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56 changes: 55 additions & 1 deletion pkg/generators/openapi.go
Original file line number Diff line number Diff line change
Expand Up @@ -933,7 +933,7 @@ func mustEnforceDefault(t *types.Type, omitEmpty bool) (interface{}, error) {
return mustEnforceDefault(t.Members[0].Type, omitEmpty)
}

return map[string]interface{}{}, nil
return structZeroDefault(t)
case types.Builtin:
if !omitEmpty {
if zero, ok := openapi.OpenAPIZeroValue(t.String()); ok {
Expand All @@ -948,6 +948,60 @@ func mustEnforceDefault(t *types.Type, omitEmpty bool) (interface{}, error) {
}
}

// structZeroDefault builds a zero-value default for a struct type that includes
// zero values for all required (non-optional) fields. This ensures the generated
// default satisfies the schema's required constraints.
func structZeroDefault(t *types.Type) (interface{}, error) {
for t.Kind == types.Pointer {
t = t.Elem
}
result := map[string]interface{}{}
for _, m := range t.Members {
if hasOpenAPITagValue(m.CommentLines, tagValueFalse) {
continue
}
if shouldInlineMembers(&m) {
inlined, err := structZeroDefault(m.Type)
if err != nil {
return nil, err
}
if inlinedMap, ok := inlined.(map[string]interface{}); ok {
for k, v := range inlinedMap {
result[k] = v
}
}
continue
}
name := getReferableName(&m)
if name == "" {
continue
}
// Skip unexported fields with no JSON tag, they are not
// serialized and do not appear in the OpenAPI schema.
jsonTags := getJsonTags(&m)
if len(jsonTags) == 0 && len(m.Name) > 0 && strings.ToLower(m.Name[:1]) == m.Name[:1] {
continue
}
optional, err := isOptional(&m)
if err != nil {
return nil, err
}
if optional {
continue
}
// Include zero value for this required field
memberOmitEmpty := hasOmitemptyTag(&m)
zero, err := mustEnforceDefault(m.Type, memberOmitEmpty)
if err != nil {
return nil, err
}
if zero != nil {
result[name] = zero
}
}
return result, nil
}

func (g openAPITypeWriter) generateDefault(comments []string, t *types.Type, omitEmpty bool, commentOwningType *types.Type) error {
def, ref, err := defaultFromComments(comments, commentOwningType.Name.Package, t)
if err != nil {
Expand Down
143 changes: 140 additions & 3 deletions pkg/generators/openapi_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -493,7 +493,7 @@ Properties: map[string]spec.Schema{
"Field": {
SchemaProps: spec.SchemaProps{
Description: "A struct field",
Default: map[string]interface {}{},
Default: map[string]interface {}{"String":""},
Ref: ref("example.com/base/foo.Nested"),
},
},
Expand Down Expand Up @@ -613,7 +613,7 @@ Properties: map[string]spec.Schema{
"Nested": {
SchemaProps: spec.SchemaProps{
Description: "An embedded struct field",
Default: map[string]interface {}{},
Default: map[string]interface {}{"String":""},
Ref: ref("example.com/base/foo.Nested"),
},
},
Expand Down Expand Up @@ -2424,7 +2424,7 @@ func TestMustEnforceDefaultStruct(t *testing.T) {
},
"Regular": {
SchemaProps: spec.SchemaProps{
Default: map[string]interface{}{},
Default: map[string]interface{}{"Field": ""},
Ref: ref("example.com/base/foo.NothingSpecial"),
},
},
Expand All @@ -2440,6 +2440,143 @@ func TestMustEnforceDefaultStruct(t *testing.T) {
})
}

