dbatools

0.9.385

functions/Install-DbaMaintenanceSolution.ps1

#ValidationTags#CodeStyle,Messaging,FlowControl,Pipeline#
function Install-DbaMaintenanceSolution {
    <#
        .SYNOPSIS
            Download and Install SQL Server Maintenance Solution created by Ola Hallengren (https://ola.hallengren.com)
        .DESCRIPTION
            This script will download and install the latest version of SQL Server Maintenance Solution created by Ola Hallengren
 
        .PARAMETER SqlInstance
            The target SQL Server instance onto which the Maintenance Solution will be installed.
 
        .PARAMETER SqlCredential
            Login to the target instance using alternative credentials. Windows and SQL Authentication supported. Accepts credential objects (Get-Credential)
 
        .PARAMETER Database
            The database where Ola Hallengren's solution will be installed. Defaults to master.
 
        .PARAMETER BackupLocation
            Location of the backup root directory. If this is not supplied, the default backup directory will be used.
 
        .PARAMETER CleanupTime
            Time in hours, after which backup files are deleted.
 
        .PARAMETER OutputFileDirectory
            Specify the output file directory where the Maintenance Solution will write to.
 
        .PARAMETER ReplaceExisting
            If this switch is enabled, objects already present in the target database will be dropped and recreated.
 
        .PARAMETER LogToTable
            If this switch is enabled, the Maintenance Solution will be configured to log commands to a table.
 
        .PARAMETER Solution
            Specifies which portion of the Maintenance solution to install. Valid values are All (full solution), Backup, IntegrityCheck and IndexOptimize.
 
        .PARAMETER InstallJobs
            If this switch is enabled, the corresponding SQL Agent Jobs will be created.
 
        .PARAMETER LocalFile
            Specifies the path to a local file to install Ola's solution from. This *should* be the zipfile as distributed by the maintainers.
            If this parameter is not specified, the latest version will be downloaded and installed from https://github.com/olahallengren/sql-server-maintenance-solution
 
        .PARAMETER Force
            If this switch is enabled, the Ola's solution will be downloaded from the internet even if previously cached.
 
       .PARAMETER WhatIf
            If this switch is enabled, no actions are performed but informational messages will be displayed that explain what would happen if the command were to run.
 
        .PARAMETER Confirm
            If this switch is enabled, you will be prompted for confirmation before executing any operations that change state.
 
        .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: Ola, Maintenance
            Author: Viorel Ciucu, viorel.ciucu@gmail.com, cviorel.com
 
            Website: https://dbatools.io
            Copyright: (C) Chrissy LeMaire, clemaire@gmail.com
            License: MIT https://opensource.org/licenses/MIT
 
        .LINK
            http://dbatools.io/Install-DbaMaintenanceSolution
 
        .EXAMPLE
            Install-DbaMaintenanceSolution -SqlInstance RES14224 -Database DBA -CleanupTime 72
 
            Installs Ola Hallengren's Solution objects on RES14224 in the DBA database.
            Backups will default to the default Backup Directory.
            If the Maintenance Solution already exists, the script will be halted.
 
        .EXAMPLE
            Install-DbaMaintenanceSolution -SqlInstance RES14224 -Database DBA -BackupLocation "Z:\SQLBackup" -CleanupTime 72
 
            This will create the Ola Hallengren's Solution objects. Existing objects are not affected in any way.
 
        .EXAMPLE
            Install-DbaMaintenanceSolution -SqlInstance RES14224 -Database DBA -BackupLocation "Z:\SQLBackup" -CleanupTime 72 -ReplaceExisting
 
            This will drop and then recreate the Ola Hallengren's Solution objects
            The cleanup script will drop and recreate:
                - TABLE [dbo].[CommandLog]
                - STORED PROCEDURE [dbo].[CommandExecute]
                - STORED PROCEDURE [dbo].[DatabaseBackup]
                - STORED PROCEDURE [dbo].[DatabaseIntegrityCheck]
                - STORED PROCEDURE [dbo].[IndexOptimize]
 
