functions/Stop-DbaXESession.ps1

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function Stop-DbaXESession {
    <#
        .SYNOPSIS
            Stops Extended Events sessions.
 
        .DESCRIPTION
            This script stops Extended Events sessions on a SQL Server instance.
 
        .PARAMETER SqlInstance
            Target SQL Server. You must have sysadmin access and server version must be SQL Server version 2008 or higher.
 
        .PARAMETER SqlCredential
            Login to the target instance using alternative credentials. Windows and SQL Authentication supported. Accepts credential objects (Get-Credential)
 
        .PARAMETER Session
            Specifies individual Extended Events sessions to stop.
 
        .PARAMETER AllSessions
            If this switch is enabled, all Extended Events sessions will be stopped except the packaged sessions AlwaysOn_health, system_health, telemetry_xevents.
 
        .PARAMETER InputObject
            Accepts the object output by Get-DbaXESession as the list of sessions to be stopped.
 
        .PARAMETER EnableException
            By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.
            This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting.
            Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch.
 
        .NOTES
            Tags: ExtendedEvent, XE, XEvent
            Author: Doug Meyers
            Website: https://dbatools.io
            Copyright: (C) Chrissy LeMaire, clemaire@gmail.com
            License: MIT https://opensource.org/licenses/MIT
 
        .LINK
            https://dbatools.io/Stop-DbaXESession
 
        .EXAMPLE
            Stop-DbaXESession -SqlInstance sqlserver2012 -AllSessions
 
            Stops all Extended Event Session on the sqlserver2014 instance.
 
        .EXAMPLE
            Stop-DbaXESession -SqlInstance sqlserver2012 -Session xesession1,xesession2
 
            Stops the xesession1 and xesession2 Extended Event sessions.
 
        .EXAMPLE
            Get-DbaXESession -SqlInstance sqlserver2012 -Session xesession1 | Stop-DbaXESession
 
            Stops the sessions returned from the Get-DbaXESession function.
    #>

    [CmdletBinding(DefaultParameterSetName = 'Session')]
    param (
        [parameter(Position = 1, Mandatory, ParameterSetName = 'Session')]
        [parameter(Position = 1, Mandatory, ParameterSetName = 'All')]
        [Alias("ServerInstance", "SqlServer")]
        [DbaInstanceParameter[]]$SqlInstance,

        [parameter(ParameterSetName = 'Session')]
        [parameter(ParameterSetName = 'All')]
        [PSCredential]$SqlCredential,

        [parameter(Mandatory, ParameterSetName = 'Session')]
        [Alias("Sessions")]
        [object[]]$Session,

        [parameter(Mandatory, ParameterSetName = 'All')]
        [switch]$AllSessions,

        [parameter(Mandatory, ValueFromPipeline, ParameterSetName = 'Object')]
        [Microsoft.SqlServer.Management.XEvent.Session[]]$InputObject,
        [switch]$EnableException
    )

    begin {
        # Stop each XESession
        function Stop-XESessions {
            [CmdletBinding()]
            param ([Microsoft.SqlServer.Management.XEvent.Session[]]$xeSessions)

            foreach ($xe in $xeSessions) {
                $instance = $xe.Parent.Name
                $session = $xe.Name
                if ($xe.isRunning) {
                    Write-Message -Level Verbose -Message "Stopping XEvent Session $session on $instance."
                    try {
                        $xe.Stop()
                    }
                    catch {
                        Stop-Function -Message "Could not stop XEvent Session on $instance" -Target $session -ErrorRecord $_ -Continue
                    }
                }
                else {
                    Write-Message -Level Warning -Message "$session on $instance is already stopped"
                }
                Get-DbaXESession -SqlInstance $xe.Parent -Session $session
            }
        }
    }

    process {
        if ($InputObject) {
            Stop-XESessions $InputObject
        }
        else {
            foreach ($instance in $SqlInstance) {
                $xeSessions = Get-DbaXESession -SqlInstance $instance -SqlCredential $SqlCredential

                # Filter xesessions based on parameters
                if ($Session) {
                    $xeSessions = $xeSessions | Where-Object { $_.Name -in $Session }
                }
                elseif ($AllSessions) {
                    $systemSessions = @('AlwaysOn_health', 'system_health', 'telemetry_xevents')
                    $xeSessions = $xeSessions | Where-Object { $_.Name -notin $systemSessions }
                }

                Stop-XESessions $xeSessions
            }
        }
    }
}