func TestStructZeroDefault(t *testing.T) {
tests := []struct {
name string
typ *types.Type
expected interface{}
}{
{
name: "empty struct",
typ: &types.Type{
Kind: types.Struct,
Members: []types.Member{},
},
expected: map[string]interface{}{},
},
{
name: "required string field",
typ: &types.Type{
Kind: types.Struct,
Members: []types.Member{
{
Name: "Name",
Type: types.String,
Tags: `json:"Name"`,
},
},
},
expected: map[string]interface{}{"Name": ""},
},
{
name: "optional field skipped",
typ: &types.Type{
Kind: types.Struct,
Members: []types.Member{
{
Name: "Name",
Type: types.String,
Tags: `json:"Name,omitempty"`,
CommentLines: []string{"+optional"},
},
},
},
expected: map[string]interface{}{},
},
{
name: "required int field",
typ: &types.Type{
Kind: types.Struct,
Members: []types.Member{
{
Name: "Count",
Type: types.Int32,
Tags: `json:"Count"`,
},
},
},
expected: map[string]interface{}{"Count": float64(0)},
},
{
name: "unexported field without json tag skipped",
typ: &types.Type{
Kind: types.Struct,
Members: []types.Member{
{
Name: "hidden",
Type: types.String,
},
},
},
expected: map[string]interface{}{},
},
{
name: "openapi-gen=false field skipped",
typ: &types.Type{
Kind: types.Struct,
Members: []types.Member{
{
Name: "Skipped",
Type: types.String,
Tags: `json:"Skipped"`,
CommentLines: []string{"+k8s:openapi-gen=false"},
},
},
},
expected: map[string]interface{}{},
},
{
name: "pointer to struct is dereferenced",
typ: &types.Type{
Kind: types.Pointer,
Elem: &types.Type{
Kind: types.Struct,
Members: []types.Member{
{
Name: "Field",
Type: types.String,
Tags: `json:"Field"`,
},
},
},
},
expected: map[string]interface{}{"Field": ""},
},
{
name: "mixed required and optional fields",
typ: &types.Type{
Kind: types.Struct,
Members: []types.Member{
{
Name: "Required",
Type: types.String,
Tags: `json:"Required"`,
},
{
Name: "Optional",
Type: types.String,
Tags: `json:"Optional,omitempty"`,
CommentLines: []string{"+optional"},
},
},
},
expected: map[string]interface{}{"Required": ""},
},
}

for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
result, err := structZeroDefault(tt.typ)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if !cmp.Equal(result, tt.expected) {
t.Errorf("wrong result:\n%s", cmp.Diff(tt.expected, result))
}
})
}
}

func TestMarkerComments(t *testing.T) {
inputFile := `
package foo
Expand Down
10 changes: 8 additions & 2 deletions test/integration/go.mod
Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@ replace k8s.io/kube-openapi => ../../

