Chris Kuech chriskuech

## deploy.sh
#!/bin/bash

# ensure there are no uncommitted changes
git diff-index --quiet HEAD -- || { echo "Untracked changes" >&2; exit 1; }

# derive variables
branch="$(git symbolic-ref --short HEAD)"
timestamp="$(date +%Y%m%dT%H%M%S)"

# do work on a separate branch

## Export-PfxToBase64ps1
##
# Export PFX from Windows as Base64 string without password
#

$thumbprint = ""
[Convert]::ToBase64String((Get-Item Cert:\CurrentUser\My\$thumbprint).Export("pkcs12"))

## defensive-powershell-2.ps1
# declarative
[ValidateRange(0, 10)]
[int]$n = Read-Host

# imperative
[int]$n = Read-Host
if ($n -lt 0 -or $n -gt 10) {
  throw [IndexOutOfRangeException]::new()
}

## defensive-powershell-1.ps1
$ErrorActionPreference = "Stop"

## defensive-powershell-3.ps1
[AttributeName("param1", "param2")] $value

## defensive-powershell-4.ps1
[AttributeName("param1", "param2")]
$name = "value"

## defensive-powershell-5.ps1
[ValidateSet("ca", "eu", "us")]
$region = Read-Host

## defensive-powershell-6.ps1
function Deploy-Cluster {
  Param(
    [Parameter(Mandatory)]
    [ValidatePattern("^[a-z]+-[a-z]+-[a-z]+-[0-9]+$")]
    [string] $ClusterId
  )
...

## defensive-powershell-7.ps1
class Cluster {
  [ValidatePattern("^[a-z]+$")]
  [string] $Service
  [ValidateSet("TEST", "STAGE", "CANARY", "PROD")]
  [string] $FlightingRing
  [ValidateSet("eastus", "westus", "northeurope")]
  [string] $Region
  [ValidateRange(0, 255)]
  [int] $Index
}

## defensive-powershell-8.ps1
function Get-Cluster {
  [OutputType([Cluster])
  Param(
    [ValidateNotNullOrEmpty()]
    [string[]] $serviceIds
  )

  $serviceIds | ForEach-Object {
    $service, $flightingRing, $region, $idx = $_ -split "-"
    [Cluster]@{
	#!/bin/bash

	# ensure there are no uncommitted changes
	git diff-index --quiet HEAD -- \|\| { echo "Untracked changes" >&2; exit 1; }

	# derive variables
	branch="$(git symbolic-ref --short HEAD)"
	timestamp="$(date +%Y%m%dT%H%M%S)"

	# do work on a separate branch
	##
	# Export PFX from Windows as Base64 string without password
	#

	$thumbprint = ""
	[Convert]::ToBase64String((Get-Item Cert:\CurrentUser\My\$thumbprint).Export("pkcs12"))
	# declarative
	[ValidateRange(0, 10)]
	[int]$n = Read-Host

	# imperative
	[int]$n = Read-Host
	if ($n -lt 0 -or $n -gt 10) {
	throw [IndexOutOfRangeException]::new()
	}
	function Deploy-Cluster {
	Param(
	[Parameter(Mandatory)]
	[ValidatePattern("^[a-z]+-[a-z]+-[a-z]+-[0-9]+$")]
	[string] $ClusterId
	)
	...
	class Cluster {
	[ValidatePattern("^[a-z]+$")]
	[string] $Service
	[ValidateSet("TEST", "STAGE", "CANARY", "PROD")]
	[string] $FlightingRing
	[ValidateSet("eastus", "westus", "northeurope")]
	[string] $Region
	[ValidateRange(0, 255)]
	[int] $Index
	}
	function Get-Cluster {
	[OutputType([Cluster])
	Param(
	[ValidateNotNullOrEmpty()]
	[string[]] $serviceIds
	)

	$serviceIds \| ForEach-Object {
	$service, $flightingRing, $region, $idx = $_ -split "-"
	[Cluster]@{