在运行 Azure DevOps 管道时，如果我们不给管道的 powershell 脚本中使用的变量任何值

Question

I have a powershell script in which variable "ResourceGroup" variable is used. We need to give value to Resource group while running the pipeline.If we dont give any value to that variable we need to get all the resource groups from the whole subscription of azure.Please suggest.

This the code we are using

$excel=@()
    $list = Get-AznetworkInterface |where-Object {$_.ResourceGroupName -Clike '*$(givenVarible)'} |Select-Object
    foreach ($i in $list) {
   $x = " " | Select-Object SID1_name,SID1_VIP,SID2_name,SID2_VIP,SID3_name,SID3_VIP
   $case =1
   While ($case -1t $i.IpConfigurations.Count)
   {
   switch ($case){
   1 {
      $x.SID1_name = $i.IPconfigurations[$case];
     $x.SID1_VIP = $i.IPconfigurations[$case].PrivateIpaddress;
     break
     }
    2 {
     $x.SID2_name = $i.IPconfigurations[$case];
     $x.SID2_VIP = $i.IPconfigurations[$case].PrivateIpaddress;
     break
     }
    3 {
    $x.SID1_name = $i.IPconfigurations[$case];
     $x.SID1_VIP = $i.IPconfigurations[$case].PrivateIpaddress;
     break
     }
     $case =$case+1
     $excel +=$x
     $excel | Format-Table SID1_name,SID1_VIP,SID2_name,SID2_VIP,SID3_name,SID3_VIP
     $excel |Export-Csv  -NTI - Path "$(Build.ArtifactoryStagingDirectory)/report.csv"

Answer 1

It looks like you just need to add a Param block so you can provide this parameter. However, if you want all Azure Network Interfaces, then you just need to use Get-AzNetworkInterface without parameters.

Param (
    # Mandatory=$false ensures that the user does not have to specify this information.
    [parameter(Mandatory=$false)][string]$ResourceGroup
)

# Checks if the user has used the parameter
if ($PSBoundParamters.ContainsKey('ResourceGroup')) {
    $list = Get-AznetworkInterface |where-Object {$_.ResourceGroupName -Clike $ResourceGroup} |Select-Object
}
else {
    $List = Get-AzNetworkInterface
}
# Rest of script

You would then run it like this:

PS C:\My_Dir> .\MyScript.ps1 -ResourceGroup MyResourceGroupName

Or without parameters to obtain all the Network Interfaces.

PS C:\My_Dir> .\MyScript.ps1

Things to be aware of:

• If you do not know, clike is a case sensitive match. I don't think naming of Resource Groups in Azure is case sensitive, so it is probably better just to use -like .
• Select-Object selects chosen properties from an object, so it is not necessary in your script. If you wanted just the name or other specific values from the Network Interface, you would use ... | Select-Object -Property Name,IP,etc ... | Select-Object -Property Name,IP,etc .
• ResourceGroupName is a parameter of Get-AzNetworkInterface , so you can just specify the name in the parameter. Using Where-Object is superfluous.

$list = Get-AzNetworkInterface -ResourceGroupName $ResourceGroup

• You should check for null in the event that the user uses a Resource Group that does not contain any Network Interface resources.

By the way, you are missing a closing set of curly braces for your while loop and it is not necessary to use break in your switch statement because it has no repeated conditions.

EDIT

You could in reality replace your while loop and switch with a smaller section of code, within a for loop. I tested with some made up objects.

for ($Count = 0; $count -lt $i.IpConfigurations.Count; $count++) {
    $x."SID$($count + 1)_name" = $i.IPConfigurations[$Count].Name
    $x."SID$($count + 1)_VIP" = $i.IPConfigurations[$Count].PrivateIpAddress
}

Returns:

SID1_name : @{IP=192.168.1.1; AdapterName=Test; PrivateIpAddress=192.168.1.1}
SID1_VIP  : 192.168.1.1
SID2_name : @{IP=192.168.1.2; AdapterName=Test2; PrivateIpAddress=192.168.1.2}
SID2_VIP  : 192.168.1.2
SID3_name : @{IP=192.168.1.3; AdapterName=Test3; PrivateIpAddress=192.168.1.3}
SID3_VIP  : 192.168.1.3

How Does It Work?

The parameter names take a variable so you do not need to repeat them, also, if there are more than three objects or IP configurations, you do not need to specify them specifically in your script. You could even use Add-Member to dynamically create them as they are needed. Just need to remember that the first object in an array is value 0 and you are starting the numbering convention of your parameters at 1, so the plus 1 is necessary in the parameter name.

Here is an example of dynamically adding your members:

$x = New-Object psobject
for ($Count = 0; $count -le $i.IpConfigurations.Count; $count++) {
    $x | Add-Member -MemberType NoteProperty -Name "SID$($Count + 1)_Name" -Value $i.IPConfigurations[$Count].Name
    $x | Add-Member -MemberType NoteProperty -Name "SID$($Count + 1)_VIP" -Value $i.IPConfigurations[$Count].PrivateIpAddress
}

Suggested script.

Param (
    # Mandatory=$false ensures that the user does not have to specify this information.
    [parameter(Mandatory=$false)][string]$ResourceGroup
)
$Excel = @()

# Checks if the user has used the parameter
if ($PSBoundParameters.ContainsKey('ResourceGroup')) {
    $List = Get-AzNetworkInterface -ResourceGroupName $ResourceGroup # | Select-Object -Property Name,IPConfigurations # Uncomment to select these properties
}
else {
    $List = Get-AzNetworkInterface # | Select-Object -Property Name,IPConfigurations # Uncomment to select these properties
}

# If you don't have any results, no need to continue.
if ($null -ne $List) {
    foreach ($i in $List) {
        $x = New-Object psobject
        for ($Count = 0; $count -le $i.IpConfigurations.Count; $count++) {
            # Add member properties as they are required
            $x | Add-Member -MemberType NoteProperty -Name "SID$($Count + 1)_Name" -Value $i.IPConfigurations[$Count].Name
            $x | Add-Member -MemberType NoteProperty -Name "SID$($Count + 1)_VIP" -Value $i.IPConfigurations[$Count].PrivateIpAddress
        }
        # Update your array
        $Excel += $x
    }
    # Export directly to CSV, no need to use Format-Table here, unless you want to see the output in the console too.
    $Excel | Export-Csv -Path C:\Test\SampleReport.csv -NoClobber -NoTypeInformation -Encoding UTF8 -Force
}