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Splitting the exec remote API into two separate APIs inorder to support resizing of tty sessions.

1. /container/<name>/exec - Creates a new exec command instance in the daemon and container '<name>'. Returns an unique ID for each exec command.
2. /exec/<name>/start - Starts an existing exec command instance. Removes the exec command from the daemon once it completes.

Adding /exec/<name>/resize to resize tty session of an exec command.

Docker-DCO-1.1-Signed-off-by: Vishnu Kannan <vishnuk@google.com> (github: vishh)
This commit is contained in:
Vishnu Kannan
2014-09-15 22:56:47 +00:00
parent 0029180f7f
commit bfebdfde78
5 changed files with 225 additions and 50 deletions

View File

@ -793,7 +793,7 @@ func postContainersResize(eng *engine.Engine, version version.Version, w http.Re
if vars == nil {
return fmt.Errorf("Missing parameter")
}
if err := eng.Job("resize", vars["name"], r.Form.Get("h"), r.Form.Get("w")).Run(); err != nil {
if err := eng.Job("resize", vars["name"], r.Form.Get("h"), r.Form.Get("w"), r.Form.Get("exec")).Run(); err != nil {
return err
}
return nil
@ -1025,18 +1025,45 @@ func postContainersCopy(eng *engine.Engine, version version.Version, w http.Resp
return nil
}
func postContainersExec(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
func postContainerExecCreate(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return nil
}
var (
name = vars["name"]
job = eng.Job("exec", name)
out engine.Env
name = vars["name"]
job = eng.Job("execCreate", name)
stdoutBuffer = bytes.NewBuffer(nil)
)
if err := job.DecodeEnv(r.Body); err != nil {
return err
}
var errOut io.Writer = os.Stderr
job.Stdout.Add(stdoutBuffer)
// Register an instance of Exec in container.
if err := job.Run(); err != nil {
fmt.Fprintf(os.Stderr, "Error setting up exec command in container %s: %s\n", name, err)
return err
}
// Return the ID
out.Set("Id", engine.Tail(stdoutBuffer, 1))
return writeJSON(w, http.StatusCreated, out)
}
func postContainerExecStart(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return nil
}
var (
name = vars["name"]
job = eng.Job("execStart", name)
errOut io.Writer = os.Stderr
)
if err := job.DecodeEnv(r.Body); err != nil {
return err
}
if !job.GetenvBool("Detach") {
// Setting up the streaming http interface.
@ -1076,7 +1103,7 @@ func postContainersExec(eng *engine.Engine, version version.Version, w http.Resp
}
// Now run the user process in container.
if err := job.Run(); err != nil {
fmt.Fprintf(errOut, "Error running in container %s: %s\n", name, err)
fmt.Fprintf(errOut, "Error starting exec command in container %s: %s\n", name, err)
return err
}
w.WriteHeader(http.StatusNoContent)
@ -1084,6 +1111,19 @@ func postContainersExec(eng *engine.Engine, version version.Version, w http.Resp
return nil
}
func postContainerExecResize(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if err := parseForm(r); err != nil {
return err
}
if vars == nil {
return fmt.Errorf("Missing parameter")
}
if err := eng.Job("execResize", vars["name"], r.Form.Get("h"), r.Form.Get("w")).Run(); err != nil {
return err
}
return nil
}
func optionsHandler(eng *engine.Engine, version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
w.WriteHeader(http.StatusOK)
return nil
@ -1206,7 +1246,9 @@ func createRouter(eng *engine.Engine, logging, enableCors bool, dockerVersion st
"/containers/{name:.*}/resize": postContainersResize,
"/containers/{name:.*}/attach": postContainersAttach,
"/containers/{name:.*}/copy": postContainersCopy,
"/containers/{name:.*}/exec": postContainersExec,
"/containers/{name:.*}/exec": postContainerExecCreate,
"/exec/{name:.*}/start": postContainerExecStart,
"/exec/{name:.*}/resize": postContainerExecResize,
},
"DELETE": {
"/containers/{name:.*}": deleteContainers,
@ -1393,6 +1435,7 @@ func ListenAndServe(proto, addr string, job *engine.Job) error {
return err
}
}
}
if err := os.Chmod(addr, 0660); err != nil {
return err