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unstructured helpers: print path in error

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This commit is contained in:
Nikhita Raghunath 2018-01-12 18:57:07 +05:30
parent eb3196b1b4
commit 4139594e66
1 changed files with 31 additions and 25 deletions
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56
staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/unstructured/helpers.go
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@ -43,14 +43,15 @@ func NestedFieldCopy(obj map[string]interface{}, fields ...string) (interface{},
func nestedFieldNoCopy(obj map[string]interface{}, fields ...string) (interface{}, bool, error) { func nestedFieldNoCopy(obj map[string]interface{}, fields ...string) (interface{}, bool, error) {
var val interface{} = obj var val interface{} = obj
for _, field := range fields {
for i, field := range fields {
if m, ok := val.(map[string]interface{}); ok { if m, ok := val.(map[string]interface{}); ok {
val, ok = m[field] val, ok = m[field]
if !ok { if !ok {
return nil, false, nil return nil, false, nil
} }
} else { } else {
return nil, false, fmt.Errorf("%v is of the type %T, expected map[string]interface{}", val, val) return nil, false, fmt.Errorf("%v accessor error: %v is of the type %T, expected map[string]interface{}", jsonPath(fields[:i+1]), val, val)
} }
} }
return val, true, nil return val, true, nil
@ -65,7 +66,7 @@ func NestedString(obj map[string]interface{}, fields ...string) (string, bool, e
} }
s, ok := val.(string) s, ok := val.(string)
if !ok { if !ok {
return "", false, fmt.Errorf("%v is of the type %T, expected string", val, val) return "", false, fmt.Errorf("%v accessor error: %v is of the type %T, expected string", jsonPath(fields), val, val)
} }
return s, true, nil return s, true, nil
} }
@ -79,7 +80,7 @@ func NestedBool(obj map[string]interface{}, fields ...string) (bool, bool, error
} }
b, ok := val.(bool) b, ok := val.(bool)
if !ok { if !ok {
return false, false, fmt.Errorf("%v is of the type %T, expected bool", val, val) return false, false, fmt.Errorf("%v accessor error: %v is of the type %T, expected bool", jsonPath(fields), val, val)
} }
return b, true, nil return b, true, nil
} }
@ -93,7 +94,7 @@ func NestedFloat64(obj map[string]interface{}, fields ...string) (float64, bool,
} }
f, ok := val.(float64) f, ok := val.(float64)
if !ok { if !ok {
return 0, false, fmt.Errorf("%v is of the type %T, expected float64", val, val) return 0, false, fmt.Errorf("%v accessor error: %v is of the type %T, expected float64", jsonPath(fields), val, val)
} }
return f, true, nil return f, true, nil
} }
@ -107,7 +108,7 @@ func NestedInt64(obj map[string]interface{}, fields ...string) (int64, bool, err
} }
i, ok := val.(int64) i, ok := val.(int64)
if !ok { if !ok {
return 0, false, fmt.Errorf("%v is of the type %T, expected int64", val, val) return 0, false, fmt.Errorf("%v accessor error: %v is of the type %T, expected int64", jsonPath(fields), val, val)
} }
return i, true, nil return i, true, nil
} }
@ -121,14 +122,14 @@ func NestedStringSlice(obj map[string]interface{}, fields ...string) ([]string,
} }
m, ok := val.([]interface{}) m, ok := val.([]interface{})
if !ok { if !ok {
return nil, false, fmt.Errorf("%v is of the type %T, expected []interface{}", val, val) return nil, false, fmt.Errorf("%v accessor error: %v is of the type %T, expected []interface{}", jsonPath(fields), val, val)
} }
strSlice := make([]string, 0, len(m)) strSlice := make([]string, 0, len(m))
for _, v := range m { for _, v := range m {
if str, ok := v.(string); ok { if str, ok := v.(string); ok {
strSlice = append(strSlice, str) strSlice = append(strSlice, str)
} else { } else {
return nil, false, fmt.Errorf("contains non-string key in the slice: %v is of the type %T, expected string", v, v) return nil, false, fmt.Errorf("%v accessor error: contains non-string key in the slice: %v is of the type %T, expected string", jsonPath(fields), v, v)
} }
} }
return strSlice, true, nil return strSlice, true, nil
@ -143,7 +144,7 @@ func NestedSlice(obj map[string]interface{}, fields ...string) ([]interface{}, b
} }
_, ok := val.([]interface{}) _, ok := val.([]interface{})
if !ok { if !ok {
return nil, false, fmt.Errorf("%v is of the type %T, expected []interface{}", val, val) return nil, false, fmt.Errorf("%v accessor error: %v is of the type %T, expected []interface{}", jsonPath(fields), val, val)
} }
return runtime.DeepCopyJSONValue(val).([]interface{}), true, nil return runtime.DeepCopyJSONValue(val).([]interface{}), true, nil
} }
@ -160,7 +161,7 @@ func NestedStringMap(obj map[string]interface{}, fields ...string) (map[string]s
if str, ok := v.(string); ok { if str, ok := v.(string); ok {
strMap[k] = str strMap[k] = str
} else { } else {
return nil, false, fmt.Errorf("contains non-string key in the map: %v is of the type %T, expected string", v, v) return nil, false, fmt.Errorf("%v accessor error: contains non-string key in the map: %v is of the type %T, expected string", jsonPath(fields), v, v)
} }
} }
return strMap, true, nil return strMap, true, nil
@ -185,25 +186,26 @@ func nestedMapNoCopy(obj map[string]interface{}, fields ...string) (map[string]i
} }
m, ok := val.(map[string]interface{}) m, ok := val.(map[string]interface{})
if !ok { if !ok {
return nil, false, fmt.Errorf("%v is of the type %T, expected map[string]interface{}", val, val) return nil, false, fmt.Errorf("%v accessor error: %v is of the type %T, expected map[string]interface{}", jsonPath(fields), val, val)
} }
return m, true, nil return m, true, nil
} }
// SetNestedField sets the value of a nested field to a deep copy of the value provided. // SetNestedField sets the value of a nested field to a deep copy of the value provided.
