Files
client-go/util/workqueue/metrics_test.go
Daniel Smith 75d4dad922 add a metric that can be used to notice stuck worker threads
Kubernetes-commit: 6195d1005d81eaa5dd49da744f5beab178340f5a
2018-11-09 10:43:44 -08:00

50 lines
1.2 KiB
Go

/*
Copyright 2018 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 workqueue
import (
"testing"
"time"
)
type testMetrics struct {
added, gotten, finished int64
updateCalled chan<- struct{}
}
func (m *testMetrics) add(item t) { m.added++ }
func (m *testMetrics) get(item t) { m.gotten++ }
func (m *testMetrics) done(item t) { m.finished++ }
func (m *testMetrics) updateUnfinishedWork() { m.updateCalled <- struct{}{} }
func TestMetrics(t *testing.T) {
ch := make(chan struct{})
m := &testMetrics{
updateCalled: ch,
}
q := newQueue("test", m, time.Millisecond)
<-ch
q.ShutDown()
select {
case <-time.After(time.Second):
return
case <-ch:
t.Errorf("Unexpected update after shutdown was called.")
}
}