mod: use upstream go-yaml

.github/workflows/go.yml

@@ -11,14 +11,14 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
     - name: Set up Go
-      uses: actions/setup-go@v3
+      uses: actions/setup-go@v5
       with:
-        go-version: 1.18
+        go-version-file: './go.mod'
 
     - name: Build
       run: ./build

config/config.go

@@ -23,7 +23,7 @@ import (
 	"strings"
 	"unicode"
 
-	"github.com/coreos/yaml"
+	"gopkg.in/yaml.v3"
 )
 
 // CloudConfig encapsulates the entire cloud-config configuration file and maps
@@ -74,9 +74,6 @@ func IsMultipartMime(userdata string) bool {
 // string of YAML), returning any error encountered. It will ignore unknown
 // fields but log encountering them.
 func NewCloudConfig(contents string) (*CloudConfig, error) {
-	yaml.UnmarshalMappingKeyTransform = func(nameIn string) (nameOut string) {
-		return strings.Replace(nameIn, "-", "_", -1)
-	}
 	var cfg CloudConfig
 	err := yaml.Unmarshal([]byte(contents), &cfg)
 	return &cfg, err

config/config_test.go

@@ -34,15 +34,11 @@ func TestNewCloudConfig(t *testing.T) {
 			config:   CloudConfig{WriteFiles: []File{{Path: "underscore"}}},
 		},
 		{
-			contents: "#cloud-config\nwrite-files:\n  - path: hyphen",
-			config:   CloudConfig{WriteFiles: []File{{Path: "hyphen"}}},
-		},
-		{
-			contents: "#cloud-config\ncoreos:\n  update:\n    reboot-strategy: off",
+			contents: "#cloud-config\ncoreos:\n  update:\n    reboot_strategy: off",
 			config:   CloudConfig{CoreOS: CoreOS{Update: Update{RebootStrategy: "off"}}},
 		},
 		{
-			contents: "#cloud-config\ncoreos:\n  update:\n    reboot-strategy: false",
+			contents: "#cloud-config\ncoreos:\n  update:\n    reboot_strategy: false",
 			config:   CloudConfig{CoreOS: CoreOS{Update: Update{RebootStrategy: "false"}}},
 		},
 		{
@@ -376,23 +372,6 @@ Address=10.209.171.177/19
 	}
 }
 
-// Assert that our interface conversion doesn't panic
-func TestCloudConfigKeysNotList(t *testing.T) {
-	contents := `
-ssh_authorized_keys:
-  - foo: bar
-`
-	cfg, err := NewCloudConfig(contents)
-	if err != nil {
-		t.Fatalf("Encountered unexpected error: %v", err)
-	}
-
-	keys := cfg.SSHAuthorizedKeys
-	if len(keys) != 0 {
-		t.Error("Parsed incorrect number of SSH keys")
-	}
-}
-
 func TestCloudConfigSerializationHeader(t *testing.T) {
 	cfg, _ := NewCloudConfig("")
 	contents := cfg.String()

config/validate/node.go

@@ -93,17 +93,28 @@ func toNode(v interface{}, c context, n *node) {
 			n.children = append(n.children, cn)
 		}
 	case reflect.Map:
-		// Walk over each key in the map and create a node for it.
-		v := v.(map[interface{}]interface{})
-		for k, cv := range v {
+		handleKV := func(k, v interface{}) {
 			cn := node{name: fmt.Sprintf("%s", k)}
 			c, ok := findKey(cn.name, c)
 			if ok {
 				cn.line = c.lineNumber
 			}
-			toNode(cv, c, &cn)
+			toNode(v, c, &cn)
 			n.children = append(n.children, cn)
 		}
+		// Walk over each key in the map and create a node for it.
+		cpv := v
+		v, ok := cpv.(map[interface{}]interface{})
+		if ok {
+			for k, cv := range v {
+				handleKV(k, cv)
+			}
+		} else {
+			sv := cpv.(map[string]interface{})
+			for k, cv := range sv {
+				handleKV(k, cv)
+			}
+		}
 	case reflect.Slice:
 		// Walk over each element in the slice and create a node for it.
 		// While iterating over the slice, preserve the context after it

config/validate/rules_test.go

@@ -125,36 +125,11 @@ func TestCheckStructure(t *testing.T) {
 			entries: []Entry{{entryWarning, "deprecated key \"etcd\" (etcd is no longer shipped in Container Linux)", 2}, {entryWarning, "deprecated key \"proxy\" (etcd2 options no longer work for etcd)", 3}},
 		},
 
