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package main
import (
"context"
"encoding/json"
"os"
"os/exec"
"syscall"
"hakurei.app/hst"
"hakurei.app/message"
)
// run starts a container via cmd/hakurei and returns after it terminates.
func run(
ctx context.Context,
msg message.Msg,
config *hst.Config,
args ...string,
) error {
c, cancel := context.WithCancel(ctx)
defer cancel()
cmd := exec.CommandContext(c, "hakurei")
cmd.Stdin, cmd.Stdout, cmd.Stderr = os.Stdin, os.Stdout, os.Stderr
cmd.Cancel = func() error {
return cmd.Process.Signal(syscall.SIGINT)
}
if msg.IsVerbose() {
cmd.Args = append(cmd.Args, "-v")
}
cmd.Args = append(cmd.Args, "run", "3")
cmd.Args = append(cmd.Args, args...)
r, w, err := os.Pipe()
if err != nil {
return err
}
cmd.ExtraFiles = append(cmd.ExtraFiles, r)
if err = cmd.Start(); err != nil {
_, _ = r.Close(), w.Close()
return err
}
if err = r.Close(); err != nil {
_ = w.Close()
return err
} else if err = json.NewEncoder(w).Encode(&config); err != nil {
_ = w.Close()
return err
} else if err = w.Close(); err != nil {
return err
}
return cmd.Wait()
}
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