mirror of https://github.com/kubernetes/kops.git
160 lines
4.2 KiB
Go
160 lines
4.2 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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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 hosts
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"strings"
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"testing"
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"k8s.io/kops/pkg/diff"
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)
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func TestRemovesDuplicateGuardedBlocks(t *testing.T) {
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in := `
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foo 10.2.3.4
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# Begin host entries managed by etcd-manager[etcd] - do not edit
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# End host entries managed by etcd-manager[etcd]
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# Begin host entries managed by etcd-manager[etcd] - do not edit
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# End host entries managed by etcd-manager[etcd]
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# Begin host entries managed by kops - do not edit
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# End host entries managed by kops
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# Begin host entries managed by kops - do not edit
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# End host entries managed by kops
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# Begin host entries managed by kops - do not edit
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# End host entries managed by kops
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# Begin host entries managed by kops - do not edit
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# End host entries managed by kops
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# Begin host entries managed by kops - do not edit
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# End host entries managed by kops
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# Begin host entries managed by kops - do not edit
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# End host entries managed by kops
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# Begin host entries managed by kops - do not edit
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# End host entries managed by kops
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# Begin host entries managed by kops - do not edit
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# End host entries managed by kops
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`
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expected := `
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foo 10.2.3.4
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# Begin host entries managed by etcd-manager[etcd] - do not edit
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# End host entries managed by etcd-manager[etcd]
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# Begin host entries managed by etcd-manager[etcd] - do not edit
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# End host entries managed by etcd-manager[etcd]
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# Begin host entries managed by kops - do not edit
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a\t10.0.1.1 10.0.1.2
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b\t10.0.2.1
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c\t
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# End host entries managed by kops
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`
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runTest(t, in, expected)
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}
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func TestRecoversFromBadNesting(t *testing.T) {
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in := `
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foo 10.2.3.4
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# End host entries managed by kops
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# Begin host entries managed by kops - do not edit
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# Begin host entries managed by kops - do not edit
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# End host entries managed by kops
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# End host entries managed by kops
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# End host entries managed by kops
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# Begin host entries managed by kops - do not edit
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# End host entries managed by kops
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# Begin host entries managed by kops - do not edit
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# End host entries managed by kops
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# Begin host entries managed by kops - do not edit
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# End host entries managed by kops
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# Begin host entries managed by kops - do not edit
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# Begin host entries managed by kops - do not edit
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# Begin host entries managed by kops - do not edit
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# Begin host entries managed by kops - do not edit
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# End host entries managed by kops
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# Begin host entries managed by kops - do not edit
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# End host entries managed by kops
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bar 10.1.2.3
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`
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expected := `
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foo 10.2.3.4
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bar 10.1.2.3
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# Begin host entries managed by kops - do not edit
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a\t10.0.1.1 10.0.1.2
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b\t10.0.2.1
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c\t
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# End host entries managed by kops
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`
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runTest(t, in, expected)
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}
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func runTest(t *testing.T, in string, expected string) {
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expected = strings.Replace(expected, "\\t", "\t", -1)
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dir, err := ioutil.TempDir("", "")
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if err != nil {
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t.Fatalf("error creating temp dir: %v", err)
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}
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defer func() {
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err := os.RemoveAll(dir)
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if err != nil {
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t.Errorf("failed to remove temp dir %q: %v", dir, err)
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}
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}()
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p := filepath.Join(dir, "hosts")
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addrToHosts := map[string][]string{
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"a": {"10.0.1.2", "10.0.1.1"},
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"b": {"10.0.2.1"},
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"c": {},
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}
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if err := ioutil.WriteFile(p, []byte(in), 0755); err != nil {
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t.Fatalf("error writing hosts file: %v", err)
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}
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// We run it repeatedly to make sure we don't change it accidentally
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for i := 0; i < 100; i++ {
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if err := UpdateHostsFileWithRecords(p, addrToHosts); err != nil {
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t.Fatalf("error updating hosts file: %v", err)
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}
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b, err := ioutil.ReadFile(p)
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if err != nil {
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t.Fatalf("error reading output file: %v", err)
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}
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actual := string(b)
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if actual != expected {
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diffString := diff.FormatDiff(expected, actual)
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t.Logf("diff:\n%s\n", diffString)
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t.Errorf("unexpected output. expected=%q, actual=%q", expected, actual)
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}
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}
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}
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