middy | 🛵 The stylish Node.js middleware engine for AWS Lambda 🛵 | Runtime Evironment library

by middyjs JavaScript Version: 4.5.0 License: MIT

X-Ray Key Features Code Snippets(3)Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | middy Summary

middy is a JavaScript library typically used in Server, Runtime Evironment, Nodejs, Express.js applications. middy has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can install using 'npm i @tinyanvil/http-multipart-body-parser' or download it from GitHub, npm.

Middy is a very simple middleware engine that allows you to simplify your AWS Lambda code when using Node.js. If you have used web frameworks like Express, then you will be familiar with the concepts adopted in Middy and you will be able to get started very quickly. A middleware engine allows you to focus on the strict business logic of your Lambda and then attach additional common elements like authentication, authorization, validation, serialization, etc. in a modular and reusable way by decorating the main business logic.

Support

Quality

Security

License

Reuse

Support

middy has a medium active ecosystem.

It has 3371 star(s) with 339 fork(s). There are 36 watchers for this library.

There were 4 major release(s) in the last 12 months.

There are 2 open issues and 502 have been closed. On average issues are closed in 23 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of middy is 4.5.0

Quality

middy has 0 bugs and 0 code smells.

Security

middy has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

middy code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

middy is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

middy releases are available to install and integrate.

Deployable package is available in npm.

Installation instructions, examples and code snippets are available.

Top functions reviewed by kandi - BETA

kandi has reviewed middy and discovered the below as its top functions. This is intended to give you an instant insight into middy implemented functionality, and help decide if they suit your requirements.

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middy Key Features

No Key Features are available at this moment for middy.

middy Examples and Code Snippets

middy-middleware-jwt-auth,Usage

TypeScript

Lines of Code : 54

License : Permissive (MIT)

Copy

import createHttpError from 'http-errors'
import middy from '@middy/core'
import httpErrorHandler from '@middy/http-error-handler'
import httpHeaderNormalizer from '@middy/http-header-normalizer'
import JWTAuthMiddleware, { EncryptionAlgorithms, IAut

Serverless Cognito Permission Middleware,Examples

JavaScript

Lines of Code : 50

License : Permissive (MIT)

Copy

const middy = require('@middy/core')
const cognitoPermission = require('@marcosantonocito/middy-cognito-permission')

const handler = middy((event, context, cb) => {
  cb(null, {})
})

handler.use(cognitoPermission({
  allowedRoles: ['Admin']
}))

middy-middleware-class-validator,Usage

TypeScript

Lines of Code : 40

License : Permissive (MIT)

Copy

// When using decorators, don't forget to import this in the very first line of code
import 'reflect-metadata'

import { APIGatewayProxyEvent } from 'aws-lambda'
import { IsString } from 'class-validator'
import middy from '@middy/core'
import JSONEr

Community Discussions

Trending Discussions on middy

Serverless Offline & DynamoDB throws Local UnknownEndpoint: Inaccessible host: localhost at port 8000 Service may not be available in localhost region

Webpack not including all dependencies on deploying serveless application

Serverless can't fetch all records Event object failed validation?

Extending a middy middleware function in nodejs

middy-ssm not picking up changes to the lambda's execution role

how to unit test if handler function is called when using middy

Serverless vs Serverless Cloud

how to find centre value of a contiguous set of booleans

Middy with TypeScript, callback type

AWS Lambda - PDF Uploads to S3 return blank pages

QUESTION

Serverless Offline & DynamoDB throws Local UnknownEndpoint: Inaccessible host: localhost at port 8000 Service may not be available in localhost region

Asked 2022-Apr-11 at 10:19

I'm playin around with Serverless and I have no luck getting serverless-offline to work with serverless-dynamodb-local. I have very minimal setup, it takes 3minutes to reproduce, I did it like this:

Generate a TS Serverless project like - sls create -t aws-nodejs-typescript --path folder-name
install dependencies npm i
Add DynamoDB local npm install --save serverless-dynamodb-local
Add serverless offline npm install serverless-offline --save-dev
Install dynamodb sls dynamodb install

Now I update serverless.ts file like

Include installed plugins in the correct order

...

