func runvRequest(root, name string, code uint32, msg interface{}) (net.Conn, error) {
conn, err := utils.UnixSocketConnect(filepath.Join(root, name, "runv.sock"))
if err != nil {
return nil, err
}
cmd, err := json.Marshal(msg)
if err != nil {
conn.Close()
return nil, err
}
m := &hypervisor.DecodedMessage{
Code: code,
Message: cmd,
}
data := hypervisor.NewVmMessage(m)
w, err := conn.Write(data[:])
if w != len(data) {
err = fmt.Errorf("Not full write") // TODO
}
if err != nil {
conn.Close()
return nil, err
}
return conn, nil
}
func runvAllocAndRespondTag(conn net.Conn) (tag string, err error) {
tag = pod.RandStr(8, "alphanum")
m := &hypervisor.DecodedMessage{
Code: RUNV_ACK,
Message: []byte(tag),
}
data := hypervisor.NewVmMessage(m)
conn.Write(data)
return tag, nil
}
func HandleRunvRequest(context *nsContext, info *hypervisor.ContainerInfo, conn net.Conn) {
defer context.wg.Done()
defer conn.Close()
msg, err := hypervisor.ReadVmMessage(conn.(*net.UnixConn))
if err != nil {
fmt.Printf("read runv client data failed: %v\n", err)
return
}
switch msg.Code {
case RUNV_INITCONTAINER:
{
initCmd := &initContainerCmd{}
err = json.Unmarshal(msg.Message, initCmd)
if err != nil {
fmt.Printf("parse runv init container command failed: %v\n", err)
return
}
startVContainer(context, initCmd.Root, initCmd.Name)
}
case RUNV_EXECCMD:
{
tag, _ := runvAllocAndRespondTag(conn)
fmt.Printf("client exec cmd request %s\n", msg.Message[:])
tty := &hypervisor.TtyIO{
ClientTag: tag,
Stdin: conn,
Stdout: conn,
Callback: make(chan *types.VmResponse, 1),
}
context.Lock()
context.ttyList[tag] = tty
context.Unlock()
err = context.vm.Exec(tty, info.Id, string(msg.Message[:]))
if err != nil {
fmt.Printf("read runv client data failed: %v\n", err)
}
}
case RUNV_EXITSTATUS:
{
var code uint8 = 255
tagCmd := &ttyTagCmd{}
err = json.Unmarshal(msg.Message, &tagCmd)
if err != nil {
fmt.Printf("parse exit status failed: %v\n", err)
return
}
fmt.Printf("client get exit status: tag %v\n", tagCmd)
context.Lock()
if tty, ok := context.ttyList[tagCmd.Tag]; ok {
code = uint8(tty.ExitCode)
delete(context.ttyList, tagCmd.Tag)
}
context.Unlock()
m := &hypervisor.DecodedMessage{
Code: RUNV_EXITSTATUS,
Message: []byte{code},
}
data := hypervisor.NewVmMessage(m)
conn.Write(data)
/* Get exit code of Container, it's time to let container go */
if tagCmd.Container != "" {
cleanupVSocket(context, tagCmd.Root, tagCmd.Container)
}
}
case RUNV_WINSIZE:
{
var winSize ttyWinSize
json.Unmarshal(msg.Message, &winSize)
//fmt.Printf("client exec winsize request %v\n", winSize)
context.vm.Tty(winSize.Tag, winSize.Height, winSize.Width)
}
case RUNV_KILLCONTAINER:
{
killCmd := &killContainerCmd{}
err = json.Unmarshal(msg.Message, killCmd)
if err != nil {
fmt.Printf("parse runv kill container command failed: %v\n", err)
return
}
context.vm.KillContainer(info.Id, killCmd.Signal)
}
default:
fmt.Printf("unknown cient request\n")
}
}