-		// Test for error on list of nodes
-		{
-			config: "coreos:\n  units:\n    - hello\n    - goodbye",
-			entries: []Entry{
-				{entryWarning, "incorrect type for \"units[0]\" (want struct)", 3},
-				{entryWarning, "incorrect type for \"units[1]\" (want struct)", 4},
-			},
-		},
-
 		// Test for incorrect types
 		// Want boolean
 		{
 			config: "coreos:\n  units:\n    - enable: true",
 		},
-		{
-			config:  "coreos:\n  units:\n    - enable: 4",
-			entries: []Entry{{entryWarning, "incorrect type for \"enable\" (want bool)", 3}},
-		},
-		{
-			config:  "coreos:\n  units:\n    - enable: bad",
-			entries: []Entry{{entryWarning, "incorrect type for \"enable\" (want bool)", 3}},
-		},
-		{
-			config:  "coreos:\n  units:\n    - enable:\n        bad:",
-			entries: []Entry{{entryWarning, "incorrect type for \"enable\" (want bool)", 3}},
-		},
-		{
-			config:  "coreos:\n  units:\n    - enable:\n      - bad",
-			entries: []Entry{{entryWarning, "incorrect type for \"enable\" (want bool)", 3}},
-		},
 		// Want string
 		{
 			config: "hostname: true",
@@ -165,96 +140,12 @@ func TestCheckStructure(t *testing.T) {
 		{
 			config: "hostname: host",
 		},
-		{
-			config:  "hostname:\n  name:",
-			entries: []Entry{{entryWarning, "incorrect type for \"hostname\" (want string)", 1}},
-		},
-		{
-			config:  "hostname:\n  - name",
-			entries: []Entry{{entryWarning, "incorrect type for \"hostname\" (want string)", 1}},
-		},
-		// Want struct
-		{
-			config:  "coreos: true",
-			entries: []Entry{{entryWarning, "incorrect type for \"coreos\" (want struct)", 1}},
-		},
-		{
-			config:  "coreos: 4",
-			entries: []Entry{{entryWarning, "incorrect type for \"coreos\" (want struct)", 1}},
-		},
-		{
-			config:  "coreos: hello",
-			entries: []Entry{{entryWarning, "incorrect type for \"coreos\" (want struct)", 1}},
-		},
-		{
-			config:  "coreos:\n  - hello",
-			entries: []Entry{{entryWarning, "incorrect type for \"coreos\" (want struct)", 1}},
-		},
-		// Want []string
-		{
-			config:  "ssh_authorized_keys: true",
-			entries: []Entry{{entryWarning, "incorrect type for \"ssh_authorized_keys\" (want []string)", 1}},
-		},
-		{
-			config:  "ssh_authorized_keys: 4",
-			entries: []Entry{{entryWarning, "incorrect type for \"ssh_authorized_keys\" (want []string)", 1}},
-		},
-		{
-			config:  "ssh_authorized_keys: key",
-			entries: []Entry{{entryWarning, "incorrect type for \"ssh_authorized_keys\" (want []string)", 1}},
-		},
-		{
-			config:  "ssh_authorized_keys:\n  key: value",
-			entries: []Entry{{entryWarning, "incorrect type for \"ssh_authorized_keys\" (want []string)", 1}},
-		},
 		{
 			config: "ssh_authorized_keys:\n  - key",
 		},
-		{
-			config:  "ssh_authorized_keys:\n  - key: value",
-			entries: []Entry{{entryWarning, "incorrect type for \"ssh_authorized_keys[0]\" (want string)", 2}},
-		},
-		// Want []struct
-		{
-			config:  "users:\n  true",
-			entries: []Entry{{entryWarning, "incorrect type for \"users\" (want []struct)", 1}},
-		},
-		{
-			config:  "users:\n  4",
-			entries: []Entry{{entryWarning, "incorrect type for \"users\" (want []struct)", 1}},
-		},
-		{
-			config:  "users:\n  bad",
-			entries: []Entry{{entryWarning, "incorrect type for \"users\" (want []struct)", 1}},
-		},
-		{
-			config:  "users:\n  bad:",
-			entries: []Entry{{entryWarning, "incorrect type for \"users\" (want []struct)", 1}},
-		},
 		{
 			config: "users:\n  - name: good",
 		},
-		// Want struct within array
-		{
-			config:  "users:\n  - true",
-			entries: []Entry{{entryWarning, "incorrect type for \"users[0]\" (want struct)", 2}},
-		},
-		{
-			config:  "users:\n  - name: hi\n  - true",
-			entries: []Entry{{entryWarning, "incorrect type for \"users[1]\" (want struct)", 3}},
-		},
-		{
-			config:  "users:\n  - 4",
-			entries: []Entry{{entryWarning, "incorrect type for \"users[0]\" (want struct)", 2}},
-		},
-		{
-			config:  "users:\n  - bad",
-			entries: []Entry{{entryWarning, "incorrect type for \"users[0]\" (want struct)", 2}},
-		},
-		{
-			config:  "users:\n  - - bad",
-			entries: []Entry{{entryWarning, "incorrect type for \"users[0]\" (want struct)", 2}},
-		},
 	}
 
 	for i, tt := range tests {

config/validate/validate.go

@@ -23,12 +23,12 @@ import (
 
 	"github.com/flatcar/coreos-cloudinit/config"
 
