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lovelysandwichlovelysandwich
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Refactor how Computed values are calculated. (#44)
# Pull Request ## Issue #40 ## Description The previous implementation had computed calculations happening in several places, that was quite bad(tm). Making the calculation of 'Computed' values it's own step after values are calculated making things easier to test. ## License By submitting this pull request, I confirm that my contribution is made under the terms of the projects associated license.
1 parent 9b2aa2a commit 7205552

8 files changed

+200
-302
lines changed

‎src/ALZ/Private/Build-ALZDeploymentEnvFile.ps1

-4
Original file line numberDiff line numberDiff line change
@@ -26,10 +26,6 @@ function Build-ALZDeploymentEnvFile {
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if ($target.Destination -eq "Environment") {
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$formattedValue = $configurationValue.Value.Value
29-
if ($configurationValue.Value.Type -eq "Computed") {
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$formattedValue = Format-TokenizedConfigurationString -tokenizedString $configurationValue.Value.Value -configuration $configuration
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}
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Add-Content -Path $envFile -Value "$($($target.Name))=`"$formattedValue`"" | Out-String | Write-Verbose
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}
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}

‎src/ALZ/Private/Edit-ALZConfigurationFilesInPlace.ps1

+1-31
Original file line numberDiff line numberDiff line change
@@ -64,37 +64,7 @@ function Edit-ALZConfigurationFilesInPlace {
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# If we're here, we can modify this file and we've got an actual object specified by the Name path value - and we can modify values on it.
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if ($target.Destination -eq "Parameters" -and $null -ne $bicepConfigNode) {
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$leafPropertyName = $propertyNames[-1]
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if ($configKey.Value.Type -eq "Computed") {
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# If the value type is computed we replace the value with another which already exists in the configuration hierarchy.
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if ($configKey.Value.Value -is [array]) {
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$formattedValues = @()
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foreach($formatString in $configKey.Value.Value) {
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$formattedValues += Format-TokenizedConfigurationString -tokenizedString $formatString -configuration $configuration
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}
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if ($null -ne $configKey.Value.Process) {
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$scriptBlock = [ScriptBlock]::Create($configKey.Value.Process)
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$formattedValues = Invoke-Command -ScriptBlock $scriptBlock -ArgumentList $formattedValues
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$formattedValues = @($formattedValues)
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}
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$bicepConfigNode[$leafPropertyName] = $formattedValues
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} else {
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$formattedValue = Format-TokenizedConfigurationString -tokenizedString $configKey.Value.Value -configuration $configuration
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if ($null -ne $configKey.Value.Process) {
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$scriptBlock = [ScriptBlock]::Create($configKey.Value.Process)
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$formattedValue = Invoke-Command -ScriptBlock $scriptBlock -ArgumentList $formattedValue
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}
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$bicepConfigNode[$leafPropertyName] = $formattedValue
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}
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} else {
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$bicepConfigNode[$leafPropertyName] = $configKey.Value.Value
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}
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67+
$bicepConfigNode[$leafPropertyName] = $configKey.Value.Value
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$modified = $true
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}
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}

‎src/ALZ/Private/New-ALZDirectoryEnvironment.ps1

-1
Original file line numberDiff line numberDiff line change
@@ -18,5 +18,4 @@ function New-ALZDirectoryEnvironment {
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New-Item -ItemType Directory -Path $config -Force | Out-String | Write-Verbose
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New-Item -ItemType Directory -Path $upstream -Force | Out-String | Write-Verbose
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New-Item -ItemType Directory -Path $configModules -Force | Out-String | Write-Verbose
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}

