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package compat
import (
"encoding/json"
"fmt"
"net/http"
"strings"
"github.com/containers/libpod/libpod"
"github.com/containers/libpod/libpod/define"
"github.com/containers/libpod/pkg/api/handlers"
"github.com/containers/libpod/pkg/api/handlers/utils"
"github.com/gorilla/mux"
"github.com/pkg/errors"
)
// ExecCreateHandler creates an exec session for a given container.
func ExecCreateHandler(w http.ResponseWriter, r *http.Request) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
input := new(handlers.ExecCreateConfig)
if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
utils.InternalServerError(w, errors.Wrapf(err, "error decoding request body as JSON"))
return
}
ctrName := utils.GetName(r)
ctr, err := runtime.LookupContainer(ctrName)
if err != nil {
utils.ContainerNotFound(w, ctrName, err)
return
}
libpodConfig := new(libpod.ExecConfig)
libpodConfig.Command = input.Cmd
libpodConfig.Terminal = input.Tty
libpodConfig.AttachStdin = input.AttachStdin
libpodConfig.AttachStderr = input.AttachStderr
libpodConfig.AttachStdout = input.AttachStdout
if input.DetachKeys != "" {
libpodConfig.DetachKeys = &input.DetachKeys
}
libpodConfig.Environment = make(map[string]string)
for _, envStr := range input.Env {
split := strings.SplitN(envStr, "=", 2)
if len(split) != 2 {
utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, errors.Errorf("environment variable %q badly formed, must be key=value", envStr))
return
}
libpodConfig.Environment[split[0]] = split[1]
}
libpodConfig.WorkDir = input.WorkingDir
libpodConfig.Privileged = input.Privileged
libpodConfig.User = input.User
sessID, err := ctr.ExecCreate(libpodConfig)
if err != nil {
if errors.Cause(err) == define.ErrCtrStateInvalid {
// Check if the container is paused. If so, return a 409
state, err := ctr.State()
if err == nil {
// Ignore the error != nil case. We're already
// throwing an InternalServerError below.
if state == define.ContainerStatePaused {
utils.Error(w, "Container is paused", http.StatusConflict, errors.Errorf("cannot create exec session as container %s is paused", ctr.ID()))
return
}
}
}
utils.InternalServerError(w, err)
return
}
resp := new(handlers.ExecCreateResponse)
resp.ID = sessID
utils.WriteResponse(w, http.StatusCreated, resp)
}
// ExecInspectHandler inspects a given exec session.
func ExecInspectHandler(w http.ResponseWriter, r *http.Request) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
sessionID := mux.Vars(r)["id"]
sessionCtr, err := runtime.GetExecSessionContainer(sessionID)
if err != nil {
utils.Error(w, fmt.Sprintf("No such exec session: %s", sessionID), http.StatusNotFound, err)
return
}
session, err := sessionCtr.ExecSession(sessionID)
if err != nil {
utils.InternalServerError(w, errors.Wrapf(err, "error retrieving exec session %s from container %s", sessionID, sessionCtr.ID()))
return
}
inspectOut, err := session.Inspect()
if err != nil {
utils.InternalServerError(w, err)
return
}
utils.WriteResponse(w, http.StatusOK, inspectOut)
}
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