In my previous blog post on using AWS CloudFormation to provision a Centos based environment I mentioned how at first the JSON syntax used within CloudFormation templates can be a little daunting, especially for people with limited scripting experience.
At the time of writing the blog I was using a combination of Notepad++ with the JSON Viewer Plug-In to create and maintain my CloudFormation templates. One of the problems I had with this approach was that the templates are treated as pretty basic text files by Notepad++ and the JSON Viewer Plug-In only checks the base JSON syntax, so there is no validation of the objects defined in the JSON to ensure that the correct properties are being creating to allow the template to form a valid CloudFormation stack.
As an early Christmas present to anyone working with CloudFormation AWS recently announced the introduction of a new CloudFormation editor as part of the AWS Toolkits for Visual Studio and Eclipse. I have now had a chance to download and experiment with the Visual Studio version of this and am really impressed with how much easier it makes the creation and maintenance of CloudFormation templates.
As a .Net developer I have grown used to regularly relying upon IntelliSense features to aid with code creation, particularly when it comes to accessing and updating object properties. The CloudFormation editor provides this for the objects defined within a template as well as code snippets for all the object types you might want to define within your template. This greatly reduces the number of errors caused by ‘finger problems’ that used to occur when creating a template by hand.
The other really useful feature of the editor is the ability to estimate the costs of a stack before creating it. In the past when quoting for customers we have tended to pull together a design, plug the figures into the AWS Simple Monthly Calculator and then once we have received the go ahead provision the environment. With the ability to create costs from a template we are now looking at generating a base template at the design phase and then costing and building from this, which should help with the speed of environment creation and clarity around the prices for altering the design.
Based on our experiences so far it’s a big thank-you to AWS Santa and his helper elves for the early Christmas present of the CloudFormation Editor and we are all looking forward to further presents from AWS throughout next year :-)