functions/Get-DbaAgHadr.ps1

function Get-DbaAgHadr {
    <#
    .SYNOPSIS
        Gets the Hadr service setting on the specified SQL Server instance.
 
    .DESCRIPTION
        Gets the Hadr setting, from the service level, and returns true or false for the specified SQL Server instance.
 
    .PARAMETER SqlInstance
        The target SQL Server instance or instances.
 
    .PARAMETER SqlCredential
        Login to the target instance using alternative credentials. Accepts PowerShell credentials (Get-Credential).
 
        Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory - Integrated are all supported.
 
        For MFA support, please use Connect-DbaInstance.
 
    .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: AvailabilityGroup, HA, AG
        Author: Shawn Melton (@wsmelton), http://wsmelton.github.io
 
        Website: https://dbatools.io
        Copyright: (c) 2018 by dbatools, licensed under MIT
        License: MIT https://opensource.org/licenses/MIT
 
    .LINK
        https://dbatools.io/Get-DbaAgHadr
 
    .EXAMPLE
        PS C:\> Get-DbaAgHadr -SqlInstance sql2016
 
        Returns a status of the Hadr setting for sql2016 SQL Server instance.
    #>

    [CmdletBinding()]
    param (
        [parameter(Mandatory, ValueFromPipeline)]
        [DbaInstanceParameter[]]$SqlInstance,
        [PSCredential]$SqlCredential,
        [switch]$EnableException
    )
    process {
        foreach ($instance in $SqlInstance) {
            try {
                $server = Connect-DbaInstance -SqlInstance $instance -SqlCredential $SqlCredential
            } catch {
                Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue
            }

            Add-Member -Force -InputObject $server -MemberType NoteProperty -Name ComputerName -value $server.ComputerName
            Add-Member -Force -InputObject $server -MemberType NoteProperty -Name InstanceName -value $server.ServiceName
            Add-Member -Force -InputObject $server -MemberType NoteProperty -Name SqlInstance -value $server.DomainInstanceName

            Select-DefaultView -InputObject $server -Property 'ComputerName', 'InstanceName', 'SqlInstance', 'IsHadrEnabled'
        }
    }
}
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