如何设置GAE环境特定的环境变量？

Question

I've got a GAE application in Go using martini. I need to be able to set the MARTINI_ENV environment variable to tell martini that it should initialize with production settings. According to the Python docs you can set environment variables in the app.yaml. I didn't see any mention of this in the Go docs, but I'm guessing it should work the same.

I need to be able to set the MARTINI_ENV environment variable to production, but I only want to do that when I'm actually in production (i.e. !appengine.IsDevAppServer()). Is there any way to tell app.yaml to only do this in running on the non-dev server?

Answer 1

GAE in Go has no concept for setting environment variables since these won't be shared across your GAE instances.

Since martini.Env is an exported variable though you are able to set it using your own logic. There are multiple ways to do this:

1. Default setting martini.Env to production when MARTINI_ENV is not present
2. Add your own config.yaml to your repo, parse it and set martini.Env from there
3. Use a library like godotenv with its Read function, which will read your dotfile instead of loading it into the env.