66 lines
1.9 KiB
PowerShell
66 lines
1.9 KiB
PowerShell
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param(
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[string]$TemplatePath = 'D:\project\deployment\alertmanager\alertmanager.yml',
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[string]$OutputPath,
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[string]$EnvFilePath = ''
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)
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$ErrorActionPreference = 'Stop'
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if ([string]::IsNullOrWhiteSpace($OutputPath)) {
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throw 'OutputPath is required'
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}
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if (-not (Test-Path $TemplatePath)) {
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throw "template not found: $TemplatePath"
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}
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if (-not [string]::IsNullOrWhiteSpace($EnvFilePath)) {
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if (-not (Test-Path $EnvFilePath)) {
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throw "env file not found: $EnvFilePath"
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}
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Get-Content $EnvFilePath -Encoding UTF8 | ForEach-Object {
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$line = $_.Trim()
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if ($line -eq '' -or $line.StartsWith('#')) {
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return
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}
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$parts = $line -split '=', 2
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if ($parts.Count -ne 2) {
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throw "invalid env line: $line"
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}
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[Environment]::SetEnvironmentVariable($parts[0].Trim(), $parts[1].Trim(), 'Process')
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}
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}
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$content = Get-Content $TemplatePath -Raw -Encoding UTF8
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$matches = [regex]::Matches($content, '\$\{(?<name>[A-Z0-9_]+)\}')
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$variables = @($matches | ForEach-Object { $_.Groups['name'].Value } | Sort-Object -Unique)
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$missing = @()
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foreach ($name in $variables) {
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$value = [Environment]::GetEnvironmentVariable($name, 'Process')
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if ([string]::IsNullOrWhiteSpace($value)) {
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$missing += $name
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continue
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}
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$escapedToken = [regex]::Escape('${' + $name + '}')
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$escapedValue = $value -replace '\\', '\\'
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$content = [regex]::Replace($content, $escapedToken, [System.Text.RegularExpressions.MatchEvaluator]{ param($m) $value })
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}
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if ($missing.Count -gt 0) {
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throw "missing required alertmanager environment variables: $($missing -join ', ')"
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}
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if ($content -match '\$\{[A-Z0-9_]+\}') {
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throw 'rendered alertmanager config still contains unresolved placeholders'
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}
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$outputDir = Split-Path $OutputPath -Parent
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if (-not [string]::IsNullOrWhiteSpace($outputDir)) {
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New-Item -ItemType Directory -Force $outputDir | Out-Null
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}
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Set-Content -Path $OutputPath -Value $content -Encoding UTF8
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Get-Content $OutputPath
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