provider/azurerm: add virtual_machine_extension resource

Picked up from where #6548 left off

settings and protected_settings take JSON objects as strings to make extension
generic

TF_ACC=1 go test ./builtin/providers/azurerm -v -run "TestAccAzureRMVirtualMachineExtension" -timeout 120m
=== RUN   TestAccAzureRMVirtualMachineExtension_importBasic
--- PASS: TestAccAzureRMVirtualMachineExtension_importBasic (810.44s)
=== RUN   TestAccAzureRMVirtualMachineExtension_basic
--- PASS: TestAccAzureRMVirtualMachineExtension_basic (839.55s)
=== RUN   TestAccAzureRMVirtualMachineExtension_concurrent
--- PASS: TestAccAzureRMVirtualMachineExtension_concurrent (689.69s)
PASS
ok          github.com/hashicorp/terraform/builtin/providers/azurerm        2339.695s

builtin/providers/azurerm/import_arm_virtual_machine_extension_test.go

@@ -0,0 +1,34 @@
+package azurerm
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/hashicorp/terraform/helper/acctest"
+	"github.com/hashicorp/terraform/helper/resource"
+)
+
+func TestAccAzureRMVirtualMachineExtension_importBasic(t *testing.T) {
+	resourceName := "azurerm_virtual_machine_extension.test"
+
+	ri := acctest.RandInt()
+	config := fmt.Sprintf(testAccAzureRMVirtualMachineExtension_basic, ri, ri, ri, ri, ri, ri, ri, ri)
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		Providers:    testAccProviders,
+		CheckDestroy: testCheckAzureRMVirtualMachineExtensionDestroy,
+		Steps: []resource.TestStep{
+			resource.TestStep{
+				Config: config,
+			},
+
+			resource.TestStep{
+				ResourceName:            resourceName,
+				ImportState:             true,
+				ImportStateVerify:       true,
+				ImportStateVerifyIgnore: []string{"protected_settings"},
+			},
+		},
+	})
+}

builtin/providers/azurerm/provider.go

@@ -84,6 +84,7 @@ func Provider() terraform.ResourceProvider {
 			"azurerm_template_deployment":       resourceArmTemplateDeployment(),
 			"azurerm_traffic_manager_endpoint":  resourceArmTrafficManagerEndpoint(),
 			"azurerm_traffic_manager_profile":   resourceArmTrafficManagerProfile(),
+			"azurerm_virtual_machine_extension": resourceArmVirtualMachineExtensions(),
 			"azurerm_virtual_machine":           resourceArmVirtualMachine(),
 			"azurerm_virtual_machine_scale_set": resourceArmVirtualMachineScaleSet(),
 			"azurerm_virtual_network":           resourceArmVirtualNetwork(),

