amplify-cli
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aws-amplify
function hotswap for development
Is this feature request related to a new or existing Amplify category?
function
Is this related to another service?
function
Describe the feature you'd like to request
When I execute amplify push, amplify-cli calls the CloudFormation API to update the Lambda Function.
Updating Lambda using CloudFormation is slow compared to updating using the aws lambda update-function-code command.
I want to send the code to Lambda faster during development and debugging.
Describe the solution you'd like
I want the amplify function watch command.
When this command is executed, the files under amplify/backend/function/*/src are watched, and when a file change is detected, lambda:UpdateFunctionCode, lambda:PublishLayerVersion, lambda:UpdateFunctionConfiguration are executed.
Describe alternatives you've considered
AWS CDK takes this approach. (see https://github.com/aws/aws-cdk/pull/15748)
Serverless Stack takes a different approach. (see: https://docs.serverless-stack.com/live-lambda-development) Serverless Stack provides an intermediate server and connects the local environment and Lambda with WebSocket.
I like the AWS CDK approach because it's simple.
Additional context
I implemented this feature as a plugin. (currently Node.js only) Recently, colleagues and I have started using this plugin at work. For now, this plugin is working fine, so I think this approach will work.
Is this something that you'd be interested in working on?
- [X] 👋 I may be able to implement this feature request
- [ ] ⚠️ This feature might incur a breaking change
Hey @lambdasawa, this is a great idea we could directly update the code without a push for hotswap. I will bring it up to my team.
I'm currently implementing this. I think I can probably send a pull request tomorrow.
https://github.com/lambdasawa/amplify-cli/tree/function-hotswap
This would be great, looks like the plugin listed above has now been archived
