AzStackHciConnectivity/AzStackHci.Connectivity.psm1

<#############################################################
 # #
 # Copyright (C) Microsoft Corporation. All rights reserved. #
 # #
 #############################################################>


Import-Module $PSScriptRoot\AzStackHci.Connectivity.Helpers.psm1 -Force -DisableNameChecking -Global
Import-Module $PSScriptRoot\..\AzStackHci.EnvironmentChecker.Utilities.psm1 -Force -DisableNameChecking -Global
Import-Module $PSScriptRoot\..\AzStackHci.EnvironmentChecker.Reporting.psm1 -Force -DisableNameChecking -Global
Import-LocalizedData -BindingVariable lcTxt -FileName AzStackHci.Connectivity.Strings.psd1
function Invoke-AzStackHciConnectivityValidation
{
    <#
    .SYNOPSIS
        Perform AzStackHci Network Validation
    .DESCRIPTION
        Perform AzStackHci Network Validation against a mandatory set of endpoints.
    .EXAMPLE
        PS C:\> Invoke-AzStackHciConnectivityValidation
        Perform network validation against all built in service targets from localhost.
    .EXAMPLE
        PS C:\> $Credential = Get-Credential -Message "Credential for local cluster"
        PS C:\> Invoke-AzStackHciConnectivityValidation -Credential $Credential
        Perform network validation against all built in service targets from all cluster nodes of local system.
    .EXAMPLE
        PS C:\> Invoke-AzStackHciConnectivityValidation -Service 'Azure Kubernetes Service'
        Perform network validation against all mandatory targets and Azure Kubernetes targets from localhost.
    .EXAMPLE
        PS C:\> Invoke-AzStackHciConnectivityValidation -Include 'Windows Admin Center','Windows Admin Center in Azure Portal'
        Perform network validation against all mandatory targets, Windows Admin Center targets and Windows Admin Center in Azure Portal targets from localhost.
    .EXAMPLE
        PS C:\> Invoke-AzStackHciConnectivityValidation -Exclude 'Qualys','Arc For Servers'
        Perform network validation against all targets excluding Qualys & Arc for Servers from localhost.
    .EXAMPLE
        PS C:\> $Credential = Get-Credential -Message "Credential for $RemoteSystem"
        PS C:\> $RemoteSystemSession = New-PSSession -Computer 10.0.0.4 -Credential $Credential
        PS C:\> Invoke-AzStackHciConnectivityValidation -PsSession $RemoteSystemSession
        Perform network validation against all built in service target from pre-existing remote PS session.
    .EXAMPLE
        PS C:\> $RemoteSystem = 'node01.contoso.com'
        PS C:\> $Credential = Get-Credential -Message "Credential for $RemoteSystem"
        PS C:\> Invoke-AzStackHciConnectivityValidation -ComputerName $RemoteSystem -Credential $Credential
        Perform network validation against all built in service target from a remote system.
    .PARAMETER PsSession
        Specify the PsSession(s) used to validation from. If null the local machine will be used.
    .PARAMETER Service
        Specify the services to target for connectivity validation. (Aliases: Include)
    .PARAMETER OperationType
        Specify the Operation Type to target for connectivity validation. e.g. Deployment, Update, etc.
    .PARAMETER Exclude
        Specify the services to exclude for connectivity validation.
    .PARAMETER Proxy
        Specify proxy server.
    .PARAMETER ProxyCredential
        Specify proxy server credential.
    .PARAMETER PassThru
        Return PSObject result.
    .PARAMETER OutputPath
        Directory path for log and report output.
    .PARAMETER CleanReport
        Remove all previous progress and create a clean report.
    .INPUTS
        Inputs (if any)
    .OUTPUTS
        Output (if any)
    .LINK
        https://docs.microsoft.com/en-us/azure-stack/hci/manage/use-environment-checker?tabs=connectivity
    .NOTES
        Mandatory Targets are always invoked, unless explicitly excluded. Use Get-AzStackHciConnectivityTarget | Select Service, Title, Mandatory, Endpoint for more information.
        File-based exclusions can be made by creating a file exlcudetests.txt in the root modules root folder (e.g. PSModulePath\AzStackHci.EnvironmentChecker\<version>).
        This file can support multiple exclusions for all validators e.g.
        --Start sample--
        Test-Processor
        Observability
        microsoftonline
        --End sample--
        This file would have the following affect. After any include/exclude filtering from the parameter inputs:
        Invoke-AzStackHciHardwareValidation would exclude Test-Processor in its tests
        Invoke-AzStackHciConnectivityValidation would exclude the Observability service AND any service target who's endpoints contains a match for microsoftonline.
    #>

