user_assigned_identity_resource.go

package msi

import (
	"fmt"
	"log"
	"time"

	"github.com/hashicorp/go-azure-helpers/lang/response"
	"github.com/kevinklinger/terraform-provider-azurerm/v2/helpers/azure"
	"github.com/kevinklinger/terraform-provider-azurerm/v2/helpers/tf"
	"github.com/kevinklinger/terraform-provider-azurerm/v2/internal/clients"
	"github.com/kevinklinger/terraform-provider-azurerm/v2/internal/location"
	"github.com/kevinklinger/terraform-provider-azurerm/v2/internal/services/msi/migration"
	"github.com/kevinklinger/terraform-provider-azurerm/v2/internal/services/msi/sdk/2018-11-30/managedidentity"
	"github.com/kevinklinger/terraform-provider-azurerm/v2/internal/tags"
	"github.com/kevinklinger/terraform-provider-azurerm/v2/internal/tf/pluginsdk"
	"github.com/kevinklinger/terraform-provider-azurerm/v2/internal/tf/validation"
	"github.com/kevinklinger/terraform-provider-azurerm/v2/internal/timeouts"
	"github.com/kevinklinger/terraform-provider-azurerm/v2/utils"
)

func resourceArmUserAssignedIdentity() *pluginsdk.Resource {
	return &pluginsdk.Resource{
		Create: resourceArmUserAssignedIdentityCreateUpdate,
		Read:   resourceArmUserAssignedIdentityRead,
		Update: resourceArmUserAssignedIdentityCreateUpdate,
		Delete: resourceArmUserAssignedIdentityDelete,
		Importer: pluginsdk.ImporterValidatingResourceId(func(id string) error {
			_, err := managedidentity.ParseUserAssignedIdentitiesID(id)
			return err
		}),

		SchemaVersion: 1,
		StateUpgraders: pluginsdk.StateUpgrades(map[int]pluginsdk.StateUpgrade{
			0: migration.UserAssignedIdentityV0ToV1{},
		}),

		Timeouts: &pluginsdk.ResourceTimeout{
			Create: pluginsdk.DefaultTimeout(30 * time.Minute),
			Read:   pluginsdk.DefaultTimeout(5 * time.Minute),
			Update: pluginsdk.DefaultTimeout(30 * time.Minute),
			Delete: pluginsdk.DefaultTimeout(30 * time.Minute),
		},

		Schema: map[string]*pluginsdk.Schema{
			"name": {
				Type:         pluginsdk.TypeString,
				Required:     true,
				ForceNew:     true,
				ValidateFunc: validation.StringLenBetween(3, 128),
			},

			"resource_group_name": azure.SchemaResourceGroupName(),

			"location": azure.SchemaLocation(),

			"tags": tags.Schema(),

			"principal_id": {
				Type:     pluginsdk.TypeString,
				Computed: true,
			},

			"client_id": {
				Type:     pluginsdk.TypeString,
				Computed: true,
			},

			"tenant_id": {
				Type:     pluginsdk.TypeString,
				Computed: true,
			},
		},
	}
}

func resourceArmUserAssignedIdentityCreateUpdate(d *pluginsdk.ResourceData, meta interface{}) error {
	client := meta.(*clients.Client).MSI.UserAssignedIdentitiesClient
	subscriptionId := meta.(*clients.Client).Account.SubscriptionId
	ctx, cancel := timeouts.ForCreateUpdate(meta.(*clients.Client).StopContext, d)
	defer cancel()

	log.Printf("[INFO] preparing arguments for User Assigned Identity create/update.")

	location := d.Get("location").(string)
	t := d.Get("tags").(map[string]interface{})

	resourceId := managedidentity.NewUserAssignedIdentitiesID(subscriptionId, d.Get("resource_group_name").(string), d.Get("name").(string))
	if d.IsNewResource() {
		existing, err := client.UserAssignedIdentitiesGet(ctx, resourceId)
		if err != nil {
			if !response.WasNotFound(existing.HttpResponse) {
				return fmt.Errorf("checking for presence of existing %s: %+v", resourceId, err)
			}
		}

		if !response.WasNotFound(existing.HttpResponse) {
			return tf.ImportAsExistsError("azurerm_user_assigned_identity", resourceId.ID())
		}
	}

	identity := managedidentity.Identity{
		Name:     utils.String(resourceId.UserAssignedIdentityName),
		Location: location,
		Tags:     expandTags(t),
	}

	if _, err := client.UserAssignedIdentitiesCreateOrUpdate(ctx, resourceId, identity); err != nil {
		return fmt.Errorf("creating/updating %s: %+v", resourceId, err)
	}

	d.SetId(resourceId.ID())
	return resourceArmUserAssignedIdentityRead(d, meta)
}

func resourceArmUserAssignedIdentityRead(d *pluginsdk.ResourceData, meta interface{}) error {
	client := meta.(*clients.Client).MSI.UserAssignedIdentitiesClient
	ctx, cancel := timeouts.ForRead(meta.(*clients.Client).StopContext, d)
	defer cancel()

	id, err := managedidentity.ParseUserAssignedIdentitiesID(d.Id())
	if err != nil {
		return err
	}

	resp, err := client.UserAssignedIdentitiesGet(ctx, *id)
	if err != nil {
		if response.WasNotFound(resp.HttpResponse) {
			d.SetId("")
			return nil
		}
		return fmt.Errorf("retrieving %s: %+v", *id, err)
	}

	d.Set("name", id.UserAssignedIdentityName)
	d.Set("resource_group_name", id.ResourceGroup)

	if model := resp.Model; model != nil {
		d.Set("location", location.Normalize(model.Location))

		if props := model.Properties; props != nil {
			d.Set("client_id", props.ClientId)
			d.Set("principal_id", props.PrincipalId)
			d.Set("tenant_id", props.TenantId)
		}

		if err := tags.FlattenAndSet(d, flattenTags(model.Tags)); err != nil {
			return err
		}
	}

	return nil
}

func resourceArmUserAssignedIdentityDelete(d *pluginsdk.ResourceData, meta interface{}) error {
	client := meta.(*clients.Client).MSI.UserAssignedIdentitiesClient
	ctx, cancel := timeouts.ForDelete(meta.(*clients.Client).StopContext, d)
	defer cancel()

	id, err := managedidentity.ParseUserAssignedIdentitiesID(d.Id())
	if err != nil {
		return err
	}

	if _, err = client.UserAssignedIdentitiesDelete(ctx, *id); err != nil {
		return fmt.Errorf("deleting %s: %+v", *id, err)
	}

	return nil
}