containerd/dialer.go
Michael Crosby 51b9240b80 Update client to pass go lint
There is one breaking change with the function naming of UidGid to
UIDGID

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
2017-09-25 13:11:42 -04:00

54 lines
923 B
Go

package containerd
import (
"net"
"strings"
"time"
"github.com/pkg/errors"
)
type dialResult struct {
c net.Conn
err error
}
// Dialer returns a GRPC net.Conn connected to the provided address
func Dialer(address string, timeout time.Duration) (net.Conn, error) {
var (
stopC = make(chan struct{})
synC = make(chan *dialResult)
)
address = strings.TrimPrefix(address, "unix://")
go func() {
defer close(synC)
for {
select {
case <-stopC:
return
default:
c, err := dialer(address, timeout)
if isNoent(err) {
<-time.After(10 * time.Millisecond)
continue
}
synC <- &dialResult{c, err}
return
}
}
}()
select {
case dr := <-synC:
return dr.c, dr.err
case <-time.After(timeout):
close(stopC)
go func() {
dr := <-synC
if dr != nil {
dr.c.Close()
}
}()
return nil, errors.Errorf("dial %s: no such file or directory", address)
}
}