functions/Export-DbaScript.ps1

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
function Export-DbaScript {
    <#
        .SYNOPSIS
            Exports scripts from SQL Management Objects (SMO)
 
        .DESCRIPTION
            Exports scripts from SQL Management Objects
 
        .PARAMETER InputObject
            A SQL Managment Object such as the one returned from Get-DbaLogin
 
        .PARAMETER Path
            The output filename and location. If no path is specified, one will be created. If the file already exists, the output will be appended.
 
        .PARAMETER Encoding
            Specifies the file encoding. The default is UTF8.
 
            Valid values are:
            -- ASCII: Uses the encoding for the ASCII (7-bit) character set.
            -- BigEndianUnicode: Encodes in UTF-16 format using the big-endian byte order.
            -- Byte: Encodes a set of characters into a sequence of bytes.
            -- String: Uses the encoding type for a string.
            -- Unicode: Encodes in UTF-16 format using the little-endian byte order.
            -- UTF7: Encodes in UTF-7 format.
            -- UTF8: Encodes in UTF-8 format.
            -- Unknown: The encoding type is unknown or invalid. The data can be treated as binary.
 
        .PARAMETER Passthru
            Output script to console
 
        .PARAMETER ScriptingOptionsObject
            An SMO Scripting Object that can be used to customize the output - see New-DbaScriptingOption
 
        .PARAMETER WhatIf
            Shows what would happen if the command were to run. No actions are actually performed
 
        .PARAMETER NoClobber
            Do not overwrite file
 
        .PARAMETER Append
            Append to file
 
        .PARAMETER Confirm
            Prompts you for confirmation before executing any changing operations within the command
 
        .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: Migration, Backup, Export
 
            Website: https://dbatools.io
            Copyright: (C) Chrissy LeMaire, clemaire@gmail.com
            License: MIT https://opensource.org/licenses/MIT
 
        .LINK
            https://dbatools.io/Export-DbaScript
 
        .EXAMPLE
            Get-DbaAgentJob -SqlInstance sql2016 | Export-DbaScript
 
            Exports all jobs on the SQL Server sql2016 instance using a trusted connection - automatically determines filename as .\sql2016-Job-Export-date.sql
 
        .EXAMPLE
            Get-DbaAgentJob -SqlInstance sql2016 | Export-DbaScript -Path C:\temp\export.sql -Append
 
            Exports all jobs on the SQL Server sql2016 instance using a trusted connection - Will append the output to the file C:\temp\export.sql if it already exists
 
        .EXAMPLE
            Get-DbaAgentJob -SqlInstance sql2016 -Job syspolicy_purge_history, 'Hourly Log Backups' -SqlCredential (Get-Credential sqladmin) | Export-DbaScript -Path C:\temp\export.sql
 
            Exports only syspolicy_purge_history and 'Hourly Log Backups' to C:temp\export.sql and uses the SQL login "sqladmin" to login to sql2016
 
        .EXAMPLE
            Get-DbaAgentJob -SqlInstance sql2014 | Export-DbaJob -Passthru | ForEach-Object { $_.Replace('sql2014','sql2016') } | Set-Content -Path C:\temp\export.sql
 
            Exports jobs and replaces all instances of the servername "sql2014" with "sql2016" then writes to C:\temp\export.sql
 
        .EXAMPLE
            $options = New-DbaScriptingOption
            $options.ScriptDrops = $false
            $options.WithDependencies = $true
            Get-DbaTable -SqlInstance sql2017 -Database PerformanceStore | Export-DbaScript -ScriptingOptionsObject $options
 
            Exports Agent Jobs with the Scripting Options ScriptDrops set to $false and WithDependencies set to $true.
    #>

