middy
ajv
middy | ajv | |
---|---|---|
22 | 60 | |
3,637 | 13,383 | |
0.6% | 0.8% | |
9.3 | 6.3 | |
12 days ago | 8 days ago | |
JavaScript | TypeScript | |
MIT License | MIT License |
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middy
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Clean authorization control in serverless functions
In many cases, you will have to write the same authorization code in multiple functions. For example, you might want to check that the user is in the requested organization. You can share this code in a middleware. If you are using AWS Lambda, you can rely on middy.
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Testing Serverless Applications on AWS
Adding the is-test flag to our object metadata gave us our way of passing some kind of test context into our workload. The next step was to make the Lambda Function capable of discovering the context and then using that to control how it behaves under test. For this we used Middy.
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Learn serverless on AWS step-by-step: Strong Types!
I also decided to use the middy library to add CORS management to our lambda function. This will allow us to call our lambda function from our frontend, without having to worry about CORS.
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Go Lambda Middlewae
Is there any equivalent to Node based https://middy.js.org/ for Golang?
- Middy: AWS Lambda middleware framework for Node.js
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The Old Faithful: Why SSM Parameter Store still reigns over Secrets Manager
And if your requirements were to change at a later date, it’s straightforward to swap out SSM Parameter Store with Secrets Manager there and then. Especially if you’re accessing the relevant service through a middleware layer such as Middy for javascript Lambda functions.
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Implementing Magic Links with Amazon Cognito: A Step-by-Step Guide
This function uses the Middy middleware engine to handle unhandled errors and add CORS headers in the response.
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Ask HN: What would be your stack if you are building an MVP today?
I mean I'm literally building an AWS lambda function that outputs HTML when it's called via API Gateway. So someone hits https://mydomain.com/mycoolpage, then the MyCoolPage AWS Lambda function is executed and outputs whatever.
If you're interested, I use https://middy.js.org/ as a middleware engine for my AWS lambda functions which I find helpful.
I use the open sourced serverless framework for doing deploys https://www.serverless.com/
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tRPC: Build Full-Stack TypeScript Applications With Type Safety
middy for lambda-side middleware
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How to Securely Use Secrets in AWS Lambda?
That is it from the CDK side. Now let us create the handler and retrieve that secret. I like to use middy which describes itself as "stylish Node.js middleware engine for AWS Lambda". It offers some helpful middlewares like ssm which will help us retrieve and cache values from SSM Parameter Store. (Middy provides various other official middlewares including one for Secrets Manager.) I prefer a middleware for this because it keeps the code for retrieving the secret out of your handler which should deal with actual business logic.
ajv
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Popular Libraries For Building Type-safe Web Application APIs
Ajv’s documentation is available here.
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6 Reasons why JSON Schema is worth your time
In the JavaScript ecosystem you can use the excellent AJV package to validate any JavaScript object against a JSON schema. This is especially useful to ensure that API contracts are maintained when communicating with other services.
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Migrate Your Express Application to Fastify
Since Fastify supports schema validation with Ajv, the validate module is no longer required on the /shorten route, and we can specify the JSON schema directly on the route. The controllers for both routes will largely remain the same, except that the res parameter is renamed to reply as before:
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Has anybody used Typia library?
There's a ton of schema validators out there and most devs have their personal favorite. Mine was zod and is now typebox + ajv.
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Accept only specific keys in JSON or form-data format in express?
Good validator library: https://www.npmjs.com/package/ajv
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Advanced Fastify: Hooks, Middleware, and Decorators
Fastify uses JSON schema to define the validation rules for each route's input payload, which includes the request body, query string, parameters, and headers. The JSON schema is a standard format for defining the structure and constraints of JSON data, and Fastify uses Ajv, one of the fastest and most efficient JSON schema validators available.
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Getting Started with Fastify for Node.js
In Fastify, JSON schema validation is a built-in feature that allows you to validate the payload of incoming requests before the handler function is executed. This ensures that incoming data is in the expected format and meets the required criteria for your business logic. Fastify's JSON schema validation is powered by the Ajv library, a fast and efficient JSON schema validator.
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How can we map data from JSON to typescript object efficiently?
I think you're looking for a json schema validator like Ajv or Zod.
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5 useful JSON tools to improve your productivity
We can use JSON Schema to validate that our data adheres to a specific structure. Ajv is one popular validator tool for JavaScript applications that allows us to create a schema and then validate JSON against that schema. Here's an example of using Ajv to validate one of the above JSON examples against a schema:
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Ask HN: JSON API object type definitions and validation in 2023?
Hey HN,
We're designing a new system and have been kicking the can about JSON object definitions and validation. Soon we need to settle on a system to validate API request bodies and provide helpful error messages.
In the past, I've used JSON Schema ( https://json-schema.org/ ) to define definitions and ajv ( https://ajv.js.org/ ) to validate, but it's a bit verbose and ajv validation errors are more cryptic than I'd like to deal with.
TypeSchema looks interesting. It seems solid (and perhaps stable?), but development hasn't been active for 2 years. It also looks like we'd still need to generate JSON Schema and choose a validation library
Anyway, I'm very curious how others are approaching this problem. How do you organize and generate validations for your type definitions? What libraries do you use to validate and provide human readable error messages?
Thank you!
What are some alternatives?
aws-cdk - The AWS Cloud Development Kit is a framework for defining cloud infrastructure in code
joi - The most powerful data validation library for JS [Moved to: https://github.com/hapijs/joi]
dynamodb-toolbox - A simple set of tools for working with Amazon DynamoDB and the DocumentClient
Yup - Dead simple Object schema validation
aws-sdk-js-v3 - Modularized AWS SDK for JavaScript.
zod - TypeScript-first schema validation with static type inference
typescript-badges - :smirk_cat: TypeScript Badges
tv4 - Tiny Validator for JSON Schema v4
powertools-lambda-typescript - Powertools is a developer toolkit to implement Serverless best practices and increase developer velocity.
class-validator - Decorator-based property validation for classes.
projen - Rapidly build modern applications with advanced configuration management
typebox - Json Schema Type Builder with Static Type Resolution for TypeScript