    [CmdletBinding()]
    param (

        [Parameter(Mandatory = $false, HelpMessage = "Specify the PsSession(s) used to validation from. If null the local machine will be used.")]
        [System.Management.Automation.Runspaces.PSSession[]]
        $PsSession,

        [Parameter(Mandatory = $false, HelpMessage = "Specify the services to target for connectivity validation.")]
        [ArgumentCompleter({ Get-AzStackHciConnectivityServiceName })]
        [ValidateScript({ $_ -in (Get-AzStackHciConnectivityServiceName) })]
        [Alias("Include")]
        [string[]]
        $Service,

        [Parameter(Mandatory = $false, HelpMessage = "Specify the Operation Type to target for connectivity validation. e.g. Deployment, Update, etc...")]
        [ArgumentCompleter({ Get-AzStackHciConnectivityOperationName })]
        [ValidateScript({ $_ -in (Get-AzStackHciConnectivityOperationName) })]
        [string[]]
        $OperationType,

        [Parameter(Mandatory = $false, HelpMessage = "Specify the services to exclude for connectivity validation.")]
        [ArgumentCompleter({ Get-AzStackHciConnectivityServiceName })]
        [ValidateScript({ $_ -in (Get-AzStackHciConnectivityServiceName) })]
        [string[]]
        $Exclude,

        [Parameter(Mandatory = $false, HelpMessage = "Specify proxy server.")]
        [string]
        $Proxy,

        [Parameter(Mandatory = $false, HelpMessage = "Specify proxy server credential.")]
        [pscredential]
        $ProxyCredential,

        [Parameter(Mandatory = $false, HelpMessage = "Return PSObject result.")]
        [switch]
        $PassThru,

        [Parameter(Mandatory = $false, HelpMessage = "Directory path for log and report output")]
        [string]$OutputPath,

        [Parameter(Mandatory = $false, HelpMessage = "Remove all previous progress and create a clean report")]
        [switch]$CleanReport = $false

    )

    try
    {
        $script:ErrorActionPreference = 'Stop'
        Set-AzStackHciOutputPath -Path $OutputPath

        Write-AzStackHciHeader -invocation $MyInvocation -params $PSBoundParameters -PassThru:$PassThru
        Test-ModuleUpdate -PassThru:$PassThru

        # Call/Initialise reporting
        $envcheckerReport = Get-AzStackHciEnvProgress -clean:$CleanReport
        $envcheckerReport = Add-AzStackHciEnvJob -report $envcheckerReport

        # TO DO: Omit system?
        $ConnectivityTargets = Get-AzStackHciConnectivityTarget -Service $Service -OperationType $OperationType
        $ConnectivityTargets = Select-AzStackHciConnectivityTarget -Targets $ConnectivityTargets -Exclude $Exclude
        Write-Progress -Id 1 -Activity "Checking AzStackHci Dependancies" -Status "Environment configuration" -PercentComplete 0 -ErrorAction SilentlyContinue

