public/Update-TabularCubeDataSource.ps1
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function Update-TabularCubeDataSource { <# .SYNOPSIS Updates the tabular cube's connection to the source SQL database. .DESCRIPTION Connects to the deployed tabular cube and updates the connection to the source SQL database. Supports the newer PowerQuery style tabular cubes with CompatibilityLevel = 1400. .PARAMETER Server SSAS Server Name or IP address. Include the instance name and port if necessary (e.g. myserver\\myinstance,myport) .PARAMETER CubeDatabase The name of the deployed tabular cube database. .PARAMETER Credential A PSCredential object containing the credentials to connect to the AAS server. .PARAMETER SourceSqlServer The name of the source SQL Server server or its IP address. Include the instance name and port if necessary. .PARAMETER SourceSqlDatabase The name of the database which will act as a source of data for the tabular cube database. .PARAMETER ImpersonationMode Defines how the cube will connect to the data source. Possible options are 'ImpersonateServiceAccount' which connects to the SQL Server database using , or 'ImpersonateAccount' which uses a specific username/password. When using 'ImpersonateAccount' it is best to use a domain based service account with a static password. .PARAMETER ImpersonationAccount The username of the account that will be used to connect to the SQL Server database. Required for ImpersonationMode='ImpersonateAccount'. .PARAMETER ImpersonationPwd The password of the account that will be used to connect to the SQL Server database. Required for ImpersonationMode='ImpersonateAccount'. .EXAMPLE Update-TabularCubeDataSource -Server localhost -CubeDatabase MyCube -SourceSqlServer localhost -SourceSqlDatabase MyDB -ImpersonationMode ImpersonateServiceAccount; .OUTPUTS Returns true if the cube's data source was updated successfully. .LINK https://github.com/DrJohnT/DeployCube .NOTES Written by (c) Dr. John Tunnicliffe, 2019-2021 https://github.com/DrJohnT/DeployCube This PowerShell script is released under the MIT license http://www.opensource.org/licenses/MIT #> [OutputType([bool])] [CmdletBinding()] param ( [String] [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] $Server, [String] [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] $CubeDatabase, [PSCredential] [Parameter(Mandatory = $false)] $Credential = $null, [String] [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] $SourceSqlServer, [String] [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] $SourceSqlDatabase, [Alias("AuthenticationKind")] [String] [Parameter(Mandatory = $true)] [ValidateSet('ImpersonateServiceAccount', 'ImpersonateAccount', 'UsernamePassword')] [ValidateNotNullOrEmpty()] $ImpersonationMode, [String] [Parameter(Mandatory = $false)] $ImpersonationAccount, [Alias("ImpersonationPassword")] [String] [Parameter(Mandatory = $false)] $ImpersonationPwd ) # validate inputs if ($ImpersonationMode -eq 'ImpersonateAccount') { if ([string]::IsNullOrEmpty($ImpersonationAccount)) { throw "ImpersonationAccount not set but ImpersonationMode=ImpersonateAccount"; } if ([string]::IsNullOrEmpty($ImpersonationPwd)) { throw "ImpersonationPassword not set but ImpersonationMode=ImpersonateAccount"; } } # note that Get-CubeDatabaseCompatibilityLevel will throw and error if the cube or server do not exist, which is exactly what we want! [int]$CompatibilityLevel; if ($null -eq $Credential) { $CompatibilityLevel = Get-CubeDatabaseCompatibilityLevel -Server $Server -CubeDatabase $CubeDatabase; $returnResult = Invoke-ASCmd -Server $Server -ConnectionTimeout 1 -Query "<Discover xmlns='urn:schemas-microsoft-com:xml-analysis'><RequestType>TMSCHEMA_DATA_SOURCES</RequestType><Restrictions><RestrictionList><DatabaseName>$CubeDatabase</DatabaseName></RestrictionList></Restrictions><Properties/></Discover>"; } else { $CompatibilityLevel = Get-CubeDatabaseCompatibilityLevel -Server $Server -CubeDatabase $CubeDatabase -Credential $Credential; $returnResult = Invoke-ASCmd -Server $Server -Credential $Credential -ConnectionTimeout 1 -Query "<Discover xmlns='urn:schemas-microsoft-com:xml-analysis'><RequestType>TMSCHEMA_DATA_SOURCES</RequestType><Restrictions><RestrictionList><DatabaseName>$CubeDatabase</DatabaseName></RestrictionList></Restrictions><Properties/></Discover>"; } $returnXml = New-Object -TypeName System.Xml.XmlDocument; $returnXml.LoadXml($returnResult); [System.Xml.XmlNamespaceManager] $nsmgr = $returnXml.NameTable; $nsmgr.AddNamespace('xmlAnalysis', 'urn:schemas-microsoft-com:xml-analysis'); $nsmgr.AddNamespace('rootNS', 'urn:schemas-microsoft-com:xml-analysis:rowset'); $rows = $returnXML.SelectNodes("//xmlAnalysis:return/rootNS:root/rootNS:row", $nsmgr); if ($rows.Count -ge 1) { [string]$DataSourceName = $rows[0].name; $type = $rows[0].type; $description = "${rows[0].description}"; [int]$MaxConnections = $rows[0].MaxConnections; if ($CompatibilityLevel -ge 1400 -and $type -eq '2') { # New style structured (Power Query) connectors $type = "structured" $connObj = ConvertFrom-Json -InputObject $rows[0].ConnectionDetails; $protocol = $connObj.protocol; $authentication = $connObj.authentication; $query = $connObj.query; $CredentialDetails = ConvertFrom-Json -InputObject $rows[0].Credential; $EncryptConnection = $CredentialDetails.EncryptConnection; switch ($ImpersonationMode) { 'ImpersonateServiceAccount' { $credentialNode = [pscustomobject]@{ AuthenticationKind = 'ServiceAccount' path = "$SourceSqlServer;$SourceSqlDatabase" EncryptConnection = $EncryptConnection } } 'ImpersonateAccount' { $credentialNode = [pscustomobject]@{ AuthenticationKind = 'Windows' path = "$SourceSqlServer;$SourceSqlDatabase" Username = $ImpersonationAccount Password = $ImpersonationPwd EncryptConnection = $EncryptConnection } } 'UsernamePassword' { $credentialNode = [pscustomobject]@{ AuthenticationKind = 'UsernamePassword' kind = "SQL" path = "$SourceSqlServer;$SourceSqlDatabase" Username = $ImpersonationAccount Password = $ImpersonationPwd EncryptConnection = $EncryptConnection } } } $dataSource = [pscustomobject]@{ type = $type name = $DataSourceName description = $description connectionDetails = [pscustomobject]@{ protocol = $protocol address = [pscustomobject]@{ server = $SourceSqlServer database = $SourceSqlDatabase } authentication = $authentication query = $query } credential = $credentialNode } } else { # $CompatibilityLevel -lt 1400 $type = 'model < 1200'; # only used in the message below $ExistingConnectionString = $rows[0].ConnectionString; $ConnectionString = Get-SqlConnectionString -SourceSqlServer $SourceSqlServer -SourceSqlDatabase $SourceSqlDatabase -ExistingConnectionString $ExistingConnectionString if ($ImpersonationMode -eq 'ImpersonateAccount') { $dataSource = [pscustomobject]@{ name = $DataSourceName connectionString = $ConnectionString maxConnections = $MaxConnections impersonationMode = $ImpersonationMode account = $ImpersonationAccount password = $ImpersonationPwd } } else { $dataSource = [pscustomobject]@{ name = $DataSourceName connectionString = $ConnectionString maxConnections = $MaxConnections impersonationMode = $ImpersonationMode } } } $tmslStructure = [pscustomobject]@{ createOrReplace = [pscustomobject]@{ object = [pscustomobject]@{ database = $CubeDatabase dataSource = $DataSourceName } dataSource = $dataSource } } $tmsl = $tmslStructure | ConvertTo-Json -Depth 5; #Write-Host $tmsl # now send the createOrReplace command to the cube Write-Verbose "Updating cube data source $DataSourceName with a connection to $SourceSqlServer.$SourceSqlDatabase using a $type createOrReplace TMSL statement"; if ($null -eq $Credential) { $returnResult = Invoke-ASCmd -Server $Server -ConnectionTimeout 10 -Query $tmsl; } else { $returnResult = Invoke-ASCmd -Server $Server -Credential $Credential -ConnectionTimeout 10 -Query $tmsl; } try { $returnXml.LoadXml($returnResult); $nsmgr = $returnXml.NameTable; $nsmgr.AddNamespace('xmlAnalysis', 'urn:schemas-microsoft-com:xml-analysis'); $nsmgr.AddNamespace('rootNS', 'urn:schemas-microsoft-com:xml-analysis:empty'); $resultNodes = $returnXML.SelectNodes("//xmlAnalysis:return/rootNS:root", $nsmgr); $ErrorMsg = $resultNodes[0].Messages.Error.Description; if ("$ErrorMsg" -eq "") { return $true; } else { Write-Error $ErrorMsg; return $false; } } catch { throw "Executing createOrReplace TMSL returned incorrectly formatted XML"; } } else { throw "CubeDatabase $CubeDatabase not found or does not have a data source"; } } |