func (s *DockerServer) attachContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
hijacker, ok := w.(http.Hijacker)
if !ok {
http.Error(w, "cannot hijack connection", http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/vnd.docker.raw-stream")
w.WriteHeader(http.StatusOK)
conn, _, err := hijacker.Hijack()
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
outStream := stdcopy.NewStdWriter(conn, stdcopy.Stdout)
if container.State.Running {
fmt.Fprintf(outStream, "Container %q is running\n", container.ID)
} else {
fmt.Fprintf(outStream, "Container %q is not running\n", container.ID)
}
fmt.Fprintln(outStream, "What happened?")
fmt.Fprintln(outStream, "Something happened")
conn.Close()
}
func (s *DockerServer) removeImage(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
s.iMut.RLock()
var tag string
if img, ok := s.imgIDs[id]; ok {
id, tag = img, id
}
var tags []string
for tag, taggedID := range s.imgIDs {
if taggedID == id {
tags = append(tags, tag)
}
}
s.iMut.RUnlock()
_, index, err := s.findImageByID(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
w.WriteHeader(http.StatusNoContent)
s.iMut.Lock()
defer s.iMut.Unlock()
if len(tags) < 2 {
s.images[index] = s.images[len(s.images)-1]
s.images = s.images[:len(s.images)-1]
}
if tag != "" {
delete(s.imgIDs, tag)
}
}
func (s *DockerServer) createExecContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
exec := docker.ExecInspect{
ID: s.generateID(),
Container: *container,
}
var params docker.CreateExecOptions
err = json.NewDecoder(r.Body).Decode(¶ms)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
if len(params.Cmd) > 0 {
exec.ProcessConfig.EntryPoint = params.Cmd[0]
if len(params.Cmd) > 1 {
exec.ProcessConfig.Arguments = params.Cmd[1:]
}
}
s.execMut.Lock()
s.execs = append(s.execs, &exec)
s.execMut.Unlock()
w.WriteHeader(http.StatusOK)
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(map[string]string{"Id": exec.ID})
}
func (s *DockerServer) resizeExecContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
if _, err := s.getExec(id); err == nil {
w.WriteHeader(http.StatusOK)
return
}
w.WriteHeader(http.StatusNotFound)
}
func (s *DockerServer) inspectExecContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
if exec, err := s.getExec(id); err == nil {
w.WriteHeader(http.StatusOK)
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(exec)
return
}
w.WriteHeader(http.StatusNotFound)
}
func (s *DockerServer) inspectContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(container)
}
func (s *DockerServer) inspectVolume(w http.ResponseWriter, r *http.Request) {
s.volMut.RLock()
defer s.volMut.RUnlock()
name := mux.Vars(r)["name"]
vol, err := s.findVolume(name)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(vol.volume)
}
func (s *DockerServer) attachContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
hijacker, ok := w.(http.Hijacker)
if !ok {
http.Error(w, "cannot hijack connection", http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/vnd.docker.raw-stream")
w.WriteHeader(http.StatusOK)
conn, _, err := hijacker.Hijack()
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
wg := sync.WaitGroup{}
if r.URL.Query().Get("stdin") == "1" {
wg.Add(1)
go func() {
ioutil.ReadAll(conn)
wg.Done()
}()
}
outStream := stdcopy.NewStdWriter(conn, stdcopy.Stdout)
if container.State.Running {
fmt.Fprintf(outStream, "Container is running\n")
} else {
fmt.Fprintf(outStream, "Container is not running\n")
}
fmt.Fprintln(outStream, "What happened?")
fmt.Fprintln(outStream, "Something happened")
wg.Wait()
if r.URL.Query().Get("stream") == "1" {
for {
time.Sleep(1e6)
s.cMut.RLock()
if !container.State.Running {
s.cMut.RUnlock()
break
}
s.cMut.RUnlock()
}
}
conn.Close()
}
func (s *DockerServer) unpauseContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
s.cMut.Lock()
defer s.cMut.Unlock()
if !container.State.Paused {
http.Error(w, "Container not paused", http.StatusBadRequest)
return
}
w.WriteHeader(http.StatusNoContent)
container.State.Paused = false
}
func (s *DockerServer) uploadToContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
if !container.State.Running {
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(w, "Container %s is not running", id)
return
}
path := r.URL.Query().Get("path")
s.uploadedFiles[id] = path
w.WriteHeader(http.StatusOK)
}
func (s *DockerServer) inspectImage(w http.ResponseWriter, r *http.Request) {
name := mux.Vars(r)["name"]
s.iMut.RLock()
defer s.iMut.RUnlock()
if id, ok := s.imgIDs[name]; ok {
for _, img := range s.images {
if img.ID == id {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(img)
return
}
}
}
http.Error(w, "not found", http.StatusNotFound)
}
func (s *DockerServer) renameContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, index, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
copy := *container
copy.Name = r.URL.Query().Get("name")
s.cMut.Lock()
defer s.cMut.Unlock()
if s.containers[index].ID == copy.ID {
s.containers[index] = ©
}
w.WriteHeader(http.StatusNoContent)
}
func (s *DockerServer) pushImage(w http.ResponseWriter, r *http.Request) {
name := mux.Vars(r)["name"]
tag := r.URL.Query().Get("tag")
if tag != "" {
name += ":" + tag
}
s.iMut.RLock()
if _, ok := s.imgIDs[name]; !ok {
s.iMut.RUnlock()
http.Error(w, "No such image", http.StatusNotFound)
return
}
s.iMut.RUnlock()
fmt.Fprintln(w, "Pushing...")
