mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-07-29 14:37:00 +00:00
Discard null values in complex objects in strategic patch
In strategic patch, if key does not exist in original, value of this new key is not distilled by discarding the null values. That brings about in key creation step, null values are also patched. However, during the update process of this key in subsequent patches, these null values are deleted and this hurts the idempotency of strategic patch. This PR adds discard mechanism for null values if key does not exist in original. It traverses all nested objects.
This commit is contained in:
Arda Güçlü
parent
7cfe0ca828
commit
9b5d9c70fc
@ -1330,7 +1330,11 @@ func mergeMap(original, patch map[string]interface{}, schema LookupPatchMeta, me
|
||||
if !ok {
|
||||
if !isDeleteList {
|
||||
// If it's not in the original document, just take the patch value.
|
||||
original[k] = patchV
|
||||
if mergeOptions.IgnoreUnmatchedNulls {
|
||||
original[k] = discardNullValuesFromPatch(patchV)
|
||||
} else {
|
||||
original[k] = patchV
|
||||
}
|
||||
}
|
||||
continue
|
||||
}
|
||||
@ -1339,7 +1343,11 @@ func mergeMap(original, patch map[string]interface{}, schema LookupPatchMeta, me
|
||||
patchType := reflect.TypeOf(patchV)
|
||||
if originalType != patchType {
|
||||
if !isDeleteList {
|
||||
original[k] = patchV
|
||||
if mergeOptions.IgnoreUnmatchedNulls {
|
||||
original[k] = discardNullValuesFromPatch(patchV)
|
||||
} else {
|
||||
original[k] = patchV
|
||||
}
|
||||
}
|
||||
continue
|
||||
}
|
||||
@ -1375,6 +1383,29 @@ func mergeMap(original, patch map[string]interface{}, schema LookupPatchMeta, me
|
||||
return original, nil
|
||||
}
|
||||
|
||||
// discardNullValuesFromPatch discards all null values from patch.
|
||||
// It traverses for all slices and map types to discard all nulls.
|
||||
func discardNullValuesFromPatch(patchV interface{}) interface{} {
|
||||
switch patchV.(type) {
|
||||
case map[string]interface{}:
|
||||
for k, v := range patchV.(map[string]interface{}) {
|
||||
if v == nil {
|
||||
delete(patchV.(map[string]interface{}), k)
|
||||
} else {
|
||||
discardNullValuesFromPatch(v)
|
||||
}
|
||||
}
|
||||
case []interface{}:
|
||||
patchS := patchV.([]interface{})
|
||||
for i, v := range patchV.([]interface{}) {
|
||||
patchS[i] = discardNullValuesFromPatch(v)
|
||||
}
|
||||
return patchS
|
||||
}
|
||||
|
||||
return patchV
|
||||
}
|
||||
|
||||
// mergeMapHandler handles how to merge `patchV` whose key is `key` with `original` respecting
|
||||
// fieldPatchStrategy and mergeOptions.
|
||||
func mergeMapHandler(original, patch interface{}, schema LookupPatchMeta,
|
||||
|
||||
@ -6713,6 +6713,106 @@ func TestUnknownField(t *testing.T) {
|
||||
ExpectedThreeWay: `{}`,
|
||||
ExpectedThreeWayResult: `{"array":[1,2,3],"complex":{"nested":true},"name":"foo","scalar":true}`,
|
||||
},
|
||||
"no diff even if modified null": {
|
||||
Original: `{"array":[1,2,3],"complex":{"nested":true},"name":"foo","scalar":true}`,
|
||||
Current: `{"array":[1,2,3],"complex":{"nested":true},"name":"foo","scalar":true}`,
|
||||
Modified: `{"array":[1,2,3],"complex":{"nested":true},"complex_nullable":{"key":null},"name":"foo","scalar":true}`,
|
||||
|
||||
ExpectedTwoWay: `{"complex_nullable":{"key":null}}`,
|
||||
ExpectedTwoWayResult: `{"array":[1,2,3],"complex":{"nested":true},"complex_nullable":{},"name":"foo","scalar":true}`,
|
||||
ExpectedThreeWay: `{"complex_nullable":{"key":null}}`,
|
||||
ExpectedThreeWayResult: `{"array":[1,2,3],"complex":{"nested":true},"complex_nullable":{},"name":"foo","scalar":true}`,
|
||||
},
|
||||
"discard nulls in nested and adds not nulls": {
|
||||
Original: `{"array":[1,2,3],"complex":{"nested":true},"name":"foo","scalar":true}`,
|
||||
Current: `{"array":[1,2,3],"complex":{"nested":true},"name":"foo","scalar":true}`,
|
||||
Modified: `{"array":[1,2,3],"complex":{"nested":true},"complex_nullable":{"key":{"keynotnull":"value","keynull":null}},"name":"foo","scalar":true}`,
|
||||
|
||||
ExpectedTwoWay: `{"complex_nullable":{"key":{"keynotnull":"value","keynull":null}}}`,
|
||||
ExpectedTwoWayResult: `{"array":[1,2,3],"complex":{"nested":true},"complex_nullable":{"key":{"keynotnull":"value"}},"name":"foo","scalar":true}`,
|
||||
ExpectedThreeWay: `{"complex_nullable":{"key":{"keynotnull":"value","keynull":null}}}`,
