functions/New-DbaDbDataGeneratorConfig.ps1
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function New-DbaDbDataGeneratorConfig { <# .SYNOPSIS Generates a new data generation configuration file. .DESCRIPTION Generates a new data generation configuration file. This file is important to apply any data generation to a table in a database. Read more here: https://sachabarbs.wordpress.com/2018/06/11/bogus-simple-fake-data-tool/ https://github.com/bchavez/Bogus .PARAMETER SqlInstance The target SQL Server instance or instances. .PARAMETER SqlCredential Login to the target instance using alternative credentials. Windows and SQL Authentication supported. Accepts credential objects (Get-Credential) .PARAMETER Database Databases to process through .PARAMETER Table Tables to process. By default all the tables will be processed .PARAMETER ResetIdentity Resets the identity column for a table to it's starting value. By default it will continue with the next identity. .PARAMETER TruncateTable Truncates the tabel befoe inserting the values .PARAMETER Rows Amount of rows that need to be generated. The default is 1000. .PARAMETER Path Path where to save the generated JSON files. The naming convention will be "servername.databasename.tables.json" .PARAMETER Force Forcefully execute commands when needed .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: DataGeneration, Database Author: Sander Stad (@sqlstad, sqlstad.nl) Website: https://dbatools.io Copyright: (c) 2018 by dbatools, licensed under MIT License: MIT https://opensource.org/licenses/MIT .LINK https://dbatools.io/New-DbaDbDataGeneratorConfig .EXAMPLE New-DbaDbDataGeneratorConfig -SqlInstance SQLDB1 -Database DB1 -Path C:\Temp\clone Process all tables and columns for database DB1 on instance SQLDB1 .EXAMPLE New-DbaDbDataGeneratorConfig -SqlInstance SQLDB1 -Database DB1 -Table Customer -Path C:\Temp\clone Process only table Customer with all the columns #> [CmdLetBinding()] param ( [parameter(Mandatory)] [DbaInstanceParameter[]]$SqlInstance, [PSCredential]$SqlCredential, [string[]]$Database, [string[]]$Table, [switch]$ResetIdentity, [switch]$TruncateTable, [int]$Rows = 1000, [parameter(Mandatory)] [string]$Path, [switch]$Force, [switch]$EnableException ) begin { # Get all the different column types try { $columnTypes = Get-Content -Path "$script:PSModuleRoot\bin\datamasking\columntypes.json" | ConvertFrom-Json } catch { Stop-Function -Message "Something went wrong importing the column types" -Continue } # Check if the Path is accessible if (-not (Test-Path -Path $Path)) { try { $null = New-Item -Path $Path -ItemType Directory -Force:$Force } catch { Stop-Function -Message "Could not create Path directory" -ErrorRecord $_ -Target $Path } } else { if ((Get-Item $path) -isnot [System.IO.DirectoryInfo]) { Stop-Function -Message "$Path is not a directory" } } } process { if (Test-FunctionInterrupt) { return } if ($SqlInstance) { $InputObject += Get-DbaDatabase -SqlInstance $SqlInstance -SqlCredential $SqlCredential -Database $Database } $results = @() if ($InputObject.Count -lt 1) { Stop-Function -Message "No databases found" -Target $Database return } foreach ($db in $InputObject) { $server = $db.Parent $tables = @() # Get the tables if ($Table) { $tablecollection = $db.Tables | Where-Object Name -in $Table } else { $tablecollection = $db.Tables } if ($tablecollection.Count -lt 1) { Stop-Function -Message "The database does not contain any tables" -Target $db -Continue } # Loop through the tables foreach ($tableobject in $tablecollection) { Write-Message -Message "Processing table $($tableobject.Name)" -Level Verbose $hasUniqueIndex = $false if ($tableobject.Indexes.IsUnique) { $hasUniqueIndex = $true } $columns = @() # Get the columns [array]$columncollection = $tableobject.Columns foreach ($columnobject in $columncollection) { if ($columnobject.Computed) { Write-Message -Level Verbose -Message "Skipping $columnobject because it is a computed column" continue } if ($columnobject.DataType.Name -eq 'hierarchyid') { Write-Message -Level Verbose -Message "Skipping $columnobject because it is a hierarchyid column" continue } if ($columnobject.DataType.Name -eq 'geography') { Write-Message -Level Verbose -Message "Skipping $columnobject because it is a geography column" continue } if ($columnobject.DataType.Name -eq 'geometry') { Write-Message -Level Verbose -Message "Skipping $columnobject because it is a geometry column" continue } if ($columnobject.DataType.SqlDataType.ToString().ToLower() -eq 'xml') { Write-Message -Level Verbose -Message "Skipping $columnobject because it is a xml column" continue } $dataGenType = $min = $null $columnLength = $columnobject.Datatype.MaximumLength $columnType = $columnobject.DataType.SqlDataType.ToString().ToLower() if ($columnobject.InPrimaryKey -and $columnobject.DataType.SqlDataType.ToString().ToLower() -notmatch 'date') { $min = 2 } if (-not $columnType) { $columnType = $columnobject.DataType.Name.ToLower() } # Get the masking type with the synonym $dataGenType = $columnTypes | Where-Object { $columnobject.Name -in $_.Synonym } if ($dataGenType) { # Make it easier to get the type name $dataGenType = $dataGenType | Select-Object TypeName -ExpandProperty TypeName switch ($dataGenType.ToLower()) { "firstname" { $columns += [PSCustomObject]@{ Name = $columnobject.Name ColumnType = $columnType CharacterString = $null MinValue = $min MaxValue = $columnLength MaskingType = "Name" SubType = "Firstname" Identity = $columnobject.Identity ForeignKey = $columnobject.IsForeignKey Nullable = $columnobject.Nullable } } "lastname" { $columns += [PSCustomObject]@{ Name = $columnobject.Name ColumnType = $columnType CharacterString = $null MinValue = $min MaxValue = $columnLength MaskingType = "Name" SubType = "Lastname" Identity = $columnobject.Identity ForeignKey = $columnobject.IsForeignKey Nullable = $columnobject.Nullable } } "creditcard" { $columns += [PSCustomObject]@{ Name = $columnobject.Name ColumnType = $columnType CharacterString = $null MinValue = $min MaxValue = $columnLength MaskingType = "Finance" SubType = "CreditcardNumber" Identity = $columnobject.Identity ForeignKey = $columnobject.IsForeignKey Nullable = $columnobject.Nullable } } "address" { $columns += [PSCustomObject]@{ Name = $columnobject.Name ColumnType = $columnType CharacterString = $null MinValue = $min MaxValue = $columnLength MaskingType = "Address" SubType = "StreetAddress" Identity = $columnobject.Identity ForeignKey = $columnobject.IsForeignKey Nullable = $columnobject.Nullable } } "city" { $columns += [PSCustomObject]@{ Name = $columnobject.Name ColumnType = $columnType CharacterString = $null MinValue = $min MaxValue = $columnLength MaskingType = "Address" SubType = "City" Identity = $columnobject.Identity ForeignKey = $columnobject.IsForeignKey Nullable = $columnobject.Nullable } } "zipcode" { $columns += [PSCustomObject]@{ Name = $columnobject.Name ColumnType = $columnType CharacterString = $null MinValue = $min MaxValue = $columnLength MaskingType = "Address" SubType = "Zipcode" Identity = $columnobject.Identity ForeignKey = $columnobject.IsForeignKey Nullable = $columnobject.Nullable } } } } else { $type = "Random" switch ($columnType) { { $_ -in "bit", "bool" } { $subType = "Bool" $MaxValue = $null } "bigint" { $subType = "Number" $MaxValue = 9223372036854775807 } "int" { $subType = "Number" $MaxValue = 2147483647 } "date" { $subType = "Date" $MaxValue = $null } "datetime" { $subType = "Date" $MaxValue = $null } "datetime2" { $subType = "Date" $MaxValue = $null } "float" { $subType = "Float" $MaxValue = $null } "smallint" { $subType = "Number" $MaxValue = 32767 } "smalldatetime" { $subType = "Date" $MaxValue = $null } "tinyint" { $subType = "Number" $MaxValue = 255 } "varbinary" { $subType = "Byte" $MaxValue = $columnLength } "varbinary" { $subType = "Byte" $MaxValue = $columnLength } "userdefineddatatype" { if ($columnLength -eq 1) { $subType = "Bool" $MaxValue = $columnLength } else { $subType = "String" $MaxValue = $columnLength } } default { $subType = "String" $MaxValue = $columnLength } } $columns += [PSCustomObject]@{ Name = $columnobject.Name ColumnType = $columnType CharacterString = $null MinValue = $min MaxValue = $MaxValue MaskingType = $type SubType = $subType Identity = $columnobject.Identity ForeignKey = $columnobject.IsForeignKey Nullable = $columnobject.Nullable } } } # Check if something needs to be generated if ($columns) { $tables += [PSCustomObject]@{ Name = $tableobject.Name Schema = $tableobject.Schema Columns = $columns ResetIdentity = [bool]$ResetIdentity TruncateTable = [bool]$TruncateTable HasUniqueIndex = [bool]$hasUniqueIndex Rows = $Rows } } else { Write-Message -Message "No columns match for data generation in table $($tableobject.Name)" -Level Verbose } } # Check if something needs to be generated if ($tables) { $results += [PSCustomObject]@{ Name = $db.Name Tables = $tables } } else { Write-Message -Message "No columns match for data generation in table $($tableobject.Name)" -Level Verbose } } # Write the data to the Path if ($results) { try { $temppath = "$Path\$($server.Name.Replace('\', '$')).$($db.Name).tables.json" if (-not $script:isWindows) { $temppath = $temppath.Replace("\", "/") } Set-Content -Path $temppath -Value ($results | ConvertTo-Json -Depth 5) Get-ChildItem -Path $temppath } catch { Stop-Function -Message "Something went wrong writing the results to the Path" -Target $Path -Continue -ErrorRecord $_ } } else { Write-Message -Message "No tables to save for database $($db.Name) on $($server.Name)" -Level Verbose } } } |