            The following SQL Agent jobs will be deleted:
                - 'Output File Cleanup'
                - 'IndexOptimize - USER_DATABASES'
                - 'sp_delete_backuphistory'
                - 'DatabaseBackup - USER_DATABASES - LOG'
                - 'DatabaseBackup - SYSTEM_DATABASES - FULL'
                - 'DatabaseBackup - USER_DATABASES - FULL'
                - 'sp_purge_jobhistory'
                - 'DatabaseIntegrityCheck - SYSTEM_DATABASES'
                - 'CommandLog Cleanup'
                - 'DatabaseIntegrityCheck - USER_DATABASES'
                - 'DatabaseBackup - USER_DATABASES - DIFF'
    #>
    [CmdletBinding(SupportsShouldProcess = $true, ConfirmImpact = "High")]
    param (
        [parameter(Mandatory = $true, ValueFromPipeline = $true)]
        [Alias('ServerInstance', 'SqlServer')]
        [DbaInstance[]]$SqlInstance,
        [PSCredential]$SqlCredential,
        [object]$Database = "master",
        [string]$BackupLocation,
        [int]$CleanupTime,
        [string]$OutputFileDirectory,
        [switch]$ReplaceExisting,
        [switch]$LogToTable,
        [ValidateSet('All', 'Backup', 'IntegrityCheck', 'IndexOptimize')]
        [string]$Solution = 'All',
        [switch]$InstallJobs,
        [string]$LocalFile,
        [switch]$Force,
        [Alias('Silent')]
        [switch]$EnableException
    )

    begin {
        $DbatoolsData = Get-DbaConfigValue -FullName "Path.DbatoolsData"

        $url = "https://github.com/olahallengren/sql-server-maintenance-solution/archive/master.zip"

        $temp = ([System.IO.Path]::GetTempPath()).TrimEnd("\")
        $zipfile = "$temp\ola-sql-server-maintenance-solution.zip"
        $zipfolder = "$temp\ola-sql-server-maintenance-solution\"
        $OLALocation = "OLA_SQL_MAINT_master"
        $LocalCachedCopy = Join-Path -Path $DbatoolsData -ChildPath $OLALocation
        if ($LocalFile) {
            if (-not(Test-Path $LocalFile)) {
                Stop-Function -Message "$LocalFile doesn't exist"
                return
            }
            if (-not($LocalFile.EndsWith('.zip'))) {
                Stop-Function -Message "$LocalFile should be a zip file"
                return
            }
        }

        if ($Force -or -not(Test-Path -Path $LocalCachedCopy -PathType Container) -or $LocalFile) {
            # Force was passed, or we don't have a local copy, or $LocalFile was passed
            if ($zipfile | Test-Path) {
                Remove-Item -Path $zipfile -ErrorAction SilentlyContinue
            }
            if ($zipfolder | Test-Path) {
                Remove-Item -Path $zipfolder -Recurse -ErrorAction SilentlyContinue
            }

            $null = New-Item -ItemType Directory -Path $zipfolder -ErrorAction SilentlyContinue
            if ($LocalFile) {
                Unblock-File $LocalFile -ErrorAction SilentlyContinue
                Expand-Archive -Path $LocalFile -DestinationPath $zipfolder -Force
            }
            else {
                Write-Message -Level Verbose -Message "Downloading and unzipping Ola's maintenance solution zip file."

                try {
                    $oldSslSettings = [System.Net.ServicePointManager]::SecurityProtocol
                    [System.Net.ServicePointManager]::SecurityProtocol = "Tls12"
                    try {
                        $wc = New-Object System.Net.WebClient
                        $wc.DownloadFile($url, $zipfile)
                    }
                    catch {
                        # Try with default proxy and usersettings
                        $wc = New-Object System.Net.WebClient
                        $wc.Proxy.Credentials = [System.Net.CredentialCache]::DefaultNetworkCredentials
                        $wc.DownloadFile($url, $zipfile)
                    }
                    [System.Net.ServicePointManager]::SecurityProtocol = $oldSslSettings

                    # Unblock if there's a block
                    Unblock-File $zipfile -ErrorAction SilentlyContinue

                    Expand-Archive -Path $zipfile -DestinationPath $zipfolder -Force

                    Remove-Item -Path $zipfile
                }
                catch {
                    Stop-Function -Message "Couldn't download Ola's maintenance solution. Download and install manually from https://github.com/olahallengren/sql-server-maintenance-solution/archive/master.zip." -ErrorRecord $_
                    return
                }
            }

