Configuring Stage-Based Domain Names for server-side-website

[renereed1]

Hi maintainers,

First, I want to thank you for the excellent work on the serverless-lift plugin. It has significantly streamlined our serverless deployments.

I have a question regarding the configuration of stage-based domain names using the server-side-website construct. Specifically, I'm looking to set up different domains based on the deployment stage. Here's the scenario I'm trying to achieve:

Stage: prod
Domain: example.com

Stage: dev
Domain: dev.example.com

Stage: abc
Doamin: abc.example.com

Here is an example of my current serverless.yml configuration:

service: my-service

provider:
name: aws
region: us-west-2
stage: ${opt:stage, 'dev'}
runtime: provided.al2

plugins:

• serverless-lift

custom:
baseDomain: example.com
domain:
'Fn::If':
- IsProd
- ${self:custom.baseDomain}
- ${self:provider.stage}.${self:custom.baseDomain}

constructs:
website:
type: server-side-website
assets:
'/assets/*': public/assets
domain: ${self:custom.domain}
certificate: arn:aws:acm:region:account-id:certificate/certificate-id

resources:
Conditions:
IsProd:
Fn::Equals:
- ${self:provider.stage}
- prod

Unfortunately, this configuration results in an invalid format error. Is there a recommended approach to dynamically set domain names based on the stage using the server-side-website construct in serverless-lift?

I appreciate any guidance or examples you can provide. Thanks in advance for your assistance!

Best regards,

[mnapoli]

I would recommend to use stage parameters: https://www.serverless.com/framework/docs/guides/parameters#stage-parameters

[renereed1]

This is perfect, but available in serverless v4. Is there a recommended approach for v3? The issue I am seeing is

custom:
baseDomain: example.com
domain:
'Fn::If':

• IsProd
• ${self:custom.baseDomain}
• ${self:provider.stage}.${self:custom.baseDomain}

would work, but Cloudfront is configured before the environment based domain is generated.

Thanks,

[mnapoli]

it is available in v3 under the params key, it's a shame they removed that from the docs:

params:
  default:
    domain: ${sls:stage}.preview.myapp.com
  prod:
    domain: myapp.com
  dev:
    domain: preview.myapp.com

Then:

provider:
  environment:
    APP_DOMAIN: ${param:domain}

[renereed1]

Ah, Works wonderfully. Thank you!