‎src/ALZ/Private/Set-ComputedConfiguration.ps1

+41
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,41 @@
1+
# If the value type is computed we replace the value with another which already exists in the configuration hierarchy.
2+
function Set-ComputedConfiguration {
3+
[CmdletBinding(SupportsShouldProcess = $true)]
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param (
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[Parameter(Mandatory = $true)]
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[PSCustomObject] $configuration
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)
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if ($PSCmdlet.ShouldProcess("ALZ-Bicep computed configuration.", "calculate computed values")) {
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foreach ($configKey in $configuration.PsObject.Properties) {
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if ($configKey.Value.Type -ne "Computed") {
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continue;
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}
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15+
if ($configKey.Value.Value -is [array]) {
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$formattedValues = @()
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foreach($formatString in $configKey.Value.Value) {
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$formattedValues += Format-TokenizedConfigurationString -tokenizedString $formatString -configuration $configuration
19+
}
20+
21+
if ($null -ne $configKey.Value.Process) {
22+
$scriptBlock = [ScriptBlock]::Create($configKey.Value.Process)
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$formattedValues = Invoke-Command -ScriptBlock $scriptBlock -ArgumentList $formattedValues
24+
$formattedValues = @($formattedValues)
25+
}
26+
27+
$configKey.Value.Value = $formattedValues
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} else {
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30+
$formattedValue = Format-TokenizedConfigurationString -tokenizedString $configKey.Value.Value -configuration $configuration
31+
32+
if ($null -ne $configKey.Value.Process) {
33+
$scriptBlock = [ScriptBlock]::Create($configKey.Value.Process)
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$formattedValue = Invoke-Command -ScriptBlock $scriptBlock -ArgumentList $formattedValue
35+
}
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37+
$configKey.Value.Value = $formattedValue
38+
}
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}
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}
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}

‎src/ALZ/Public/New-ALZEnvironment.ps1

+2-1
Original file line numberDiff line numberDiff line change
@@ -54,13 +54,14 @@ function New-ALZEnvironment {
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$alzEnvironmentDestinationInternalCode = Join-Path $alzEnvironmentDestination "upstream-releases"
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5656
Get-ALZGithubRelease -directoryForReleases $alzEnvironmentDestinationInternalCode -githubRepoUrl $bicepConfig.module_url -releases @($bicepConfig.version) | Out-String | Write-Verbose
57-
57+
5858
Write-InformationColored "Copying ALZ-Bicep module to $alzEnvironmentDestinationInternalCode" -ForegroundColor Green -InformationAction Continue
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Copy-ALZParametersFile -alzEnvironmentDestination $alzEnvironmentDestination -upstreamReleaseDirectory $(Join-Path $alzEnvironmentDestinationInternalCode $bicepConfig.version) -configFiles $bicepConfig.config_files | Out-String | Write-Verbose
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Write-InformationColored "ALZ-Bicep source directory: $alzBicepSourceDirectory" -ForegroundColor Green -InformationAction Continue
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6262
$configuration = Request-ALZEnvironmentConfig -configurationParameters $bicepConfig.parameters
6363

64+
Set-ComputedConfiguration -configuration $configuration | Out-String | Write-Verbose
6465
Edit-ALZConfigurationFilesInPlace -alzEnvironmentDestination $alzEnvironmentDestination -configuration $configuration | Out-String | Write-Verbose
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Build-ALZDeploymentEnvFile -configuration $configuration -Destination $alzEnvironmentDestination | Out-String | Write-Verbose
6667

‎src/Tests/Unit/Private/Build-ALZDeploymentEnvFile.Tests.ps1

-32
Original file line numberDiff line numberDiff line change
@@ -77,38 +77,6 @@ InModuleScope 'ALZ' {
7777
Should -Invoke New-Item -ParameterFilter { $Path -match ".env$" } -Scope It -Times 1 -Exactly
7878
Should -Invoke Add-Content -Scope It -Times 1 -Exactly
7979
}
80-
81-
It 'Handles Computed values correctly and adds to the .env file.' {
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83-
Mock -CommandName New-Item
84-
Mock -CommandName Add-Content
85-
86-
$configuration = [pscustomobject]@{
87-
Setting1 = [pscustomobject]@{
88-
Targets = @(
89-
[pscustomobject]@{
90-
Name = "Setting1"
91-
Destination = "Environment"
92-
})
93-
Value = "Test"
94-
}
95-
Setting2 = [pscustomobject]@{
96-
Targets = @(
97-
[pscustomobject]@{
98-
Name = "Setting2"
99-
Destination = "Environment"
100-
})
101-
Type = "Computed"
102-
Value = "{%Setting1%}"
103-
}
104-
}
105-
106-
Build-ALZDeploymentEnvFile -configuration $configuration -destination "test"
107-
108-
Should -Invoke New-Item -ParameterFilter { $Path -match ".env$" } -Scope It -Times 1 -Exactly
109-
Should -Invoke Add-Content -ParameterFilter { $Value -match "^Setting1=`"Test`"$" } -Scope It -Times 1 -Exactly
110-
Should -Invoke Add-Content -ParameterFilter { $Value -match "^Setting2=`"Test`"$" } -Scope It -Times 1 -Exactly
111-
}
11280
}
11381
}
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}

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