Paul Bellamy
92444a75eb
There was a race condition with containers running and exiting before `weave attach` was finished, which would cause an error.
38 lines
570 B
Go
38 lines
570 B
Go
package main
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import (
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"errors"
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"fmt"
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"os"
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"os/exec"
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"os/signal"
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"syscall"
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"time"
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)
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func main() {
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usr2 := make(chan os.Signal)
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signal.Notify(usr2, syscall.SIGUSR2)
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select {
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case <-usr2:
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case <-time.After(20 * time.Second):
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checkErr(errors.New("Container timed out waiting for signal from proxy"))
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}
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if len(os.Args) <= 1 {
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os.Exit(0)
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}
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binary, err := exec.LookPath(os.Args[1])
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checkErr(err)
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checkErr(syscall.Exec(binary, os.Args[1:], os.Environ()))
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}
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func checkErr(err error) {
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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}
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