Functions/function-Get-PointInTime.ps1
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function Get-PointInTime { <# .SYNOPSIS Get a point in time covered by a set of SQL backups .DESCRIPTION Find a point in time to which a SQL Server database can be restore given a set of backup files .EXAMPLE Get-PointInTime -BackupObjects $BackupObjects .PARAMETER BackupObjects A collection of BackupObject objects #> [CmdletBinding()] param ( [Parameter(Mandatory=$True, ValueFromPipeline=$True, ValueFromPipelineByPropertyName=$True)] [object]$backupsObject ) Write-Verbose "Get-PointInTime - Entering" Write-Verbose "Get-PointInTime - Checking Dates" $StartDate = $BackupsObject | Where-Object {$_.BackupType -eq 'Database'} | Measure-Object -Min -Property startdate $EndDate = $BackupsObject.FinishDate | Measure-Object -Maximum if (!($startdate.Minimum -is [dateTime])){ Write-Verbose "Get-PointInTime - Startdate is not a datetime, exiting" Throw "Startdate is not a datetime" } if (!($EndDate.Maximum -is [dateTime])){ Write-Verbose "Get-PointInTime - EndDate is not a datetime, exiting" Throw "Enddate is not a datetime" } if ($StartDate.minimum -eq $EndDate.Maximum){ Write-Verbose "Get-PointInTime - DateTimes are the same, random call will fail, so return Endate" return $Enddate.Maximum }else{ $seconds = Get-Random ($EndDate.Maximum -$StartDate.Minimum).TotalSeconds #$seconds = get-random ($EndDate - $StartDate).totalseconds $TargetTime = $startdate.Minimum.AddSeconds($seconds) return $TargetTime } Write-Verbose "Get-PointInTime - Leaving" } |