feat: output AWS Lambda handler

[aheissenberger]

experimental!

• uses the Hono wrapper for AWS Lambda
• bundles all dependencies except node into one file

suggested AWS setup:

• copy /public/** to S3 bucket
• CloudFront
  • /assets/, /images/ from S3 bucket
  • /* from API Gateway with Lambda Function
  • API Gateway / Lambda Function
  • serve all dynamic content
  • serve static content which is not coved by the url pattern forwarded to the S3 bucket

Demo Repo

https://github.com/aheissenberger/waku-aws-lambda-demo

(needs to be linked to my fork to work)

Please provide some feedback: 1) the current implementation tries to keep the needed transformations of the output in output-aws-lambda.ts which requires the build process to repeate to include the external dependencies 2) when doing the second build step rollup is not able to find the hono package. This package needs to be added to the WAKU project to avoid the build to fail.

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[dai-shi]

Hi, nice work!

experimental!

Let's make it a draft PR for the time.

CloudFront Function which intercepts all requests to Lambda Function and redirects to S3 bucket based on a list of static routes - optional to reduce the calls to the lambda function

I'm working on some (big) changes to make this possible. Stay tuned.

1. the current implementation tries to keep the needed transformations of the output in output-aws-lambda.ts which requires the build process to repeate to include the external dependencies

What does that mean? Ah, you are using vite build. Yeah, we want to avoid it if possible.

2. when doing the second build step rollup is not able to find the hono package. This package needs to be added to the WAKU project to avoid the build to fail.

I'll work on it for output-vercel later. Please wait for that.

[aheissenberger]

@dai-shi any idea why switching to Lambda response streaming does not work? https://hono.dev/getting-started/aws-lambda#lambda-response-streaming

I switched the handler to streamHandle and added RESPONSE_STREAM in serverless.yml

functions:
  ssr:
    handler: dist/serve.handler
    events:
      - httpApi: "*"
    url:
      invokeMode: RESPONSE_STREAM

[dai-shi]

Unfortunately, I'm not very familiar with Lambda.

[dai-shi]

I'll work on it for output-vercel later. Please wait for that.

Still work in progress, but #442 will be ready eventually.

[aheissenberger]

I have added a short info in the README.md.

I would suggest to provide one project in the example folder which includes a working Serverless framework configuration file.

[dai-shi]

thanks. readme should be kept short. we may have docs/* if we need detailed explanation.

as for examples, we already have many examples and i'm trying to reduce them. maybe, we should create a new repository for examples, eventually.

[dai-shi]

442 is already merged and #443 is ready. I think it helps you to finish up this PR.