Collapse Clustered Instances at Group Level

Previous had an issue with the properties it was adding.  If you're creating a new property from a proertySource script, it adds it as an "auto.*" property, which goes away as soon as the script stops processing.  To add a new permanent custom property, you have to use the REST API, not just a "category.name=data" output from the script.  Here's the final: 

# These first two lines will need to change to fit your environment.
# The groupParentID is the id of a group to house the dynamic groups that will be created...
# if that's you root level, use that ID.
# We're using a group named "Failover Clusters" in our heirarchy to house them.

#######
# Cole McDonald - Sr. Technical Analyst
# cole.mcdonald@beyondimpactllc.com
# Beyond Impact 2.0, llc
# No warranty provided for this code, use at your own risk
#######

$company            = "Your_Company_Name"
$groupParentID      = "566"

$URLRoot            = "https://$company.logicmonitor.com/santaba/rest"

$server             = "##system.displayname##"
$accessID           = "##LogicMonitor.accessId.key##"
$accessKey          = "##LogicMonitor.accessKey.key##"

function Send-Request {
    param (
        $cred,
        $accessid   = $null,
        $accesskey  = $null,
        $URL               ,
        $data       = $null,
        $version    = '2'  ,
        $httpVerb   = "GET"
    )

    if ( $accessId -eq $null) {
        $accessId   = $cred.UserName
        $accessKey  = $cred.GetNetworkCredential().Password
    }

    # Use TLS 1.2
    [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

    # Get current time in milliseconds
    $epoch          = [Math]::Round(
        ( New-TimeSpan `
            -start (Get-Date -Date "1/1/1970") `
            -end (Get-Date).ToUniversalTime()).TotalMilliseconds
        )

    # Concatenate Request Details
    $requestVars    = $httpVerb + $epoch + $data + $resourcePath

    # Construct Signature
    $hmac           = New-Object System.Security.Cryptography.HMACSHA256
    $hmac.Key       = [Text.Encoding]::UTF8.GetBytes( $accessKey )
    $signatureBytes = $hmac.ComputeHash( [Text.Encoding]::UTF8.GetBytes( $requestVars ) )
    $signatureHex   = [System.BitConverter]::ToString( $signatureBytes ) -replace '-'
    $signature      = [System.Convert]::ToBase64String( [System.Text.Encoding]::UTF8.GetBytes( $signatureHex.ToLower() ) )

    # Construct Headers
    $auth           = 'LMv1 ' + $accessId + ':' + $signature + ':' + $epoch
    $headers        = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"
    $headers.Add(     "Authorization", $auth              )
    $headers.Add(     "Content-Type" , 'application/json' )

    # uses version 2 of the API
    $headers.Add(     "X-version"    , $version           )

    # Make Request
    $response       = Invoke-RestMethod `
        -Uri           $URL             `
        -Method        $httpVerb        `
        -Body          $data            `
        -Header        $headers

    $result         = $response

    Return $result
}

if ( test-path "\\$server\C`$\Windows\Cluster\CLUSDB" ) {
    
    "system.categories=ClusterMember"   
    
    $clusterInfo    = invoke-command `
        -ComputerName $server        `
        -scriptBlock  {
            Import-Module failoverclusters
            $cluster = get-cluster
            "$($cluster.name):$($cluster.id)"
        }

    $clustername    = ($clusterinfo -split ':')[0]
    $clusterid      = ($clusterinfo -split ':')[1]

    $groupName      = "Failover Cluster - $clustername"

    # Read Groups
    # Construct URL
    $resourcePath   = "/device/groups"
    $url            = $URLRoot + $resourcePath

    # Make Request
    $response       = Send-Request  `
        -accessid     $accessID     `
        -accesskey    $accessKey    `
        -URL          $url         
        
    $group   = $response.items | ? name -eq $groupName
    
    if ( ($group | measure-object).count -gt 0 ) {

        # "*** Group Already exists.  Need Device properties? ***"
        try {
            $resource = "##Failover.Cluster.GUID##"
        } catch {
            $resource = $null
        }

        if ( $resource -ne $clusterid ) {
            # Add Properties
            # Construct URL
            $resourcePath   = "/device/devices/##system.deviceid##/properties/"
            $url            = $URLRoot + $resourcePath

            # Construct Data Body
            $data = `
@"
    {
        `"type`"         : `"custom`"                ,
        `"name`"         : `"Failover.Cluster.GUID`" ,
        `"value`"        : `"$ClusterID`"
    }
"@
            $response       = Send-Request  `
                -accesskey    $accessKey    `
                -accessid     $accessId     `
                -URL          $url          `
                -data         $data         `
                -httpVerb     "POST"
        }
    } else {
        # "*** create group & tag resource ***"

        # Construct URL
        $resourcePath = "/device/groups"
        $url          = $URLRoot + $resourcePath

        # Construct Data Body
        $data = `
@"
{
    `"name`"             : `"$groupName`"                                ,
    `"parentId`"         : `"$groupParentID`"                            ,
    `"disableAlerting`"  : `"true`"                                      ,
    `"enableNetflow`"    : `"false`"                                     ,
    `"appliesTo`"        : `"Failover.Cluster.GUID == \`"$ClusterID\`"`" ,
    `"customProperties`" : [{
        `"name`"         : `"Failover.Cluster.ParentGUID`"               ,
        `"value`"        : `"$ClusterID`"
    }]
}
"@

        try {
            $response       = Send-Request  `
                -accesskey    $accessKey    `
                -accessid     $accessId     `
                -URL          $url          `
                -data         $data         `
                -httpVerb     "POST"
            

            # Add Properties
            # Construct URL
            $resourcePath   = "/device/devices/##system.deviceid##/properties/Failover.Cluster.GUID"
            $url            = $URLRoot + $resourcePath

            # Construct Data Body
            $data = `
@"
    {
            `"type`"         : `"custom`"                ,
            `"name`"         : `"Failover.Cluster.GUID`" ,
            `"value`"        : `"$ClusterID`"
    }
"@
            $response       = Send-Request  `
                -accesskey    $accessKey    `
                -accessid     $accessId     `
                -URL          $url          `
                -data         $data         `
                -httpVerb     "PUT"
        } catch {
            $error[0] | out-file $logPath -append
        }
    }
}