functions/Get-DbaDistributor.ps1

function Get-DbaDistributor {
    <#
    .SYNOPSIS
        Gets the information about a replication distributor for a given SQL Server instance.
     
    .DESCRIPTION
        This function locates and enumerates distributor information for a given SQL Server instance.
     
    .PARAMETER SqlInstance
        Allows you to specify a comma separated list of servers to query.
     
    .PARAMETER SqlCredential
        Allows you to login to servers using SQL Logins as opposed to Windows Auth/Integrated/Trusted. To use:
        $cred = Get-Credential, this pass this $cred to the param.
        Windows Authentication will be used if DestinationSqlCredential is not specified. To connect as a different Windows user, run PowerShell as that user.
     
    .PARAMETER Silent
        Use this switch to disable any kind of verbose messages
     
    .NOTES
        Author: William Durkin, @sql_williamd
        Tags: Replication
        Website: https://dbatools.io
        Copyright: (C) Chrissy LeMaire, clemaire@gmail.com
        License: GNU GPL v3 https://opensource.org/licenses/GPL-3.0
     
    .LINK
        https://dbatools.io/Get-DbaDistributor
     
    .EXAMPLE
        Get-DbaDistributor -SqlInstance sql2008, sqlserver2012
        Retrieve distributor information for servers sql2008 and sqlserver2012.
    #>

    [CmdletBinding()]
    Param (
        [parameter(Position = 0, Mandatory, ValueFromPipeline)]
        [Alias("ServerInstance", "SqlServer", "SqlServers")]
        [DbaInstanceParameter[]]$SqlInstance,
        [parameter(Position = 1)]
        [PSCredential]$SqlCredential,
        [switch]$Silent
    )
    begin {
        if ([System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.RMO") -eq $null) {
            Stop-Function -Message "Replication management objects not available. Please install SQL Server Management Studio."
        }
    }
    
    process {
        if (Test-FunctionInterrupt) { return }
        
        foreach ($instance in $SqlInstance) {
            Write-Message -Level Verbose -Message "Attempting to connect to $instance"
            
            # connect to the instance
            try {
                $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $SqlCredential -MinimumVersion 9
            }
            catch {
                Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue
            }
            
            Write-Message -Level Verbose -Message "Attempting to retrieve distributor information from $instance"
            
            # Connect to the distributor of the instance
            try {
                $sourceSqlConn = $server.ConnectionContext.SqlConnectionObject
                $distributor = New-Object Microsoft.SqlServer.Replication.ReplicationServer $sourceSqlConn
            }
            catch {
                Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue
            }
            
            Add-Member -Force -InputObject $distributor -MemberType NoteProperty -Name ComputerName -Value $server.NetName
            Add-Member -Force -InputObject $distributor -MemberType NoteProperty -Name InstanceName -Value $server.ServiceName
            Add-Member -Force -InputObject $distributor -MemberType NoteProperty -Name SqlInstance -Value $server.DomainInstanceName
            
            Select-DefaultView -InputObject $distributor -Property ComputerName, InstanceName, SqlInstance, IsPublisher, IsDistributor, DistributionServer, DistributionDatabase, DistributorInstalled, DistributorAvailable, HasRemotePublisher
        }
    }
}