func (cli *DockerCli) streamHelper(method, path string, setRawTerminal bool, in io.Reader, stdout, stderr io.Writer, headers map[string][]string) error {
if (method == "POST" || method == "PUT") && in == nil {
in = bytes.NewReader([]byte{})
}
req, err := http.NewRequest(method, fmt.Sprintf("http://v%s%s", api.APIVERSION, path), in)
if err != nil {
return err
}
req.Header.Set("User-Agent", "Docker-Client/"+dockerversion.VERSION)
req.URL.Host = cli.addr
req.URL.Scheme = cli.scheme
if method == "POST" {
req.Header.Set("Content-Type", "plain/text")
}
if headers != nil {
for k, v := range headers {
req.Header[k] = v
}
}
resp, err := cli.HTTPClient().Do(req)
if err != nil {
if strings.Contains(err.Error(), "connection refused") {
return fmt.Errorf("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
}
return err
}
defer resp.Body.Close()
if resp.StatusCode < 200 || resp.StatusCode >= 400 {
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
if len(body) == 0 {
return fmt.Errorf("Error :%s", http.StatusText(resp.StatusCode))
}
return fmt.Errorf("Error: %s", bytes.TrimSpace(body))
}
if api.MatchesContentType(resp.Header.Get("Content-Type"), "application/json") || api.MatchesContentType(resp.Header.Get("Content-Type"), "application/x-json-stream") {
return utils.DisplayJSONMessagesStream(resp.Body, stdout, cli.outFd, cli.isTerminalOut)
}
if stdout != nil || stderr != nil {
// When TTY is ON, use regular copy
if setRawTerminal {
_, err = io.Copy(stdout, resp.Body)
} else {
_, err = stdcopy.StdCopy(stdout, stderr, resp.Body)
}
log.Debugf("[stream] End of stdout")
return err
}
return nil
}
func postContainersStart(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
var (
name = vars["name"]
job = eng.Job("start", name)
)
// allow a nil body for backwards compatibility
if r.Body != nil && r.ContentLength > 0 {
if !api.MatchesContentType(r.Header.Get("Content-Type"), "application/json") {
return fmt.Errorf("Content-Type of application/json is required")
}
if err := job.DecodeEnv(r.Body); err != nil {
return err
}
}
if err := job.Run(); err != nil {
if err.Error() == "Container already started" {
w.WriteHeader(http.StatusNotModified)
return nil
}
return err
}
w.WriteHeader(http.StatusNoContent)
return nil
}
func postContainersSet(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
var (
setData engine.Env
config []struct {
Key string
Value string
}
)
if contentType := r.Header.Get("Content-Type"); api.MatchesContentType(contentType, "application/json") {
if err := setData.Decode(r.Body); err != nil {
return err
}
} else {
return fmt.Errorf("Content-Type not supported: %s", contentType)
}
if err := setData.GetJson("config", &config); err != nil {
return err
}
job := eng.Job("container_set", vars["name"])
job.SetenvJson("config", config)
job.Stdout.Add(w)
if err := job.Run(); err != nil {
return err
}
return nil
}
// Check to make sure request's Content-Type is application/json
func checkForJson(r *http.Request) error {
ct := r.Header.Get("Content-Type")
// No Content-Type header is ok as long as there's no Body
if ct == "" {
if r.Body == nil || r.ContentLength == 0 {
return nil
}
}
// Otherwise it better be json
if api.MatchesContentType(ct, "application/json") {
return nil
}
return fmt.Errorf("Content-Type specified (%s) must be 'application/json'", ct)
}
func postContainersCgroup(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
saveToFile, err := getBoolParam(r.FormValue("w"))
if err != nil {
return err
}
var (
cgroupData engine.Env
readSubsystem []string
writeSubsystem []struct {
Key string
Value string
}
)
if contentType := r.Header.Get("Content-Type"); api.MatchesContentType(contentType, "application/json") {
if err := cgroupData.Decode(r.Body); err != nil {
return err
}
} else {
return fmt.Errorf("Content-Type not supported: %s", contentType)
