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timeout_closer.go
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/
timeout_closer.go
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/*
Copyright 2023 The Vitess 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 ioutil
import (
"context"
"io"
"time"
)
// TimeoutCloser is an io.Closer that has a timeout for executing the Close() function.
type TimeoutCloser struct {
ctx context.Context
closer io.Closer
timeout time.Duration
}
func NewTimeoutCloser(ctx context.Context, closer io.Closer, timeout time.Duration) *TimeoutCloser {
return &TimeoutCloser{
ctx: ctx,
closer: closer,
timeout: timeout,
}
}
func (c *TimeoutCloser) Close() error {
done := make(chan error)
ctx, cancel := context.WithTimeout(c.ctx, c.timeout)
defer cancel()
go func() {
defer close(done)
select {
case done <- c.closer.Close():
case <-ctx.Done():
}
}()
select {
case err := <-done:
return err
case <-ctx.Done():
return ctx.Err()
}
}