// Get retrieves a runtime.Object that will stream the contents of the pod log
func (r *LogREST) Get(ctx api.Context, name string, opts runtime.Object) (runtime.Object, error) {
logOpts, ok := opts.(*api.PodLogOptions)
if !ok {
return nil, fmt.Errorf("Invalid options object: %#v", opts)
}
if errs := validation.ValidatePodLogOptions(logOpts); len(errs) > 0 {
return nil, errors.NewInvalid("podlogs", name, errs)
}
location, transport, err := pod.LogLocation(r.store, r.kubeletConn, ctx, name, logOpts)
if err != nil {
return nil, err
}
return &genericrest.LocationStreamer{
Location: location,
Transport: transport,
ContentType: "text/plain",
Flush: logOpts.Follow,
}, nil
}
// getContainerLogs handles containerLogs request against the Kubelet
func (s *Server) getContainerLogs(request *restful.Request, response *restful.Response) {
podNamespace := request.PathParameter("podNamespace")
podID := request.PathParameter("podID")
containerName := request.PathParameter("containerName")
if len(podID) == 0 {
// TODO: Why return JSON when the rest return plaintext errors?
// TODO: Why return plaintext errors?
response.WriteError(http.StatusBadRequest, fmt.Errorf(`{"message": "Missing podID."}`))
return
}
if len(containerName) == 0 {
// TODO: Why return JSON when the rest return plaintext errors?
response.WriteError(http.StatusBadRequest, fmt.Errorf(`{"message": "Missing container name."}`))
return
}
if len(podNamespace) == 0 {
// TODO: Why return JSON when the rest return plaintext errors?
response.WriteError(http.StatusBadRequest, fmt.Errorf(`{"message": "Missing podNamespace."}`))
return
}
query := request.Request.URL.Query()
// backwards compatibility for the "tail" query parameter
if tail := request.QueryParameter("tail"); len(tail) > 0 {
query["tailLines"] = []string{tail}
// "all" is the same as omitting tail
if tail == "all" {
delete(query, "tailLines")
}
}
// container logs on the kubelet are locked to v1
versioned := &v1.PodLogOptions{}
if err := api.Scheme.Convert(&query, versioned); err != nil {
response.WriteError(http.StatusBadRequest, fmt.Errorf(`{"message": "Unable to decode query."}`))
return
}
out, err := api.Scheme.ConvertToVersion(versioned, "")
if err != nil {
response.WriteError(http.StatusBadRequest, fmt.Errorf(`{"message": "Unable to convert request query."}`))
return
}
logOptions := out.(*api.PodLogOptions)
logOptions.TypeMeta = unversioned.TypeMeta{}
if errs := validation.ValidatePodLogOptions(logOptions); len(errs) > 0 {
response.WriteError(apierrs.StatusUnprocessableEntity, fmt.Errorf(`{"message": "Invalid request."}`))
return
}
pod, ok := s.host.GetPodByName(podNamespace, podID)
if !ok {
response.WriteError(http.StatusNotFound, fmt.Errorf("Pod %q does not exist", podID))
return
}
// Check if containerName is valid.
containerExists := false
for _, container := range pod.Spec.Containers {
if container.Name == containerName {
containerExists = true
}
}
if !containerExists {
response.WriteError(http.StatusNotFound, fmt.Errorf("Container %q not found in Pod %q", containerName, podID))
return
}
if _, ok := response.ResponseWriter.(http.Flusher); !ok {
response.WriteError(http.StatusInternalServerError, fmt.Errorf("unable to convert %v into http.Flusher", response))
return
}
fw := flushwriter.Wrap(response.ResponseWriter)
if logOptions.LimitBytes != nil {
fw = limitwriter.New(fw, *logOptions.LimitBytes)
}
response.Header().Set("Transfer-Encoding", "chunked")
response.WriteHeader(http.StatusOK)
if err := s.host.GetKubeletContainerLogs(kubecontainer.GetPodFullName(pod), containerName, logOptions, fw, fw); err != nil {
if err != limitwriter.ErrMaximumWrite {
response.WriteError(http.StatusInternalServerError, err)
}
return
}
}