    [CmdletBinding(SupportsShouldProcess = $true)]
    param (
        [parameter(Mandatory = $true, ValueFromPipeline = $true)]
        [object[]]$InputObject,
        [Alias("ScriptingOptionObject")]
        [Microsoft.SqlServer.Management.Smo.ScriptingOptions]$ScriptingOptionsObject,
        [string]$Path,
        [ValidateSet('ASCII', 'BigEndianUnicode', 'Byte', 'String', 'Unicode', 'UTF7', 'UTF8', 'Unknown')]
        [string]$Encoding = 'UTF8',
        [switch]$Passthru,
        [switch]$NoClobber,
        [switch]$Append,
        [Alias('Silent')]
        [switch]$EnableException
    )

    begin {
        $executingUser = [Security.Principal.WindowsIdentity]::GetCurrent().Name
        $commandName = $MyInvocation.MyCommand.Name
        $timeNow = (Get-Date -uformat "%m%d%Y%H%M%S")
        $prefixArray = @()
    }

    process {
        foreach ($object in $InputObject) {

            $typename = $object.GetType().ToString()

            if ($typename.StartsWith('Microsoft.SqlServer.')) {
                $shortype = $typename.Split(".")[-1]
            }
            else {
                Stop-Function -Message "InputObject is of type $typename which is not a SQL Management Object. Only SMO objects are supported." -Category InvalidData -Target $object -Continue
            }

            if ($shortype -in "LinkedServer", "Credential", "Login") {
                Write-Message -Level Warning -Message "Support for $shortype is limited at this time. No passwords, hashed or otherwise, will be exported if they exist."
            }

            # Just gotta add the stuff that Nic Cain added to his script

            if ($shortype -eq "Configuration") {
                Write-Message -Level Warning -Message "Support for $shortype is limited at this time."
            }

            # Find the server object to pass on to the function
            $parent = $object.parent

            do {
                if ($parent.Urn.Type -ne "Server") {
                    $parent = $parent.Parent
                }
            }
            until (($parent.Urn.Type -eq "Server") -or (-not $parent))

            if (-not $parent) {
                Stop-Function -Message "Failed to find valid SMO server object in input: $object." -Category InvalidData -Target $object -Continue
            }

            try {
                $server = $parent
                $serverName = $server.Name.Replace('\', '$')

                if ($ScriptingOptionsObject) {
                    $scripter = New-Object Microsoft.SqlServer.Management.Smo.Scripter $server
                    $scripter.Options = $ScriptingOptionsObject
                }

                if (!$passthru) {
                    if ($path) {
                        $actualPath = $path
                    }
                    else {
                        $actualPath = "$serverName-$shortype-Export-$timeNow.sql"
                    }
                }

                $prefix = "/*`n`tCreated by $executingUser using dbatools $commandName for objects on $serverName at $(Get-Date)`n`tSee https://dbatools.io/$commandName for more information`n*/"

                if ($passthru) {
                    $prefix | Out-String
                }
                else {
                    if ($prefixArray -notcontains $actualPath) {

                        if ((Test-Path -Path $actualPath) -and $NoClobber) {
                            Stop-Function -Message "File already exists. If you want to overwrite it remove the -NoClobber parameter. If you want to append data, please Use -Append parameter." -Target $actualPath -Continue
                        }
                        #Only at the first output we use the passed variables Append & NoClobber. For this execution the next ones need to buse -Append
                        $prefix | Out-File -FilePath $actualPath -Encoding $encoding -Append:$Append -NoClobber:$NoClobber
                        $prefixArray += $actualPath
                    }
                }

                if ($Pscmdlet.ShouldProcess($env:computername, "Exporting $object from $server to $actualPath")) {
                    Write-Message -Level Verbose -Message "Exporting $object"

                    if ($passthru) {
                        if ($ScriptingOptionsObject) {
                            foreach ($script in $scripter.EnumScript($object)) {
                                $script | Out-String
                            }
                        }
                        else {
                            $object.Script() | Out-String
                        }
                    }
                    else {
                        if ($ScriptingOptionsObject) {
                            foreach ($script in $scripter.EnumScript($object)) {
                                $script | Out-File -FilePath $actualPath -Encoding $encoding -Append
                            }
                        }
                        else {
                            $object.Script() | Out-File -FilePath $actualPath -Encoding $encoding -Append
                        }
                    }
                }

                if (!$passthru) {
                    Write-Message -Level Output -Message "Exported $object on $($server.Name) to $actualPath"
                }
            }
            catch {
                $message = $_.Exception.InnerException.InnerException.InnerException.Message
                if (-not $message) {
                    $message = $_.Exception
                }
                Stop-Function -Message "Failure on $($server.Name) | $message" -Target $server
            }
        }
    }
}