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closers.go
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/
closers.go
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package catalog
import (
"io"
"time"
"github.com/zeebo/errs"
"google.golang.org/grpc"
)
type closerGroup []io.Closer
func (cs closerGroup) Close() error {
// Close in reverse order.
var errs errs.Group
for i := len(cs) - 1; i >= 0; i-- {
errs.Add(cs[i].Close())
}
return errs.Err()
}
type closerFunc func()
func closerFuncs(fns ...func()) closerGroup {
var closers closerGroup
for _, fn := range fns {
closers = append(closers, closerFunc(fn))
}
return closers
}
func (fn closerFunc) Close() error {
fn()
return nil
}
func gracefulStopWithTimeout(s *grpc.Server) bool {
done := make(chan struct{})
go func() {
s.GracefulStop()
close(done)
}()
t := time.NewTimer(time.Minute)
defer t.Stop()
select {
case <-done:
return true
case <-t.C:
s.Stop()
return false
}
}