ANSWER

Answered 2022-Apr-11 at 10:19

Turns out it's most likely an environment issue of my MacBook. My friend tried exactly the same code on his computer and it was working for him.

Still if anyone has an idea why this might be happening let me know please.

EDIT: So turned out it was a problem with my node version, I was running v17.3.1. After switching to v16.4.0 it works like a charm. 🥳

Source https://stackoverflow.com/questions/71799147

QUESTION

Webpack not including all dependencies on deploying serveless application

Asked 2022-Feb-23 at 22:18

Am getting an error when I am deploying serverless lambda function on AWS

...

ANSWER

Answered 2022-Feb-23 at 22:18

Full credit to this blog post

You are developing a NodeJS + Webpack + Sequelize + pg + pg-hstore application. You compile everything and when you execute your webpack bundle, you have the following error

Source https://stackoverflow.com/questions/68964188

QUESTION

Serverless can't fetch all records Event object failed validation?

Asked 2022-Feb-07 at 09:59

I am trying to fetch all records using query and JSON schema but I am keep getting Event object failed validation unless I pass a query it didn't give me any result. I am trying to fetch all the records that have status=OPEN I set the default value of status=OPEN but it looks like default value is working. Unless I pass the status=OPEN as a query Please help me!!!

And used @middy/validator for this case anyone it's been 2 days I still can't figured out the problem

JSON Schema file ...

ANSWER

Answered 2022-Feb-07 at 09:59

The validator is expecting a queryStringParameters property of type object. According to the JSON Schema Specification for Objects, if a property is declared as having a certain type, that property fails validation if it is has a different type.

If you don't pass any query parameters to Api Gateway (in a Lambda Proxy integration), queryStringParameters will be null, but you have specified that it must be an object and null is not an object.

It is possible to specify several allowed types in the Schema: type: ['object', 'null']. You can read more about using several types here.

EDIT: To be able to set status to 'OPEN' even when queryStringParameters is null in the query, you can give queryStringParameters a default value (an object), with status set to 'OPEN'):

Source https://stackoverflow.com/questions/70914208

QUESTION

Extending a middy middleware function in nodejs

Asked 2022-Feb-06 at 20:50

In my lambda code written in nodejs, I want to extend the httpErrorhandler middleware and create a wrapper around it.

Currently I have something like below.

...

ANSWER

Answered 2022-Feb-06 at 20:50

Hi core maintainer of Middy here. Your pseudo code is almost correct. In Middy >=2.0.0, httpErrorHandler takes an options object. See https://github.com/middyjs/middy/tree/main/packages/http-error-handler for documentation.

Source https://stackoverflow.com/questions/70926595

QUESTION

middy-ssm not picking up changes to the lambda's execution role

Asked 2021-Dec-27 at 12:00

We're using middy-ssm to fetch & cache SSM parameter values during lambda initialization. We ran into a situation where the execution role of the lambda did not have access to perform SSM::GetParameters on the path that it attempted to fetch. We updated a policy on the role to allow access, but it appeared like the lambda function never picked up the changes to permissions, but instead kept failing due to missing permissions until the end of the lifecycle (closer to 1 hour as requests kept on coming to it).

I then did a test where I fetched parameters using both the aws-lambda SDK directly and middy-ssm. Initially the lambda role didn't have permissions and both methods failed. We updated the policy and after a couple of minutes, the code that used the SDK was able to retrieve the parameter, but the middy middleware kept failing.

I tried to interpret the implementation of middy-ssm to figure out if the error result is somehow cached or what is going on there, but couldn't really pinpoint the issue. Any insight and/or suggestions how to overcome this are welcome! Thanks!

