NetworkValidation/NetworkChecker/NetworkValidationModules/PingTest.psm1

function Invoke-PingTesting {
    <#
        .SYNOPSIS
        From the DVM ip test connectivty using ICMP to P2P's, Switch Mgmt, BMC Mgmt, and Infra.
 
        .EXAMPLE
        Invoke-PingTesting -IpConfigData $IpConfigData -AdapterInfo $AdapterInfo -IpInfo $IpInfo
 
    #>

    [CmdletBinding()]
    param(
        # All the IP data required to deploy AzureStack Network Devices
        [Parameter(mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [System.Array]
        $IpConfigData,

        # Information regarding the vNic used for ping testing
        [Parameter(mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [ciminstance]
        $AdapterInfo,

        # Full IP address information for the vNic
        [Parameter(mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [hashtable]
        $IpInfo,
        
        # OEM
        [Parameter(mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [string]
        $OEM,

        # Routing; BGP or Static
        [Parameter(mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [string]
        $Routing,

        # ExtendedStore True/False
        [Parameter(mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [bool]
        $ExtendedStorage,

        # IsNoBMC
        [Parameter(mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [bool]
        $IsNoBMC,

        # No Uplinks required, if the P2P interfaces do not ping to the Border this is the override to use.
        [bool]
        $NoUplinksRequired


    )

    $orginalProgPref = $Global:ProgressPreference
    $Global:ProgressPreference = 'SilentlyContinue'

    Write-AzsReadinessLog -Message "Performing Ping testing using SourceIP: $($ipInfo.testIPv4Address)"
    
    if ($ExtendedStorage){
        $pingResults = @{
            'pingSuccess' = [System.Collections.ArrayList]@()
            'pingFail'    = [System.Collections.ArrayList]@()
            'border'      = [System.Collections.ArrayList]@()
            'ToBorder' = @{
                'd1' = [System.Collections.ArrayList]@()
                'd2' = [System.Collections.ArrayList]@() 
            }
            'hardFail'    = [System.Collections.ArrayList]@()
            'warning'     = [System.Collections.ArrayList]@()
        }
    } else {
        $pingResults = @{
            'pingSuccess' = [System.Collections.ArrayList]@()
            'pingFail'    = [System.Collections.ArrayList]@()
            'border'      = [System.Collections.ArrayList]@()
            'ToBorder' = @{
                't1' = [System.Collections.ArrayList]@()
                't2' = [System.Collections.ArrayList]@() 
            }
            'hardFail'    = [System.Collections.ArrayList]@()
            'warning'     = [System.Collections.ArrayList]@()
        } 
    }


    $pingData = Get-PingData -OEM $OEM -IpConfigData $IpConfigData -IsNoBMC $IsNoBMC
    foreach ($key in $pingData.keys ) { 
        $pingData.$key | foreach {
            Try {
                #set a route for $_.IPv4Address to public vip
                $null = New-NetRoute -DestinationPrefix "$($_.IPv4Address)/32" -InterfaceIndex ($adapterInfo.ifIndex)  -NextHop ($ipInfo.IPV4Gateway) -routemetric 1 -ErrorAction Stop
            }
            Catch {
                Write-AzsReadinessLog -Message "dvm > Faileded to set a route to $($_.IPv4Address) using gateway $($ipInfo.IPV4Gateway)" -Type 'Error' -ToScreen
                Throw $_.Exception.Message
            }

            $result = Test-Connection -Count 1 -Quiet $_.IPv4Address
            if ($key -match "P2P") {
                $netDeviceString = "P2P($($_.Name)) $($_.IPv4Address)"
            }
            else {
                $netDeviceString = "$key($($_.Name)) $($_.IPv4Address)"
            }
            if ($result) {
                Write-AzsReadinessLog -Message "PASS: (dvm) Ping Success: $netDeviceString" 
                $pingResults.pingSuccess += @( $netDeviceString )
            }
            else {
                $pingResults.pingFail += @( $netDeviceString )