            ## Copy it into local area
            if (Test-Path -Path $LocalCachedCopy -PathType Container) {
                Remove-Item -Path (Join-Path $LocalCachedCopy '*') -Recurse -ErrorAction SilentlyContinue
            }
            else {
                $null = New-Item -Path $LocalCachedCopy -ItemType Container
            }
            Copy-Item -Path $zipfolder -Destination $LocalCachedCopy -Recurse
        }

        function Get-DbaOlaWithParameters($listOfFiles) {

            $fileContents = @{}
            foreach ($file in $listOfFiles) {
                $fileContents[$file] = Get-Content -Path $file -Raw
            }

            # In which database we install
            if ($Database -ne 'master') {
                $findDB = 'USE [master]'
                $replaceDB = 'USE [' + $Database + ']'
                foreach ($file in $fileContents.Keys) {
                    $fileContents[$file] = $fileContents[$file].Replace($findDB, $replaceDB)
                }
            }

            # Backup location
            if ($BackupLocation) {
                $findBKP = 'SET @BackupDirectory = NULL'
                $replaceBKP = 'SET @BackupDirectory = N''' + $BackupLocation + ''''
                foreach ($file in $fileContents.Keys) {
                    $fileContents[$file] = $fileContents[$file].Replace($findBKP, $replaceBKP)
                }
            }

            # CleanupTime
            if ($CleanupTime -ne 0) {
                $findCleanupTime = 'SET @CleanupTime = NULL'
                $replaceCleanupTime = 'SET @CleanupTime = ' + $CleanupTime
                foreach ($file in $fileContents.Keys) {
                    $fileContents[$file] = $fileContents[$file].Replace($findCleanupTime, $replaceCleanupTime)
                }
            }

            # OutputFileDirectory
            if ($OutputFileDirectory.Length -gt 0) {
                $findOutputFileDirectory = 'SET @OutputFileDirectory = NULL'
                $replaceOutputFileDirectory = 'SET @OutputFileDirectory = N''' + $OutputFileDirectory + ''''
                foreach ($file in $fileContents.Keys) {
                    $fileContents[$file] = $fileContents[$file].Replace($findOutputFileDirectory, $replaceOutputFileDirectory)
                }
            }

            # LogToTable
            if (!$LogToTable) {
                $findLogToTable = "SET @LogToTable = 'Y'"
                $replaceLogToTable = "SET @LogToTable = 'N'"
                foreach ($file in $fileContents.Keys) {
                    $fileContents[$file] = $fileContents[$file].Replace($findLogToTable, $replaceLogToTable)
                }
            }

            # Create Jobs
            if ($InstallJobs -eq $false) {
                $findCreateJobs = "SET @CreateJobs = 'Y'"
                $replaceCreateJobs = "SET @CreateJobs = 'N'"
                foreach ($file in $fileContents.Keys) {
                    $fileContents[$file] = $fileContents[$file].Replace($findCreateJobs, $replaceCreateJobs)
                }
            }
            return $fileContents
        }
    }

    process {

        foreach ($instance in $SqlInstance) {
            try {
                Write-Message -Level Verbose -Message "Connecting to $instance."
                $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $SqlCredential -NonPooled
            }
            catch {
                Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue
            }

            if ((Test-Bound -Parameter ReplaceExisting -Not)) {
                $procs = Get-DbaSqlModule -SqlInstance $server -Database $Database | Where-Object Name -in 'CommandExecute', 'DatabaseBackup', 'DatabaseIntegrityCheck', 'IndexOptimize'
                $table = Get-DbaTable -SqlInstance $server -Database $Database -Table CommandLog -IncludeSystemDBs  | Where-Object Database -eq $Database

                if ($null -ne $procs -or $null -ne $table) {
                    Stop-Function -Message "The Maintenance Solution already exists in $Database on $instance. Use -ReplaceExisting to automatically drop and recreate."
                    return
                }
            }

            if ((Test-Bound -Parameter BackupLocation -Not)) {
                $BackupLocation = (Get-DbaDefaultPath -SqlInstance $server).Backup
            }

            Write-Message -Level Output -Message "Ola Hallengren's solution will be installed on database $Database."

