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beam/examples/beamsh: more useful debugging

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Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
This commit is contained in:
Solomon Hykes 2014-03-26 15:46:02 -07:00
parent ca0aacdb6b
commit 0f36b222f3
1 changed files with 12 additions and 6 deletions
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18
beam/examples/beamsh/beamsh.go
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@ -56,23 +56,25 @@ func main() {
}
}
func beamCopy(dst *net.UnixConn, src *net.UnixConn) error {
func beamCopy(dst *net.UnixConn, src *net.UnixConn) (int, error) {
var n int
for {
payload, attachment, err := beam.Receive(src)
if err == io.EOF {
return nil
return n, nil
} else if err != nil {
return err
return n, err
}
if err := beam.Send(dst, payload, attachment); err != nil {
if attachment != nil {
attachment.Close()
}
return err
return n, err
}
n++
}
panic("impossibru!")
return nil
return n, nil
}
type Handler func([]string, *net.UnixConn, *net.UnixConn)
@ -165,7 +167,11 @@ func executeCommand(client *net.UnixConn, cmd *dockerscript.Command) error {
}()
go func() {
Debugf("[%s] copy start...\n", strings.Join(cmd.Args, " "))
beamCopy(client, outPub)
n, err := beamCopy(client, outPub)
if err != nil {
Fatal(err)
}
Debugf("[%s] copied %d messages\n", strings.Join(cmd.Args, " "), n)
Debugf("[%s] copy done\n", strings.Join(cmd.Args, " "))
tasks.Done()
}()