                #error groups
                if ($key -match "ibgp|BMC_To_Rack|CL01-P2P_Rack00/Edge[1-2]_To_Rack01/Tor[1-2]|Tor[1-2]_To_Rack01/BMC") {
                    # hardfail
                    $pingResults.hardFail += @( $netDeviceString )
                    Write-AzsReadinessLog -Message "FAIL: (dvm) Ping Failure: $netDeviceString" -Type 'Error'
                }
                elseif ($key -match "-BMCMgmt|-Infrastructure|-ExtendedStore|-ExtStoreMGMT") {
                    # warning only. Testing has shown not all OEM's operate in the same manner for floating/self IP icmp responses.
                    $pingResults.warning += @( $netDeviceString )
                    Write-AzsReadinessLog -Message "PASS: (dvm) Ping Warning: $netDeviceString" -Type 'Warning' 
                }
                elseif ($key -match "B\d_To_Rack") {
                    #TOR <> Border connections
                    if ($_.Name -match "Rack\d{2}/B\d") {
                        #border
                        $pingResults.border += @( $netDeviceString )
                        Write-AzsReadinessLog -Message "PASS: (dvm) Ping Warning: $netDeviceString" -Type 'Warning' 
                    }
                    if ($ExtendedStorage) {
                        if ($_.Name -match "Rack\d{2}/Edge1") {
                            #tor1
                            $pingResults.ToBorder.d1 += @( $netDeviceString )
                            Write-AzsReadinessLog -Message "Edge1 to Border = $netDeviceString" 
                        }
                        elseif ($_.Name -match "Rack\d{2}/Edge2") {
                            #tor2
                            $pingResults.ToBorder.d2 += @( $netDeviceString )
                            Write-AzsReadinessLog -Message "Edge2 to Border = $netDeviceString" 
                        }
                    } 
                    else {
                        if ($_.Name -match "Rack\d{2}/Tor1") {
                            #tor1
                            $pingResults.ToBorder.d1 += @( $netDeviceString )
                            Write-AzsReadinessLog -Message "Tor1 to Border = $netDeviceString"
                        }
                        elseif ($_.Name -match "Rack\d{2}/Tor2") {
                            #tor2
                            $pingResults.ToBorder.d2 += @( $netDeviceString )
                            Write-AzsReadinessLog -Message "Tor2 to Border = $netDeviceString"
                        }
                    } 
                }
            } 
        }
    }

    $Global:ProgressPreference = $orginalProgPref

    $returnData = Compare-PingResults -Results $pingResults -Routing $Routing -OEM $OEM -NoUplinksRequired $NoUplinksRequired -Verbose:$VerbosePreference

    #need to add these to returnData
    $returnData | Add-Member -NotePropertyName 'sourceIP' -NotePropertyValue $ipInfo.TestIPv4Address
    $returnData | Add-Member -NotePropertyName 'networkName' -NotePropertyValue $ipInfo.networkName
    $returnData | Add-Member -NotePropertyName 'pingResults' -NotePropertyValue $pingResults

    return $returnData
}


function Get-PingData {
    <#
        .SYNOPSIS
        Provide valid data for ping checks based on OEM
 
        .EXAMPLE
        Get-PingData -OEM $OEM -IpConfigData $IpConfigData
 
    #>

    param(
        # All the IP data required to deploy AzureStack Network Devices
        [Parameter(mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [System.Array]
        $IpConfigData,

        # Information regarding the vNic used for ping testing
        [Parameter(mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [String]
        $OEM,

        # IsNoBMC
        [Parameter(mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [bool]
        $IsNoBMC
    )
    
    $uniqueData = [System.Collections.ArrayList]@()
    $groupedData = @{}
    if ($IsNoBMC) {
        # do not add the bmc ip assignment
        $assignmentMatch = "Rack|Gateway|^TOR"
    }
    else {
        $assignmentMatch = "Rack|Gateway|^TOR|BMC-Mgmt"
    }
    
    if ($OEM -eq "msftcisco") {
        foreach ($item in $ipConfigData) {
            if ($item.Name -match "P2P|-BMCMgmt|$cloudId-SU01-Infrastructure|-ExtendedStore|-ExtStoreMGMT" -and $item.Name -notmatch "CL01-P2P_Rack00/Edge2_To_Rack01/Tor\d|P2P_Rack00/B\d_To_Rack01/Edge\d" ) {
                $groupedData.$($item.Name) = [System.Collections.ArrayList]@()
                $item.Assignments | Where-Object {
                    if ($_.Name -match $assignmentMatch) {
                        $uniqueData += $_
                        $groupedData.$($item.Name) += $_
                    }
                }
            }            
        }
    }
    else {
        foreach ($item in $ipConfigData) {
            if ($item.Name -match "P2P|-BMCMgmt|$cloudId-SU01-Infrastructure|-ExtendedStore|-ExtStoreMGMT") {
                $groupedData.$($item.Name) = [System.Collections.ArrayList]@()
                $item.Assignments | Where-Object {
                    if ($_.Name -match $assignmentMatch) {
                        $uniqueData += $_
                        $groupedData.$($item.Name) += $_
                    }
                }
            }            
        }
    }

    return $groupedData
}

function Compare-PingResults {
    <#
        .SYNOPSIS
        Analayze Ping results to determine if the required connectivity is in place
 
