refactor: Update PostgresAppInstance to use static methods and properties

App/Index.ts

@@ -9,7 +9,7 @@ import Workers from "./FeatureSet/Workers/Index";
 import Workflow from "./FeatureSet/Workflow/Index";
 import { PromiseVoidFunction } from "Common/Types/FunctionTypes";
 import { ClickhouseAppInstance } from "Common/Server/Infrastructure/ClickhouseDatabase";
-import { PostgresAppInstance } from "Common/Server/Infrastructure/PostgresDatabase";
+import PostgresAppInstance from "Common/Server/Infrastructure/PostgresDatabase";
 import Redis from "Common/Server/Infrastructure/Redis";
 import InfrastructureStatus from "Common/Server/Infrastructure/Status";
 import logger from "Common/Server/Utils/Logger";

Common/Server/Infrastructure/PostgresDatabase.ts

@@ -8,23 +8,23 @@ export type DatabaseSourceOptions = DataSourceOptions;
 export type DatabaseSource = DataSource;
 
 export default class Database {
-  protected dataSourceOptions: DataSourceOptions | null = null;
-  protected dataSource: DataSource | null = null;
+  protected static dataSourceOptions: DataSourceOptions | null = null;
+  protected static dataSource: DataSource | null = null;
 
-  public getDatasourceOptions(): DataSourceOptions {
+  public static getDatasourceOptions(): DataSourceOptions {
     this.dataSourceOptions = DatabaseDataSourceOptions;
     return this.dataSourceOptions;
   }
 
-  public getDataSource(): DataSource | null {
+  public static getDataSource(): DataSource | null {
     return this.dataSource;
   }
 
-  public isConnected(): boolean {
+  public static isConnected(): boolean {
     return Boolean(this.dataSource);
   }
 
-  public async connect(): Promise<DataSource> {
+  public static async connect(): Promise<DataSource> {
     let retry: number = 0;
 
     const dataSourceOptions: DataSourceOptions = this.getDatasourceOptions();
@@ -67,14 +67,14 @@ export default class Database {
     }
   }
 
-  public async disconnect(): Promise<void> {
+  public static async disconnect(): Promise<void> {
     if (this.dataSource) {
       await this.dataSource.destroy();
       this.dataSource = null;
     }
   }
 
-  public async checkConnnectionStatus(): Promise<boolean> {
+  public static async checkConnnectionStatus(): Promise<boolean> {
     // check popstgres connection to see if it is still alive
 
     try {
@@ -94,7 +94,7 @@ export default class Database {
     }
   }
 
-  public async dropDatabase(): Promise<void> {
+  public static async dropDatabase(): Promise<void> {
     await dropDatabase({
       options: this.getDatasourceOptions(),
     });
@@ -102,23 +102,21 @@ export default class Database {
     this.dataSourceOptions = null;
   }
 
-  public async createDatabase(): Promise<void> {
+  public static async createDatabase(): Promise<void> {
     await createDatabase({
       options: this.getDatasourceOptions(),
       ifNotExist: true,
     });
   }
 
-  public async createAndConnect(): Promise<void> {
+  public static async createAndConnect(): Promise<void> {
     await this.createDatabase();
     await this.connect();
   }
 
-  public async disconnectAndDropDatabase(): Promise<void> {
+  public static async disconnectAndDropDatabase(): Promise<void> {
     // Drop the database. Since this is the in-mem db, it will be destroyed.
     await this.disconnect();
     await this.dropDatabase();
   }
 }
-
-export const PostgresAppInstance: Database = new Database();

Common/Server/Infrastructure/Status.ts

@@ -1,6 +1,6 @@
 // This class checks the status of all the datasources.
 import { ClickhouseAppInstance } from "./ClickhouseDatabase";
-import { PostgresAppInstance } from "./PostgresDatabase";
+import PostgresAppInstance from "./PostgresDatabase";
 import Redis from "./Redis";
 import DatabaseNotConnectedException from "Common/Types/Exception/DatabaseNotConnectedException";
 

Common/Server/Services/DatabaseService.ts

@@ -1,5 +1,5 @@
 import { AppApiHostname, EncryptionSecret } from "../EnvironmentConfig";
-import { PostgresAppInstance } from "../Infrastructure/PostgresDatabase";
+import PostgresAppInstance from "../Infrastructure/PostgresDatabase";
 import ClusterKeyAuthorization from "../Middleware/ClusterKeyAuthorization";
 import CountBy from "../Types/Database/CountBy";
 import CreateBy from "../Types/Database/CreateBy";

Common/Tests/Server/TestingUtils/__mocks__/TestDatabase.mock.ts

@@ -1,7 +1,6 @@
 import getTestDataSourceOptions from "../Postgres/TestDataSourceOptions";
-import {
+import PostgresAppInstance, {
   DatabaseSourceOptions,
-  PostgresAppInstance,
 } from "../../../../Server/Infrastructure/PostgresDatabase";
 import Redis from "../../../../Server/Infrastructure/Redis";
 import getTestRedisConnectionOptions from "../Redis/TestRedisOptions";

Ingestor/Index.ts

@@ -8,7 +8,7 @@ import RegisterAPI from "./API/Register";
 import ServerMonitorAPI from "./API/ServerMonitor";
 import { PromiseVoidFunction } from "Common/Types/FunctionTypes";
 import { ClickhouseAppInstance } from "Common/Server/Infrastructure/ClickhouseDatabase";
-import { PostgresAppInstance } from "Common/Server/Infrastructure/PostgresDatabase";
+import PostgresAppInstance from "Common/Server/Infrastructure/PostgresDatabase";
 import Redis from "Common/Server/Infrastructure/Redis";
 import InfrastructureStatus from "Common/Server/Infrastructure/Status";
 import Express, { ExpressApplication } from "Common/Server/Utils/Express";

Nginx/Index.ts

@@ -1,6 +1,6 @@
 import AcmeWriteCertificatesJob from "./Jobs/AcmeWriteCertificates";
 import { PromiseVoidFunction } from "Common/Types/FunctionTypes";
-import { PostgresAppInstance } from "Common/Server/Infrastructure/PostgresDatabase";
+import PostgresAppInstance from "Common/Server/Infrastructure/PostgresDatabase";
 import InfrastructureStatus from "Common/Server/Infrastructure/Status";
 import logger from "Common/Server/Utils/Logger";
 import App from "Common/Server/Utils/StartServer";