feat: RequestClient updated to become more customizable

lib/base/RequestClient.d.ts

@@ -5,7 +5,7 @@ declare class RequestClient {
   constructor(opts?: RequestClient.RequestClientOptions);
   /**
    * Make an HTTP request
-   * @param opts The request options
+   * @param opts The options https.Agent takes in
    */
   request<TData>(
     opts: RequestClient.RequestOptions<TData>
@@ -59,9 +59,33 @@ declare namespace RequestClient {
   export interface RequestClientOptions {
     /**
      * A timeout in milliseconds. This will be used as the HTTPS agent's socket
-     * timeout, and as the default request timeout.
+     * timeout, AND as the default request timeout.
      */
     timeout?: number;
+    /**
+     * https.Agent keepAlive option
+     */
+    keepAlive?: boolean;
+    /**
+     * https.Agent keepAliveMSecs option
+     */
+    keepAliveMsecs?: number;
+    /**
+     * https.Agent maxSockets option
+     */
+    maxSockets?: number;
+    /**
+     * https.Agent maxTotalSockets option
+     */
+    maxTotalSockets?: number;
+    /**
+     * https.Agent maxFreeSockets option
+     */
+    maxFreeSockets?: number;
+    /**
+     * https.Agent scheduling option
+     */
+    scheduling?: string;
   }
 
   export interface Headers {

lib/base/RequestClient.js

@@ -16,8 +16,14 @@ const DEFAULT_TIMEOUT = 30000;
 
 /**
  * Make http request
- * @param {object} opts - The options argument
- * @param {string} opts.timeout - A custom timeout to use. This will be used as the socket timeout, and as the default request timeout.
+ * @param {object} opts - The options passed to https.Agent
+ * @param {number} opts.timeout - https.Agent timeout option. Used as the socket timeout, AND as the default request timeout.
+ * @param {boolean} opts.keepAlive - https.Agent keepAlive option
+ * @param {number} opts.keepAliveMsecs - https.Agent keepAliveMsecs option
+ * @param {number} opts.maxSockets - https.Agent maxSockets option
+ * @param {number} opts.maxTotalSockets - https.Agent maxTotalSockets option
+ * @param {number} opts.maxFreeSockets - https.Agent maxFreeSockets option
+ * @param {string} opts.scheduling - https.Agent scheduling option
  */
 var RequestClient = function (opts) {
   opts = opts || {};
@@ -26,6 +32,12 @@ var RequestClient = function (opts) {
   // construct an https agent
   let agentOpts = {
     timeout: this.defaultTimeout,
+    keepAlive: opts.keepAlive,
+    keepAliveMsecs: opts.keepAliveMsecs,
+    maxSockets: opts.maxSockets,
+    maxTotalSockets: opts.maxTotalSockets,
+    maxFreeSockets: opts.maxFreeSockets,
+    scheduling: opts.scheduling,
   };
 
   let agent;

spec/unit/base/RequestClient.spec.js

@@ -53,6 +53,12 @@ describe('RequestClient constructor', function() {
     });
     expect(requestClient.axios.defaults.httpsAgent).not.toBeInstanceOf(HttpsProxyAgent);
     expect(requestClient.axios.defaults.httpsAgent.options.timeout).toEqual(30000);
+    expect(requestClient.axios.defaults.httpsAgent.options.keepAlive).toBe(undefined);
+    expect(requestClient.axios.defaults.httpsAgent.options.keepAliveMsecs).toBe(undefined);
+    expect(requestClient.axios.defaults.httpsAgent.options.maxSockets).toBe(undefined);
+    expect(requestClient.axios.defaults.httpsAgent.options.maxTotalSockets).toBe(undefined);
+    expect(requestClient.axios.defaults.httpsAgent.options.maxFreeSockets).toBe(undefined);
+    expect(requestClient.axios.defaults.httpsAgent.options.scheduling).toBe(undefined);
   });
 
   it('should initialize with a proxy', function() {
@@ -67,14 +73,36 @@ describe('RequestClient constructor', function() {
     expect(requestClient.axios.defaults.httpsAgent.proxy.host).toEqual('example.com');
   });
 
-  it('should initialize with a timeout', function() {
-    const requestClient = new RequestClientMock({ timeout: 5000 });
+  it('should initialize custom https settings (all settings customized)', function() {
+    const requestClient = new RequestClientMock({ timeout: 5000, keepAlive: true, keepAliveMsecs: 1500, maxSockets: 100, maxTotalSockets: 1000, maxFreeSockets: 10, scheduling: 'fifo'});
     expect(requestClient.defaultTimeout).toEqual(5000);
     expect(requestClient.axios.defaults.headers.post).toEqual({
       'Content-Type': 'application/x-www-form-urlencoded',
     });
     expect(requestClient.axios.defaults.httpsAgent).not.toBeInstanceOf(HttpsProxyAgent);
     expect(requestClient.axios.defaults.httpsAgent.options.timeout).toEqual(5000);
+    expect(requestClient.axios.defaults.httpsAgent.options.keepAlive).toBe(true);
+    expect(requestClient.axios.defaults.httpsAgent.options.keepAliveMsecs).toEqual(1500);
+    expect(requestClient.axios.defaults.httpsAgent.options.maxSockets).toEqual(100);
+    expect(requestClient.axios.defaults.httpsAgent.options.maxTotalSockets).toEqual(1000);
+    expect(requestClient.axios.defaults.httpsAgent.options.maxFreeSockets).toEqual(10);
+    expect(requestClient.axios.defaults.httpsAgent.options.scheduling).toEqual('fifo');
+  });
+
+  it('should initialize custom https settings (some settings customized)', function() {
+    const requestClient = new RequestClientMock({ timeout: 5000, keepAlive: false, maxTotalSockets: 1500, scheduling: 'lifo'});
+    expect(requestClient.defaultTimeout).toEqual(5000);
+    expect(requestClient.axios.defaults.headers.post).toEqual({
+      'Content-Type': 'application/x-www-form-urlencoded',
+    });
+    expect(requestClient.axios.defaults.httpsAgent).not.toBeInstanceOf(HttpsProxyAgent);
+    expect(requestClient.axios.defaults.httpsAgent.options.timeout).toEqual(5000);
+    expect(requestClient.axios.defaults.httpsAgent.options.keepAlive).toBe(false);
+    expect(requestClient.axios.defaults.httpsAgent.options.keepAliveMsecs).toBe(undefined);
+    expect(requestClient.axios.defaults.httpsAgent.options.maxSockets).toBe(undefined);
+    expect(requestClient.axios.defaults.httpsAgent.options.maxTotalSockets).toEqual(1500);
+    expect(requestClient.axios.defaults.httpsAgent.options.maxFreeSockets).toBe(undefined);
+    expect(requestClient.axios.defaults.httpsAgent.options.scheduling).toEqual('lifo');
   });
 });