/loaders/smsClient';
 import mailInstance from '@/loaders/mail';
-import dbManagerFactory from '@/loaders/dbManager';
 import i18n from '@/loaders/i18n';
 import repositoriesLoader from '@/loaders/systemRepositories';
 import Cache from '@/services/Cache';
@@ -16,7 +15,6 @@ export default ({ mongoConnection, knex }) => {
   try {
     const agendaInstance = agendaFactory({ mongoConnection });
     const smsClientInstance = SmsClientLoader(config.easySMSGateway.api_key);
-    const dbManager = dbManagerFactory(knex);
     const cacheInstance = new Cache();
 
     Container.set('logger', LoggerInstance);
@@ -24,7 +22,6 @@ export default ({ mongoConnection, knex }) => {
     Container.set('SMSClient', smsClientInstance);
     Container.set('mail', mailInstance);
   
-    Container.set('dbManager', dbManager);
     LoggerInstance.info(
       '[DI] Database manager has been injected into container.'
     );

packages/server/src/services/Tenancy/SystemService.ts

@@ -18,8 +18,4 @@ export default class HasSystemService implements SystemService {
   cache() {
     return this.container('cache');
   }
-
-  dbManager() {
-    return this.container('dbManager');
-  }
 }

packages/server/src/services/Tenancy/TenantDBManager.ts

@@ -1,18 +1,16 @@
 import { Container } from 'typedi';
-import Knex from 'knex';
+import { Knex, knex } from 'knex';
 import { knexSnakeCaseMappers } from 'objection';
 import { tenantKnexConfig, tenantSeedConfig } from '@/config/knexConfig';
 import config from '@/config';
 import { ITenant, ITenantDBManager } from '@/interfaces';
 import SystemService from '@/services/Tenancy/SystemService';
 import { TenantDBAlreadyExists } from '@/exceptions';
+import { sanitizeDatabaseName } from '@/utils/sanitizers';
 
 export default class TenantDBManager implements ITenantDBManager {
   static knexCache: { [key: string]: Knex } = {};
 
-  // System database manager.
-  dbManager: any;
-
   // System knex instance.
   sysKnex: Knex;
 
@@ -23,7 +21,6 @@ export default class TenantDBManager implements ITenantDBManager {
   constructor() {
     const systemService = Container.get(SystemService);
 
-    this.dbManager = systemService.dbManager();
     this.sysKnex = systemService.knex();
   }
 
@@ -32,7 +29,9 @@ export default class TenantDBManager implements ITenantDBManager {
    * @return {string}
    */
   private getDatabaseName(tenant: ITenant) {
-    return `${config.tenant.db_name_prefix}${tenant.organizationId}`;
+    return sanitizeDatabaseName(
+      `${config.tenant.db_name_prefix}${tenant.organizationId}`
+    );
   }
 
   /**
@@ -59,7 +58,9 @@ export default class TenantDBManager implements ITenantDBManager {
     await this.throwErrorIfTenantDBExists(tenant);
 
     const databaseName = this.getDatabaseName(tenant);
-    await this.dbManager.createDb(databaseName);
+    await this.sysKnex.raw(
+      `CREATE DATABASE ${databaseName} DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci`
+    );
   }
 
   /**
@@ -72,7 +73,6 @@ export default class TenantDBManager implements ITenantDBManager {
     if (!isExists) {
       return;
     }
-
     await this.dropDatabase(tenant);
   }
 
@@ -83,7 +83,7 @@ export default class TenantDBManager implements ITenantDBManager {
   public async dropDatabase(tenant: ITenant) {
     const databaseName = this.getDatabaseName(tenant);
 
-    await this.dbManager.dropDb(databaseName);
+    await this.sysKnex.raw(`DROP DATABASE IF EXISTS ${databaseName}`);
   }
 
   /**
@@ -118,7 +118,7 @@ export default class TenantDBManager implements ITenantDBManager {
     let knexInstance = TenantDBManager.knexCache[key];
 
     if (!knexInstance) {
-      knexInstance = Knex({
+      knexInstance = knex({
         ...tenantKnexConfig(tenant),
         ...knexSnakeCaseMappers({ upperCase: true }),
       });

packages/server/src/utils/sanitizers.ts

@@ -0,0 +1,4 @@
+export function sanitizeDatabaseName(dbName: string) {
+  // Replace any character that is not alphanumeric or an underscore with an underscore
+  return dbName.replace(/[^a-zA-Z0-9_]/g, '');
+}