        # Run validation
        $i = 0
        $webResult = @()
        $diagnosticResults = @()
        if ($PsSession)
        {
            foreach ($Session in $PsSession)
            {
                if ($Session.State -ne 'Opened')
                {
                    try
                    {
                        Connect-PSSession -Session $Session
                    }
                    catch
                    {
                        $PsSessionFail = $lcTxt.PsSessionFail -f $Session.ComputerName, $_.Exception.Message
                        Log-Info ($PsSessionFail) -type Error
                        throw $PsSessionFail
                    }
                }
                $diagnosticResults += Test-Dns -PsSession $Session
                # DNS must succeed when user doesn't specify a proxy.
                # If user specifies proxy, we will continue with other diagnostic tests and
                # lower the severity of the dns test, because external resolution could be done by proxy.
                if ($diagnosticResults[-1].Status -ne 'Succeeded')
                {
                    if ([string]::IsNullOrEmpty($PSBoundParameters['Proxy']))
                    {
                        throw ($lcTxt.DnsFail -f $Session.ComputerName, ($diagnosticResults[-1].AdditionalData.Detail -join "`r`n"))
                    }
                    else
                    {
                        Log-Info ($lcTxt.DnsDowngrade -f $Session.ComputerName) -Type Warning
                        $diagnosticResults[-1].Severity = 'Warning'
                    }
                }

                # Collect proxy info before TLS inspection probe.
                $diagnosticResults += Get-ProxyDiagnostics -PsSession $Session -Proxy $Proxy
                $diagnosticResults += Test-RootCA -PsSession $Session -Proxy $Proxy -ProxyCredential $ProxyCredential
                if (($diagnosticResults | Where-Object Severity -eq Critical).Status -contains 'Failed')
                {
                    $failedDiagnosticResult = $diagnosticResults | Where-Object {$_.Status -EQ 'Failed' -and $_.Severity -eq 'Critical'} | Format-List | Out-String
                    $failedDiagnosticDetailMsg = ($diagnosticResults | Where-Object {$_.Status -EQ 'Failed' -and $_.Severity -eq 'Critical'} | Select-Object -ExpandProperty AdditionalData | Select-Object -ExpandProperty Detail) -join "`r`n"
                    throw $lcTxt.DiagnosticSystemFailure -f $failedDiagnosticDetailMsg, $failedDiagnosticResult
                }

                # Run connectivity tests
                foreach ($Target in $ConnectivityTargets)
                {
                    $i++
                    $progressPercentage = ($i / (($ConnectivityTargets.Count) * $PsSession.Count )) * 100
                    Write-Progress -Id 1 -Activity "Checking AzStackHci dependencies to $($Target.Service)" -Status "Connectivity from $($Session.ComputerName) to $($Target.Title) Endpoints" -PercentComplete $progressPercentage -ErrorAction SilentlyContinue
                    Log-Info -Message ("Checking {0} on {1}" -f $target.Title, $session.ComputerName)
                    $webResult += Invoke-WebRequestEx -Target $Target -PsSession $Session -Proxy $Proxy -ProxyCredential $ProxyCredential

