A littple script that fetches VPC releated AWS quotas

aws-vpc-limits.groovy

import groovy.json.JsonSlurper

def regions = ["us-west-1", "us-west-2", "us-east-1", "us-east-2", "eu-west-1"]
def vpcService = 'vpc'
def vpcCode = 'L-F678F1CE'
def natCode = 'L-FE5A380F'
def elasticIpService = 'ec2'
def elasticIpCode = 'L-0263D0A3'

println "Current AWS limits"
println "------------------"
println ""
println "Region: \t VPCs \t NAT Gateways \t VPC Elastic IPs"

regions.each { region ->
  vpcLimit = getLimit(region, vpcService, vpcCode)
  elasticIdLimit = getLimit(region, elasticIpService, elasticIpCode)
  natGatewaysLimit = getLimit(region, vpcService, natCode)

  println "${region} \t ${vpcLimit} \t ${natGatewaysLimit} \t\t ${elasticIdLimit}"
}

BigDecimal getLimit(String region, String service, String code) {
  def command = "aws --region ${region} service-quotas get-service-quota --service-code ${service} --quota-code ${code} --output json"
  proc = command.execute()
  def json = proc.text
  def slurper = new JsonSlurper()
  def result = slurper.parseText(json)
  return result.Quota.Value
}