Switch-TestDeployment.ps1
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function Switch-TestDeployment { <# .Synopsis Switches host entries to test a deployment .Description Toggles the local name resolution for a test domain to and from test host. This lets you preview a deployment before making it live, and allows you to perform automated tests against the deployment. .Example Switch-TestDeployment -HostName "Start-LearningPowerShell.com" -TestHost 03ad2d078dd348cb9eaddfb50a6d8141.cloudapp.net .Link Publish-AzureService #> [OutputType([PSObject])] param( # The public DNS name for the website [Parameter(Mandatory=$true,ValueFromPipelineByPropertyName=$true)] [string]$HostName, # The DNS name for the test deployment [Parameter(Mandatory=$true,ValueFromPipelineByPropertyName=$true)] [string]$TestHost ) process { $resolvedTestHost = [Net.Dns]::Resolve("$TestHost").AddressList if (-not $resolvedTestHost) { return } #region Load hosts file and find the change $lines = [IO.fILE]::ReadAllLines("$env:windir\System32\drivers\etc\hosts") $found = $lines | Where-Object { $_ -like "* $hostName*" } #endregion Load hosts file and find the change #region Toggle host file presence if (-not $found) { $newLines = New-Object Collections.ArrayList $null = $newLines.AddRange(@($Lines)) $null = $newLines.Add(@("$resolvedTestHost $hostName")) $output = New-Object PSObject -Property @{ Operation= "Using" } } else { $newLines = $lines | Where-Object { $_ -notlike "* $hostName*" } $output = New-Object PSObject -Property @{ Operation = "No Longer Using" } } #endregion Toggle host file presence #region Rewrite host file $newLines = [string[]]@($newLines) [Io.File]::WriteAllLines("$env:windir\System32\drivers\etc\hosts", $newLines) #endregion Rewrite host file $output | Add-Member NoteProperty TestHostUrl $testHost -PassThru | Add-Member NoteProperty ForHostName $hostName -PassThru } } |