func (daemon *Daemon) ContainerRestart(job *engine.Job) engine.Status {
if len(job.Args) != 1 {
return job.Errorf("Usage: %s CONTAINER\n", job.Name)
}
var (
name = job.Args[0]
t = 10
)
if job.EnvExists("t") {
t = job.GetenvInt("t")
}
if container := daemon.Get(name); container != nil {
if err := container.Restart(int(t)); err != nil {
return job.Errorf("Cannot restart container %s: %s\n", name, err)
}
container.LogEvent("restart")
} else {
return job.Errorf("No such container: %s\n", name)
}
return engine.StatusOK
}
func (daemon *Daemon) ContainerStop(job *engine.Job) engine.Status {
if len(job.Args) != 1 {
return job.Errorf("Usage: %s CONTAINER\n", job.Name)
}
var (
name = job.Args[0]
t = 10
)
if job.EnvExists("t") {
t = job.GetenvInt("t")
}
if container := daemon.Get(name); container != nil {
if !container.State.IsRunning() {
return job.Errorf("Container already stopped")
}
if err := container.Stop(int(t)); err != nil {
return job.Errorf("Cannot stop container %s: %s\n", name, err)
}
container.LogEvent("stop")
} else {
return job.Errorf("No such container: %s\n", name)
}
return engine.StatusOK
}
// Allocate an external port and map it to the interface
func AllocatePort(job *engine.Job) engine.Status {
var (
err error
ip = defaultBindingIP
id = job.Args[0]
hostIP = job.Getenv("HostIP")
hostPort = job.GetenvInt("HostPort")
containerPort = job.GetenvInt("ContainerPort")
proto = job.Getenv("Proto")
network = currentInterfaces.Get(id)
)
if hostIP != "" {
ip = net.ParseIP(hostIP)
}
// host ip, proto, and host port
var container net.Addr
switch proto {
case "tcp":
container = &net.TCPAddr{IP: network.IP, Port: containerPort}
case "udp":
container = &net.UDPAddr{IP: network.IP, Port: containerPort}
default:
return job.Errorf("unsupported address type %s", proto)
}
//
// Try up to 10 times to get a port that's not already allocated.
//
// In the event of failure to bind, return the error that portmapper.Map
// yields.
//
var host net.Addr
for i := 0; i < MaxAllocatedPortAttempts; i++ {
if host, err = portmapper.Map(container, ip, hostPort); err == nil {
break
}
if allocerr, ok := err.(portallocator.ErrPortAlreadyAllocated); ok {
// There is no point in immediately retrying to map an explicitly
// chosen port.
if hostPort != 0 {
job.Logf("Failed to bind %s for container address %s: %s", allocerr.IPPort(), container.String(), allocerr.Error())
break
}
// Automatically chosen 'free' port failed to bind: move on the next.
job.Logf("Failed to bind %s for container address %s. Trying another port.", allocerr.IPPort(), container.String())
} else {
// some other error during mapping
job.Logf("Received an unexpected error during port allocation: %s", err.Error())
break
}
}
if err != nil {
return job.Error(err)
}
network.PortMappings = append(network.PortMappings, host)
out := engine.Env{}
switch netAddr := host.(type) {
case *net.TCPAddr:
out.Set("HostIP", netAddr.IP.String())
out.SetInt("HostPort", netAddr.Port)
case *net.UDPAddr:
out.Set("HostIP", netAddr.IP.String())
out.SetInt("HostPort", netAddr.Port)
}
if _, err := out.WriteTo(job.Stdout); err != nil {
return job.Error(err)
}
return engine.StatusOK
}
func (daemon *Daemon) Containers(job *engine.Job) engine.Status {
var (
foundBefore bool
displayed int
all = job.GetenvBool("all")
since = job.Getenv("since")
before = job.Getenv("before")
n = job.GetenvInt("limit")
size = job.GetenvBool("size")
psFilters filters.Args
filt_exited []int
)
outs := engine.NewTable("Created", 0)
psFilters, err := filters.FromParam(job.Getenv("filters"))
if err != nil {
return job.Error(err)
}
if i, ok := psFilters["exited"]; ok {
for _, value := range i {
code, err := strconv.Atoi(value)
if err != nil {
return job.Error(err)
}
filt_exited = append(filt_exited, code)
}
}
names := map[string][]string{}
daemon.ContainerGraph().Walk("/", func(p string, e *graphdb.Entity) error {
names[e.ID()] = append(names[e.ID()], p)
return nil
}, -1)
var beforeCont, sinceCont *Container
if before != "" {
beforeCont = daemon.Get(before)
if beforeCont == nil {
return job.Error(fmt.Errorf("Could not find container with name or id %s", before))
}
}
if since != "" {
sinceCont = daemon.Get(since)
if sinceCont == nil {
return job.Error(fmt.Errorf("Could not find container with name or id %s", since))
}
}
errLast := errors.New("last container")
writeCont := func(container *Container) error {
container.Lock()
defer container.Unlock()
if !container.State.IsRunning() && !all && n <= 0 && since == "" && before == "" {
return nil
}
if before != "" && !foundBefore {
if container.ID == beforeCont.ID {
foundBefore = true
}
return nil
}
if n > 0 && displayed == n {
return errLast
}
if since != "" {
if container.ID == sinceCont.ID {
return errLast
}
}
if len(filt_exited) > 0 && !container.State.IsRunning() {
should_skip := true
for _, code := range filt_exited {
if code == container.State.GetExitCode() {
should_skip = false
break
}
}
if should_skip {
return nil
}
}
displayed++
out := &engine.Env{}
out.Set("Id", container.ID)
out.SetList("Names", names[container.ID])
out.Set("Image", daemon.Repositories().ImageName(container.Image))
if len(container.Args) > 0 {
args := []string{}
for _, arg := range container.Args {
if strings.Contains(arg, " ") {
args = append(args, fmt.Sprintf("'%s'", arg))
} else {
args = append(args, arg)
}
}
argsAsString := strings.Join(args, " ")
out.Set("Command", fmt.Sprintf("\"%s %s\"", container.Path, argsAsString))
} else {
out.Set("Command", fmt.Sprintf("\"%s\"", container.Path))
}
out.SetInt64("Created", container.Created.Unix())
out.Set("Status", container.State.String())
str, err := container.NetworkSettings.PortMappingAPI().ToListString()
if err != nil {
return err
}
out.Set("Ports", str)
if size {
sizeRw, sizeRootFs := container.GetSize()
out.SetInt64("SizeRw", sizeRw)
out.SetInt64("SizeRootFs", sizeRootFs)
}
outs.Add(out)
return nil
}
for _, container := range daemon.List() {
if err := writeCont(container); err != nil {
if err != errLast {
return job.Error(err)
}
break
}
}
outs.ReverseSort()
if _, err := outs.WriteListTo(job.Stdout); err != nil {
return job.Error(err)
}
return engine.StatusOK
}