I need some help with setting up my cognito Is there a prope Serverless Stack #help

I need some help with setting up my cognito. Is th...

Jett Robin Andres

11/20/2021, 1:06 PM

I need some help with setting up my cognito. Is there a proper way to expose

environment

variables to my

preTokenGeneration

and

postAuthentication

handlers? I’m forced to use the old(?) handler interface

Adrian Schweizer

11/20/2021, 3:55 PM

you mean so that your handlers can access cognito?

Adrian Schweizer

11/20/2021, 3:57 PM

if so, just define a policy in the api stack where those handlers routes are set up and attach it to the api stack there

Adrian Schweizer

11/20/2021, 3:59 PM

although, hmmm, I'm not sure it's even needed...shouldn't that trigger setup automatically generate some roles that allow it?

Adrian Schweizer

11/20/2021, 4:03 PM

if it's just feeding other unrelated params over env to the handlers, you'd do that in api stack where the routes for the handlers are in

Adrian Schweizer

11/20/2021, 4:05 PM

Copy code

this.api = new sst.Api(this, "Api", {
         defaultFunctionProps: {
            environment: {
               MY_VAR: "WHATEVER",
            },

Mike McCall

11/20/2021, 5:30 PM

You can add can use a function type or function props for the triggers.

Copy code

preAuthentication: {
        handler: "src/preAuthentication.main",
        timeout: 10,
        environment: { bucketName: bucket.bucketName },
        permissions: [bucket],
      },

https://docs.serverless-stack.com/constructs/Auth#using-the-full-config-for-a-trigger

Frank

11/21/2021, 1:35 AM

Thanks guys!

Frank

11/21/2021, 1:37 AM

@Jett Robin Andres and if you want to expose environment to all ur triggers, do this:

Copy code

this.auth = new sst.Auth(this, "Auth", {
  cognito: {
    userPool: ...,
    defaultFunctionProps: {
      environment: {
        ENV_VAR_A: ...,
        ENV_VAR_B: ...,
      },
    },
    triggers: ...,
  },
});

Jett Robin Andres

11/21/2021, 1:48 AM

@Mike McCall’s solution did the trick. Thanks a lot guys!

Jett Robin Andres

11/21/2021, 1:49 AM

@Frank that’s freakin neat! I’ll take note of that in the future

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