Matthias Andreas Benkard | 832a54e | 2019-01-29 09:27:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | Copyright 2014 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 rest |
| 18 | |
| 19 | import ( |
| 20 | "context" |
| 21 | "fmt" |
| 22 | "net/http" |
| 23 | "time" |
| 24 | |
| 25 | "k8s.io/apimachinery/pkg/api/meta" |
| 26 | metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| 27 | metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1" |
| 28 | "k8s.io/apimachinery/pkg/runtime" |
| 29 | "k8s.io/apimachinery/pkg/runtime/schema" |
| 30 | ) |
| 31 | |
| 32 | type defaultTableConvertor struct { |
| 33 | qualifiedResource schema.GroupResource |
| 34 | } |
| 35 | |
| 36 | // NewDefaultTableConvertor creates a default convertor for the provided resource. |
| 37 | func NewDefaultTableConvertor(resource schema.GroupResource) TableConvertor { |
| 38 | return defaultTableConvertor{qualifiedResource: resource} |
| 39 | } |
| 40 | |
| 41 | var swaggerMetadataDescriptions = metav1.ObjectMeta{}.SwaggerDoc() |
| 42 | |
| 43 | func (c defaultTableConvertor) ConvertToTable(ctx context.Context, object runtime.Object, tableOptions runtime.Object) (*metav1beta1.Table, error) { |
| 44 | var table metav1beta1.Table |
| 45 | fn := func(obj runtime.Object) error { |
| 46 | m, err := meta.Accessor(obj) |
| 47 | if err != nil { |
| 48 | return errNotAcceptable{resource: c.qualifiedResource} |
| 49 | } |
| 50 | table.Rows = append(table.Rows, metav1beta1.TableRow{ |
| 51 | Cells: []interface{}{m.GetName(), m.GetCreationTimestamp().Time.UTC().Format(time.RFC3339)}, |
| 52 | Object: runtime.RawExtension{Object: obj}, |
| 53 | }) |
| 54 | return nil |
| 55 | } |
| 56 | switch { |
| 57 | case meta.IsListType(object): |
| 58 | if err := meta.EachListItem(object, fn); err != nil { |
| 59 | return nil, err |
| 60 | } |
| 61 | default: |
| 62 | if err := fn(object); err != nil { |
| 63 | return nil, err |
| 64 | } |
| 65 | } |
| 66 | if m, err := meta.ListAccessor(object); err == nil { |
| 67 | table.ResourceVersion = m.GetResourceVersion() |
| 68 | table.SelfLink = m.GetSelfLink() |
| 69 | table.Continue = m.GetContinue() |
| 70 | } else { |
| 71 | if m, err := meta.CommonAccessor(object); err == nil { |
| 72 | table.ResourceVersion = m.GetResourceVersion() |
| 73 | table.SelfLink = m.GetSelfLink() |
| 74 | } |
| 75 | } |
| 76 | table.ColumnDefinitions = []metav1beta1.TableColumnDefinition{ |
| 77 | {Name: "Name", Type: "string", Format: "name", Description: swaggerMetadataDescriptions["name"]}, |
| 78 | {Name: "Created At", Type: "date", Description: swaggerMetadataDescriptions["creationTimestamp"]}, |
| 79 | } |
| 80 | return &table, nil |
| 81 | } |
| 82 | |
| 83 | // errNotAcceptable indicates the resource doesn't support Table conversion |
| 84 | type errNotAcceptable struct { |
| 85 | resource schema.GroupResource |
| 86 | } |
| 87 | |
| 88 | func (e errNotAcceptable) Error() string { |
| 89 | return fmt.Sprintf("the resource %s does not support being converted to a Table", e.resource) |
| 90 | } |
| 91 | |
| 92 | func (e errNotAcceptable) Status() metav1.Status { |
| 93 | return metav1.Status{ |
| 94 | Status: metav1.StatusFailure, |
| 95 | Code: http.StatusNotAcceptable, |
| 96 | Reason: metav1.StatusReason("NotAcceptable"), |
| 97 | Message: e.Error(), |
| 98 | } |
| 99 | } |