require (
github.com/emicklei/go-restful/v3 v3.13.0
github.com/getkin/kin-openapi v0.103.0
github.com/getkin/kin-openapi v0.135.0
github.com/onsi/ginkgo/v2 v2.19.0
github.com/onsi/gomega v1.33.1
k8s.io/kube-openapi v0.0.0
Expand All @@ -33,8 +33,14 @@ require (
github.com/google/gnostic-models v0.7.0 // indirect
github.com/google/go-cmp v0.7.0 // indirect
github.com/google/pprof v0.0.0-20240727154555-813a5fbdbec8 // indirect
github.com/invopop/yaml v0.1.0 // indirect
github.com/josharian/intern v1.0.0 // indirect
github.com/mailru/easyjson v0.7.7 // indirect
Comment thread
arthurbdiniz marked this conversation as resolved.
github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 // indirect
github.com/oasdiff/yaml v0.0.9 // indirect
github.com/oasdiff/yaml3 v0.0.9 // indirect
github.com/perimeterx/marshmallow v1.1.5 // indirect
github.com/spf13/pflag v1.0.10 // indirect
github.com/woodsbury/decimal128 v1.3.0 // indirect
go.yaml.in/yaml/v3 v3.0.4 // indirect
golang.org/x/mod v0.33.0 // indirect
golang.org/x/net v0.50.0 // indirect
Expand Down
34 changes: 18 additions & 16 deletions test/integration/go.sum
Original file line number Diff line number Diff line change
Expand Up @@ -4,17 +4,15 @@ 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=
github.com/emicklei/go-restful/v3 v3.13.0 h1:C4Bl2xDndpU6nJ4bc1jXd+uTmYPVUwkD6bFY/oTyCes=
github.com/emicklei/go-restful/v3 v3.13.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
github.com/getkin/kin-openapi v0.103.0 h1:F5wAtaQvPWxKCAYZ69LgHAThgu16p4u41VQtbn1U8LA=
github.com/getkin/kin-openapi v0.103.0/go.mod h1:w4lRPHiyOdwGbOkLIyk+P0qCwlu7TXPCHD/64nSXzgE=
github.com/getkin/kin-openapi v0.135.0 h1:751SjYfbiwqukYuVjwYEIKNfrSwS5YpA7DZnKSwQgtg=
github.com/getkin/kin-openapi v0.135.0/go.mod h1:6dd5FJl6RdX4usBtFBaQhk9q62Yb2J0Mk5IhUO/QqFI=
github.com/go-logr/logr v1.4.2 h1:6pFjapn8bFcIbiKo3XT4j/BhANplGihG6tvd+8rYgrY=
github.com/go-logr/logr v1.4.2/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
github.com/go-openapi/jsonpointer v0.19.5/go.mod h1:Pl9vOtqEWErmShwVjC8pYs9cog34VGT37dQOVbmoatg=
github.com/go-openapi/jsonpointer v0.19.6/go.mod h1:osyAmYz/mB/C3I+WsTTSgw1ONzaLJoLCyoi6/zppojs=
github.com/go-openapi/jsonpointer v0.21.0 h1:YgdVicSA9vH5RiHs9TZW5oyafXZFc6+2Vc1rr/O9oNQ=
github.com/go-openapi/jsonpointer v0.21.0/go.mod h1:IUyH9l/+uyhIYQ/PXVA41Rexl+kOkAPDdXEYns6fzUY=
github.com/go-openapi/jsonreference v0.20.2 h1:3sVjiK66+uXK/6oQ8xgcRKcFgQ5KXa2KvnJRumpMGbE=
github.com/go-openapi/jsonreference v0.20.2/go.mod h1:Bl1zwGIM8/wsvqjsOQLJ/SH+En5Ap4rVB5KVcIDZG2k=
github.com/go-openapi/swag v0.19.5/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
github.com/go-openapi/swag v0.22.3/go.mod h1:UzaqsxGiab7freDnrUUra0MwWfN/q7tE4j+VcZ0yl14=
github.com/go-openapi/swag v0.25.4 h1:OyUPUFYDPDBMkqyxOTkqDYFnrhuhi9NR6QVUvIochMU=
github.com/go-openapi/swag v0.25.4/go.mod h1:zNfJ9WZABGHCFg2RnY0S4IOkAcVTzJ6z2Bi+Q4i6qFQ=
Expand Down Expand Up @@ -48,31 +46,37 @@ github.com/go-openapi/testify/v2 v2.0.2 h1:X999g3jeLcoY8qctY/c/Z8iBHTbwLz7R2WXd6
github.com/go-openapi/testify/v2 v2.0.2/go.mod h1:HCPmvFFnheKK2BuwSA0TbbdxJ3I16pjwMkYkP4Ywn54=
github.com/go-task/slim-sprig/v3 v3.0.0 h1:sUs3vkvUymDpBKi3qH1YSqBQk9+9D/8M2mN1vB6EwHI=
github.com/go-task/slim-sprig/v3 v3.0.0/go.mod h1:W848ghGpv3Qj3dhTPRyJypKRiqCdHZiAzKg9hl15HA8=
