How to access process.env on Google App Engine with Nodejs

1
votes

I'm using react on google app engine.

As is written in the documentation: https://cloud.google.com/appengine/docs/standard/nodejs/runtime#environment_variables

I can access the following Env Variable:

Environment variable    Description
GAE_APPLICATION The ID of your App Engine application.
GAE_DEPLOYMENT_ID   The ID of the current deployment.
GAE_ENV The App Engine environment. Set to standard.
GAE_INSTANCE    The ID of the instance on which your service is currently running.
GAE_MEMORY_MB   The amount of memory available to the application process, in MB.
GAE_RUNTIME The runtime specified in your app.yaml file.
GAE_SERVICE The service name specified in your app.yaml file. If no service name is specified, it is set to default.
GAE_VERSION The current version label of your service.
GOOGLE_CLOUD_PROJECT    The GCP project ID associated with your application.
NODE_ENV    Set to production when your service is deployed.
PORT    The port that receives HTTP requests.

When I deploy my app on google app engine and print process.env console.log(process.env) I have only:

NODE_ENV: "production"
PUBLIC_URL: ""

In the documentation is explicitly written "The following environment variables are set by the runtime", but there are no one of them.

What is wrong?

1
node.jsgoogle-app-engine
I presume you are using the standard environment, right? - Dan Cornilescu
Nope, I'm using the flex environment - Francesco Clementi
Then the list of environment variables is this one, the one you referenced is for the standard environment. Still, your question stands. - Dan Cornilescu
Thanks for pointing me to the right documentation, but the environment variables are still the same two that I reported on the question. - Francesco Clementi

1 Answers

0
votes

What it means by "The following environment variables are set by the runtime" is applicable to applications executed by node. As such, the process.env printed when ran from an express.js application contains those environment variables because you would be executing your code as node .bin/www or node server.js as opposed to react-scripts start when deploying a react.js application. In this case, it is create-react-app who has the responsibility in setting the environment variables. Alternatively, you can manually set these environment variables in accordance to the create-react-app specifications.