Golang json.Marshal函数代码示例

func (o *openAPI) findCommonParameters(routes []restful.Route) (map[interface{}]spec.Parameter, error) {
	commonParamsMap := make(map[interface{}]spec.Parameter, 0)
	paramOpsCountByName := make(map[interface{}]int, 0)
	paramNameKindToDataMap := make(map[interface{}]restful.ParameterData, 0)
	for _, route := range routes {
		routeParamDuplicateMap := make(map[interface{}]bool)
		s := ""
		for _, param := range route.ParameterDocs {
			m, _ := json.Marshal(param.Data())
			s += string(m) + "\n"
			key := mapKeyFromParam(param)
			if routeParamDuplicateMap[key] {
				msg, _ := json.Marshal(route.ParameterDocs)
				return commonParamsMap, fmt.Errorf("duplicate parameter %v for route %v, %v.", param.Data().Name, string(msg), s)
			}
			routeParamDuplicateMap[key] = true
			paramOpsCountByName[key]++
			paramNameKindToDataMap[key] = param.Data()
		}
	}
	for key, count := range paramOpsCountByName {
		if count == len(routes) {
			openAPIParam, err := o.buildParameter(paramNameKindToDataMap[key])
			if err != nil {
				return commonParamsMap, err
			}
			commonParamsMap[key] = openAPIParam
		}
	}
	return commonParamsMap, nil
}

// test the processItem function making the expected actions.
func TestProcessItem(t *testing.T) {
	pod := newDanglingPod()
	podBytes, err := json.Marshal(pod)
	if err != nil {
		t.Fatal(err)
	}
	testHandler := &fakeActionHandler{
		response: map[string]FakeResponse{
			"GET" + "/api/v1/namespaces/ns1/replicationcontrollers/owner1": {
				404,
				[]byte{},
			},
			"GET" + "/api/v1/namespaces/ns1/pods/ToBeDeletedPod": {
				200,
				podBytes,
			},
		},
	}
	podResource := []unversioned.GroupVersionResource{{Version: "v1", Resource: "pods"}}
	srv, clientConfig := testServerAndClientConfig(testHandler.ServeHTTP)
	defer srv.Close()
	clientConfig.ContentConfig.NegotiatedSerializer = serializer.DirectCodecFactory{CodecFactory: metaonly.NewMetadataCodecFactory()}
	metaOnlyClientPool := dynamic.NewClientPool(clientConfig, dynamic.LegacyAPIPathResolverFunc)
	clientConfig.ContentConfig.NegotiatedSerializer = nil
	clientPool := dynamic.NewClientPool(clientConfig, dynamic.LegacyAPIPathResolverFunc)
	gc, err := NewGarbageCollector(metaOnlyClientPool, clientPool, podResource)
	if err != nil {
		t.Fatal(err)
	}
	item := &node{
		identity: objectReference{
			OwnerReference: metatypes.OwnerReference{
				Kind:       pod.Kind,
				APIVersion: pod.APIVersion,
				Name:       pod.Name,
				UID:        pod.UID,
			},
			Namespace: pod.Namespace,
		},
		// owners are intentionally left empty. The processItem routine should get the latest item from the server.
		owners: nil,
	}
	err = gc.processItem(item)
	if err != nil {
		t.Errorf("Unexpected Error: %v", err)
	}
	expectedActionSet := sets.NewString()
	expectedActionSet.Insert("GET=/api/v1/namespaces/ns1/replicationcontrollers/owner1")
	expectedActionSet.Insert("DELETE=/api/v1/namespaces/ns1/pods/ToBeDeletedPod")
	expectedActionSet.Insert("GET=/api/v1/namespaces/ns1/pods/ToBeDeletedPod")

	actualActionSet := sets.NewString()
	for _, action := range testHandler.actions {
		actualActionSet.Insert(action.String())
	}
	if !expectedActionSet.Equal(actualActionSet) {
		t.Errorf("expected actions:\n%v\n but got:\n%v\nDifference:\n%v", expectedActionSet,
			actualActionSet, expectedActionSet.Difference(actualActionSet))
	}
}

func serilizeOrDie(t *testing.T, object interface{}) []byte {
	data, err := json.Marshal(object)
	if err != nil {
		t.Fatal(err)
	}
	return data
}

