Find-DbaDbGrowthEvent.ps1

#ValidationTags#Messaging,FlowControl,Pipeline,CodeStyle#
function Find-DbaDbGrowthEvent {
    <#
    .SYNOPSIS
        Finds any database AutoGrow events in the Default Trace.

    .DESCRIPTION
        Finds any database AutoGrow events in the Default Trace.

        The following events are included:
        92 - Data File Auto Grow
        93 - Log File Auto Grow
        94 - Data File Auto Shrink
        95 - Log File Auto Shrink

    .PARAMETER SqlInstance
        The target SQL Server instance or instances. This can be a collection and receive pipeline input to allow the function to be executed against multiple SQL Server instances.

    .PARAMETER SqlCredential
        Login to the target instance using alternative credentials. Windows and SQL Authentication supported. Accepts credential objects (Get-Credential)

    .PARAMETER Database
        The database(s) to process - this list is auto-populated from the server. If unspecified, all databases will be processed.

    .PARAMETER ExcludeDatabase
        The database(s) to exclude - this list is auto-populated from the server

    .PARAMETER EventType
        Provide a filter on growth event type to filter the results.

        Allowed values: Growth, Shrink

    .PARAMETER FileType
        Provide a filter on file type to filter the results.

        Allowed values: Data, Log

    .PARAMETER UseLocalTime
        Return the local time of the instance instead of converting to UTC.

    .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: AutoGrow,Growth,Database
        Author: Aaron Nelson

        Website: https://dbatools.io
        Copyright: (c) 2018 by dbatools, licensed under MIT
        License: MIT https://opensource.org/licenses/MIT

        Query Extracted from SQL Server Management Studio (SSMS) 2016.

    .LINK
        https://dbatools.io/Find-DbaDatabaseGrowthEvent

    .EXAMPLE
        PS C:\> Find-DbaDatabaseGrowthEvent -SqlInstance localhost

        Returns any database AutoGrow events in the Default Trace with UTC time for the instance for every database on the localhost instance.

    .EXAMPLE
        PS C:\> Find-DbaDatabaseGrowthEvent -SqlInstance localhost -UseLocalTime

        Returns any database AutoGrow events in the Default Trace with the local time of the instance for every database on the localhost instance.

    .EXAMPLE
        PS C:\> Find-DbaDatabaseGrowthEvent -SqlInstance ServerA\SQL2016, ServerA\SQL2014

        Returns any database AutoGrow events in the Default Traces for every database on ServerA\sql2016 & ServerA\SQL2014.

    .EXAMPLE
        PS C:\> Find-DbaDatabaseGrowthEvent -SqlInstance ServerA\SQL2016 | Format-Table -AutoSize -Wrap

        Returns any database AutoGrow events in the Default Trace for every database on the ServerA\SQL2016 instance in a table format.

    .EXAMPLE
        PS C:\> Find-DbaDatabaseGrowthEvent -SqlInstance ServerA\SQL2016 -EventType Shrink

        Returns any database Auto Shrink events in the Default Trace for every database on the ServerA\SQL2016 instance.

    .EXAMPLE
        PS C:\> Find-DbaDatabaseGrowthEvent -SqlInstance ServerA\SQL2016 -EventType Growth -FileType Data

        Returns any database Auto Growth events on data files in the Default Trace for every database on the ServerA\SQL2016 instance.

    #>
    [CmdletBinding()]
    param (
        [parameter(Mandatory, ValueFromPipeline)]
        [Alias("ServerInstance", "SqlServer")]
        [DbaInstance[]]$SqlInstance,
        [PSCredential]$SqlCredential,
        [Alias("Databases")]
        [object[]]$Database,
        [object[]]$ExcludeDatabase,
        [ValidateSet('Growth', 'Shrink')]
        [string]$EventType,
        [ValidateSet('Data', 'Log')]
        [string]$FileType,
        [switch]$UseLocalTime,
        [Alias('Silent')]
        [switch]$EnableException
    )

    begin {
        $eventClass = New-Object System.Collections.ArrayList
        92..95 | ForEach-Object { $null = $eventClass.Add($_) }

        if (Test-Bound 'EventType', 'FileType') {
            switch ($FileType) {
                'Data' {
                    <# should only contain events for data: 92 (grow), 94 (shrink) #>
                    $eventClass.Remove(93)
                    $eventClass.Remove(95)
                }
                'Log' {
                    <# should only contain events for log: 93 (grow), 95 (shrink) #>
                    $eventClass.Remove(92)
                    $eventClass.Remove(94)
                }
            }
            switch ($EventType) {
                'Growth' {
                    <# should only contain events for growth: 92 (data), 93 (log) #>
                    $eventClass.Remove(94)
                    $eventClass.Remove(95)
                }
                'Shrink' {
                    <# should only contain events for shrink: 94 (data), 95 (log) #>
                    $eventClass.Remove(92)
                    $eventClass.Remove(93)
                }
            }
        }

        $eventClassFilter = $eventClass -join ","

        $sqlTemplate = "
            BEGIN TRY
                IF (SELECT CONVERT(INT,[value_in_use]) FROM sys.configurations WHERE [name] = 'default trace enabled' ) = 1
                    BEGIN
                        DECLARE @curr_tracefilename VARCHAR(500);
                        DECLARE @base_tracefilename VARCHAR(500);
                        DECLARE @indx INT;

