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Merge pull request #107986 from wzshiming/promote/shutdown-based-on-p…
…od-priority Promote graceful shutdown based on pod priority to beta
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| /* | ||
| Copyright 2022 The Kubernetes Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package nodeshutdown | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "io" | ||
| "io/ioutil" | ||
| "os" | ||
| "path/filepath" | ||
| "time" | ||
| ) | ||
|
|
||
| type storage interface { | ||
| Store(data interface{}) (err error) | ||
| Load(data interface{}) (err error) | ||
| } | ||
|
|
||
| type localStorage struct { | ||
| Path string | ||
| } | ||
|
|
||
| func (l localStorage) Store(data interface{}) (err error) { | ||
| b, err := json.Marshal(data) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return atomicWrite(l.Path, b, 0644) | ||
| } | ||
|
|
||
| func (l localStorage) Load(data interface{}) (err error) { | ||
| b, err := os.ReadFile(l.Path) | ||
| if err != nil { | ||
| if os.IsNotExist(err) { | ||
| return nil | ||
| } | ||
| return err | ||
| } | ||
| return json.Unmarshal(b, data) | ||
| } | ||
|
|
||
| func timestamp(t time.Time) float64 { | ||
| if t.IsZero() { | ||
| return 0 | ||
| } | ||
| return float64(t.Unix()) | ||
| } | ||
|
|
||
| type state struct { | ||
| StartTime time.Time `json:"startTime"` | ||
| EndTime time.Time `json:"endTime"` | ||
| } | ||
|
|
||
| // atomicWrite atomically writes data to a file specified by filename. | ||
| func atomicWrite(filename string, data []byte, perm os.FileMode) error { | ||
| f, err := ioutil.TempFile(filepath.Dir(filename), ".tmp-"+filepath.Base(filename)) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| err = os.Chmod(f.Name(), perm) | ||
| if err != nil { | ||
| f.Close() | ||
| return err | ||
| } | ||
| n, err := f.Write(data) | ||
| if err != nil { | ||
| f.Close() | ||
| return err | ||
| } | ||
| if n < len(data) { | ||
| f.Close() | ||
| return io.ErrShortWrite | ||
| } | ||
| if err := f.Sync(); err != nil { | ||
| f.Close() | ||
| return err | ||
| } | ||
| if err := f.Close(); err != nil { | ||
| return err | ||
| } | ||
| return os.Rename(f.Name(), filename) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| /* | ||
| Copyright 2022 The Kubernetes Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package nodeshutdown | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "os" | ||
| "path/filepath" | ||
| "testing" | ||
| "time" | ||
| ) | ||
|
|
||
| func TestLocalStorage(t *testing.T) { | ||
| var localStorageStateFileName = "graceful_node_shutdown_state" | ||
| tempdir := os.TempDir() | ||
| path := filepath.Join(tempdir, localStorageStateFileName) | ||
| l := localStorage{ | ||
| Path: path, | ||
| } | ||
| now := time.Now() | ||
| want := state{ | ||
| StartTime: now, | ||
| EndTime: now, | ||
| } | ||
| err := l.Store(want) | ||
| if err != nil { | ||
| t.Error(err) | ||
| return | ||
| } | ||
|
|
||
| got := state{} | ||
| err = l.Load(&got) | ||
| if err != nil { | ||
| t.Error(err) | ||
| return | ||
| } | ||
|
|
||
| if !want.StartTime.Equal(got.StartTime) || !want.EndTime.Equal(got.EndTime) { | ||
| t.Errorf("got %+v, want %+v", got, want) | ||
| return | ||
| } | ||
|
|
||
| raw, err := os.ReadFile(path) | ||
| if err != nil { | ||
| t.Error(err) | ||
| return | ||
| } | ||
| nowStr := now.Format(time.RFC3339Nano) | ||
| wantRaw := fmt.Sprintf(`{"startTime":"` + nowStr + `","endTime":"` + nowStr + `"}`) | ||
| if string(raw) != wantRaw { | ||
| t.Errorf("got %s, want %s", string(raw), wantRaw) | ||
| return | ||
| } | ||
|
|
||
| } |
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