// StrategicMergePatch applies a strategic merge patch. The patch and the original document
// must be json encoded content. A patch can be created from an original and a modified document
// by calling CreateStrategicMergePatch.
func StrategicMergePatch(original, patch []byte, dataStruct interface{}) ([]byte, error) {
	if original == nil {
		original = []byte("{}")
	}

	if patch == nil {
		patch = []byte("{}")
	}

	originalMap := map[string]interface{}{}
	err := json.Unmarshal(original, &originalMap)
	if err != nil {
		return nil, errBadJSONDoc
	}

	patchMap := map[string]interface{}{}
	err = json.Unmarshal(patch, &patchMap)
	if err != nil {
		return nil, errBadJSONDoc
	}

	t, err := getTagStructType(dataStruct)
	if err != nil {
		return nil, err
	}

	result, err := mergeMap(originalMap, patchMap, t)
	if err != nil {
		return nil, err
	}

	return json.Marshal(result)
}

// CreateTwoWayMergePatch creates a patch that can be passed to StrategicMergePatch from an original
// document and a modified document, which are passed to the method as json encoded content. It will
// return a patch that yields the modified document when applied to the original document, or an error
// if either of the two documents is invalid.
func CreateTwoWayMergePatch(original, modified []byte, dataStruct interface{}, smPatchVersion StrategicMergePatchVersion, fns ...PreconditionFunc) ([]byte, error) {
	originalMap := map[string]interface{}{}
	if len(original) > 0 {
		if err := json.Unmarshal(original, &originalMap); err != nil {
			return nil, errBadJSONDoc
		}
	}

	modifiedMap := map[string]interface{}{}
	if len(modified) > 0 {
		if err := json.Unmarshal(modified, &modifiedMap); err != nil {
			return nil, errBadJSONDoc
		}
	}

	t, err := getTagStructType(dataStruct)
	if err != nil {
		return nil, err
	}

	patchMap, err := diffMaps(originalMap, modifiedMap, t, false, false, smPatchVersion)
	if err != nil {
		return nil, err
	}

	// Apply the preconditions to the patch, and return an error if any of them fail.
	for _, fn := range fns {
		if !fn(patchMap) {
			return nil, newErrPreconditionFailed(patchMap)
		}
	}

	return json.Marshal(patchMap)
}

// CreateThreeWayMergePatch reconciles a modified configuration with an original configuration,
// while preserving any changes or deletions made to the original configuration in the interim,
// and not overridden by the current configuration. All three documents must be passed to the
// method as json encoded content. It will return a strategic merge patch, or an error if any
// of the documents is invalid, or if there are any preconditions that fail against the modified
// configuration, or, if force is false and there are conflicts between the modified and current
// configurations.
func CreateThreeWayMergePatch(original, modified, current []byte, dataStruct interface{}, force bool, fns ...PreconditionFunc) ([]byte, error) {
	originalMap := map[string]interface{}{}
	if len(original) > 0 {
		if err := json.Unmarshal(original, &originalMap); err != nil {
			return nil, errBadJSONDoc
		}
	}

	modifiedMap := map[string]interface{}{}
	if len(modified) > 0 {
		if err := json.Unmarshal(modified, &modifiedMap); err != nil {
			return nil, errBadJSONDoc
		}
	}

	currentMap := map[string]interface{}{}
	if len(current) > 0 {
		if err := json.Unmarshal(current, &currentMap); err != nil {
			return nil, errBadJSONDoc
		}
	}

	t, err := getTagStructType(dataStruct)
	if err != nil {
		return nil, err
	}

	// The patch is the difference from current to modified without deletions, plus deletions
	// from original to modified. To find it, we compute deletions, which are the deletions from
	// original to modified, and delta, which is the difference from current to modified without
	// deletions, and then apply delta to deletions as a patch, which should be strictly additive.
	deltaMap, err := diffMaps(currentMap, modifiedMap, t, false, true)
	if err != nil {
		return nil, err
	}

	deletionsMap, err := diffMaps(originalMap, modifiedMap, t, true, false)
	if err != nil {
		return nil, err
	}

	patchMap, err := mergeMap(deletionsMap, deltaMap, t)
	if err != nil {
		return nil, err
	}

