Public/Get-LMDeviceGroupDevices.ps1

Function Get-LMDeviceGroupDevices
{

    [CmdletBinding(DefaultParameterSetName = 'Id')]
    Param (
        [Parameter(Mandatory,ParameterSetName = 'Id')]
        [Int]$Id,

        [Parameter(ParameterSetName = 'Name')]
        [String]$Name,

        [Hashtable]$Filter,

        [Boolean]$IncludeSubGroups = $false,

        [Int]$BatchSize = 1000
    )
    #Check if we are logged in and have valid api creds
    If($global:LMAuth.Valid){

        If($Name){
            If($Name -Match "\*"){
                Write-Host "Wildcard values not supported for device group name." -ForegroundColor Yellow
                return
            }
            $Id = (Get-LMDeviceGroup -Name $Name | Select-Object -First 1 ).Id
            If(!$Id){
                Write-Host "Unable to find device group with name: $Name, please check spelling and try again." -ForegroundColor Yellow
                return
            }
        }
        $Ids =@()
        If($IncludeSubGroups){
            $Ids += Get-NestedDeviceGroups -Ids @($Id)
        }
        #Add in oringal Id to our list
        $Ids += $Id

        #Our return object
        $Results = @()

        Foreach($i in $Ids){

            #Build header and uri
            $ResourcePath = "/device/groups/$i/devices"

            #Initalize vars
            $QueryParams = ""
            $Count = 0
            $Done = $false

            #Loop through requests
            While(!$Done){
                #Build query params
                $QueryParams = "?size=$BatchSize&offset=$Count&sort=+id"

                If($Filter){
                    #List of allowed filter props
                    $PropList = @()
                    $ValidFilter = Format-LMFilter -Filter $Filter -PropList $PropList
                    $QueryParams = "?filter=$ValidFilter&size=$BatchSize&offset=$Count&sort=+id"
                }

                Try{
                    $Headers = New-LMHeader -Auth $global:LMAuth -Method "GET" -ResourcePath $ResourcePath
                    $Uri = "https://$($global:LMAuth.Portal).logicmonitor.com/santaba/rest" + $ResourcePath + $QueryParams

                    #Issue request
                    $Response = Invoke-RestMethod -Uri $Uri -Method "GET" -Headers $Headers

                    #Stop looping if single device, no need to continue
                    If(![bool]$Response.psobject.Properties["total"]){
                        $Done = $true
                        $Results += $Response
                    }
                    #Check result size and if needed loop again
                    Else{
                        [Int]$Total = $Response.Total
                        [Int]$Count += ($Response.Items | Measure-Object).Count
                        $Results += $Response.Items
                        If($Count -ge $Total){
                            $Done = $true
                        }
                    }
                }
                Catch [Exception] {
                    $Exception = $PSItem
                    Switch($PSItem.Exception.GetType().FullName){
                        {"System.Net.WebException" -or "Microsoft.PowerShell.Commands.HttpResponseException"} {
                            $HttpException = ($Exception.ErrorDetails.Message | ConvertFrom-Json).errorMessage
                            $HttpStatusCode = $Exception.Exception.Response.StatusCode.value__
                            Write-Error "Failed to execute web request($($HttpStatusCode)): $HttpException"
                        }
                        default {
                            $LMError = $Exception.ToString()
                            Write-Error "Failed to execute web request: $LMError"
                        }
                    }
                    Return
                }
            }
            #Dedupe results
        }
        Return ($Results | Sort-Object -Property Id -Unique)
    }
    Else{
        Write-Host "Please ensure you are logged in before running any comands, use Connect-LMAccount to login and try again." -ForegroundColor Yellow
    }
}