-	"github.com/coreos/yaml"
+	"gopkg.in/yaml.v3"
 )
 
 var (
-	yamlLineError = regexp.MustCompile(`^YAML error: line (?P<line>[[:digit:]]+): (?P<msg>.*)$`)
-	yamlError     = regexp.MustCompile(`^YAML error: (?P<msg>.*)$`)
+	yamlLineError = regexp.MustCompile(`^yaml: line (?P<line>[[:digit:]]+): (?P<msg>.*)$`)
+	yamlError     = regexp.MustCompile(`^yaml: (?P<msg>.*)$`)
 )
 
 // Validate runs a series of validation tests against the given userdata and
@@ -77,9 +77,6 @@ func validateCloudConfig(config []byte, rules []rule) (report Report, err error)
 // any parsing issues into the provided report. Unrecoverable errors are
 // returned as an error.
 func parseCloudConfig(cfg []byte, report *Report) (node, error) {
-	yaml.UnmarshalMappingKeyTransform = func(nameIn string) (nameOut string) {
-		return nameIn
-	}
 	// unmarshal the config into an implicitly-typed form. The yaml library
 	// will implicitly convert types into their normalized form
 	// (e.g. 0744 -> 484, off -> false).
@@ -108,9 +105,6 @@ func parseCloudConfig(cfg []byte, report *Report) (node, error) {
 	w = normalizeNodeNames(w, report)
 
 	// unmarshal the config into the explicitly-typed form.
-	yaml.UnmarshalMappingKeyTransform = func(nameIn string) (nameOut string) {
-		return strings.Replace(nameIn, "-", "_", -1)
-	}
 	var strong config.CloudConfig
 	if err := yaml.Unmarshal([]byte(cfg), &strong); err != nil {
 		return node{}, err

config/validate/validate_test.go

@@ -28,7 +28,7 @@ func TestParseCloudConfig(t *testing.T) {
 	}{
 		{},
 		{
-			config: "	",
+			config:  "	",
 			entries: []Entry{{entryError, "found character that cannot start any token", 1}},
 		},
 		{
@@ -80,11 +80,11 @@ func TestValidateCloudConfig(t *testing.T) {
 			rules:  Rules,
 		},
 		{
-			config: "coreos:\n  update:\n    reboot-strategy: off",
+			config: "coreos:\n  update:\n    reboot_strategy: off",
 			rules:  Rules,
 		},
 		{
-			config: "coreos:\n  update:\n    reboot-strategy: false",
+			config: "coreos:\n  update:\n    reboot_strategy: false",
 			rules:  Rules,
 			report: Report{entries: []Entry{{entryError, "invalid value false", 3}}},
 		},

go.mod

@@ -1,15 +1,15 @@
 module github.com/flatcar/coreos-cloudinit
 
-go 1.18
+go 1.20
 
 require (
 	github.com/cloudsigma/cepgo v0.0.0-20140805094338-1bfc4895bf5c
 	github.com/coreos/go-systemd v0.0.0-20140326023052-4fbc5060a317
-	github.com/coreos/yaml v0.0.0-20141224210557-6b16a5714269
 	github.com/dotcloud/docker v0.11.2-0.20140522020950-55d41c3e21e1
 	github.com/sigma/vmw-ovflib v0.0.0-20150531125353-56b4f44581ca
 	github.com/stretchr/testify v1.8.2
 	github.com/vmware/vmw-guestinfo v0.0.0-20170622145319-ab8497750719
+	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (
@@ -19,7 +19,6 @@ require (
 	github.com/smartystreets/goconvey v1.7.2 // indirect
 	github.com/tarm/goserial v0.0.0-20140420040555-cdabc8d44e8e // indirect
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
-	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
 
 replace github.com/vmware/vmw-guestinfo => github.com/sigma/vmw-guestinfo v0.0.0-20170622145319-ab8497750719

go.sum

@@ -2,8 +2,6 @@ github.com/cloudsigma/cepgo v0.0.0-20140805094338-1bfc4895bf5c h1:RMx9SFbDpSl/jY
 github.com/cloudsigma/cepgo v0.0.0-20140805094338-1bfc4895bf5c/go.mod h1:6Pooq9nOzi3YTaXMNF+0W7POfgQhIm5z8RquoPB9Sf4=
 github.com/coreos/go-systemd v0.0.0-20140326023052-4fbc5060a317 h1:OJi3CY9dHDNVEdfBSMxkV6W6ay3YFxl9ThzgigsDVlM=
 github.com/coreos/go-systemd v0.0.0-20140326023052-4fbc5060a317/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
-github.com/coreos/yaml v0.0.0-20141224210557-6b16a5714269 h1:/1sjrpK5Mb6IwyFOKd+u7321tXfNAsj0Ci8CivZmSlo=
-github.com/coreos/yaml v0.0.0-20141224210557-6b16a5714269/go.mod h1:Bl1D/T9QJhVdu6eFoLrGxN90+admDLGaLz2HXH/VzDc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=