Make DaprServer configurable with envvars

Signed-off-by: Shubham Sharma <[email protected]>

Author: shubham1172

src/implementation/Server/DaprServer.ts

@@ -18,6 +18,7 @@ import HTTPServerInvoker from './HTTPServer/invoker';
 import HTTPServerActor from './HTTPServer/actor';
 import { DaprClientOptions } from '../../types/DaprClientOptions';
 import { DaprClient } from '../..';
+import { Settings } from '../../utils/Settings.util';
 
 export default class DaprServer {
   // App details
@@ -35,19 +36,19 @@ export default class DaprServer {
   readonly client: DaprClient;
 
   constructor(
-    serverHost = "127.0.0.1"
-    , serverPort: string = process.env.DAPR_SERVER_PORT || "50050"
-    , daprHost = "127.0.0.1"
-    , daprPort = "50051"
+    serverHost = Settings.getDefaultHost()
+    , serverPort?: string
+    , daprHost = Settings.getDefaultHost()
+    , daprPort?: string
     , communicationProtocol: CommunicationProtocolEnum = CommunicationProtocolEnum.HTTP
     , clientOptions: DaprClientOptions = {
       isKeepAlive: true
     }
   ) {
     this.serverHost = serverHost;
-    this.serverPort = serverPort;
+    this.serverPort = serverPort ?? Settings.getDefaultAppPort(communicationProtocol);
     this.daprHost = daprHost;
-    this.daprPort = daprPort;
+    this.daprPort = daprPort ?? Settings.getDefaultPort(communicationProtocol);
 
     // Create a client to interface with the sidecar from the server side
     this.client = new DaprClient(daprHost, daprPort, communicationProtocol, clientOptions);

src/utils/Settings.util.ts

@@ -2,7 +2,9 @@ import CommunicationProtocolEnum from "../enum/CommunicationProtocol.enum";
 
 export class Settings {
     private static readonly defaultHost: string = "127.0.0.1";
+    private static readonly defaultHttpAppPort: string = "3000";
     private static readonly defaultHttpPort: string = "3500";
+    private static readonly defaultGrpcAppPort: string = "50000";
     private static readonly defaultGrpcPort: string = "50001";
 
     static getDefaultHost(): string {
@@ -17,6 +19,11 @@ export class Settings {
         return process.env.DAPR_GRPC_PORT ?? Settings.defaultGrpcPort;
     }
 
+    /**
+     * Gets the default port that the Dapr sidecar is listening to.
+     * @param communicationProtocolEnum communication protocol
+     * @returns port number
+     */
     static getDefaultPort(communicationProtocolEnum: CommunicationProtocolEnum): string {
         switch (communicationProtocolEnum) {
             case CommunicationProtocolEnum.GRPC:
@@ -25,4 +32,26 @@ export class Settings {
                 return this.getDefaultHttpPort();
         }
     }
+
+    static getDefaultHttpAppPort(): string {
+        return process.env.APP_PORT ?? Settings.defaultHttpAppPort;
+    }
+
+    static getDefaultGrpcAppPort(): string {
+        return process.env.APP_PORT ?? Settings.defaultGrpcAppPort;
+    }
+
+    /**
+     * Gets the default port that the application is listening on.
+     * @param communicationProtocolEnum communication protocol
+     * @returns port number
+     */
+    static getDefaultAppPort(communicationProtocolEnum: CommunicationProtocolEnum): string {
+        switch (communicationProtocolEnum) {
+            case CommunicationProtocolEnum.GRPC:
+                return this.getDefaultGrpcAppPort();        
+            default:
+                return this.getDefaultHttpAppPort();
+        }
+    }
 }