	// Apply the preconditions to the patch, and return an error if any of them fail.
	for _, fn := range fns {
		if !fn(patchMap) {
			return nil, newErrPreconditionFailed(patchMap)
		}
	}

	// TODO(jackgr): If force is false, and the patch contains any keys that are also in current,
	// then return a conflict error.

	return json.Marshal(patchMap)
}

// This function takes a JSON map and sorts all the lists that should be merged
// by key. This is needed by tests because in JSON, list order is significant,
// but in Strategic Merge Patch, merge lists do not have significant order.
// Sorting the lists allows for order-insensitive comparison of patched maps.
func sortMergeListsByName(mapJSON []byte, dataStruct interface{}) ([]byte, error) {
	var m map[string]interface{}
	err := json.Unmarshal(mapJSON, &m)
	if err != nil {
		return nil, err
	}

	newM, err := sortMergeListsByNameMap(m, reflect.TypeOf(dataStruct))
	if err != nil {
		return nil, err
	}

	return json.Marshal(newM)
}

// CreateThreeWayMergePatch reconciles a modified configuration with an original configuration,
// while preserving any changes or deletions made to the original configuration in the interim,
// and not overridden by the current configuration. All three documents must be passed to the
// method as json encoded content. It will return a strategic merge patch, or an error if any
// of the documents is invalid, or if there are any preconditions that fail against the modified
// configuration, or, if overwrite is false and there are conflicts between the modified and current
// configurations. Conflicts are defined as keys changed differently from original to modified
// than from original to current. In other words, a conflict occurs if modified changes any key
// in a way that is different from how it is changed in current (e.g., deleting it, changing its
// value).
func CreateThreeWayMergePatch(original, modified, current []byte, dataStruct interface{}, overwrite bool, smPatchVersion StrategicMergePatchVersion, fns ...PreconditionFunc) ([]byte, error) {
	originalMap := map[string]interface{}{}
	if len(original) > 0 {
		if err := json.Unmarshal(original, &originalMap); err != nil {
			return nil, errBadJSONDoc
		}
	}

	modifiedMap := map[string]interface{}{}
	if len(modified) > 0 {
		if err := json.Unmarshal(modified, &modifiedMap); err != nil {
			return nil, errBadJSONDoc
		}
	}

	currentMap := map[string]interface{}{}
	if len(current) > 0 {
		if err := json.Unmarshal(current, &currentMap); err != nil {
			return nil, errBadJSONDoc
		}
	}

	t, err := getTagStructType(dataStruct)
	if err != nil {
		return nil, err
	}

	// The patch is the difference from current to modified without deletions, plus deletions
	// from original to modified. To find it, we compute deletions, which are the deletions from
	// original to modified, and delta, which is the difference from current to modified without
	// deletions, and then apply delta to deletions as a patch, which should be strictly additive.
	deltaMap, err := diffMaps(currentMap, modifiedMap, t, false, true, smPatchVersion)
	if err != nil {
		return nil, err
	}

	deletionsMap, err := diffMaps(originalMap, modifiedMap, t, true, false, smPatchVersion)
	if err != nil {
		return nil, err
	}

	patchMap, err := mergeMap(deletionsMap, deltaMap, t)
	if err != nil {
		return nil, err
	}

	// Apply the preconditions to the patch, and return an error if any of them fail.
	for _, fn := range fns {
		if !fn(patchMap) {
			return nil, newErrPreconditionFailed(patchMap)
		}
	}

	// If overwrite is false, and the patch contains any keys that were changed differently,
	// then return a conflict error.
	if !overwrite {
		changedMap, err := diffMaps(originalMap, currentMap, t, false, false, smPatchVersion)
		if err != nil {
			return nil, err
		}

		hasConflicts, err := MergingMapsHaveConflicts(patchMap, changedMap, dataStruct)
		if err != nil {
			return nil, err
		}

		if hasConflicts {
			return nil, newErrConflict(toYAMLOrError(patchMap), toYAMLOrError(changedMap))
		}
	}

	return json.Marshal(patchMap)
}