feat(touch): adding skip touch option on config

Author: willgm

src/express-session-etcd3.ts

@@ -22,14 +22,16 @@ export interface Etcd3StoreOptions extends IOptions {
    * Defaults to `sess`.
    */
   prefix?: string
+  skipTouch?: boolean
 }
 
 /**
  * Default configuration values for the etcd v3 options
  */
 export const defaultOptions: Etcd3StoreOptions = Object.freeze({
   prefix: 'sess',
-  hosts: '127.0.0.1:2379'
+  hosts: '127.0.0.1:2379',
+  skipTouch: false
 })
 
 /**
@@ -109,6 +111,10 @@ export default class Etcd3Store extends Store {
    * potentially resetting the idle timer.
    */
   touch = (sid: string, session: Express.SessionData, callback: (err: any) => void): void => {
+    if (this.config.skipTouch) {
+      this.debug('SKIP TOUCH "%s"', sid)
+      return
+    }
     this.debug('TOUCH "%s" %O', sid, session)
     this.set(sid, session, callback)
   }

test/express-session-etcd3.test.ts

@@ -181,6 +181,14 @@ describe('Etcd3Store test suit', () => {
       subject.touch(sessionData.sid, sessionData, callback)
       expect(subject.set).toHaveBeenCalledWith(sessionData.sid, sessionData, callback)
     })
+
+    it('should not set it again if skipTouch is true at the adapter config', async () => {
+      const { subject, client } = await createSubject({ skipTouch: true })
+      jest.spyOn(subject, 'set').mockImplementation(jest.fn())
+      const callback = jest.fn()
+      subject.touch(sessionData.sid, sessionData, callback)
+      expect(subject.set).not.toHaveBeenCalled()
+    })
   })
 
   describe('when getting all the sessions', () => {