Windows - remove docker on ensure absent (#318)

Author: florindragos

manifests/install.pp

@@ -89,28 +89,37 @@
           name   => $docker::docker_package_name,
         }))
       } else {
-        if $docker::package_location {
-          exec { 'install-docker-package':
-            command   => template('docker/windows/download_docker.ps1.erb'),
-            provider  => powershell,
-            unless    => template('docker/windows/check_docker_url.ps1.erb'),
-            logoutput => true,
-            notify    => Exec['service-restart-on-failure'],
-          }
+        if $ensure == 'absent' {
+          exec { 'remove-docker-package':
+              command   => template('docker/windows/remove_docker.ps1.erb'),
+              provider  => powershell,
+              unless    => template('docker/windows/check_docker.ps1.erb'),
+              logoutput => true,
+            }
         } else {
-          exec { 'install-docker-package':
-            command   => template('docker/windows/install_powershell_provider.ps1.erb'),
-            provider  => powershell,
-            unless    => template('docker/windows/check_powershell_provider.ps1.erb'),
-            logoutput => true,
-            notify    => Exec['service-restart-on-failure'],
+          if $docker::package_location {
+            exec { 'install-docker-package':
+              command   => template('docker/windows/download_docker.ps1.erb'),
+              provider  => powershell,
+              unless    => template('docker/windows/check_docker_url.ps1.erb'),
+              logoutput => true,
+              notify    => Exec['service-restart-on-failure'],
+            }
+          } else {
+            exec { 'install-docker-package':
+              command   => template('docker/windows/install_powershell_provider.ps1.erb'),
+              provider  => powershell,
+              unless    => template('docker/windows/check_powershell_provider.ps1.erb'),
+              logoutput => true,
+              notify    => Exec['service-restart-on-failure'],
+            }
+          }
+          exec { 'service-restart-on-failure':
+            command     => 'SC.exe failure Docker reset= 432000 actions= restart/30000/restart/60000/restart/60000',
+            refreshonly => true,
+            logoutput   => true,
+            provider    => powershell,
           }
-        }
-        exec { 'service-restart-on-failure':
-          command     => 'SC.exe failure Docker reset= 432000 actions= restart/30000/restart/60000/restart/60000',
-          refreshonly => true,
-          logoutput   => true,
-          provider    => powershell,
         }
       }
     }

templates/windows/check_docker.ps1.erb

@@ -0,0 +1,19 @@
+# this file checks the status of the Windows Docker package using the DockerMsftProvider powershell provider
+$dockerProviderName="DockerMsftProvider"
+
+Write-Information "Checking Docker package."
+$package=Get-Package <%= @docker_ee_package_name %> -ProviderName $dockerProviderName -ErrorAction Ignore
+if ($package -ne $null) { 
+    Exit 1
+}
+
+$service = Get-Service "docker" -ErrorAction Ignore
+if ($service -ne $null) {
+    exit 1
+} 
+
+if (Test-Path -Path "$env:ProgramFiles\docker") {
+    exit 1
+}
+
+exit 0

templates/windows/download_docker.ps1.erb

@@ -36,4 +36,4 @@ if ($cleanInstall) {
 
     # Register the Docker daemon as a service.
     dockerd --register-service
-}
+}

templates/windows/remove_docker.ps1.erb

@@ -0,0 +1,48 @@
+# this file install the Windows Docker package using the DockerMsftProvider powershell provider
+$dockerProviderName="DockerMsftProvider"
+
+$package=Get-Package <%= @docker_ee_package_name %> -ProviderName $dockerProviderName -ErrorAction Ignore
+If ($package -ne $null) { 
+    Write-Information "Uninstalling Docker Package"
+    $package=Uninstall-Package <%= @docker_ee_package_name %> -ProviderName $dockerProviderName -Force
+    <% if @version -%>
+    -RequiredVersion <%= @version %>
+    <% end -%>
+    If ($package -eq $null) { 
+        Write-Error "Failed to uninstall Docker Package"
+        Exit 1
+    }
+}
+
+$provider = Get-Module -ListAvailable -Name $dockerProviderName -ErrorAction Ignore
+If ($provider -ne $null) {
+    Write-Information "Uninstalling Docker Provider"
+    Uninstall-Module $dockerProviderName -Force
+
+    $provider = Get-Module -ListAvailable -Name $dockerProviderName -ErrorAction Ignore
+    If ($provider -ne $null) {
+        Write-Error "Failed to uninstall Docker Microsoft Provider"
+        Exit 1
+    }
+}
+
+$service = Get-Service "docker" -ErrorAction Ignore
+if ($service -ne $null) {
+    if ( $service.Status -ne [ServiceProcess.ServiceControllerStatus]::Stopped ) {
+        $timeSpan = New-Object Timespan 0,0,60
+        try {
+            $service.Stop()
+            $service.WaitForStatus([ServiceProcess.ServiceControllerStatus]::Stopped, 60)
+        }
+        catch [Management.Automation.MethodInvocationException],[ServiceProcess.TimeoutException] {
+            Write-Error "Failed to stop docker service"
+            exit 1
+        }
+    }
+
+    sc.exe delete "docker"
+} 
+
+if (Test-Path -Path "$env:ProgramFiles\docker") {
+    Remove-Item "$env:ProgramFiles\docker" -Recurse -Force
+}