watch.go

Documentation: k8s.io/apimachinery/pkg/apis/meta/v1

     1  /*
     2  Copyright 2015 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package v1
    18  
    19  import (
    20  	"k8s.io/apimachinery/pkg/conversion"
    21  	"k8s.io/apimachinery/pkg/runtime"
    22  	"k8s.io/apimachinery/pkg/runtime/schema"
    23  	"k8s.io/apimachinery/pkg/watch"
    24  )
    25  
    26  // Event represents a single event to a watched resource.
    27  //
    28  // +protobuf=true
    29  // +k8s:deepcopy-gen=true
    30  // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
    31  type WatchEvent struct {
    32  	Type string `json:"type" protobuf:"bytes,1,opt,name=type"`
    33  
    34  	// Object is:
    35  	//  * If Type is Added or Modified: the new state of the object.
    36  	//  * If Type is Deleted: the state of the object immediately before deletion.
    37  	//  * If Type is Error: *Status is recommended; other types may make sense
    38  	//    depending on context.
    39  	Object runtime.RawExtension `json:"object" protobuf:"bytes,2,opt,name=object"`
    40  }
    41  
    42  func Convert_watch_Event_To_v1_WatchEvent(in *watch.Event, out *WatchEvent, s conversion.Scope) error {
    43  	out.Type = string(in.Type)
    44  	switch t := in.Object.(type) {
    45  	case *runtime.Unknown:
    46  		// TODO: handle other fields on Unknown and detect type
    47  		out.Object.Raw = t.Raw
    48  	case nil:
    49  	default:
    50  		out.Object.Object = in.Object
    51  	}
    52  	return nil
    53  }
    54  
    55  func Convert_v1_InternalEvent_To_v1_WatchEvent(in *InternalEvent, out *WatchEvent, s conversion.Scope) error {
    56  	return Convert_watch_Event_To_v1_WatchEvent((*watch.Event)(in), out, s)
    57  }
    58  
    59  func Convert_v1_WatchEvent_To_watch_Event(in *WatchEvent, out *watch.Event, s conversion.Scope) error {
    60  	out.Type = watch.EventType(in.Type)
    61  	if in.Object.Object != nil {
    62  		out.Object = in.Object.Object
    63  	} else if in.Object.Raw != nil {
    64  		// TODO: handle other fields on Unknown and detect type
    65  		out.Object = &runtime.Unknown{
    66  			Raw:         in.Object.Raw,
    67  			ContentType: runtime.ContentTypeJSON,
    68  		}
    69  	}
    70  	return nil
    71  }
    72  
    73  func Convert_v1_WatchEvent_To_v1_InternalEvent(in *WatchEvent, out *InternalEvent, s conversion.Scope) error {
    74  	return Convert_v1_WatchEvent_To_watch_Event(in, (*watch.Event)(out), s)
    75  }
    76  
    77  // InternalEvent makes watch.Event versioned
    78  // +protobuf=false
    79  type InternalEvent watch.Event
    80  
    81  func (e *InternalEvent) GetObjectKind() schema.ObjectKind { return schema.EmptyObjectKind }
    82  func (e *WatchEvent) GetObjectKind() schema.ObjectKind    { return schema.EmptyObjectKind }
    83  func (e *InternalEvent) DeepCopyObject() runtime.Object {
    84  	if c := e.DeepCopy(); c != nil {
    85  		return c
    86  	} else {
    87  		return nil
    88  	}
    89  }
    90
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