Hi, we're looking to use wiremock to mock AWS SSM locally to pull in env vars using the following:

env:
    image: wiremock/wiremock
    healthcheck:
      test:
        - CMD-SHELL
        - wget --server-response -qO /dev/null <http://localhost:8080/__admin> 2>&1 | grep 'HTTP/1.1 200 OK' || exit 1
      interval: 10s
      timeout: 3s
      retries: 30
    command:
      - --disable-banner
      - --global-response-templating
      - --permitted-system-keys=.*
    env_file:
      - /location/of/locally/decrypted/vars/.env
    volumes:
      - /location/of/wiremock/files:/home/wiremock:ro

And want to use the following but keep getting an error when trying to set

key

to something "dynamic"

{
  "request": {
    "method": "GET",
    "urlPath": "/systemsmanager/parameters/get/",
    "queryParameters": {
      "name": {
        "matches": "^/path/to/env/var/([A-Z_]+)$"
      }
    }
  },
  "response": {
    "jsonBody": {
      "Name": "{{request.query.name}}",
      "SecretString": "{{systemValue type='ENVIRONMENT' key='{{regexExtract request.query.name '[A-Z_]+'}}'}}"
    }
  }
}

Is what we're trying to do even possible? Or do we have to explicitly set "key" to a string value?

You’re pretty close but need to use an inner Handlebars expression for the key:

{{systemValue type='ENVIRONMENT' key=(regexExtract request.query.name '[A-Z_]+')}}

Ah cool, thanks, I wondered if I was missing something but couldn’t quite find it in the docs

Glad to hear it!

This is going to make replicating the AWS Secrets Lambda Layer locally so much easier

Good to hear you're getting value from it. AWS services can be a pain to test against.