Created
December 31, 2017 02:04
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do with timeout in go
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package main | |
import ( | |
"errors" | |
"fmt" | |
"time" | |
) | |
var timeoutErr = errors.New("timeout") | |
func main() { | |
ret, err, f := genFunc() | |
if err := DoTimeout(f, 2*time.Second); err == timeoutErr { | |
fmt.Println("timeout") | |
return | |
} | |
fmt.Println("result", *ret, err) | |
} | |
// TODO change to time wheel | |
func DoTimeout(f func(), timeout time.Duration) error { | |
timer := time.NewTimer(timeout) | |
finish := make(chan struct{}) | |
go func() { | |
f() | |
close(finish) | |
}() | |
select { | |
case <-finish: | |
timer.Stop() | |
return nil | |
case <-timer.C: | |
return timeoutErr | |
} | |
} | |
func query(t time.Duration) (int, error) { | |
time.Sleep(t) | |
return 11, errors.New("xx") | |
} | |
func genFunc() (*int, error, func()) { | |
var ret int | |
var err error | |
f := func() { | |
ret, err = query(time.Second) | |
} | |
return &ret, err, f | |
} |
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