builtin/providers/azurerm/resource_arm_virtual_machine_extension.go

@@ -0,0 +1,236 @@
+package azurerm
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"reflect"
+
+	"github.com/Azure/azure-sdk-for-go/arm/compute"
+	"github.com/hashicorp/terraform/helper/schema"
+)
+
+func resourceArmVirtualMachineExtensions() *schema.Resource {
+	return &schema.Resource{
+		Create: resourceArmVirtualMachineExtensionsCreate,
+		Read:   resourceArmVirtualMachineExtensionsRead,
+		Update: resourceArmVirtualMachineExtensionsCreate,
+		Delete: resourceArmVirtualMachineExtensionsDelete,
+		Importer: &schema.ResourceImporter{
+			State: schema.ImportStatePassthrough,
+		},
+
+		Schema: map[string]*schema.Schema{
+			"name": &schema.Schema{
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+
+			"location": &schema.Schema{
+				Type:      schema.TypeString,
+				Required:  true,
+				ForceNew:  true,
+				StateFunc: azureRMNormalizeLocation,
+			},
+
+			"resource_group_name": &schema.Schema{
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+
+			"virtual_machine_name": &schema.Schema{
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+
+			"publisher": &schema.Schema{
+				Type:     schema.TypeString,
+				Required: true,
+			},
+
+			"type": &schema.Schema{
+				Type:     schema.TypeString,
+				Required: true,
+			},
+
+			"type_handler_version": &schema.Schema{
+				Type:     schema.TypeString,
+				Required: true,
+			},
+
+			"auto_upgrade_minor_version": {
+				Type:     schema.TypeBool,
+				Optional: true,
+			},
+
+			"settings": &schema.Schema{
+				Type:             schema.TypeString,
+				Optional:         true,
+				ValidateFunc:     validateJsonString,
+				DiffSuppressFunc: suppressDiffVirtualMachineExtensionSettings,
+			},
+
+			// due to the sensitive nature, these are not returned by the API
+			"protected_settings": &schema.Schema{
+				Type:             schema.TypeString,
+				Optional:         true,
+				Sensitive:        true,
+				ValidateFunc:     validateJsonString,
+				DiffSuppressFunc: suppressDiffVirtualMachineExtensionSettings,
+			},
+
+			"tags": tagsSchema(),
+		},
+	}
+}
+
+func resourceArmVirtualMachineExtensionsCreate(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*ArmClient).vmExtensionClient
+
+	name := d.Get("name").(string)
+	location := d.Get("location").(string)
+	vmName := d.Get("virtual_machine_name").(string)
+	resGroup := d.Get("resource_group_name").(string)
+	publisher := d.Get("publisher").(string)
+	extensionType := d.Get("type").(string)
+	typeHandlerVersion := d.Get("type_handler_version").(string)
+	autoUpgradeMinor := d.Get("auto_upgrade_minor_version").(bool)
+	tags := d.Get("tags").(map[string]interface{})
+
+	extension := compute.VirtualMachineExtension{
+		Location: &location,
+		Properties: &compute.VirtualMachineExtensionProperties{
+			Publisher:               &publisher,
+			Type:                    &extensionType,
+			TypeHandlerVersion:      &typeHandlerVersion,
+			AutoUpgradeMinorVersion: &autoUpgradeMinor,
+		},
+		Tags: expandTags(tags),
+	}
+
+	if settingsString := d.Get("settings").(string); settingsString != "" {
+		settings, err := expandArmVirtualMachineExtensionSettings(settingsString)
+		if err != nil {
+			return fmt.Errorf("unable to parse settings: %s", err)
+		}
+		extension.Properties.Settings = &settings
+	}
+
+	if protectedSettingsString := d.Get("protected_settings").(string); protectedSettingsString != "" {
+		protectedSettings, err := expandArmVirtualMachineExtensionSettings(protectedSettingsString)
+		if err != nil {
+			return fmt.Errorf("unable to parse protected_settings: %s", err)
+		}
+		extension.Properties.ProtectedSettings = &protectedSettings
+	}
+
+	_, err := client.CreateOrUpdate(resGroup, vmName, name, extension, make(chan struct{}))
+	if err != nil {
+		return err
+	}
+
+	read, err := client.Get(resGroup, vmName, name, "")
+	if err != nil {
+		return err
+	}
+
+	if read.ID == nil {
+		return fmt.Errorf("Cannot read  Virtual Machine Extension %s (resource group %s) ID", name, resGroup)
+	}
+
+	d.SetId(*read.ID)
+
+	return resourceArmVirtualMachineExtensionsRead(d, meta)
+}
+
+func resourceArmVirtualMachineExtensionsRead(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*ArmClient).vmExtensionClient
+
+	id, err := parseAzureResourceID(d.Id())
+	if err != nil {
+		return err
+	}
+	resGroup := id.ResourceGroup
+	vmName := id.Path["virtualMachines"]
+	name := id.Path["extensions"]
+
+	resp, err := client.Get(resGroup, vmName, name, "")
+	if err != nil {
+		return fmt.Errorf("Error making Read request on Virtual Machine Extension %s: %s", name, err)
+	}
+	if resp.StatusCode == http.StatusNotFound {
+		d.SetId("")
+		return nil
+	}
+
+	d.Set("name", resp.Name)
+	d.Set("location", azureRMNormalizeLocation(*resp.Location))
+	d.Set("virtual_machine_name", vmName)
+	d.Set("resource_group_name", resGroup)
+	d.Set("publisher", resp.Properties.Publisher)
+	d.Set("type", resp.Properties.Type)
+	d.Set("type_handler_version", resp.Properties.TypeHandlerVersion)
+	d.Set("auto_upgrade_minor_version", resp.Properties.AutoUpgradeMinorVersion)
+
+	if resp.Properties.Settings != nil {
+		settings, err := flattenArmVirtualMachineExtensionSettings(*resp.Properties.Settings)
+		if err != nil {
+			return fmt.Errorf("unable to parse settings from response: %s", err)
+		}
+		d.Set("settings", settings)
+	}
+
+	flattenAndSetTags(d, resp.Tags)
+
+	return nil
+}
+
+func resourceArmVirtualMachineExtensionsDelete(d *schema.ResourceData, meta interface{}) error {
+	client := meta.(*ArmClient).vmExtensionClient
+
+	id, err := parseAzureResourceID(d.Id())
+	if err != nil {
+		return err
+	}
+	resGroup := id.ResourceGroup
+	name := id.Path["extensions"]
+	vmName := id.Path["virtualMachines"]
+
+	_, err = client.Delete(resGroup, vmName, name, make(chan struct{}))
+
+	return nil
+}
+
+func expandArmVirtualMachineExtensionSettings(jsonString string) (map[string]interface{}, error) {
+	var result map[string]interface{}
+
+	err := json.Unmarshal([]byte(jsonString), &result)
+
+	return result, err
+}
+
+func flattenArmVirtualMachineExtensionSettings(settingsMap map[string]interface{}) (string, error) {
+	result, err := json.Marshal(settingsMap)
+	if err != nil {
+		return "", err
+	}
+
+	return string(result), nil
+}
+
+func suppressDiffVirtualMachineExtensionSettings(k, old, new string, d *schema.ResourceData) bool {
+	oldMap, err := expandArmVirtualMachineExtensionSettings(old)
+	if err != nil {
+		return false
+	}
+
+	newMap, err := expandArmVirtualMachineExtensionSettings(new)
+	if err != nil {
+		return false
+	}
+
+	return reflect.DeepEqual(oldMap, newMap)
+}