functions/Get-DbaSsisEnvironmentVariable.ps1

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function Get-DbaSsisEnvironmentVariable {
<#
.SYNOPSIS
This command gets specified SSIS Environment and all its variables
 
.DESCRIPTION
This command gets all variables from specified environment from SSIS Catalog. All sensitive values are decrypted.
The function communicates directly with SSISDB database, "SQL Server Integration Services" service isn't queried there.
Each parameter (besides SqlInstance and SqlCredential) acts as the filter to only include or exclude particular element
 
.PARAMETER SqlInstance
SQLServer name or SMO object representing the SQL Server to connect to.
This can be a collection and receive pipeline input to allow the function
to be executed against multiple SQL Server instances.
 
.PARAMETER SqlCredential
SqlCredential object to connect as. If not specified, current Windows login will be used.
 
.PARAMETER Environment
The SSIS Environments names that we want to get variables from
 
.PARAMETER EnvironmentExclude
The SSIS Environments to exclude. Acts as a filter for environments, best used without 'Environment' parameter
to get variables for all environments but excluded ones
 
.PARAMETER Folder
The Folders names that contain the environments
 
.PARAMETER FolderExclude
The Folders names to exclude. Acts as a filter for folders containing environments, best user without 'Folder' parameter
to get variables for all folders but excluded ones
 
.PARAMETER Silent
Use this switch to disable any kind of verbose messages
 
.EXAMPLE
Get-DbaSsisEnvironmentVariable -SqlInstance localhost -Environment DEV -Folder DWH_ETL
 
Gets variables of 'DEV' environment located in 'DWH_ETL' folder on 'localhost' Server
 
.EXAMPLE
Get-DbaSsisEnvironmentVariable -SqlInstance localhost -Environment DEV -Folder DWH_ETL, DEV2, QA
 
Gets variables of 'DEV' environment(s) located in folders 'DWH_ETL', 'DEV2' and 'QA' on 'localhost' server
 
.EXAMPLE
Get-DbaSsisEnvironmentVariable -SqlInstance localhost -Environment DEV -FolderExclude DWH_ETL, DEV2, QA
 
Gets variables of 'DEV' environments located in folders other than 'DWH_ETL', 'DEV2' and 'QA' on 'localhost' server
 
.EXAMPLE
Get-DbaSsisEnvironmentVariable -SqlInstance localhost -Environment DEV, PROD -Folder DWH_ETL, DEV2, QA
 
Gets variables of 'DEV' and 'PROD' environment(s) located in folders 'DWH_ETL', 'DEV2' and 'QA' on 'localhost' server
 
.EXAMPLE
Get-DbaSsisEnvironmentVariable -SqlInstance localhost -EnvironmentExclude DEV, PROD -Folder DWH_ETL, DEV2, QA
 
Gets variables of environments other than 'DEV' and 'PROD' located in folders 'DWH_ETL', 'DEV2' and 'QA' on 'localhost' server
 
.EXAMPLE
Get-DbaSsisEnvironmentVariable -SqlInstance localhost -EnvironmentExclude DEV, PROD -FolderExclude DWH_ETL, DEV2, QA
 
Gets variables of environments other than 'DEV' and 'PROD' located in folders other than 'DWH_ETL', 'DEV2' and 'QA' on 'localhost' server
 
.EXAMPLE
'localhost' | Get-DbaSsisEnvironmentVariable -EnvironmentExclude DEV, PROD
 
Gets all SSIS environments except 'DEV' and 'PROD' from 'localhost' server. The server name comes from pipeline
 
.EXAMPLE
'SRV1', 'SRV3' | Get-DbaSsisEnvironmentVariable
 
Gets all SSIS environments from 'SRV1' and 'SRV3' servers. The server's names come from pipeline
 
.EXAMPLE
'SRV1', 'SRV2' | Get-DbaSsisEnvironmentVariable DEV | Out-GridView
 
Gets all variables from 'DEV' Environment(s) on servers 'SRV1' and 'SRV2' and outputs it as the GridView.
The server names come from the pipeline.
 
.EXAMPLE
'localhost' | Get-DbaSsisEnvironmentVariable -EnvironmentExclude DEV, PROD | Select-Object -Property Name, Value | Where-Object {$_.Name -match '^a'} | Out-GridView
 
Gets all variables from Environments other than 'DEV' and 'PROD' on 'localhost' server,
selects Name and Value properties for variables that names start with letter 'a' and outputs it as the GridView
 
.NOTES
Author: Bartosz Ratajczyk ( @b_ratajczyk )
 
dbatools PowerShell module (https://dbatools.io)
Copyright (C) 2016 Chrissy LeMaire
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.
#>

    [CmdletBinding()]
    Param (
        [parameter(Mandatory, ValueFromPipeline)]
        [Alias('SqlServer', 'ServerInstance')]
        [DbaInstanceParameter[]]$SqlInstance,
        [Parameter(Mandatory = $false)]
        [PSCredential]$SqlCredential,
        [parameter(Mandatory = $false)]
        [object[]]$Environment,
        [parameter(Mandatory = $false)]
        [object[]]$EnvironmentExclude,
        [parameter(Mandatory = $false)]
        [object[]]$Folder,
        [parameter(Mandatory = $false)]
        [object[]]$FolderExclude,
        [switch]$Silent
    )
    
    process {
        foreach ($instance in $SqlInstance) {
            try {
                Write-Message -Message "Connecting to $instance" -Level Verbose
                $server = Connect-SqlInstance -SqlInstance $instance -MinimumVersion 11
            }
            catch {
                Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue
            }
            
            try {
                $ISNamespace = "Microsoft.SqlServer.Management.IntegrationServices"
                
