Contribution guide Generate module readme

As per the module design structure, every module in the CARML library requires a ReadMe markdown file documenting the set of deployable resource types, input and output parameters and a set of relevant template references from the official Azure Resource Reference documentation.

The ReadMe generator utility aims to simplify contributing to the CARML library, as it supports creating the module ReadMe markdown file from scratch or updating it.

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Navigation

• Location
• How it works
  • Special case: 'Parameter Usage' section
• How to use it

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Location

You can find the script under /utilities/tools/Set-ModuleReadMe.ps1

How it works

1. Using the provided template path, the script first converts it to ARM/JSON if necessary (i.e., if a path to a Bicep file was provided)
2. If the intended readMe file does not yet exist in the expected path, it is generated with a skeleton (with e.g., a generated header name)
3. The script then goes through all sections defined as SectionsToRefresh (by default all) and refreshes the sections' content (for example, for the Parameters) based on the values in the ARM/JSON Template. It detects sections by their header and always regenerates the full section.
4. Once all are refreshed, the current ReadMe file is overwritten. Note: The script can be invoked combining the WhatIf and Verbose switches to just receive an console-output of the updated content.

Special case: 'Parameter Usage' section

The Parameter Usage examples are located just beneath the Parameters table. They are intended to show how to use complex objects/arrays that can be leveraged as parameters, excluding the child resources' parameters, since they have their own readMe files.

For the most part, this section is to be populated manually. However, for a specific set of common parameters, we automatically add their example to the readMe if the parameter exists in the template. At the time of this writing these are:

• Private Endpoints
• Role Assignments
• Tags
• User Assigned Identities

To change this list with minimum effort, the script reads the content from markdown files in the folder of utilities/tools/moduleReadMeSource, and matches their title to the parameters of the template file. If a match is found, it's content is added to the readme alongside the generated header. This means, if you want to add another case, you just need to add a new file to the moduleReadMeSource folder and follow the naming pattern resourceUsage-<parameterName>.md.

For example, the content of the resourceUsage-roleAssignments.md file in the moduleReadMeSource folder is added to a template's readMe if it contains a roleAssignments parameter. The combined result is:

### Parameter Usage: `roleAssignments`

<[resourceUsage-roleAssignments.md] file content>

How to use it

For details on how to use the function, please refer to the script's local documentation.

Note: The script must be loaded ('dot-sourced') before the function can be invoked.