config/fcos/v1_5_exp: use array of extension instead of string

config/common/errors.go

@@ -69,4 +69,7 @@ var (
 	ErrUserFieldSupport       = errors.New("fields other than \"name\" and \"ssh_authorized_keys\" are not supported in this spec version")
 	ErrUserNameSupport        = errors.New("users other than \"core\" are not supported in this spec version")
 	ErrKernelArgumentSupport  = errors.New("this field cannot be used for kernel arguments in this spec version; use openshift.kernel_arguments instead")
+
+	// Extensions
+	ErrExtensionNameRequired = errors.New("field \"name\" is required")
 )

config/fcos/v1_5_exp/schema.go

@@ -20,8 +20,8 @@ import (
 
 type Config struct {
 	base.Config `yaml:",inline"`
-	BootDevice  BootDevice `yaml:"boot_device"`
-	Extensions  Extensions `yaml:"extensions"`
+	BootDevice  BootDevice  `yaml:"boot_device"`
+	Extensions  []Extension `yaml:"extensions"`
 }
 
 type BootDevice struct {
@@ -40,4 +40,6 @@ type BootDeviceMirror struct {
 	Devices []string `yaml:"devices"`
 }
 
-type Extensions []string
+type Extension struct {
+	Name string `yaml:"name"`
+}

config/fcos/v1_5_exp/translate.go

@@ -309,11 +309,14 @@ func (c Config) processPackages(options common.TranslateOptions) (types.Config,
 	if len(c.Extensions) == 0 {
 		return ret, ts, r
 	}
-
+	var extensions []string
+	for _, ex := range c.Extensions {
+		extensions = append(extensions, ex.Name)
+	}
 	treeFileContents, err := yaml.Marshal(&struct {
 		Packages []string `yaml:"packages"`
 	}{
-		Packages: c.Extensions,
+		Packages: extensions,
 	})
 	if err != nil {
 		r.AddOnError(yamlPath, err)

config/fcos/v1_5_exp/translate_test.go

@@ -1432,7 +1432,14 @@ func TestTranslateExtensions(t *testing.T) {
 		// config with two extensions/packages
 		{
 			Config{
-				Extensions: []string{"strace", "zsh"},
+				Extensions: []Extension{
+					{
+						Name: "strace",
+					},
+					{
+						Name: "zsh",
+					},
+				},
 			},
 			types.Config{
 				Ignition: types.Ignition{

config/fcos/v1_5_exp/validate.go

@@ -39,3 +39,10 @@ func (m BootDeviceMirror) Validate(c path.ContextPath) (r report.Report) {
 	}
 	return
 }
+
+func (e Extension) Validate(c path.ContextPath) (r report.Report) {
+	if e.Name == "" {
+		r.AddOnError(c.Append("name"), common.ErrExtensionNameRequired)
+	}
+	return
+}

config/fcos/v1_5_exp/validate_test.go

@@ -187,3 +187,44 @@ func TestValidateBootDevice(t *testing.T) {
 		})
 	}
 }
+
+// TestValidateExtension tests extension validation
+func TestValidateExtension(t *testing.T) {
+	tests := []struct {
+		in      Extension
+		out     error
+		errPath path.ContextPath
+	}{
+		// No name field
+		{
+			Extension{},
+			common.ErrExtensionNameRequired,
+			path.New("yaml", "name"),
+		},
+		// complete config
+		{
+			Extension{
+				Name: "strace",
+			},
+			nil,
+			path.New("yaml"),
+		},
+		// empty string as name
+		{
+			Extension{
+				Name: "",
+			},
+			common.ErrExtensionNameRequired,
+			path.New("yaml", "name"),
+		},
+	}
+
+	for i, test := range tests {
+		t.Run(fmt.Sprintf("validate %d", i), func(t *testing.T) {
+			actual := test.in.Validate(path.New("yaml"))
+			expected := report.Report{}
+			expected.AddOnError(test.errPath, test.out)
+			assert.Equal(t, expected, actual, "bad validation report")
+		})
+	}
+}

docs/config-fcos-v1_5-exp.md

@@ -206,7 +206,8 @@ The Fedora CoreOS configuration is a YAML document conforming to the following s
     * **_threshold_** (int): sets the minimum number of pieces required to decrypt the device. Default is 1.
   * **_mirror_** (object): describes mirroring of the boot disk for fault tolerance.
     * **_devices_** (list of strings): the list of whole-disk devices (not partitions) to include in the disk array, referenced by their absolute path. At least two devices must be specified.
-* **_extensions_** (list of strings): a list of packages to layer on top of the OS.
+* **_extensions_** (list of objects): the list of additional packages to be installed.
+  * **name** (string): the name of the package.
 
 [part-types]: http://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs
 [rfc2397]: https://tools.ietf.org/html/rfc2397

docs/config-openshift-v4_11-exp.md

@@ -156,7 +156,8 @@ The OpenShift configuration is a YAML document conforming to the following speci
     * **_threshold_** (int): sets the minimum number of pieces required to decrypt the device. Default is 1.
   * **_mirror_** (object): describes mirroring of the boot disk for fault tolerance.
     * **_devices_** (list of strings): the list of whole-disk devices (not partitions) to include in the disk array, referenced by their absolute path. At least two devices must be specified.
-* **_extensions_** (list of strings): a list of packages to layer on top of the OS.
+* **_extensions_** (list of objects): the list of additional packages to be installed.
+  * **name** (string): the name of the package.
 * **_openshift_** (object): describes miscellaneous OpenShift configuration. Respected when rendering to a MachineConfig, ignored when rendering directly to an Ignition config.
   * **_kernel_type_** (string): which kernel to use on the node. Must be `default` or `realtime`.
   * **_kernel_arguments_** (list of strings): arguments to be added to the kernel command line.