|
||||
ExpectedThreeWayResult: `{"array":[1,2,3],"complex":{"nested":true},"complex_nullable":{"key":{"keynotnull":"value"}},"name":"foo","scalar":true}`,
|
||||
},
|
||||
"discard if modified all nulls": {
|
||||
Original: `{}`,
|
||||
Current: `{}`,
|
||||
Modified: `{"complex":{"nested":null}}`,
|
||||
|
||||
ExpectedTwoWay: `{"complex":{"nested":null}}`,
|
||||
ExpectedTwoWayResult: `{"complex":{}}`,
|
||||
ExpectedThreeWay: `{"complex":{"nested":null}}`,
|
||||
ExpectedThreeWayResult: `{"complex":{}}`,
|
||||
},
|
||||
"add only not nulls": {
|
||||
Original: `{}`,
|
||||
Current: `{}`,
|
||||
Modified: `{"complex":{"nested":null,"nested2":"foo"}}`,
|
||||
|
||||
ExpectedTwoWay: `{"complex":{"nested":null,"nested2":"foo"}}`,
|
||||
ExpectedTwoWayResult: `{"complex":{"nested2":"foo"}}`,
|
||||
ExpectedThreeWay: `{"complex":{"nested":null,"nested2":"foo"}}`,
|
||||
ExpectedThreeWayResult: `{"complex":{"nested2":"foo"}}`,
|
||||
},
|
||||
"null values in original are preserved": {
|
||||
Original: `{"thing":null}`,
|
||||
Current: `{"thing":null}`,
|
||||
Modified: `{"nested":{"value":5},"thing":null}`,
|
||||
|
||||
ExpectedTwoWay: `{"nested":{"value":5}}`,
|
||||
ExpectedTwoWayResult: `{"nested":{"value":5},"thing":null}`,
|
||||
ExpectedThreeWay: `{"nested":{"value":5}}`,
|
||||
ExpectedThreeWayResult: `{"nested":{"value":5},"thing":null}`,
|
||||
},
|
||||
"nested null values in original are preserved": {
|
||||
Original: `{"complex":{"key":null},"thing":null}`,
|
||||
Current: `{"complex":{"key":null},"thing":null}`,
|
||||
Modified: `{"complex":{"key":null},"nested":{"value":5},"thing":null}`,
|
||||
|
||||
ExpectedTwoWay: `{"nested":{"value":5}}`,
|
||||
ExpectedTwoWayResult: `{"complex":{"key":null},"nested":{"value":5},"thing":null}`,
|
||||
ExpectedThreeWay: `{"nested":{"value":5}}`,
|
||||
ExpectedThreeWayResult: `{"complex":{"key":null},"nested":{"value":5},"thing":null}`,
|
||||
},
|
||||
"add empty slices": {
|
||||
Original: `{"array":[1,2,3],"complex":{"nested":true},"name":"foo","scalar":true}`,
|
||||
Current: `{"array":[1,2,3],"complex":{"nested":true},"name":"foo","scalar":true}`,
|
||||
Modified: `{"array":[1,2,3],"complex":{"nested":true},"complex_nullable":[],"name":"foo","scalar":true}`,
|
||||
|
||||
ExpectedTwoWay: `{"complex_nullable":[]}`,
|
||||
ExpectedTwoWayResult: `{"array":[1,2,3],"complex":{"nested":true},"complex_nullable":[],"name":"foo","scalar":true}`,
|
||||
ExpectedThreeWay: `{"complex_nullable":[]}`,
|
||||
ExpectedThreeWayResult: `{"array":[1,2,3],"complex":{"nested":true},"complex_nullable":[],"name":"foo","scalar":true}`,
|
||||
},
|
||||
"filter nulls from nested slices": {
|
||||
Original: `{}`,
|
||||
Current: `{}`,
|
||||
Modified: `{"complex_nullable":[{"inner_one":{"key_one":"foo","key_two":null}}]}`,
|
||||
|
||||
ExpectedTwoWay: `{"complex_nullable":[{"inner_one":{"key_one":"foo","key_two":null}}]}`,
|
||||
ExpectedTwoWayResult: `{"complex_nullable":[{"inner_one":{"key_one":"foo"}}]}`,
|
||||
ExpectedThreeWay: `{"complex_nullable":[{"inner_one":{"key_one":"foo","key_two":null}}]}`,
|
||||
ExpectedThreeWayResult: `{"complex_nullable":[{"inner_one":{"key_one":"foo"}}]}`,
|
||||
},
|
||||
"filter if slice is all empty": {
|
||||
Original: `{}`,
|
||||
Current: `{}`,
|
||||
Modified: `{"complex_nullable":[{"inner_one":{"key_one":null,"key_two":null}}]}`,
|
||||
|
||||
ExpectedTwoWay: `{"complex_nullable":[{"inner_one":{"key_one":null,"key_two":null}}]}`,
|
||||
ExpectedTwoWayResult: `{"complex_nullable":[{"inner_one":{}}]}`,
|
||||
ExpectedThreeWay: `{"complex_nullable":[{"inner_one":{"key_one":null,"key_two":null}}]}`,
|
||||
ExpectedThreeWayResult: `{"complex_nullable":[{"inner_one":{}}]}`,
|
||||
},
|
||||
"not filter nulls from non-associative slice": {
|
||||
Original: `{}`,
|
||||
Current: `{}`,
|
||||
Modified: `{"complex_nullable":["key1",null,"key2"]}`,
|
||||
|
||||
ExpectedTwoWay: `{"complex_nullable":["key1",null,"key2"]}`,
|
||||
ExpectedTwoWayResult: `{"complex_nullable":["key1",null,"key2"]}`,
|
||||
ExpectedThreeWay: `{"complex_nullable":["key1",null,"key2"]}`,
|
||||
ExpectedThreeWayResult: `{"complex_nullable":["key1",null,"key2"]}`,
|
||||
},
|
||||
"added only": {
|
||||
Original: `{"name":"foo"}`,
|
||||
Current: `{"name":"foo"}`,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user