functions/Publish-DbaDacpac.ps1

Function Publish-DbaDacpac {
        <#
        .SYNOPSIS
        The Publish-Database command takes a dacpac which is the output from an SSDT project and publishes it to a database.
        Changing the schema to match the dacpac and also to run any scripts in the dacpac (pre/post deploy scripts)
         
        .DESCRIPTION
               Deploying a dacpac uses the DacFx which historically needed to be installed on a machine prior to use.
               In 2016 the DacFx was supplied by Microsoft as a nuget package and this uses that nuget package.
         
        .PARAMETER SqlInstance
        SQL Server name or SMO object representing the SQL Server to connect to and publish to.
 
        .PARAMETER SqlCredential
        Allows you to login to servers using alternative logins instead Integrated, accepts Credential object created by Get-Credential
         
        .PARAMETER Path
            Mandatory. The path to the DACPAC.
         
        .PARAMETER PublishXml
            Mandatory. Publish profile which will include options and sqlCmdVariables.
         
        .PARAMETER Database
            Mandatory. The name of the database you are publishing.
         
        .PARAMETER ConnectionString
        The connection string to the database you are upgrading.
 
        Alternatively, you can provide a SqlInstance (and optionally SqlCredential) and the script will connect and generate the connectionstring.
     
        .PARAMETER GenerateDeploymentScript
            Determines whether or not to create publish script.
         
        .PARAMETER GenerateDeploymentReport
            Determines whether or not to create publish xml report.
         
        .PARAMETER OutputPath
            Output path for xyz
         
        .PARAMETER ScriptOnly
            Optional. Specify this to create only the change scripts.
         
        .PARAMETER IncludeSqlCmdVars
            Optional. If there are SqlCmdVars in the publish.xml that need to have their values overwritten.
         
        .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, Database, Dacpac
            Author: Richie lee (@bzzzt_io)
 
            Website: https://dbatools.io
            Copyright: (C) Chrissy LeMaire, clemaire@gmail.com
            License: GNU GPL v3 https://opensource.org/licenses/GPL-3.0
        .LINK
            https://dbatools.io/Publish-DbaDacpac
 
        .EXAMPLE
            Publish-DbaDacpac -SqlInstance sql2017 -Database WideWorldImporters -Path C:\temp\sql2016-WideWorldImporters.dacpac -PublishXml C:\temp\sql2016-WideWorldImporters-publish.xml
             
            Updates WideWorldImporters on sql2017 from the sql2016-WideWorldImporters.dacpac using the sql2016-WideWorldImporters-publish.xml publish profile
         
        .EXAMPLE
               Export-DbaDacpac -SqlInstance sql2016 -Database db2 | Publish-DbaDacpac -PublishXml C:\temp\sql2016-db2-publish.xml -Database db1, db2 -SqlInstance sql2017
         
            Exports the .dacpac to $home\Documents\sql2016-db2.dacpac then publishes it to the sql2017 server database db2
     
  #>

    [CmdletBinding()]
    param (
        [Alias("ServerInstance", "SqlServer")]
        [DbaInstance[]]$SqlInstance,
        [Alias("Credential")]
        [PSCredential]$SqlCredential,
        [Parameter(Mandatory, ValueFromPipelineByPropertyName)]
        [string]$Path,
        [Parameter(Mandatory)]
        [string]$PublishXml,
        [Parameter(Mandatory, ValueFromPipelineByPropertyName)]
        [string[]]$Database,
        [string[]]$ConnectionString,
        [switch]$GenerateDeploymentScript,
        [switch]$GenerateDeploymentReport,
        [Switch]$ScriptOnly,
        [string]$OutputPath = "$home\Documents",
        [switch]$IncludeSqlCmdVars,
        [switch]$EnableException
    )
    
    begin {
        if ((Test-Bound -Not -ParameterName SqlInstance) -and (Test-Bound -Not -ParameterName ConnectionString)) {
            Stop-Function -Message "You must specify either SqlInstance or ConnectionString"
        }
        
        if ((Test-Bound -ParameterName GenerateDeploymentScript) -or (Test-Bound -ParameterName GenerateDeploymentReport)) {
            $defaultcolumns = 'ComputerName','InstanceName','SqlInstance', 'Database', 'Dacpac', 'PublishXml', 'Result', 'DatabaseScriptPath', 'MasterDbScriptPath', 'DeploymentReport', 'DeployOptions'
        }
        else {
            $defaultcolumns = 'ComputerName', 'InstanceName','SqlInstance', 'Database', 'Dacpac', 'PublishXml', 'Result'
        }
        
        function Get-ServerName ($connstring) {
            $builder = New-Object System.Data.Common.DbConnectionStringBuilder
            $builder.set_ConnectionString($connstring)
            $instance = $builder['data source']
            
            if (-not $instance) {
                $instance = $builder['server']
            }
            
            return $instance.ToString().Replace('\', '-')
        }
    }
    
    process {
        if (Test-FunctionInterrupt) { return }
        
        if (-not (Test-Path -Path $Path)) {
            Stop-Function -Message "$Path not found!"
        }
        
        if (-not (Test-Path -Path $PublishXml)) {
            Stop-Function -Message "$PublishXml not found!"
        }
        
        foreach ($instance in $sqlinstance) {
            try {
                Write-Message -Level Verbose -Message "Connecting to $instance."
                $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $sqlcredential
            }
            catch {
                Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue
            }
            
