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test.go
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test.go
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// Licensed to Apache Software Foundation (ASF) under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Apache Software Foundation (ASF) licenses this file to you 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 run
import (
"fmt"
"sync"
)
var _ Service = (*tester)(nil)
type tester struct {
startedNotifier chan struct{}
stopCh chan struct{}
ID string
once sync.Once
}
// NewTester return a tester module to stop the runtime programmatically.
func NewTester(id string) (Unit, func()) {
t := &tester{
ID: id,
startedNotifier: make(chan struct{}),
stopCh: make(chan struct{}),
once: sync.Once{},
}
return t, t.GracefulStop
}
func (t *tester) WaitUntilStarted() error {
select {
case err := <-t.stopCh:
return fmt.Errorf("stopped: %v", err)
case <-t.startedNotifier:
return nil
}
}
func (t *tester) Name() string {
return t.ID
}
func (t *tester) Serve() StopNotify {
close(t.startedNotifier)
return t.stopCh
}
func (t *tester) GracefulStop() {
t.once.Do(func() {
close(t.stopCh)
})
}