// Returns false if value cannot be set because one of the nesting levels is not a map[string]interface{}. // Returns an error if value cannot be set because one of the nesting levels is not a map[string]interface{}.
func SetNestedField(obj map[string]interface{}, value interface{}, fields ...string) bool { func SetNestedField(obj map[string]interface{}, value interface{}, fields ...string) error {
return setNestedFieldNoCopy(obj, runtime.DeepCopyJSONValue(value), fields...) return setNestedFieldNoCopy(obj, runtime.DeepCopyJSONValue(value), fields...)
} }
func setNestedFieldNoCopy(obj map[string]interface{}, value interface{}, fields ...string) bool { func setNestedFieldNoCopy(obj map[string]interface{}, value interface{}, fields ...string) error {
m := obj m := obj
for _, field := range fields[:len(fields)-1] {
for i, field := range fields[:len(fields)-1] {
if val, ok := m[field]; ok { if val, ok := m[field]; ok {
if valMap, ok := val.(map[string]interface{}); ok { if valMap, ok := val.(map[string]interface{}); ok {
m = valMap m = valMap
} else { } else {
return false return fmt.Errorf("value cannot be set because %v is not a map[string]interface{}", jsonPath(fields[:i+1]))
} }
} else { } else {
newVal := make(map[string]interface{}) newVal := make(map[string]interface{})
@ -212,12 +214,12 @@ func setNestedFieldNoCopy(obj map[string]interface{}, value interface{}, fields
} }
} }
m[fields[len(fields)-1]] = value m[fields[len(fields)-1]] = value
return true return nil
} }
// SetNestedStringSlice sets the string slice value of a nested field. // SetNestedStringSlice sets the string slice value of a nested field.
// Returns false if value cannot be set because one of the nesting levels is not a map[string]interface{}. // Returns an error if value cannot be set because one of the nesting levels is not a map[string]interface{}.
func SetNestedStringSlice(obj map[string]interface{}, value []string, fields ...string) bool { func SetNestedStringSlice(obj map[string]interface{}, value []string, fields ...string) error {
m := make([]interface{}, 0, len(value)) // convert []string into []interface{} m := make([]interface{}, 0, len(value)) // convert []string into []interface{}
for _, v := range value { for _, v := range value {
m = append(m, v) m = append(m, v)
@ -226,14 +228,14 @@ func SetNestedStringSlice(obj map[string]interface{}, value []string, fields ...
} }
// SetNestedSlice sets the slice value of a nested field. // SetNestedSlice sets the slice value of a nested field.
// Returns false if value cannot be set because one of the nesting levels is not a map[string]interface{}. // Returns an error if value cannot be set because one of the nesting levels is not a map[string]interface{}.
func SetNestedSlice(obj map[string]interface{}, value []interface{}, fields ...string) bool { func SetNestedSlice(obj map[string]interface{}, value []interface{}, fields ...string) error {
return SetNestedField(obj, value, fields...) return SetNestedField(obj, value, fields...)
} }
// SetNestedStringMap sets the map[string]string value of a nested field. // SetNestedStringMap sets the map[string]string value of a nested field.
// Returns false if value cannot be set because one of the nesting levels is not a map[string]interface{}. // Returns an error if value cannot be set because one of the nesting levels is not a map[string]interface{}.
func SetNestedStringMap(obj map[string]interface{}, value map[string]string, fields ...string) bool { func SetNestedStringMap(obj map[string]interface{}, value map[string]string, fields ...string) error {
m := make(map[string]interface{}, len(value)) // convert map[string]string into map[string]interface{} m := make(map[string]interface{}, len(value)) // convert map[string]string into map[string]interface{}
for k, v := range value { for k, v := range value {
m[k] = v m[k] = v
@ -242,8 +244,8 @@ func SetNestedStringMap(obj map[string]interface{}, value map[string]string, fie
} }
// SetNestedMap sets the map[string]interface{} value of a nested field. // SetNestedMap sets the map[string]interface{} value of a nested field.
// Returns false if value cannot be set because one of the nesting levels is not a map[string]interface{}. // Returns an error if value cannot be set because one of the nesting levels is not a map[string]interface{}.
func SetNestedMap(obj map[string]interface{}, value map[string]interface{}, fields ...string) bool { func SetNestedMap(obj map[string]interface{}, value map[string]interface{}, fields ...string) error {
return SetNestedField(obj, value, fields...) return SetNestedField(obj, value, fields...)
} }
@ -268,6 +270,10 @@ func getNestedString(obj map[string]interface{}, fields ...string) string {
return val return val
} }
func jsonPath(fields []string) string {
return "." + strings.Join(fields, ".")
}
func extractOwnerReference(v map[string]interface{}) metav1.OwnerReference { func extractOwnerReference(v map[string]interface{}) metav1.OwnerReference {
// though this field is a *bool, but when decoded from JSON, it's // though this field is a *bool, but when decoded from JSON, it's
// unmarshalled as bool. // unmarshalled as bool.