mirror of https://github.com/helm/helm
Merge pull request #1823 from adamreese/ref/kube-manifest
ref(kube): add Result to abstract a collection of resourcespull/1830/head
Adam Reese
8 years ago
committed by
GitHub
commit
5a33f462ef
@ -0,0 +1,87 @@
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/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kube // import "k8s.io/helm/pkg/kube"
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import "k8s.io/kubernetes/pkg/kubectl/resource"
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// Result provides convenience methods for comparing collections of Infos.
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type Result []*resource.Info
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// Append adds an Info to the Result.
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func (r *Result) Append(val *resource.Info) {
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*r = append(*r, val)
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}
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// Visit implements resource.Visitor.
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func (r Result) Visit(fn resource.VisitorFunc) error {
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for _, i := range r {
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if err := fn(i, nil); err != nil {
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return err
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}
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}
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return nil
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}
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// Filter returns a new Result with Infos that satisfy the predicate fn.
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func (r Result) Filter(fn func(*resource.Info) bool) Result {
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var result Result
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for _, i := range r {
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if fn(i) {
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result.Append(i)
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}
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}
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return result
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}
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// Get returns the Info from the result that matches the name and kind.
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func (r Result) Get(info *resource.Info) *resource.Info {
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for _, i := range r {
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if isMatchingInfo(i, info) {
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return i
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}
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}
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return nil
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}
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// Contains checks to see if an object exists.
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func (r Result) Contains(info *resource.Info) bool {
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for _, i := range r {
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if isMatchingInfo(i, info) {
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return true
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}
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}
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return false
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}
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// Difference will return a new Result with objects not contained in rs.
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func (r Result) Difference(rs Result) Result {
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return r.Filter(func(info *resource.Info) bool {
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return !rs.Contains(info)
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})
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}
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// Intersect will return a new Result with objects contained in both Results.
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func (r Result) Intersect(rs Result) Result {
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return r.Filter(func(info *resource.Info) bool {
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return rs.Contains(info)
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})
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}
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// isMatchingInfo returns true if infos match on Name and GroupVersionKind.
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func isMatchingInfo(a, b *resource.Info) bool {
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return a.Name == b.Name && a.Mapping.GroupVersionKind == b.Mapping.GroupVersionKind
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}
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@ -0,0 +1,58 @@
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/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kube // import "k8s.io/helm/pkg/kube"
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import (
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"testing"
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"k8s.io/kubernetes/pkg/api/testapi"
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"k8s.io/kubernetes/pkg/api/unversioned"
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"k8s.io/kubernetes/pkg/kubectl/resource"
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)
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func TestResult(t *testing.T) {
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mapping, err := testapi.Default.RESTMapper().RESTMapping(unversioned.GroupKind{Kind: "Pod"})
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if err != nil {
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t.Fatal(err)
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}
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info := func(name string) *resource.Info {
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return &resource.Info{Name: name, Mapping: mapping}
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}
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var r1, r2 Result
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r1 = []*resource.Info{info("foo"), info("bar")}
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r2 = []*resource.Info{info("bar")}
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diff := r1.Difference(r2)
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if len(diff) != 1 {
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t.Error("expected 1 result")
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}
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if !diff.Contains(info("foo")) {
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t.Error("expected diff to return foo")
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}
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inter := r1.Intersect(r2)
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if len(inter) != 1 {
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t.Error("expected 1 result")
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}
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if !inter.Contains(info("bar")) {
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t.Error("expected intersect to return bar")
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}
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}
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