Merge pull request #7211 from riezebosch/master

arm-builder: specify zone resilient image from config

builder/azure/arm/builder.go

@@ -151,6 +151,8 @@ func (b *Builder) Run(ui packer.Ui, hook packer.Hook) (packer.Artifact, error) {
 		b.config.Location = *group.Location
 	}
 
+	b.config.validateLocationZoneResiliency(ui.Say)
+
 	if b.config.StorageAccount != "" {
 		account, err := b.getBlobAccount(ctx, azureClient, b.config.ResourceGroupName, b.config.StorageAccount)
 		if err != nil {

builder/azure/arm/config.go

@@ -107,6 +107,7 @@ type Config struct {
 	ManagedImageOSDiskSnapshotName     string `mapstructure:"managed_image_os_disk_snapshot_name"`
 	ManagedImageDataDiskSnapshotPrefix string `mapstructure:"managed_image_data_disk_snapshot_prefix"`
 	manageImageLocation                string
+	ManagedImageZoneResilient          bool `mapstructure:"managed_image_zone_resilient"`
 
 	// Deployment
 	AzureTags                         map[string]*string `mapstructure:"azure_tags"`
@@ -196,6 +197,9 @@ func (c *Config) toImageParameters() *compute.Image {
 			SourceVirtualMachine: &compute.SubResource{
 				ID: to.StringPtr(c.toVMID()),
 			},
+			StorageProfile: &compute.ImageStorageProfile{
+				ZoneResilient: to.BoolPtr(c.ManagedImageZoneResilient),
+			},
 		},
 		Location: to.StringPtr(c.Location),
 		Tags:     c.AzureTags,
@@ -721,3 +725,23 @@ func isValidAzureName(re *regexp.Regexp, rgn string) bool {
 		!strings.HasSuffix(rgn, ".") &&
 		!strings.HasSuffix(rgn, "-")
 }
+
+func (c *Config) validateLocationZoneResiliency(say func(s string)) {
+	// Docs on regions that support Availibility Zones:
+	//   https://docs.microsoft.com/en-us/azure/availability-zones/az-overview#regions-that-support-availability-zones
+	// Query technical names for locations:
+	//   az account list-locations --query '[].name' -o tsv
+
+	var zones = make(map[string]struct{})
+	zones["westeurope"] = struct{}{}
+	zones["centralus"] = struct{}{}
+	zones["eastus2"] = struct{}{}
+	zones["francecentral"] = struct{}{}
+	zones["northeurope"] = struct{}{}
+	zones["southeastasia"] = struct{}{}
+	zones["westus2"] = struct{}{}
+
+	if _, ok := zones[c.Location]; !ok {
+		say(fmt.Sprintf("WARNING: Zone resiliency may not be supported in %s, checkout the docs at https://docs.microsoft.com/en-us/azure/availability-zones/", c.Location))
+	}
+}

builder/azure/arm/config_test.go

@@ -794,6 +794,51 @@ func TestConfigShouldRejectExcessiveTagValueLength(t *testing.T) {
 	}
 }
 
+func TestConfigZoneResilientShouldDefaultToFalse(t *testing.T) {
+	config := map[string]interface{}{
+		"managed_image_name":                "ignore",
+		"managed_image_resource_group_name": "ignore",
+		"build_resource_group_name":         "ignore",
+		"image_publisher":                   "igore",
+		"image_offer":                       "ignore",
+		"image_sku":                         "ignore",
+		"os_type":                           "linux",
+	}
+
+	c, _, err := newConfig(config, getPackerConfiguration())
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	p := c.toImageParameters()
+	if *p.ImageProperties.StorageProfile.ZoneResilient {
+		t.Fatal("expected zone resilient default to be false")
+	}
+}
+
+func TestConfigZoneResilientSetFromConfig(t *testing.T) {
+	config := map[string]interface{}{
+		"managed_image_name":                "ignore",
+		"managed_image_resource_group_name": "ignore",
+		"build_resource_group_name":         "ignore",
+		"image_publisher":                   "igore",
+		"image_offer":                       "ignore",
+		"image_sku":                         "ignore",
+		"os_type":                           "linux",
+		"managed_image_zone_resilient":      true,
+	}
+
+	c, _, err := newConfig(config, getPackerConfiguration())
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	p := c.toImageParameters()
+	if *p.ImageProperties.StorageProfile.ZoneResilient == false {
+		t.Fatal("expected managed image zone resilient to be true from config")
+	}
+}
+
 func TestConfigShouldRejectMissingCustomDataFile(t *testing.T) {
 	config := map[string]interface{}{
 		"capture_name_prefix":    "ignore",
@@ -1636,7 +1681,42 @@ func TestConfigShouldRejectSharedImageGalleryWithVhdTarget(t *testing.T) {
 	if err != nil {
 		t.Log("expected an error if Shared Image Gallery source is used with VHD target", err)
 	}
+}
+
+func Test_GivenZoneNotSupportingResiliency_ConfigValidate_ShouldWarn(t *testing.T) {
+	builderValues := getArmBuilderConfiguration()
+	builderValues["managed_image_zone_resilient"] = "true"
+	builderValues["location"] = "ukwest"
+
+	c, _, err := newConfig(builderValues, getPackerConfiguration())
+	if err != nil {
+		t.Errorf("newConfig failed with %q", err)
+	}
 
+	var m = ""
+	c.validateLocationZoneResiliency(func(s string) { m = s })
+
+	if m != "WARNING: Zone resiliency may not be supported in ukwest, checkout the docs at https://docs.microsoft.com/en-us/azure/availability-zones/" {
+		t.Errorf("warning message not as expected: %s", m)
+	}
+}
+
+func Test_GivenZoneSupportingResiliency_ConfigValidate_ShouldNotWarn(t *testing.T) {
+	builderValues := getArmBuilderConfiguration()
+	builderValues["managed_image_zone_resilient"] = "true"
+	builderValues["location"] = "westeurope"
+
+	c, _, err := newConfig(builderValues, getPackerConfiguration())
+	if err != nil {
+		t.Errorf("newConfig failed with %q", err)
+	}
+
+	var m = ""
+	c.validateLocationZoneResiliency(func(s string) { m = s })
+
+	if m != "" {
+		t.Errorf("warning message not as expected: %s", m)
+	}
 }
 
 func getArmBuilderConfiguration() map[string]string {

website/source/docs/builders/azure.html.md

@@ -334,6 +334,9 @@ Providing `temp_resource_group_name` or `location` in combination with
     disk(s) is created with the same prefix as this value before the VM is
     captured.
 
+-   `managed_image_zone_resilient` (bool) Store the image in zone-resilient storage. You need to create it
+    in a region that supports [availability zones](https://docs.microsoft.com/en-us/azure/availability-zones/az-overview).
+
 ## Basic Example
 
 Here is a basic example for Azure.