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aws-lambda-runtime-interface-emulator | gateway | |
---|---|---|
4 | 2 | |
871 | 647 | |
1.7% | 0.3% | |
5.2 | 0.0 | |
6 days ago | almost 2 years ago | |
Go | Go | |
Apache License 2.0 | MIT License |
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aws-lambda-runtime-interface-emulator
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Understanding the AWS Lambda Runtime API
Enter the aws-lambda-runtime-interface-emulator. This tool will allow us to emulate the AWS Lambda Runtime API locally (I suspect that the AWS SAM uses this tool under the hood as well). The aws-lambda-runtime-interface-emulator is designed to be used with Docker. Still, nothing stops us from containerizing our code for the sake of development and then, whenever we are ready, proceeding with deployment how we wish to. This local workflow is a bit more involved than the previous one, but it might be a valid alternative for those not using AWS SAM or are already using containers to deploy their Lambdas.
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Puppeteer performance in AWS Lambda Docker containers
There is a special tool to test AWS Lambda images locally. It's called AWS Lambda Runtime Interface Emulator (RIE). You have two options: include RIE in your image or install it locally. We don't need it in the production image, so let's choose the second option. We will download binary locally and mount it to our image if we need to test it.
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Ask HN: Does anyone else find the AWS Lambda developer experience poor?
Suggestions:
1. If you are building APIs and using Lambda functions as targets from an API Gateway API, look into libraries like serverless-wsgi (Python) or wai-handler-hal (Haskell) that translate between API Gateway request/response payloads and some kind of ecosystem-native representation. Then as long as you're writing code where all state gets persisted outside of the request/response cycle, you can develop locally as if you were writing for a more normal deploy environment.
2. Look into the lambda runtime interface emulator ( https://github.com/aws/aws-lambda-runtime-interface-emulator... ). This lets you send invoke requests to a fake listener and locally test the lambda more easily. While the emulator is provided in the AWS container base images, you don't need to run it inside a container if you're deploying with zip files. (AWS-provided container images automatically enable the emulator if not running in a lambda runtime environment, and using docker for port remapping is nice. But not at all required.)
3. Get really good at capturing all requests to external services, and mocking them out for local testing. Whether this is with free monads, effect systems, gateway classes will depend on your language and library choices.
gateway
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Build Scalable Applications with AWS Lambda and Go
We had great success with https://github.com/apex/gateway
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Ask HN: Does anyone else find the AWS Lambda developer experience poor?
I write Lambda functions in golang. In dev I run the function as local http server. In prod I map a custom domain to the lambda, routing is done internally to the function. API Gateway is only used for the top level route. This workflow is enabled by https://github.com/apex/gateway
In principle I try to avoid Amazon Web Services that lock me into the platform. So, for my dev stack I run a few other containers to give me the equivalent of the prod environment, RDS (MySQL or PostgreSQL), ES (OpenDistro), S3 (Minio), and SES
What are some alternatives?
Moto - A library that allows you to easily mock out tests based on AWS infrastructure.
aws-lambda-go-api-proxy - lambda-go-api-proxy makes it easy to port APIs written with Go frameworks such as Gin (https://gin-gonic.github.io/gin/ ) to AWS Lambda and Amazon API Gateway.
serverless-application-model - The AWS Serverless Application Model (AWS SAM) transform is a AWS CloudFormation macro that transforms SAM templates into CloudFormation templates.
faasd - A lightweight & portable faas engine
serverless-offline - Emulate AWS λ and API Gateway locally when developing your Serverless project
cloudfront-autoindex - AWS Lambda to work around index.html S3/CloudFront mess
aws-lambda-go - Libraries, samples and tools to help Go developers develop AWS Lambda functions.
lambda-functionurl-dynamodb-sam-go - Use Lambda Function URL to write a Serverless app backed by DynamoDB
docker-lambda - Docker images and test runners that replicate the live AWS Lambda environment
aws-lambda-python-runtime-interface-client