cri-o/server/container_status.go
Ryan Cole 64ad902480 Decouple kubernetes-dependent an non-dependent parts of server
Move non-kubernetes-dependent portions of server struct to libkpod.
So far, only the struct fields have been moved and not their dependent
functions

Signed-off-by: Ryan Cole <rcyoalne@gmail.com>
2017-07-18 14:23:50 -04:00

165 lines
4 KiB
Go

package server
import (
"encoding/json"
"fmt"
"github.com/Sirupsen/logrus"
"github.com/docker/distribution/reference"
"github.com/kubernetes-incubator/cri-o/oci"
rspec "github.com/opencontainers/runtime-spec/specs-go"
"golang.org/x/net/context"
pb "k8s.io/kubernetes/pkg/kubelet/api/v1alpha1/runtime"
)
const (
oomKilledReason = "OOMKilled"
completedReason = "Completed"
errorReason = "Error"
)
// ContainerStatus returns status of the container.
func (s *Server) ContainerStatus(ctx context.Context, req *pb.ContainerStatusRequest) (*pb.ContainerStatusResponse, error) {
logrus.Debugf("ContainerStatusRequest %+v", req)
c, err := s.getContainerFromRequest(req.ContainerId)
if err != nil {
return nil, err
}
if err = s.Runtime().UpdateStatus(c); err != nil {
return nil, err
}
s.containerStateToDisk(c)
containerID := c.ID()
resp := &pb.ContainerStatusResponse{
Status: &pb.ContainerStatus{
Id: containerID,
Metadata: c.Metadata(),
Labels: c.Labels(),
Annotations: c.Annotations(),
},
}
mounts, err := s.getMounts(containerID)
if err != nil {
return nil, err
}
resp.Status.Mounts = mounts
imageName := c.Image()
status, err := s.StorageImageServer().ImageStatus(s.ImageContext(), imageName)
if err != nil {
return nil, err
}
imageRef := status.ID
//
// TODO: https://github.com/kubernetes-incubator/cri-o/issues/531
//
//for _, n := range status.Names {
//r, err := reference.ParseNormalizedNamed(n)
//if err != nil {
//return nil, fmt.Errorf("failed to normalize image name for ImageRef: %v", err)
//}
//if digested, isDigested := r.(reference.Canonical); isDigested {
//imageRef = reference.FamiliarString(digested)
//break
//}
//}
resp.Status.ImageRef = imageRef
for _, n := range status.Names {
r, err := reference.ParseNormalizedNamed(n)
if err != nil {
return nil, fmt.Errorf("failed to normalize image name for Image: %v", err)
}
if tagged, isTagged := r.(reference.Tagged); isTagged {
imageName = reference.FamiliarString(tagged)
break
}
}
resp.Status.Image = &pb.ImageSpec{Image: imageName}
cState := s.Runtime().ContainerStatus(c)
rStatus := pb.ContainerState_CONTAINER_UNKNOWN
switch cState.Status {
case oci.ContainerStateCreated:
rStatus = pb.ContainerState_CONTAINER_CREATED
created := cState.Created.UnixNano()
resp.Status.CreatedAt = created
case oci.ContainerStateRunning:
rStatus = pb.ContainerState_CONTAINER_RUNNING
created := cState.Created.UnixNano()
resp.Status.CreatedAt = created
started := cState.Started.UnixNano()
resp.Status.StartedAt = started
case oci.ContainerStateStopped:
rStatus = pb.ContainerState_CONTAINER_EXITED
created := cState.Created.UnixNano()
resp.Status.CreatedAt = created
started := cState.Started.UnixNano()
resp.Status.StartedAt = started
finished := cState.Finished.UnixNano()
resp.Status.FinishedAt = finished
resp.Status.ExitCode = cState.ExitCode
switch {
case cState.OOMKilled:
resp.Status.Reason = oomKilledReason
case cState.ExitCode == 0:
resp.Status.Reason = completedReason
default:
resp.Status.Reason = errorReason
resp.Status.Message = cState.Error
}
}
resp.Status.State = rStatus
logrus.Debugf("ContainerStatusResponse: %+v", resp)
return resp, nil
}
func (s *Server) getMounts(id string) ([]*pb.Mount, error) {
config, err := s.Store().FromContainerDirectory(id, "config.json")
if err != nil {
return nil, err
}
var m rspec.Spec
if err = json.Unmarshal(config, &m); err != nil {
return nil, err
}
isRO := func(m rspec.Mount) bool {
var ro bool
for _, o := range m.Options {
if o == "ro" {
ro = true
break
}
}
return ro
}
isBind := func(m rspec.Mount) bool {
var bind bool
for _, o := range m.Options {
if o == "bind" || o == "rbind" {
bind = true
break
}
}
return bind
}
mounts := []*pb.Mount{}
for _, b := range m.Mounts {
if !isBind(b) {
continue
}
mounts = append(mounts, &pb.Mount{
ContainerPath: b.Destination,
HostPath: b.Source,
Readonly: isRO(b),
})
}
return mounts, nil
}