                }
            }
        }
        else
        {
            $diagnosticResults += Test-Dns
            # DNS must succeed when user doesn't specify proxy.
            # If user specifies proxy, we will continue with other diagnostic tests and
            # lower the severity of the dns test, because external resolution could be done by proxy.
            if ($diagnosticResults[-1].Status -ne 'Succeeded')
            {
                if ([string]::IsNullOrEmpty($PSBoundParameters['Proxy']))
                {
                    throw ($lcTxt.DnsFail -f $ENV:COMPUTERNAME, ($diagnosticResults[-1].AdditionalData.Detail -join "`r`n"))
                }
                else
                {
                    Log-Info ($lcTxt.DnsDowngrade -f $ENV:COMPUTERNAME) -Type Warning
                    $diagnosticResults[-1].Severity = 'Warning'
                }
            }
            $diagnosticResults += Get-ProxyDiagnostics -Proxy $Proxy
            $diagnosticResults += Test-RootCA -Proxy $Proxy -ProxyCredential $ProxyCredential
            if (($diagnosticResults | Where-Object Severity -eq Critical).Status -contains 'Failed')
            {
                $failedDiagnosticResult = $diagnosticResults | Where-Object {$_.Status -EQ 'Failed' -and $_.Severity -eq 'Critical'} | Format-List | Out-String
                $failedDiagnosticDetailMsg = ($diagnosticResults | Where-Object {$_.Status -EQ 'Failed' -and $_.Severity -eq 'Critical'} | Select-Object -ExpandProperty AdditionalData | Select-Object -ExpandProperty Detail) -join "`r`n"
                throw $lcTxt.DiagnosticSystemFailure -f $failedDiagnosticDetailMsg, $failedDiagnosticResult
            }
            foreach ($Target in $ConnectivityTargets)
            {
                $i++
                $progressPercentage = ($i / ($ConnectivityTargets.Count)) * 100
                $progressParams = @{
                    Id              = 1
                    Activity        = "Checking AzStackHci dependencies to $($Target.Service)"
                    Status          = if ($Proxy) { "Connectivity from $ENV:ComputerName (via $Proxy) to $($Target.Title) Endpoints" } else { "Connectivity from $ENV:ComputerName to $($Target.Title) Endpoints" }
                    PercentComplete = $progressPercentage
                    ErrorAction     = 'SilentlyContinue'
                }
                Write-Progress @progressParams
                Log-Info -Message ("Checking {0} (proxy:'{1}')" -f $target.Title, $proxy)
                $webResult += Invoke-WebRequestEx -Target $Target -Proxy $Proxy -ProxyCredential $ProxyCredential
            }
        }

        # Feedback results - user scenario
        if (-not $PassThru)
        {
            Write-Host 'Connectivity Results'
            $printed = @()
            $targetServices = $webresult.service | Sort-Object | Get-Unique | Where-Object { $PSITEM -ne 'System' }
            Foreach ($targetService in $targetServices) {
                $thisResult = $webResult | Where-Object { $PSITEM -notin $printed -and $_.Service -EQ $targetService }
                Write-AzStackHciResult -Title $targetService -Result $thisResult
                $printed += $webResult | Where-Object Service -EQ $targetService
            }
            Write-AzStackHciResult -Title 'Diagnostics' -Result $diagnosticResults -Expand
            Write-Summary -Result $webResult -Property1 Source -Property2 Resource
            Write-FailedUrls -Result $webResult
        }
    }
    catch
    {
        Log-Info -Message "" -ConsoleOut
        Log-Info -Message "$($_.Exception.Message)" -ConsoleOut -Type Error
        Log-Info -Message "$($_.ScriptStackTrace)" -ConsoleOut -Type Error
        $cmdletFailed = $true
        throw $_.exception
    }
    finally
    {
        $Script:ErrorActionPreference = 'SilentlyContinue'
        # Write result to telemetry channel
        foreach ($r in ($webResult + $diagnosticResults))
        {
            Write-ETWResult -Result $r
        }
        # Write validation result to report object and close out report
        $envcheckerReport | Add-Member -MemberType NoteProperty -Name 'Connectivity' -Value $webResult -Force
        $envcheckerReport | Add-Member -MemberType NoteProperty -Name 'Diagnostics' -Value $diagnosticResults -Force
        $envcheckerReport = Close-AzStackHciEnvJob -report $envcheckerReport
        Write-AzStackHciEnvReport -report $envcheckerReport
        Write-AzStackHciFooter -invocation $MyInvocation -Failed:$cmdletFailed -PassThru:$PassThru
        Remove-Variable -Name AzStackHciConnectivityTargets -Scope GLOBAL -ErrorAction SilentlyContinue
        if ($PassThru)
        {
            Write-Output ($webResult + $diagnosticResults)
        }
    }
}
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