How do I use environment variables with AWS SAM CLI?

How do I use environment variables with AWS SAM CLI?

You can define environment variables in your AWS SAM template using the Environment property in your function definition.

Can you give me an example of how to set that up?

Sure! In your template.yaml, you can add something like this:

Resources:
  MyFunction:
    Type: AWS::Serverless::Function
    Properties:
      Handler: app.handler
      Environment:
        MY_ENV_VAR: 'value'

What if I want to use different values for local and deployed environments?

You can use the sam local command with a .env file for local development, and set different values in the AWS console for production.

Is there a way to pass environment variables when running SAM locally?

Yes! You can use the --env-vars option with sam local invoke to specify a JSON file containing your environment variables.