Zack Williams | e940c7a | 2019-08-21 14:25:39 -0700 | [diff] [blame] | 1 | /* |
| 2 | Copyright 2016 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 | "fmt" |
| 21 | |
| 22 | "k8s.io/api/core/v1" |
| 23 | metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| 24 | "k8s.io/apimachinery/pkg/fields" |
| 25 | "k8s.io/apimachinery/pkg/runtime" |
| 26 | "k8s.io/apimachinery/pkg/types" |
| 27 | ref "k8s.io/client-go/tools/reference" |
| 28 | ) |
| 29 | |
| 30 | // The EventExpansion interface allows manually adding extra methods to the EventInterface. |
| 31 | type EventExpansion interface { |
| 32 | // CreateWithEventNamespace is the same as a Create, except that it sends the request to the event.Namespace. |
| 33 | CreateWithEventNamespace(event *v1.Event) (*v1.Event, error) |
| 34 | // UpdateWithEventNamespace is the same as a Update, except that it sends the request to the event.Namespace. |
| 35 | UpdateWithEventNamespace(event *v1.Event) (*v1.Event, error) |
| 36 | PatchWithEventNamespace(event *v1.Event, data []byte) (*v1.Event, error) |
| 37 | // Search finds events about the specified object |
| 38 | Search(scheme *runtime.Scheme, objOrRef runtime.Object) (*v1.EventList, error) |
| 39 | // Returns the appropriate field selector based on the API version being used to communicate with the server. |
| 40 | // The returned field selector can be used with List and Watch to filter desired events. |
| 41 | GetFieldSelector(involvedObjectName, involvedObjectNamespace, involvedObjectKind, involvedObjectUID *string) fields.Selector |
| 42 | } |
| 43 | |
| 44 | // CreateWithEventNamespace makes a new event. Returns the copy of the event the server returns, |
| 45 | // or an error. The namespace to create the event within is deduced from the |
| 46 | // event; it must either match this event client's namespace, or this event |
| 47 | // client must have been created with the "" namespace. |
| 48 | func (e *events) CreateWithEventNamespace(event *v1.Event) (*v1.Event, error) { |
| 49 | if e.ns != "" && event.Namespace != e.ns { |
| 50 | return nil, fmt.Errorf("can't create an event with namespace '%v' in namespace '%v'", event.Namespace, e.ns) |
| 51 | } |
| 52 | result := &v1.Event{} |
| 53 | err := e.client.Post(). |
| 54 | NamespaceIfScoped(event.Namespace, len(event.Namespace) > 0). |
| 55 | Resource("events"). |
| 56 | Body(event). |
| 57 | Do(). |
| 58 | Into(result) |
| 59 | return result, err |
| 60 | } |
| 61 | |
| 62 | // UpdateWithEventNamespace modifies an existing event. It returns the copy of the event that the server returns, |
| 63 | // or an error. The namespace and key to update the event within is deduced from the event. The |
| 64 | // namespace must either match this event client's namespace, or this event client must have been |
| 65 | // created with the "" namespace. Update also requires the ResourceVersion to be set in the event |
| 66 | // object. |
| 67 | func (e *events) UpdateWithEventNamespace(event *v1.Event) (*v1.Event, error) { |
| 68 | result := &v1.Event{} |
| 69 | err := e.client.Put(). |
| 70 | NamespaceIfScoped(event.Namespace, len(event.Namespace) > 0). |
| 71 | Resource("events"). |
| 72 | Name(event.Name). |
| 73 | Body(event). |
| 74 | Do(). |
| 75 | Into(result) |
| 76 | return result, err |
| 77 | } |
| 78 | |
| 79 | // PatchWithEventNamespace modifies an existing event. It returns the copy of |
| 80 | // the event that the server returns, or an error. The namespace and name of the |
| 81 | // target event is deduced from the incompleteEvent. The namespace must either |
| 82 | // match this event client's namespace, or this event client must have been |
| 83 | // created with the "" namespace. |
