toshke

#!/usr/bin/env bash
for f in *.yaml; do
  printf "Check ${f}..."
  aws cloudformation validate-template --template-body "file://${f}" > /dev/null 2>&1
  if [ "$?" != "0" ]; then
    echo "\n${f} failed, run following for details"
    echo "   aws cloudformation validate-template --template-body file://${f}\n\n"
    exit 1
  fi
  printf " [OK]\n"

toshke

pushed = 0
namespace = 'my cw space'
while pushed < len(metric_data):
  left = pushed
  if len(metric_data) - pushed >= 20:
    right = left + 20
  else:
    right = len(metric_data)
  pushed += (right - left)
  to_push = metric_data[left:right]

toshke

{
  "ap-northeast-1": "Asia Pacific (Tokyo)",
  "ap-northeast-2": "Asia Pacific (Seoul)",
  "ap-southeast-1": "Asia Pacific (Singapore)",
  "ap-southeast-2": "Asia Pacific (Sydney)",
  "ap-south-1": "Asia Pacific (Mumbai)",
  "eu-central-1": "EU (Frankfurt)",
  "eu-north-1": "Europe (Stockholm)",
  "eu-west-1": "EU (Ireland)",
  "eu-west-2": "Europe (London)",

toshke

function isolate_binary() {
  binary=$(which $1)
  libs=$(ldd -v $binary | grep -o '/.*[[:space:]]')
  libs=($libs)
  mkdir -p ${2}$(dirname $binary)
  cp -vn ${binary} ${2}${binary}
  for l in "${libs[@]}"; do mkdir -p ${2}$(dirname $l) && cp -vn ${l} ${2}${l}; done
}

toshke

import logging
import json

def handler(payload, context):
  try: 
      response = CustomResourceResponse(payload)
      # follow rule 2 - alway log the paylod
      logging.info(json.dumps(payload))

      ## TODO: handle request from CFN

toshke

def get_physical_id(r_properties):
  """ Generated resource id """
  bucket = r_properties['Bucket']
  key = r_properties['Key']
  return f's3://{bucket}/{key}'

def cr_handler(event, context):
    """
    Create, Update or Remove S3 object
    as Custom Resource for AWS CloudFormation

toshke

physical_id = get_physical_id(event)
if request_type == 'Create' or request_type == 'Update:
  if resource_exists(physical_id):
    print(f'{physical_id} will be overwritten') 
  create_resource()
  response.success(physical_id)

toshke

Parameters:
  DeployCustomResource:
    Type: String
    Default: false
    AllowedValues: [true, false]
Conditions:
  DeployCustomResource: !Equals [ !Ref DeployCustomResource, 'true' ]
Resources:
  # .. other definitions including backing lambda
  MyCustomResource:

toshke

import json
def handler(event, payload):
    print(json.dumps(event))

toshke

import logging
from urllib.request import urlopen, Request, HTTPError, URLError
import json

logger = logging.getLogger()

class CustomResourceResponse:
    def __init__(self, event):
        self.event = event
        self.response = {