Public/Get-LMCollector.ps1

<#
.SYNOPSIS
Retrieves LogicMonitor collectors based on various parameters.

.DESCRIPTION
The Get-LMCollector function retrieves LogicMonitor collectors based on the specified parameters. It supports filtering by collector ID, collector name, or custom filter. The function uses the LogicMonitor REST API to make the requests.

.PARAMETER Id
Specifies the ID of the collector to retrieve. This parameter is mutually exclusive with the Name and Filter parameters.

.PARAMETER Name
Specifies the name of the collector to retrieve. This parameter is mutually exclusive with the Id and Filter parameters.

.PARAMETER Filter
Specifies a custom filter to retrieve collectors based on specific criteria. This parameter is mutually exclusive with the Id and Name parameters.

.PARAMETER BatchSize
Specifies the number of collectors to retrieve in each batch. The default value is 1000.

.EXAMPLE
Get-LMCollector -Id 123
Retrieves the collector with the specified ID.

.EXAMPLE
Get-LMCollector -Name "Collector1"
Retrieves the collector with the specified name.

.EXAMPLE
Get-LMCollector -Filter @{Property = "Value"}
Retrieves collectors based on the specified custom filter.

.NOTES
This function requires a valid LogicMonitor API authentication. Use Connect-LMAccount to authenticate before running this command.
#>

Function Get-LMCollector {

    [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/collector/collectors"

        #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" { $QueryParams = "?filter=hostname:`"$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 $Response -TypeName "LogicMonitor.Collector" )
                }
                #Check result size and if needed loop again
                Else {
                    [Int]$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.Collector" )
    }
    Else {
        Write-Error "Please ensure you are logged in before running any commands, use Connect-LMAccount to login and try again."
    }
}