aws-sigv4-headers

Implements AWS Requests with Signature Version 4. Saves you from the pain of using the AWS SDK.

Keep in mind this has only been tested with API Gateway and S3.

install

npm install --save aws-sigv4-headers

usage

// .config.js
// make sure you add this file to .gitignore
module.exports {
  "aws_access_key_id": "",
  "aws_secret_access_key": "",
  "region": ""
}

node.js example

const https = require('https')
const fs = require('fs')
const getHeaders = require('aws-sigv4-headers')
const config = require('./config')
const headers = getHeaders(config, {
  params.service = 'apigateway' // or 's3'
  params.canonicalURI = `/restapis/${restApiId}/stages/${stage}/exports/swagger`
})

const options = {
  method: 'get',
  path: params.canonicalURI,
  host: headers.host,
  headers: headers
}

const fetchSwaggerExport = (options, callback) => {
  https.get(options, res => {
    let out = ''

    res.on('data', data => {
      data = data.toString()
      if (res.statusCode === 403) return callback(JSON.parse(data))
      out += data
    })

    res.on('end', () => callback(null, JSON.parse(out)))
  }).on('error', err => callback(err))
}

fetchSwaggerExport(options, (err, swag) => {
  if (err) return console.error(err)
  console.log(swag) // -> { "swagger": "2.0", ... }
})

browser

for the browser, you can use the xhr library instead of the node https module.