                Write-Message -Message "Connecting to SSIS Catalog on $instance" -Level Verbose
                $SSIS = New-Object "$ISNamespace.IntegrationServices" $server
            }
            catch {
                Stop-Function -Message "Could not connect to SSIS Catalog on $instance or current SMO library does not support SSIS catalog"
                return
            }
            
            Write-Message -Message "Fetching SSIS Catalog and its folders" -Level Verbose
            $catalog = $SSIS.Catalogs | Where-Object { $_.Name -eq "SSISDB" }
            
            # get all folders names if none provided
            if ($null -eq $Folder) {
                $searchFolders = $catalog.Folders.Name
            }
            else {
                $searchFolders = $Folder
            }
            
            # filter unwanted folders
            if ($FolderExclude) {
                $searchFolders = $searchFolders | Where-Object { $_ -notin $FolderExclude }
            }
            
            if ($null -eq $searchFolders) {
                Write-Message -Message "Instance: $instance > -Folder and -FolderExclude filters return an empty collection. Skipping" -Level Warning
            }
            else {
                foreach ($f in $searchFolders) {
                    # get all environments names if none provided
                    if ($null -eq $Environment) {
                        $searchEnvironments = $catalog.Folders.Environments.Name
                    }
                    else {
                        $searchEnvironments = $Environment
                    }
                    
                    #filter unwanted environments
                    if ($EnvironmentExclude) {
                        $searchEnvironments = $searchEnvironments | Where-Object { $_ -notin $EnvironmentExclude }
                    }
                    
                    if ($null -eq $searchEnvironments) {
                        Write-Message -Message "Instance: $instance / Folder: $f > -Environment and -EnvironmentExclude filters return an empty collection. Skipping." -Level Warning
                    }
                    else {
                        $Environments = $catalog.Folders[$f].Environments | Where-Object { $_.Name -in $searchEnvironments }
                        
                        foreach ($e in $Environments) {
                            #encryption handling
                            $encKey = 'MS_Enckey_Env_' + $e.EnvironmentId
                            $encCert = 'MS_Cert_Env_' + $e.EnvironmentId
                            
                            <#
                            SMO does not return sensitive values (gets data from catalog.environment_variables)
                            We have to manualy query internal.environment_variables instead and use symmetric keys
                            within T-SQL code
                            #>

                            
                            $sql = @"
                                OPEN SYMMETRIC KEY $encKey DECRYPTION BY CERTIFICATE $encCert;
 
                                SELECT
                                    ev.variable_id,
                                    ev.name,
                                    ev.description,
                                    ev.type,
                                    ev.sensitive,
                                    value            = ev.value,
                                    ev.sensitive_value,
                                    ev.base_data_type,
                                    decrypted        = decrypted.value
                                FROM internal.environment_variables ev
 
                                    CROSS APPLY (
                                        SELECT
                                            value    = CASE base_data_type
                                                        WHEN 'nvarchar' THEN CONVERT(NVARCHAR(MAX), DECRYPTBYKEY(sensitive_value))
                                                        WHEN 'bit' THEN CONVERT(NVARCHAR(MAX), CONVERT(bit, DECRYPTBYKEY(sensitive_value)))
                                                        WHEN 'datetime' THEN CONVERT(NVARCHAR(MAX), CONVERT(datetime2(0), DECRYPTBYKEY(sensitive_value)))
                                                        WHEN 'single' THEN CONVERT(NVARCHAR(MAX), CONVERT(DECIMAL(38, 18), DECRYPTBYKEY(sensitive_value)))
                                                        WHEN 'float' THEN CONVERT(NVARCHAR(MAX), CONVERT(DECIMAL(38, 18), DECRYPTBYKEY(sensitive_value)))
                                                        WHEN 'decimal' THEN CONVERT(NVARCHAR(MAX), CONVERT(DECIMAL(38, 18), DECRYPTBYKEY(sensitive_value)))
                                                        WHEN 'tinyint' THEN CONVERT(NVARCHAR(MAX), CONVERT(tinyint, DECRYPTBYKEY(sensitive_value)))
                                                        WHEN 'smallint' THEN CONVERT(NVARCHAR(MAX), CONVERT(smallint, DECRYPTBYKEY(sensitive_value)))
                                                        WHEN 'int' THEN CONVERT(NVARCHAR(MAX), CONVERT(INT, DECRYPTBYKEY(sensitive_value)))
                                                        WHEN 'bigint' THEN CONVERT(NVARCHAR(MAX), CONVERT(bigint, DECRYPTBYKEY(sensitive_value)))
                                                    END
                                    ) decrypted
 
                                WHERE environment_id = $($e.EnvironmentId);
 
                                CLOSE SYMMETRIC KEY $encKey;
"@

                            
                            $ssisVariables = $server.Query($sql, "SSISDB")
                            
                            foreach ($variable in $ssisVariables) {
                                if ($variable.sensitive -eq $true) {
                                    $value = $variable.decrypted
                                }
                                else {
                                    $value = $variable.value
                                }
                                
                                [PSCustomObject]@{
                                    ComputerName  = $server.NetName
                                    InstanceName  = $server.ServiceName
                                    SqlInstance   = $server.DomainInstanceName
                                    Folder          = $f
                                    Environment   = $e.Name
                                    Id              = $variable.variable_id
                                    Name          = $variable.Name
                                    Description   = $variable.description
                                    Type          = $variable.type
                                    IsSensitive   = $variable.sensitive
                                    BaseDataType  = $variable.base_data_type
                                    Value          = $value
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}