            $db = $server.Databases[$Database]

            if ($InstallJobs -and $Solution -ne 'All') {
                Stop-Function -Message "To create SQL Agent jobs you need to use '-Solution All' and '-InstallJobs'."
                return
            }

            if ($ReplaceExisting -eq $true) {
                Write-Message -Level Verbose -Message "If Ola Hallengren's scripts are found, we will drop and recreate them!"
            }

            if ($CleanupTime -ne 0 -and $InstallJobs -eq $false) {
                Write-Message -Level Output -Message "CleanupTime $CleanupTime value will be ignored because you chose not to create SQL Agent Jobs."
            }

            # Required
            $required = @('CommandExecute.sql')

            if ($LogToTable) {
                $required += 'CommandLog.sql'
            }

            if ($Solution -match 'Backup') {
                $required += 'DatabaseBackup.sql'
            }

            if ($Solution -match 'IntegrityCheck') {
                $required += 'DatabaseIntegrityCheck.sql'
            }

            if ($Solution -match 'IndexOptimize') {
                $required += 'IndexOptimize.sql'
            }

            if ($Solution -match 'All') {
                $required += 'MaintenanceSolution.sql'
            }

            $temp = ([System.IO.Path]::GetTempPath()).TrimEnd("\")
            $zipfile = "$temp\ola.zip"


            $listOfFiles = Get-ChildItem -Filter "*.sql" -Path $LocalCachedCopy | Select-Object -ExpandProperty FullName

            $fileContents = Get-DbaOlaWithParameters -listOfFiles $listOfFiles

            $CleanupQuery = $null
            if ($ReplaceExisting) {
                [string]$CleanupQuery = $("
                            IF OBJECT_ID('[dbo].[CommandLog]', 'U') IS NOT NULL
                                DROP TABLE [dbo].[CommandLog];
                            IF OBJECT_ID('[dbo].[CommandExecute]', 'P') IS NOT NULL
                                DROP PROCEDURE [dbo].[CommandExecute];
                            IF OBJECT_ID('[dbo].[DatabaseBackup]', 'P') IS NOT NULL
                                DROP PROCEDURE [dbo].[DatabaseBackup];
                            IF OBJECT_ID('[dbo].[DatabaseIntegrityCheck]', 'P') IS NOT NULL
                                DROP PROCEDURE [dbo].[DatabaseIntegrityCheck];
                            IF OBJECT_ID('[dbo].[IndexOptimize]', 'P') IS NOT NULL
                                DROP PROCEDURE [dbo].[IndexOptimize];
                            ")

                Write-Message -Level Output -Message "Dropping objects created by Ola's Maintenance Solution"
                $null = $db.Query($CleanupQuery)

                # Remove Ola's Jobs
                if ($InstallJobs -and $ReplaceExisting) {
                    Write-Message -Level Output -Message "Removing existing SQL Agent Jobs created by Ola's Maintenance Solution."
                    $jobs = Get-DbaAgentJob -SqlInstance $server | Where-Object Description -match "hallengren"
                    if ($jobs) {
                        $jobs | ForEach-Object { Remove-DbaAgentJob -SqlInstance $instance -Job $_.name }
                    }
                }
            }

            try {
                Write-Message -Level Output -Message "Installing on server $instance, database $Database."

                foreach ($file in $fileContents.Keys) {
                    $shortFileName = Split-Path $file -Leaf
                    if ($required.Contains($shortFileName)) {
                        Write-Message -Level Output -Message "Installing $shortFileName."
                        $sql = $fileContents[$file]
                        try {
                            foreach ($query in ($sql -Split "\nGO\b")) {
                                $null = $db.Query($query)
                            }
                        }
                        catch {
                            Stop-Function -Message "Could not execute $shortFileName in $Database on $instance." -ErrorRecord $_ -Target $db -Continue
                        }
                    }
                }
            }
            catch {
                Stop-Function -Message "Could not execute $shortFileName in $Database on $instance." -ErrorRecord $_ -Target $db -Continue
            }
        }



        # Only here due to need for non-pooled connection in this command
        try {
            $server.ConnectionContext.Disconnect()
        }
        catch {
        }

        Write-Message -Level Output -Message "Installation complete."
    }
}