| /* |
| Copyright 2014 The Kubernetes Authors. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| package json |
| |
| import ( |
| "encoding/json" |
| "fmt" |
| "reflect" |
| |
| "k8s.io/apimachinery/pkg/runtime" |
| "k8s.io/apimachinery/pkg/watch" |
| ) |
| |
| // WatchEvent objects are streamed from the api server in response to a watch request. |
| // These are not API objects and may not be changed in a backward-incompatible way. |
| // TODO: move to a public, versioned object now that RawExtension conversions are possible |
| // in the schema. |
| type WatchEvent struct { |
| // The type of the watch event; added, modified, deleted, or error. |
| // +optional |
| Type watch.EventType `json:"type,omitempty" description:"the type of watch event; may be ADDED, MODIFIED, DELETED, or ERROR"` |
| |
| // For added or modified objects, this is the new object; for deleted objects, |
| // it's the state of the object immediately prior to its deletion. |
| // For errors, it's an api.Status. |
| // +optional |
| Object runtime.RawExtension `json:"object,omitempty" description:"the object being watched; will match the type of the resource endpoint or be a Status object if the type is ERROR"` |
| } |
| |
| // Object converts a watch.Event into an appropriately serializable JSON object |
| func Object(encoder runtime.Encoder, event *watch.Event) (interface{}, error) { |
| obj, ok := event.Object.(runtime.Object) |
| if !ok { |
| return nil, fmt.Errorf("the event object cannot be safely converted to JSON: %v", reflect.TypeOf(event.Object).Name()) |
| } |
| data, err := runtime.Encode(encoder, obj) |
| if err != nil { |
| return nil, err |
| } |
| return &WatchEvent{event.Type, runtime.RawExtension{Raw: json.RawMessage(data)}}, nil |
| } |