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69 lines
1.3 KiB
69 lines
1.3 KiB
package ozinit
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import (
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"github.com/subgraph/oz/ipc"
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"errors"
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"fmt"
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)
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func clientConnect(addr string) (*ipc.MsgConn, error) {
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return ipc.Connect(addr, messageFactory, nil)
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}
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func clientSend(addr string, msg interface{}) (*ipc.Message, error) {
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c,err := clientConnect(addr)
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if err != nil {
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return nil, err
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}
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defer c.Close()
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rr, err := c.ExchangeMsg(msg)
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if err != nil {
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return nil, err
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}
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resp := <- rr.Chan()
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rr.Done()
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return resp, nil
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}
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func Ping(addr string) error {
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resp,err := clientSend(addr, new(PingMsg))
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if err != nil {
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return err
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}
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switch body := resp.Body.(type) {
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case *PingMsg:
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return nil
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case *ErrorMsg:
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return errors.New(body.Msg)
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default:
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return fmt.Errorf("Unexpected message received: %+v", body)
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}
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}
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func RunShell(addr, term string) (int, error) {
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c,err := clientConnect(addr)
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if err != nil {
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return 0, err
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}
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rr,err := c.ExchangeMsg(&RunShellMsg{Term: term})
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resp := <- rr.Chan()
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rr.Done()
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c.Close()
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if err != nil {
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return 0, err
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}
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switch body := resp.Body.(type) {
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case *ErrorMsg:
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return 0,errors.New(body.Msg)
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case *OkMsg:
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if len(resp.Fds) == 0 {
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return 0, errors.New("RunShell message returned Ok, but no file descriptor received")
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}
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return resp.Fds[0], nil
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default:
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return 0, fmt.Errorf("Unexpected message type received: %+v", body)
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}
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}
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