Prevent unwanted yaml fields to be marshalled

pkg/config/config_test.go

@@ -17,7 +17,6 @@ package config_test
 
 import (
 	"fmt"
-	"github.com/kairos-io/kairos-sdk/collector"
 	"path/filepath"
 	"reflect"
 	"strings"
@@ -28,8 +27,10 @@ import (
 	v1mocks "github.com/kairos-io/kairos-agent/v2/tests/mocks"
 	"github.com/twpayne/go-vfs/v4"
 	"github.com/twpayne/go-vfs/v4/vfst"
+	"gopkg.in/yaml.v3"
 
 	. "github.com/kairos-io/kairos-agent/v2/pkg/config"
+	"github.com/kairos-io/kairos-sdk/collector"
 	. "github.com/kairos-io/kairos-sdk/schema"
 	. "github.com/onsi/ginkgo/v2"
 	. "github.com/onsi/gomega"
@@ -114,6 +115,57 @@ var _ = Describe("Schema", func() {
 			structFieldsContainedInOtherStruct(Bundle{}, BundleSchema{})
 		})
 	})
+
+	Describe("Install unmarshall for payloads", func() {
+		It("produces a yaml without empty fields", func() {
+			wants := `install:
+    poweroff: true
+    bind_mounts:
+        - /var/lib/ceph
+        - /var/lib/osd
+    partitions:
+        oem:
+            size: 5120
+            fs: ext4
+    system:
+        size: 8192
+    recovery-system:
+        size: 10000
+    passive:
+        size: 8192
+`
+			config := Config{
+				Install: &Install{
+					Poweroff: true,
+					BindMounts: []string{
+						"/var/lib/ceph",
+						"/var/lib/osd",
+					},
+					Active: v1.Image{
+						Size: 8192,
+					},
+					Passive: v1.Image{
+						Size: 8192,
+					},
+					Recovery: v1.Image{
+						Size: 10000,
+					},
+					Partitions: v1.ElementalPartitions{
+						OEM: &v1.Partition{
+							Size: 5120,
+							FS:   "ext4",
+						},
+					},
+				},
+			}
+
+			got, err := yaml.Marshal(config)
+			Expect(Expect(err).NotTo(HaveOccurred()))
+
+			Expect(string(got)).To(Equal(wants))
+		})
+	})
+
 	Describe("Write and load installation state", func() {
 		var config *Config
 		var runner *v1mocks.FakeRunner

pkg/types/v1/config.go

@@ -218,14 +218,14 @@ func (r *EmptySpec) ShouldShutdown() bool { return false }
 
 // Partition struct represents a partition with its commonly configurable values, size in MiB
 type Partition struct {
-	Name            string
+	Name            string   `yaml:"-"`
 	FilesystemLabel string   `yaml:"label,omitempty" mapstructure:"label"`
 	Size            uint     `yaml:"size,omitempty" mapstructure:"size"`
 	FS              string   `yaml:"fs,omitempty" mapstrcuture:"fs"`
 	Flags           []string `yaml:"flags,omitempty" mapstrcuture:"flags"`
-	MountPoint      string
-	Path            string
-	Disk            string
+	MountPoint      string   `yaml:"-"`
+	Path            string   `yaml:"-"`
+	Disk            string   `yaml:"-"`
 }
 
 type PartitionList []*Partition
@@ -261,8 +261,8 @@ func (pl PartitionList) GetByLabel(label string) *Partition {
 }
 
 type ElementalPartitions struct {
-	BIOS       *Partition
-	EFI        *Partition
+	BIOS       *Partition `yaml:"-"`
+	EFI        *Partition `yaml:"-"`
 	OEM        *Partition `yaml:"oem,omitempty" mapstructure:"oem"`
 	Recovery   *Partition `yaml:"recovery,omitempty" mapstructure:"recovery"`
 	State      *Partition `yaml:"state,omitempty" mapstructure:"state"`
@@ -434,13 +434,13 @@ func (ep ElementalPartitions) PartitionsByMountPoint(descending bool, excludes .
 
 // Image struct represents a file system image with its commonly configurable values, size in MiB
 type Image struct {
-	File       string
+	File       string       `yaml:"-"`
 	Label      string       `yaml:"label,omitempty" mapstructure:"label"`
 	Size       uint         `yaml:"size,omitempty" mapstructure:"size"`
 	FS         string       `yaml:"fs,omitempty" mapstructure:"fs"`
 	Source     *ImageSource `yaml:"uri,omitempty" mapstructure:"uri"`
-	MountPoint string
-	LoopDevice string
+	MountPoint string       `yaml:"-"`
+	LoopDevice string       `yaml:"-"`
 }
 
 // InstallState tracks the installation data of the whole system