| 84 | func (e *events) PatchWithEventNamespace(incompleteEvent *v1.Event, data []byte) (*v1.Event, error) { |
| 85 | if e.ns != "" && incompleteEvent.Namespace != e.ns { |
| 86 | return nil, fmt.Errorf("can't patch an event with namespace '%v' in namespace '%v'", incompleteEvent.Namespace, e.ns) |
| 87 | } |
| 88 | result := &v1.Event{} |
| 89 | err := e.client.Patch(types.StrategicMergePatchType). |
| 90 | NamespaceIfScoped(incompleteEvent.Namespace, len(incompleteEvent.Namespace) > 0). |
| 91 | Resource("events"). |
| 92 | Name(incompleteEvent.Name). |
| 93 | Body(data). |
| 94 | Do(). |
| 95 | Into(result) |
| 96 | return result, err |
| 97 | } |
| 98 | |
| 99 | // Search finds events about the specified object. The namespace of the |
| 100 | // object must match this event's client namespace unless the event client |
| 101 | // was made with the "" namespace. |
| 102 | func (e *events) Search(scheme *runtime.Scheme, objOrRef runtime.Object) (*v1.EventList, error) { |
| 103 | ref, err := ref.GetReference(scheme, objOrRef) |
| 104 | if err != nil { |
| 105 | return nil, err |
| 106 | } |
| 107 | if e.ns != "" && ref.Namespace != e.ns { |
| 108 | return nil, fmt.Errorf("won't be able to find any events of namespace '%v' in namespace '%v'", ref.Namespace, e.ns) |
| 109 | } |
| 110 | stringRefKind := string(ref.Kind) |
| 111 | var refKind *string |
| 112 | if stringRefKind != "" { |
| 113 | refKind = &stringRefKind |
| 114 | } |
| 115 | stringRefUID := string(ref.UID) |
| 116 | var refUID *string |
| 117 | if stringRefUID != "" { |
| 118 | refUID = &stringRefUID |
| 119 | } |
| 120 | fieldSelector := e.GetFieldSelector(&ref.Name, &ref.Namespace, refKind, refUID) |
| 121 | return e.List(metav1.ListOptions{FieldSelector: fieldSelector.String()}) |
| 122 | } |
| 123 | |
| 124 | // Returns the appropriate field selector based on the API version being used to communicate with the server. |
| 125 | // The returned field selector can be used with List and Watch to filter desired events. |
| 126 | func (e *events) GetFieldSelector(involvedObjectName, involvedObjectNamespace, involvedObjectKind, involvedObjectUID *string) fields.Selector { |
| 127 | apiVersion := e.client.APIVersion().String() |
| 128 | field := fields.Set{} |
| 129 | if involvedObjectName != nil { |
| 130 | field[GetInvolvedObjectNameFieldLabel(apiVersion)] = *involvedObjectName |
| 131 | } |
| 132 | if involvedObjectNamespace != nil { |
| 133 | field["involvedObject.namespace"] = *involvedObjectNamespace |
| 134 | } |
| 135 | if involvedObjectKind != nil { |
| 136 | field["involvedObject.kind"] = *involvedObjectKind |
| 137 | } |
| 138 | if involvedObjectUID != nil { |
| 139 | field["involvedObject.uid"] = *involvedObjectUID |
| 140 | } |
| 141 | return field.AsSelector() |
| 142 | } |
| 143 | |
| 144 | // Returns the appropriate field label to use for name of the involved object as per the given API version. |
| 145 | func GetInvolvedObjectNameFieldLabel(version string) string { |
| 146 | return "involvedObject.name" |
| 147 | } |
| 148 | |
| 149 | // TODO: This is a temporary arrangement and will be removed once all clients are moved to use the clientset. |
| 150 | type EventSinkImpl struct { |
| 151 | Interface EventInterface |
| 152 | } |
| 153 | |
| 154 | func (e *EventSinkImpl) Create(event *v1.Event) (*v1.Event, error) { |
| 155 | return e.Interface.CreateWithEventNamespace(event) |
| 156 | } |
| 157 | |
| 158 | func (e *EventSinkImpl) Update(event *v1.Event) (*v1.Event, error) { |
| 159 | return e.Interface.UpdateWithEventNamespace(event) |
| 160 | } |
| 161 | |
| 162 | func (e *EventSinkImpl) Patch(event *v1.Event, data []byte) (*v1.Event, error) { |
| 163 | return e.Interface.PatchWithEventNamespace(event, data) |
| 164 | } |