...

ANSWER

Answered 2021-Dec-27 at 12:00

So as pointed out by Will in the comments, this turned out to be a bug.

Source https://stackoverflow.com/questions/70418876

QUESTION

how to unit test if handler function is called when using middy

Asked 2021-Dec-07 at 08:51

im using an http request function as the handler function in middy and then use the ssm middleware to fetch some ssm parameters before initiating the http request. like this:

...

ANSWER

Answered 2021-Dec-05 at 03:57

You need to mock middy instead, to make it becomes a useless function. That function recipe a function as a parameter and return that parameter.

Source https://stackoverflow.com/questions/70214591

QUESTION

Serverless vs Serverless Cloud

Asked 2021-Nov-01 at 20:59

I built an API using Express which, while initially meant to be deployed to EC2, will now be deployed to Lambda. I looked into Middy.js initially, but there wasn't enough documentation on how to use it to build APIs.

Upon more research, I landed upon Laconia and Serverless. The community around Serverless seems to be much bigger, but I probably wouldn't want to use it if it meant I had to get a subscription with them (not from the jump at least).

My understanding is that their tool is open source. However, looking at their website, I have not been able to differentiate which features are exclusive their cloud services vs their open source offering.

So, with all in mind, my question is:

Is it possible to use Serverless without using Serverless Cloud?

...

ANSWER

Answered 2021-Nov-01 at 20:59

Serverless Cloud is a SaaS product that Serverless Inc created and owns. It's in public beta right now (unclear about pricing). It helps you build, deploy, and run Serverless applications without worrying about AWS.

Serverless Framework is an open source project that Serverless Inc also maintains. It's free to use, but requires your own AWS account to run.

You're looking at two different products from the same company - one is free and open source, the other is not. That's the difference. It's totally possible to use Serverless Framework without using Serverless Cloud.

(disclosure: I previously worked at Serverless Inc and have worked on both things)

Source https://stackoverflow.com/questions/69800948

QUESTION

how to find centre value of a contiguous set of booleans

Asked 2021-Apr-20 at 07:21

I have some simplified code below. I want to find the centre dict key for the True values. In the simple set of values res I think I could find the midpoint but I don't have a clue how to do that for a more disparate set of results res2.

Code for res

...

ANSWER

Answered 2021-Apr-20 at 07:21

For what I can understand, this is a possible solution, to be tested with more input data and expected results:

Source https://stackoverflow.com/questions/67173813

QUESTION

Middy with TypeScript, callback type

Asked 2020-Nov-12 at 03:43

I'm trying to use TyepScript witn Middy on a Lambda API call. Part of my code:

...

ANSWER

Answered 2020-Nov-12 at 03:43

The problem is the 2nd argument is supposed to be Context type in its signature instead of the callback.

Since context is required so you just set context and callback as 2nd, 3rd argument respectively as following:

Source https://stackoverflow.com/questions/64797012

QUESTION

AWS Lambda - PDF Uploads to S3 return blank pages

Asked 2020-Oct-25 at 02:53

I'm looking to upload a PDF statement that contains some pages of data however the PDF uploaded to S3 has been returning blank pages. It seems most of the solutions seem to revolve around converting the Buffer type to base64, I've tried that and I'd get a blank PDF.

I've manually added the binary media type on API Gateway multipart/form-data and it still results in a blank pdf.

How can I ensure the pdf is not a blank?

...

ANSWER

Answered 2020-Oct-25 at 02:53

Turns out it was adding the binary media type multipart/form-data on API Gateway, this had to be deployed and it took a while before the change took effect, and now I no longer get blank PDFs :).

Source https://stackoverflow.com/questions/64515356

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install middy

To install middy, you can use NPM:.

Support

The following middlewares are created and maintained outside this project. We cannot guarantee for its functionality. If your middleware is missing, feel free to open a Pull Request.

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