            $db = $server.Databases | Where-Object Name -in $Database
            
            if (-not $db.name) {
                Stop-Function -Message "Database $Database does not exist on $instance" -Target $instance -Continue
            }
            
            $ConnectionString += $server.ConnectionContext.ConnectionString.Replace('"', "'")
        }
        
        try {
            $dacPackage = [Microsoft.SqlServer.Dac.DacPackage]::Load($Path)
        }
        catch {
            Stop-Function -Message "Could not load package" -ErrorRecord $_
        }
        
        try {
            $dacProfile = [Microsoft.SqlServer.Dac.DacProfile]::Load($PublishXml)
        }
        catch {
            Stop-Function -Message "Could not load profile" -ErrorRecord $_
        }
        
        if ($IncludeSqlCmdVars) {
            Get-SqlCmdVars -SqlCommandVariableValues $dacProfile.DeployOptions.SqlCommandVariableValues
        }
        
        foreach ($connstring in $ConnectionString) {
            $cleaninstance = Get-ServerName $connstring
            $instance = $cleaninstance.ToString().Replace('-', '\')
            
            foreach ($dbname in $database) {
                if ($OutputPath) {
                    $timeStamp = (Get-Date).ToString("yyMMdd_HHmmss_f")
                    $DatabaseScriptPath = Join-Path $OutputPath "$cleaninstance-$dbname`_DeployScript_$timeStamp.sql"
                    $MasterDbScriptPath = Join-Path $OutputPath "$cleaninstance-$dbname`_Master.DeployScript_$timeStamp.sql"
                    $DeploymentReport = Join-Path $OutputPath "$cleaninstance-$dbname`_Result.DeploymentReport_$timeStamp.xml"
                }
                
                if ($connstring -notmatch 'Database=') {
                    $connstring = "$connstring;Database=$dbname"
                }
                
                try {
                    $dacServices = New-Object Microsoft.SqlServer.Dac.DacServices $connstring
                }
                catch {
                    Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $server -Continue
                }
                
                $options = @{
                    GenerateDeploymentScript    = $GenerateDeploymentScript
                    GenerateDeploymentReport    = $GenerateDeploymentReport
                    DatabaseScriptPath            = $DatabaseScriptPath
                    MasterDbScriptPath            = $MasterDbScriptPath
                    DeployOptions                = $dacProfile.DeployOptions
                }
                
                try {
                    $global:output = @()
                    Register-ObjectEvent -InputObject $dacServices -EventName "Message" -SourceIdentifier "msg" -Action { $global:output += $EventArgs.Message.Message } | Out-Null
                    if ($ScriptOnly) {
                        if (($GenerateDeploymentScript -eq $false) -and ($GenerateDeploymentReport -eq $false)) {
                            $message = "Specify at least one of GenerateDeploymentScript or GenerateDeploymentReport to be true when using ScriptOnly!"
                        }
                        else {
                            Write-Message -Level Verbose -Message "Generating script..."
                            $result = $dacServices.Script($dacPackage, $dbname, $options)
                        }
                    }
                    else {
                        Write-Message -Level Verbose -Message "Executing Deployment..."
                        $result = $dacServices.Publish($dacPackage, $dbname, $options)
                    }
                }
                catch [Microsoft.SqlServer.Dac.DacServicesException] {
                    $message = ('Deployment failed: {0} `nReason: {1}' -f $_.Exception.Message, $_.Exception.InnerException.Message)
                }
                finally {
                    Unregister-Event -SourceIdentifier "msg"
                    if ($message) {
                        Stop-Function -Message $message
                    }
                    if ($GenerateDeploymentReport) {
                        $result.DeploymentReport | Out-File $DeploymentReport
                        Write-Message -Level Verbose -Message "Deployment Report - $DeploymentReport"
                    }
                    if ($GenerateDeploymentScript) {
                        Write-Message -Level Verbose -Message "Database change script - $DatabaseScriptPath"
                        if ((Test-Path $MasterDbScriptPath)) {
                            Write-Message -Level Verbose -Message "Master database change script - $($result.MasterDbScript)"
                        }
                    }
                    $server = [dbainstance]$instance
                    
                    [pscustomobject]@{
                        ComputerName   = $server.ComputerName
                        InstanceName   = $server.InstanceName
                        SqlInstance    = $server.FullName
                        Database          = $dbname
                        Result              = ($global:output -join "`r`n" | Out-String).Trim()
                        Dacpac              = $Path
                        PublishXml          = $PublishXml
                        ConnectionString  = $connstring
                        DatabaseScriptPath = $DatabaseScriptPath
                        MasterDbScriptPath = $MasterDbScriptPath
                        DeploymentReport  = $DeploymentReport
                        DeployOptions      = $dacProfile.DeployOptions
                    } | Select-DefaultView -Property $defaultcolumns
                }
            }
        }
    }
}