}
readSubsystem = cgroupData.GetList("ReadSubsystem")
if err := cgroupData.GetJson("WriteSubsystem", &writeSubsystem); err != nil {
return err
}
job := eng.Job("cgroup", vars["name"])
job.SetenvList("readSubsystem", readSubsystem)
job.SetenvJson("writeSubsystem", writeSubsystem)
job.SetenvBool("saveToFile", saveToFile)
job.Stdout.Add(w)
if err := job.Run(); err != nil {
return err
}
return nil
}
func (cli *DockerCli) streamBody(body io.ReadCloser, contentType string, rawTerminal bool, stdout, stderr io.Writer) error {
defer body.Close()
if api.MatchesContentType(contentType, "application/json") {
return jsonmessage.DisplayJSONMessagesStream(body, stdout, cli.outFd, cli.isTerminalOut)
}
if stdout != nil || stderr != nil {
// When TTY is ON, use regular copy
var err error
if rawTerminal {
_, err = io.Copy(stdout, body)
} else {
_, err = stdcopy.StdCopy(stdout, stderr, body)
}
logrus.Debugf("[stream] End of stdout")
return err
}
return nil
}
func postContainersCopy(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if vars == nil {
return fmt.Errorf("Missing parameter")
}
var copyData engine.Env
if contentType := r.Header.Get("Content-Type"); api.MatchesContentType(contentType, "application/json") {
if err := copyData.Decode(r.Body); err != nil {
return err
}
} else {
return fmt.Errorf("Content-Type not supported: %s", contentType)
}
if copyData.Get("Resource") == "" {
return fmt.Errorf("Path cannot be empty")
}
origResource := copyData.Get("Resource")
if copyData.Get("Resource")[0] == '/' {
copyData.Set("Resource", copyData.Get("Resource")[1:])
}
job := eng.Job("container_copy", vars["name"], copyData.Get("Resource"))
job.Stdout.Add(w)
w.Header().Set("Content-Type", "application/x-tar")
if err := job.Run(); err != nil {
log.Errorf("%s", err.Error())
if strings.Contains(err.Error(), "No such container") {
w.WriteHeader(http.StatusNotFound)
} else if strings.Contains(err.Error(), "no such file or directory") {
return fmt.Errorf("Could not find the file %s in container %s", origResource, vars["name"])
}
}
return nil
}
func (cli *KraneClientApi) streamHelper(method, path string, setRawTerminal bool, in io.Reader, stdout, stderr io.Writer, headers map[string][]string) error {
if (method == "POST" || method == "PUT") && in == nil {
in = bytes.NewReader([]byte{})
}
var req *http.Request
var err error
if cli.strictAPIversionControl {
req, err = http.NewRequest(method, fmt.Sprintf("%s://%s:%d/v%s%s", cli.ship.Port, dockerApi.APIVERSION, path), in)
} else {
req, err = http.NewRequest(method, fmt.Sprintf("%s://%s:%d%s", cli.ship.Schema, "127.0.0.1", cli.ship.LocalPort, path), in)
}
if err != nil {
return err
}
req.Header.Set("User-Agent", "Docker-Client/"+dockerVersion.VERSION)
if method == "POST" {
req.Header.Set("Content-Type", "plain/text")
}
if headers != nil {
for k, v := range headers {
req.Header[k] = v
}
}
resp, err := cli.HTTPClient().Do(req)
if err != nil {
if strings.Contains(err.Error(), "connection refused") {
return fmt.Errorf("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
}
return err
}
defer resp.Body.Close()
if resp.StatusCode < 200 || resp.StatusCode >= 400 {
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
if len(body) == 0 {
return fmt.Errorf("Error :%s", http.StatusText(resp.StatusCode))
}
return fmt.Errorf("Error: %s", bytes.TrimSpace(body))
}
if dockerApi.MatchesContentType(resp.Header.Get("Content-Type"), "application/json") {
return dockerUtils.DisplayJSONMessagesStream(resp.Body, stdout, cli.terminalFd, cli.isTerminal)
}
if stdout != nil || stderr != nil {
// When TTY is ON, use regular copy
if setRawTerminal {
_, err = io.Copy(stdout, resp.Body)
} else {
_, err = dockerPkgStdCopy.StdCopy(stdout, stderr, resp.Body)
}
fmt.Printf("[stream] End of stdout") // TODO: Look into this
return err
}
return nil
}