        .EXAMPLE
        Compare-PingResults -Results $pingResults
 
    #>

    [CmdletBinding()]
    param(

        # Information regarding the vNic used for ping tests
        [Parameter(mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [System.Collections.Hashtable]
        $Results,

        # Routing: Static or BGP
        [Parameter(mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [String]
        $Routing,

        # OEM
        [Parameter(mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [String]
        $OEM,

        # Uplink required
        [Int]
        $uplinksRequiredPerTOR = 1,

        # No Uplinks required
        [bool]
        $NoUplinksRequired

    )

    Write-AzsReadinessLog -Message "uplinksRequiredPerTOR=$uplinksRequiredPerTOR" 
    
    $success = $true
    $pingFails = [System.Collections.ArrayList]@()

    # Border Warnings, a border may not respond to ICMP requests therefore they are always warnings.
    if ($Results.border) {
        $Results.border | Where-Object {
            Write-AzsReadinessLog -Message "PASS: (dvm) Ping Warning: $($_)" -Type 'Warning'
        }
    }

    # Uplink to Border ping Error/Warnings.
    foreach ($uplinkDevice in $Results."ToBorder".keys) {
        if ($Results."Toborder".$uplinkDevice ) {
            if ($OEM -eq "msftcisco"){
                #only check d1 if there are any error fail the test.
                if ("d1" -eq $uplinkDevice) {
                    $torErrLen = $Results."ToBorder".$uplinkDevice.length
                    if ($torErrLen -gt 0){
                        #error
                        $success = $false
                        $Results."ToBorder".$uplinkDevice | where-object {
                            Write-AzsReadinessLog -Message "FAIL: (dvm) Ping Error: $($_)" -Type 'Error'
                            $pingFails += "FAIL: (dvm) Ping Error: $($_)"
                        }
                    }
                }
            }
            else {

                # torErrLen will be 0,1,2. In efforts to require no uplinks, use the override NoUplinksRequired
                $torErrLen = $Results."ToBorder".$uplinkDevice.length
                if ($uplinksRequiredPerTOR -ge $torErrLen -or $NoUplinksRequired) {
                    
                    #warning
                    $Results."ToBorder".$uplinkDevice | where-object {
                        Write-AzsReadinessLog -Message "PASS: (dvm) Ping Warning: $($_)" -Type 'Warning'
                    }
                }
                else {
                    
                    #error
                    $success = $false
                    $Results."ToBorder".$uplinkDevice | where-object {
                        Write-AzsReadinessLog -Message "FAIL: (dvm) Ping Error: $($_)" -Type 'Error'
                        $pingFails += "FAIL: (dvm) Ping Error: $($_)" 
                    }
                }
            }
        }
    }

    if ($Results.warning) {
        $Results.warning | Where-Object {
            Write-AzsReadinessLog -Message "PASS: (dvm) Ping Warning: $($_)" -Type 'Warning'
        }
    }

    # Immediate Stop Deployment Failures. IBGP, BMC Uplinks, Switch/BMC Mgmt, Storage, and Infra connectivity issues.
    if ($Results.hardFail) {
        $success = $false
        $Results.hardFail | Where-Object {
            Write-AzsReadinessLog -Message "FAIL: (dvm) Ping Error: $($_)" -Type 'Error'
            $pingFails += "FAIL: (dvm) Ping Error: $($_)"
        }
    }

    if ($success) {
        $message = "PASS: (dvm) P2P Ping Testing has passed."
        Write-AzsReadinessLog -Message $message
        $result = 'OK'
    }
    else {
        $message = "FAIL: (dvm) P2P Ping Testing has failed. Check switch configurations and cabling. See log for full details."
        $pingFails += $message
        Write-AzsReadinessLog -Message $message -Type 'Error'
        $result = 'FAIL'
    }
    $hash = @{
        Test = 'dvm_pingTest'
        Result = $result
        FailureDetail = $pingFails
        outputObject = $null
    }
    Write-AzsResult -in $hash
    $global:ValidationResults += $hash

    $returnData = [PSCustomObject]@{
        'success' = $success
        'message' = $message
    }


    return $returnData
    
}
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