Public/Get-LMAppliesToFunction.ps1

<#
.SYNOPSIS
Retrieves AppliesTo functions from LogicMonitor.

.DESCRIPTION
The Get-LMAppliesToFunction function retrieves AppliesTo functions from LogicMonitor based on specified criteria. These functions are used in LogicModule configurations to determine which devices they apply to.

.PARAMETER Id
The ID of the AppliesTo function to retrieve. Part of a mutually exclusive parameter set.

.PARAMETER Name
The name of the AppliesTo function to retrieve. Part of a mutually exclusive parameter set.

.PARAMETER Filter
A filter object to apply when retrieving functions. Part of a mutually exclusive parameter set.

.PARAMETER BatchSize
The number of results to return per request. Must be between 1 and 1000. Defaults to 1000.

.EXAMPLE
#Retrieve an AppliesTo function by ID
Get-LMAppliesToFunction -Id 123

.EXAMPLE
#Retrieve an AppliesTo function by name
Get-LMAppliesToFunction -Name "MyFunction"

.EXAMPLE
#Retrieve AppliesTo functions using a filter
Get-LMAppliesToFunction -Filter $filterObject

.NOTES
You must run Connect-LMAccount before running this command.

.INPUTS
None. You cannot pipe objects to this command.

.OUTPUTS
Returns LogicMonitor.AppliesToFunction objects.
#>

Function Get-LMAppliesToFunction {

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

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

        [Parameter(ParameterSetName = 'Filter')]
        [Object]$Filter,

        [ValidateRange(1, 1000)]
        [Int]$BatchSize = 1000
    )
    #Check if we are logged in and have valid api creds
    If ($Script:LMAuth.Valid) {
        
        #Build header and uri
        $ResourcePath = "/setting/functions"

        #Initalize vars
        $QueryParams = ""
        $Count = 0
        $Done = $false
        $Results = @()

        #Loop through requests
        While (!$Done) {
            #Build query params
            Switch ($PSCmdlet.ParameterSetName) {
                "All" { $QueryParams = "?size=$BatchSize&offset=$Count&sort=+id" }
                "Id" { $resourcePath += "/$Id" }
                "Name" { $QueryParams = "?filter=name:`"$Name`"&size=$BatchSize&offset=$Count&sort=+id" }
                "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 $Script:LMAuth -Method "GET" -ResourcePath $ResourcePath
                $Uri = "https://$($Script:LMAuth.Portal).logicmonitor.com/santaba/rest" + $ResourcePath + $QueryParams

                
    
                Resolve-LMDebugInfo -Url $Uri -Headers $Headers[0] -Command $MyInvocation

                #Issue request
                $Response = Invoke-RestMethod -Uri $Uri -Method "GET" -Headers $Headers[0] -WebSession $Headers[1]

                #Stop looping if single device, no need to continue
                If ($PSCmdlet.ParameterSetName -eq "Id") {
                    $Done = $true
                    Return (Add-ObjectTypeInfo -InputObject $Response -TypeName "LogicMonitor.AppliesToFunction" )
                }
                #Check result size and if needed loop again
                Else {
                    [Int]$Total = $Response.Total
                    [Int]$Count += ($Response.Items | Measure-Object).Count
                    $Results += $Response.Items
                    If ($Count -ge $Total) {
                        $Done = $true
                    }
                }
            }
            Catch [Exception] {
                $Proceed = Resolve-LMException -LMException $PSItem
                If (!$Proceed) {
                    Return
                }
            }
        }
        Return (Add-ObjectTypeInfo -InputObject $Results -TypeName "LogicMonitor.AppliesToFunction" )
    }
    Else {
        Write-Error "Please ensure you are logged in before running any commands, use Connect-LMAccount to login and try again."
    }
}