cIBMInstallationManager.psm1
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# Import IBM Installation Manager Utils Module Import-Module $PSScriptRoot\cIBMInstallationManagerUtils.psm1 -ErrorAction Stop enum Ensure { Absent Present } <# DSC resource to manage the installation of IBM Installation Manager. Key features: - Install IBM Installation Manager for the first time - Update an existing installation - Can use media on the local drive as well as from a network share which may require specifying credentials #> [DscResource()] class cIBMInstallationManager { [DscProperty(Key)] [String] $Version [DscProperty(Mandatory)] [Ensure] $Ensure [DscProperty()] [String] $InstallationDirectory = "C:\IBM\InstallationManager" [DscProperty()] [String] $SourcePath [DscProperty()] [System.Management.Automation.PSCredential] $SourcePathCredential <# Performs the installation or udpate of IBM Installation Manager. It will only update an existing installation if the desired version is newer #> [void] Set () { try { if ($this.Ensure -eq [Ensure]::Present) { Write-Verbose -Message 'Starting installation of IBM Installation Manager' $sevenZipExe = Get-SevenZipExecutable if (!([string]::IsNullOrEmpty($sevenZipExe)) -and (Test-Path($sevenZipExe))) { #7-Zip is installed, proceed with installation Set-Alias zip $sevenZipExe $iimRsrc = $this.Get() if ($iimRsrc.Version) { # There's an IBM Installation Manager installed, we may need to update it [System.Version] $currentVersion = New-Object -TypeName System.Version -ArgumentList $iimRsrc.Version [System.Version] $newVersion = New-Object -TypeName System.Version -ArgumentList $this.Version if ($newVersion.CompareTo($currentVersion) -gt 0) { Update-IBMInstallationManager -iimHome $this.InstallationDirectory -iimMedia $this.SourcePath -Version $this.Version -iimMediaCredential $this.SourcePathCredential } else { Write-Error "IBM Installation Manager already installed and its version ($currentVersion) is greater than the version specified ($newVersion)" } } else { Install-IBMInstallationManager -iimHome $this.InstallationDirectory -iimMedia $this.SourcePath -iimMediaCredential $this.SourcePathCredential } } else { Write-Error "IBM Installation Manager installation/update depends on 7-Zip, please ensure 7-Zip is installed first" } } else { Write-Verbose "Uninstalling IBM Installation Manager (Not Yet Implemented)" } } catch { Write-Error -ErrorRecord $_ -ErrorAction Stop } } <# Performs test to check if IBM Installation Manager is in the desired state, includes validation of installation directory and version #> [bool] Test () { Write-Verbose "Checking for IBM Installation Manager installation" $iimConfiguredCorrectly = $false $iimRsrc = $this.Get() if (($iimRsrc.Ensure -eq $this.Ensure) -and ($iimRsrc.Ensure -eq [Ensure]::Present)) { if ($iimRsrc.Version -eq $this.Version) { if (((Get-Item($iimRsrc.InstallationDirectory)).Name -eq (Get-Item($this.InstallationDirectory)).Name) -and ( (Get-Item($iimRsrc.InstallationDirectory)).Parent.FullName -eq (Get-Item($this.InstallationDirectory)).Parent.FullName)) { Write-Verbose "IBM Installation Manager is installed and configured correctly" $iimConfiguredCorrectly = $true } } } elseif (($iimRsrc.Ensure -eq $this.Ensure) -and ($iimRsrc.Ensure -eq [Ensure]::Absent)) { $iimConfiguredCorrectly = $true } if (!($iimConfiguredCorrectly)) { Write-Verbose "IBM Installation Manager not configured correctly" } return $iimConfiguredCorrectly } <# Leverages the information stored in the registry to populate the properties of an existing installation of IBM Installation Manager #> [cIBMInstallationManager] Get () { $RetEnsure = [Ensure]::Absent $RetInsDir = $null $RetVersion = $null $iimRegistryPath = Get-IBMInstallationManagerRegistryPath if((Test-Path($this.InstallationDirectory)) -and ($iimRegistryPath) -and (Test-Path($iimRegistryPath))) { $iimSWTagFile = Join-Path -Path $this.InstallationDirectory -ChildPath "properties\version\*.swtag" if(Test-Path($iimSWTagFile)) { Write-Verbose "IBM Installation Manager is Present" $RetEnsure = [Ensure]::Present $RetInsDir = (Get-ItemProperty($iimRegistryPath)).location Write-Verbose "IBM Installation Manager Directory: $RetInsDir" $RetVersion = (Get-ItemProperty($iimRegistryPath)).version Write-Verbose "IBM Installation Manager Version: $RetVersion" } } else { Write-Verbose "IBM Installation Manager is NOT Present" } $returnValue = @{ InstallationDirectory = $RetInsDir Version = $RetVersion Ensure = $RetEnsure } return $returnValue } } |