                        SELECT @curr_tracefilename = [path]
                        FROM sys.traces
                        WHERE is_default = 1 ;

                        SET @curr_tracefilename = REVERSE(@curr_tracefilename);
                        SELECT @indx  = PATINDEX('%\%', @curr_tracefilename);
                        SET @curr_tracefilename = REVERSE(@curr_tracefilename);
                        SET @base_tracefilename = LEFT( @curr_tracefilename,LEN(@curr_tracefilename) - @indx) + '\log.trc';

                        SELECT
                            SERVERPROPERTY('MachineName') AS ComputerName,
                            ISNULL(SERVERPROPERTY('InstanceName'), 'MSSQLSERVER') AS InstanceName,
                            SERVERPROPERTY('ServerName') AS SqlInstance,
                            CONVERT(INT,(DENSE_RANK() OVER (ORDER BY [StartTime] DESC))%2) AS OrderRank,
                                CONVERT(INT, [EventClass]) AS EventClass,
                            [DatabaseName],
                            [Filename],
                            CONVERT(INT,(Duration/1000)) AS Duration,
                            $(if (-not $UseLocalTime) { "
                            DATEADD (MINUTE, DATEDIFF(MINUTE, GETDATE(), GETUTCDATE()), [StartTime]) AS StartTime,  -- Convert to UTC time
                            DATEADD (MINUTE, DATEDIFF(MINUTE, GETDATE(), GETUTCDATE()), [EndTime]) AS EndTime,  -- Convert to UTC time"
                            }
                            else { "
                            [StartTime] AS StartTime,
                            [EndTime] AS EndTime,"
                            })
                            ([IntegerData]*8.0/1024) AS ChangeInSize,
                            ApplicationName,
                            HostName,
                            SessionLoginName,
                            SPID
                        FROM::fn_trace_gettable( @base_tracefilename, DEFAULT )
                        WHERE
                            [EventClass] IN ($eventClassFilter)
                            AND [ServerName] = @@SERVERNAME
                            AND [DatabaseName] IN (_DatabaseList_)
                        ORDER BY [StartTime] DESC;
                    END
                ELSE
                    SELECT
                        SERVERPROPERTY('MachineName') AS ComputerName,
                        ISNULL(SERVERPROPERTY('InstanceName'), 'MSSQLSERVER') AS InstanceName,
                        SERVERPROPERTY('ServerName') AS SqlInstance,
                        -100 AS [OrderRank],
                        -1 AS [OrderRank],
                        0 AS [EventClass],
                        0 [DatabaseName],
                        0 AS [Filename],
                        0 AS [Duration],
                        0 AS [StartTime],
                        0 AS [EndTime],
                        0 AS ChangeInSize,
                        0 AS [ApplicationName],
                        0 AS [HostName],
                        0 AS [SessionLoginName],
                        0 AS [SPID]
            END	TRY
            BEGIN CATCH
                SELECT
                    SERVERPROPERTY('MachineName') AS ComputerName,
                    ISNULL(SERVERPROPERTY('InstanceName'), 'MSSQLSERVER') AS InstanceName,
                    SERVERPROPERTY('ServerName') AS SqlInstance,
                    -100 AS [OrderRank],
                    -100 AS [OrderRank],
                    ERROR_NUMBER() AS [EventClass],
                    ERROR_SEVERITY() AS [DatabaseName],
                    ERROR_STATE() AS [Filename],
                    ERROR_MESSAGE() AS [Duration],
                    1 AS [StartTime],
                    1 AS [EndTime],
                    1 AS [ChangeInSize],
                    1 AS [ApplicationName],
                    1 AS [HostName],
                    1 AS [SessionLoginName],
                    1 AS [SPID]
            END CATCH"

        Test-DbaDeprecation -DeprecatedOn "1.0.0" -Alias Find-DbaDatabaseGrowthEvent
    }
    process {
        foreach ($instance in $SqlInstance) {
            try {
                $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $SqlCredential
            } catch {
                Stop-Function -Message "Error occurred while establishing connection to $instance" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue
            }

            $dbs = $server.Databases

            if ($Database) {
                $dbs = $dbs | Where-Object Name -In $Database
            }

            if ($ExcludeDatabase) {
                $dbs = $dbs | Where-Object Name -NotIn $ExcludeDatabase
            }

            #Create dblist name in 'db1', 'db2' format
            $dbsList = "'$($($dbs | ForEach-Object {$_.Name}) -join "','")'"
            Write-Message -Level Verbose -Message "Executing query against $dbsList on $instance"

            $sql = $sqlTemplate -replace '_DatabaseList_', $dbsList
            Write-Message -Level Debug -Message "Executing SQL Statement:`n $sql"

            $defaults = 'ComputerName', 'InstanceName', 'SqlInstance', 'EventClass', 'DatabaseName', 'Filename', 'Duration', 'StartTime', 'EndTime', 'ChangeInSize', 'ApplicationName', 'HostName'

            try {
                Select-DefaultView -InputObject $server.Query($sql) -Property $defaults
            } catch {
                Stop-Function -Message "Issue collecting data on $server" -Target $server -ErrorRecord $_ -Exception $_.Exception.InnerException.InnerException.InnerException -Continue
            }
        }
    }
}