package generic import ( "encoding/binary" "fmt" "net/http" "strconv" "strings" "sync" "time" "github.com/containers/libpod/libpod" "github.com/containers/libpod/libpod/logs" "github.com/containers/libpod/pkg/api/handlers" "github.com/containers/libpod/pkg/api/handlers/utils" "github.com/containers/libpod/pkg/util" "github.com/gorilla/mux" "github.com/gorilla/schema" "github.com/pkg/errors" log "github.com/sirupsen/logrus" ) func RemoveContainer(w http.ResponseWriter, r *http.Request) { decoder := r.Context().Value("decoder").(*schema.Decoder) query := struct { Force bool `schema:"force"` Vols bool `schema:"v"` Link bool `schema:"link"` }{ // override any golang type defaults } if err := decoder.Decode(&query, r.URL.Query()); err != nil { utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, errors.Wrapf(err, "Failed to parse parameters for %s", r.URL.String())) return } if query.Link { utils.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest, utils.ErrLinkNotSupport) return } utils.RemoveContainer(w, r, query.Force, query.Vols) } func ListContainers(w http.ResponseWriter, r *http.Request) { var ( containers []*libpod.Container err error ) runtime := r.Context().Value("runtime").(*libpod.Runtime) decoder := r.Context().Value("decoder").(*schema.Decoder) query := struct { All bool `schema:"all"` Limit int `schema:"limit"` Size bool `schema:"size"` Filters map[string][]string `schema:"filters"` }{ // override any golang type defaults } if err := decoder.Decode(&query, r.URL.Query()); err != nil { utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "Failed to parse parameters for %s", r.URL.String())) return } if query.All { containers, err = runtime.GetAllContainers() } else { containers, err = runtime.GetRunningContainers() } if err != nil { utils.InternalServerError(w, err) return } if _, found := mux.Vars(r)["limit"]; found { last := query.Limit if len(containers) > last { containers = containers[len(containers)-last:] } } // TODO filters still need to be applied infoData, err := runtime.Info() if err != nil { utils.InternalServerError(w, errors.Wrapf(err, "Failed to obtain system info")) return } var list = make([]*handlers.Container, len(containers)) for i, ctnr := range containers { api, err := handlers.LibpodToContainer(ctnr, infoData) if err != nil { utils.InternalServerError(w, err) return } list[i] = api } utils.WriteResponse(w, http.StatusOK, list) } func GetContainer(w http.ResponseWriter, r *http.Request) { runtime := r.Context().Value("runtime").(*libpod.Runtime) name := utils.GetName(r) ctnr, err := runtime.LookupContainer(name) if err != nil { utils.ContainerNotFound(w, name, err) return } api, err := handlers.LibpodToContainerJSON(ctnr) if err != nil { utils.InternalServerError(w, err) return } utils.WriteResponse(w, http.StatusOK, api) } func KillContainer(w http.ResponseWriter, r *http.Request) { // /{version}/containers/(name)/kill con, err := utils.KillContainer(w, r) if err != nil { return } // the kill behavior for docker differs from podman in that they appear to wait // for the Container to croak so the exit code is accurate immediately after the // kill is sent. libpod does not. but we can add a wait here only for the docker // side of things and mimic that behavior if _, err = con.Wait(); err != nil { utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrapf(err, "failed to wait for Container %s", con.ID())) return } // Success utils.WriteResponse(w, http.StatusNoContent, "") } func WaitContainer(w http.ResponseWriter, r *http.Request) { var msg string // /{version}/containers/(name)/wait exitCode, err := utils.WaitContainer(w, r) if err != nil { msg = err.Error() } utils.WriteResponse(w, http.StatusOK, handlers.ContainerWaitOKBody{ StatusCode: int(exitCode), Error: struct { Message string }{ Message: msg, }, }) } func LogsFromContainer(w http.ResponseWriter, r *http.Request) { decoder := r.Context().Value("decoder").(*schema.Decoder) runtime := r.Context().Value("runtime").(*libpod.Runtime) query := struct { Follow bool `schema:"follow"` Stdout bool `schema:"stdout"` Stderr bool `schema:"stderr"` Since string `schema:"since"` Until string `schema:"until"` Timestamps bool `schema:"timestamps"` Tail string `schema:"tail"` }{ Tail: "all", } if err := decoder.Decode(&query, r.URL.Query()); err != nil { utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrapf(err, "Failed to parse parameters for %s", r.URL.String())) return } if !(query.Stdout || query.Stderr) { msg := fmt.Sprintf("%s: you must choose at least one stream", http.StatusText(http.StatusBadRequest)) utils.Error(w, msg, http.StatusBadRequest, errors.Errorf("%s for %s", msg, r.URL.String())) return } name := utils.GetName(r) ctnr, err := runtime.LookupContainer(name) if err != nil { utils.ContainerNotFound(w, name, err) return } var tail int64 = -1 if query.Tail != "all" { tail, err = strconv.ParseInt(query.Tail, 0, 64) if err != nil { utils.BadRequest(w, "tail", query.Tail, err) return } } var since time.Time if _, found := mux.Vars(r)["since"]; found { since, err = util.ParseInputTime(query.Since) if err != nil { utils.BadRequest(w, "since", query.Since, err) return } } var until time.Time if _, found := mux.Vars(r)["until"]; found { since, err = util.ParseInputTime(query.Until) if err != nil { utils.BadRequest(w, "until", query.Until, err) return } } options := &logs.LogOptions{ Details: true, Follow: query.Follow, Since: since, Tail: tail, Timestamps: query.Timestamps, } var wg sync.WaitGroup options.WaitGroup = &wg logChannel := make(chan *logs.LogLine, tail+1) if err := runtime.Log([]*libpod.Container{ctnr}, options, logChannel); err != nil { utils.InternalServerError(w, errors.Wrapf(err, "Failed to obtain logs for Container '%s'", name)) return } go func() { wg.Wait() close(logChannel) }() w.WriteHeader(http.StatusOK) var builder strings.Builder for ok := true; ok; ok = query.Follow { for line := range logChannel { if _, found := mux.Vars(r)["until"]; found { if line.Time.After(until) { break } } // Reset variables we're ready to loop again builder.Reset() header := [8]byte{} switch line.Device { case "stdout": if !query.Stdout { continue } header[0] = 1 case "stderr": if !query.Stderr { continue } header[0] = 2 default: // Logging and moving on is the best we can do here. We may have already sent // a Status and Content-Type to client therefore we can no longer report an error. log.Infof("unknown Device type '%s' in log file from Container %s", line.Device, ctnr.ID()) continue } if query.Timestamps { builder.WriteString(line.Time.Format(time.RFC3339)) builder.WriteRune(' ') } builder.WriteString(line.Msg) // Build header and output entry binary.BigEndian.PutUint32(header[4:], uint32(len(header)+builder.Len())) if _, err := w.Write(header[:]); err != nil { log.Errorf("unable to write log output header: %q", err) } if _, err := fmt.Fprint(w, builder.String()); err != nil { log.Errorf("unable to write builder string: %q", err) } if flusher, ok := w.(http.Flusher); ok { flusher.Flush() } } } }