Multiple NodeJS Services/Modules on Google App Engine Flexible Environment

Question

I'm struggling to figure out how to deploy multiple nodejs services on google app engine flexible.

I'm using multiple nodejs classes with firebase-queue to process my tasks. Right now, i'm using my package.json to trigger starting everything at once. However, this has become problematic. I would like to be able to push a change to one particular service/script without having to stop every other script.

My package.json currently looks like something like this:

"scripts": {
    "task1": "node ./src/task1.js",
    "task2": "node ./src/task2.js",
    "start": "npm-run-all -p task1 task2"
}

I'm using different .yaml files to determine which build variant I want to push (Debug or Release) but am finding it hard to deploy each task individually. I found documentation on how to do so in python, but nothing on nodejs. Does anyone have any suggestions?

Answer 1

(Answering my own question, big thanks to Justin for helping)

I was specifically having issues dynamically changing the script to start in my package.json. I found the package.json can access environment variables using '$'

package.json:

"scripts": {
    "start": "node $SCRIPT_TO_RUN"
}

myService.yaml

runtime: nodejs
vm: true
api_version: 1
instance_class: B4
manual_scaling:
  instances: 1
service: cart-monitor-dev

env_variables:
  SCRIPT_TO_RUN: './src/mytask.js'

Then deploy using:

gcloud app deploy myService.yaml