Bicep's syntax is already pretty clean, but sometimes you run into situations like needing to concatenate strings or format names repeatedly, doing small calculations based on input parameters, or having long, messy expressions inside resource definitions. Let’s say you want to automatically generate a series of VM names like web-01, web-02, and so on. Without functions, you’d have to write 'web-${padLeft(string(i+1), 2, '0')}' every time, makes you work 996. Let’s see how to make this easier.
I am using highlight.js to render code snippets on this blog system. However, the official pack of highlight.js does not have Bicep as one of the languages. To add support for the Bicep language in highlight.js, you need to implement a Bicep language definition module. Below are the detailed steps and code examples.
Last week at Microsoft Reactor Shanghai, I addressed a speech "Automating Infrastructure as Code (IaC) Deployment with Azure Bicep". One of the demo was how to use Bicep to deploy a complete Azure web app environment, including an App Service and an Azure SQL Database. I know we didn’t have time to walk through the whole script, so I wanted to break it down here in a blog post. Let’s walk through this Bicep file together, and see what each part does!