github.com/go-test/deep v1.0.8 h1:TDsG77qcSprGbC6vTN8OuXp5g+J+b5Pcguhf7Zt61VM=
github.com/go-test/deep v1.0.8/go.mod h1:5C2ZWiW0ErCdrYzpqxLbTX7MG14M9iiw8DgHncVwcsE=
github.com/google/gnostic-models v0.7.0 h1:qwTtogB15McXDaNqTZdzPJRHvaVJlAl+HVQnLmJEJxo=
github.com/google/gnostic-models v0.7.0/go.mod h1:whL5G0m6dmc5cPxKc5bdKdEN3UjI7OUGxBlw57miDrQ=
github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
github.com/google/pprof v0.0.0-20240727154555-813a5fbdbec8 h1:FKHo8hFI3A+7w0aUQuYXQ+6EN5stWmeY/AZqtM8xk9k=
github.com/google/pprof v0.0.0-20240727154555-813a5fbdbec8/go.mod h1:K1liHPHnj73Fdn/EKuT8nrFqBihUSKXoLYU0BuatOYo=
github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
github.com/invopop/yaml v0.1.0 h1:YW3WGUoJEXYfzWBjn00zIlrw7brGVD0fUKRYDPAPhrc=
github.com/invopop/yaml v0.1.0/go.mod h1:2XuRLgs/ouIrW3XNzuNj7J3Nvu/Dig5MXvbCEdiBN3Q=
github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 h1:RWengNIwukTxcDr9M+97sNutRR1RKhG96O6jWumTTnw=
github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826/go.mod h1:TaXosZuwdSHYgviHp1DAtfrULt5eUgsSMsZf+YrPgl8=
github.com/oasdiff/yaml v0.0.9 h1:zQOvd2UKoozsSsAknnWoDJlSK4lC0mpmjfDsfqNwX48=
github.com/oasdiff/yaml v0.0.9/go.mod h1:8lvhgJG4xiKPj3HN5lDow4jZHPlx1i7dIwzkdAo6oAM=
github.com/oasdiff/yaml3 v0.0.9 h1:rWPrKccrdUm8J0F3sGuU+fuh9+1K/RdJlWF7O/9yw2g=
github.com/oasdiff/yaml3 v0.0.9/go.mod h1:y5+oSEHCPT/DGrS++Wc/479ERge0zTFxaF8PbGKcg2o=
github.com/onsi/ginkgo/v2 v2.19.0 h1:9Cnnf7UHo57Hy3k6/m5k3dRfGTMXGvxhHFvkDTCTpvA=
github.com/onsi/ginkgo/v2 v2.19.0/go.mod h1:rlwLi9PilAFJ8jCg9UE1QP6VBpd6/xj3SRC0d6TU0To=
github.com/onsi/gomega v1.33.1 h1:dsYjIxxSR755MDmKVsaFQTE22ChNBcuuTWgkUDSubOk=
github.com/onsi/gomega v1.33.1/go.mod h1:U4R44UsT+9eLIaYRB2a5qajjtQYn0hauxvRm16AVYg0=
github.com/perimeterx/marshmallow v1.1.5 h1:a2LALqQ1BlHM8PZblsDdidgv1mWi1DgC2UmX50IvK2s=
github.com/perimeterx/marshmallow v1.1.5/go.mod h1:dsXbUu8CRzfYP5a87xpp0xq9S3u0Vchtcl8we9tYaXw=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ=
Expand All @@ -82,13 +86,15 @@ github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3A
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
github.com/ugorji/go/codec v1.2.7 h1:YPXUKf7fYbp/y8xloBqZOw2qaVggbfwMlI8WM3wZUJ0=
github.com/ugorji/go/codec v1.2.7/go.mod h1:WGN1fab3R1fzQlVQTkfxVtIBhWDRqOviHU95kRgeqEY=
github.com/woodsbury/decimal128 v1.3.0 h1:8pffMNWIlC0O5vbyHWFZAt5yWvWcrHA+3ovIIjVWss0=
github.com/woodsbury/decimal128 v1.3.0/go.mod h1:C5UTmyTjW3JftjUFzOVhC20BEQa2a4ZKOB5I6Zjb+ds=
go.yaml.in/yaml/v3 v3.0.4 h1:tfq32ie2Jv2UxXFdLJdh3jXuOzWiL1fo0bu/FbuKpbc=
go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg=
golang.org/x/mod v0.33.0 h1:tHFzIWbBifEmbwtGz65eaWyGiGZatSrT9prnU8DbVL8=
Expand All @@ -110,13 +116,9 @@ golang.org/x/tools/go/packages/packagestest v0.1.1-deprecated/go.mod h1:RVAQXBGN
google.golang.org/protobuf v1.35.1 h1:m3LfL6/Ca+fqnjnlqQXNpFPABW1UD7mjh8KO2mKFytA=
google.golang.org/protobuf v1.35.1/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
k8s.io/gengo/v2 v2.0.0-20250922181213-ec3ebc5fd46b h1:gMplByicHV/TJBizHd9aVEsTYoJBnnUAT5MHlTkbjhQ=
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4 changes: 2 additions & 2 deletions test/integration/pkg/generated/openapi_generated.go

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