@dazn/lambda-powertools-middleware-stop-infinite-loop

1.29.0 • Public • Published

lambda-powertools-middleware-stop-infinite-loop

A Middy middleware that will stop an invocation if it's deemed to be part of an infinite loop.

Main features:

  • errors if the call-chain-length reaches the configured threshold (defaults to 10)

Getting Started

Install from NPM: npm install @dazn/lambda-powertools-middleware-stop-infinite-loop

API

The middleware accepts an optional constructor parameter threshold, which is the max length allowed for the entire call chain.

This middleware is intended to be used alongside @dazn/lambda-powertools-middleware-correlation-ids, which is responsible for collecting correlation IDs and incrementing the call-chain-length (i.e. the number of function invocations that are chained together) at the start of an invocation.

Because this middleware relies on @dazn/lambda-powertools-middleware-correlation-ids, it needs to be applied AFTER @dazn/lambda-powertools-middleware-correlation-ids (as seen below).

const middy = require('middy')
const correlationIds = require('@dazn/lambda-powertools-middleware-correlation-ids')
const stopInfiniteLoop = require('@dazn/lambda-powertools-middleware-stop-infinite-loop')

const handler = async (event, context) => {
  return 42
}

module.exports = middy(handler)
  .use(correlationIds())
  .use(stopInfiniteLoop()) // defaults to 10
}

Readme

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Install

npm i @dazn/lambda-powertools-middleware-stop-infinite-loop

Weekly Downloads

162

Version

1.29.0

License

MIT

Unpacked Size

10.1 kB

Total Files

6

Last publish

Collaborators

  • gideonparanoid
  • davidrv87
  • gabriela_nowicka
  • dazn.builder.frontend
  • automation-drone
  • m.bazalik
  • dazn.oss.lambda.powertools