fmt.Fprintln(w, "Pushed")
}
func (s *DockerServer) removeVolume(w http.ResponseWriter, r *http.Request) {
s.volMut.Lock()
defer s.volMut.Unlock()
name := mux.Vars(r)["name"]
vol, err := s.findVolume(name)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
if vol.count != 0 {
http.Error(w, "volume in use and cannot be removed", http.StatusConflict)
return
}
s.volStore[vol.volume.Name] = nil
w.WriteHeader(http.StatusNoContent)
}
func (s *DockerServer) stopContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
s.cMut.Lock()
defer s.cMut.Unlock()
if !container.State.Running {
http.Error(w, "Container not running", http.StatusBadRequest)
return
}
w.WriteHeader(http.StatusNoContent)
container.State.Running = false
s.notify(container)
}
func (s *DockerServer) startContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
s.cMut.Lock()
defer s.cMut.Unlock()
defer r.Body.Close()
var hostConfig docker.HostConfig
err = json.NewDecoder(r.Body).Decode(&hostConfig)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
container.HostConfig = &hostConfig
if len(hostConfig.PortBindings) > 0 {
ports := map[docker.Port][]docker.PortBinding{}
for key, items := range hostConfig.PortBindings {
bindings := make([]docker.PortBinding, len(items))
for i := range items {
binding := docker.PortBinding{
HostIP: items[i].HostIP,
HostPort: items[i].HostPort,
}
if binding.HostIP == "" {
binding.HostIP = "0.0.0.0"
}
if binding.HostPort == "" {
binding.HostPort = strconv.Itoa(mathrand.Int() % 0xffff)
}
bindings[i] = binding
}
ports[key] = bindings
}
container.NetworkSettings.Ports = ports
}
if container.State.Running {
http.Error(w, "", http.StatusNotModified)
return
}
container.State.Running = true
s.notify(container)
}
func (s *DockerServer) tagImage(w http.ResponseWriter, r *http.Request) {
name := mux.Vars(r)["name"]
s.iMut.RLock()
if _, ok := s.imgIDs[name]; !ok {
s.iMut.RUnlock()
http.Error(w, "No such image", http.StatusNotFound)
return
}
s.iMut.RUnlock()
s.iMut.Lock()
defer s.iMut.Unlock()
newRepo := r.URL.Query().Get("repo")
newTag := r.URL.Query().Get("tag")
if newTag != "" {
newRepo += ":" + newTag
}
s.imgIDs[newRepo] = s.imgIDs[name]
w.WriteHeader(http.StatusCreated)
}
func (s *DockerServer) removeContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
force := r.URL.Query().Get("force")
_, index, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
if s.containers[index].State.Running && force != "1" {
msg := "Error: API error (406): Impossible to remove a running container, please stop it first"
http.Error(w, msg, http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusNoContent)
s.cMut.Lock()
defer s.cMut.Unlock()
s.containers[index] = s.containers[len(s.containers)-1]
s.containers = s.containers[:len(s.containers)-1]
}
func (s *DockerServer) waitContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
for {
time.Sleep(1e6)
s.cMut.RLock()
if !container.State.Running {
s.cMut.RUnlock()
break
}
s.cMut.RUnlock()
}
result := map[string]int{"StatusCode": container.State.ExitCode}
json.NewEncoder(w).Encode(result)
}
func (s *DockerServer) startExecContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
if exec, err := s.getExec(id); err == nil {
s.execMut.Lock()
exec.Running = true
s.execMut.Unlock()
if callback, ok := s.execCallbacks[id]; ok {
callback()
delete(s.execCallbacks, id)
} else if callback, ok := s.execCallbacks["*"]; ok {
callback()
delete(s.execCallbacks, "*")
}
s.execMut.Lock()
exec.Running = false
s.execMut.Unlock()
w.WriteHeader(http.StatusOK)
return
}
w.WriteHeader(http.StatusNotFound)
}
func (s *DockerServer) topContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
if !container.State.Running {
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(w, "Container %s is not running", id)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
result := docker.TopResult{
Titles: []string{"UID", "PID", "PPID", "C", "STIME", "TTY", "TIME", "CMD"},
Processes: [][]string{
{"root", "7535", "7516", "0", "03:20", "?", "00:00:00", container.Path + " " + strings.Join(container.Args, " ")},
},
}
json.NewEncoder(w).Encode(result)
}
func (s *DockerServer) statsContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
_, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
stream, _ := strconv.ParseBool(r.URL.Query().Get("stream"))
callback := s.statsCallbacks[id]
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
encoder := json.NewEncoder(w)
for {
var stats docker.Stats
if callback != nil {
stats = callback(id)
}
encoder.Encode(stats)
if !stream {
break
}
}
}
func (s *DockerServer) startContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
s.cMut.Lock()
defer s.cMut.Unlock()
defer r.Body.Close()
var hostConfig docker.HostConfig
err = json.NewDecoder(r.Body).Decode(&hostConfig)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
container.HostConfig = &hostConfig
if container.State.Running {
http.Error(w, "Container already running", http.StatusBadRequest)
return
}
container.State.Running = true
s.notify(container)
}