// getBasicPod returns *v1alpha.Pod with basic pod information, it also returns a *schema.PodManifest
// object.
func getBasicPod(p *pod) (*v1alpha.Pod, *schema.PodManifest, error) {
pod := &v1alpha.Pod{Id: p.uuid.String(), Pid: -1}
// If a pod is in Embryo, Preparing, AbortedPrepare state,
// only id and state will be returned.
//
// If a pod is in other states, the pod manifest and
// apps will be returned when 'detailed' is true in the request.
//
// Valid pid and networks are only returned when a pod is in Running.
switch p.getState() {
case Embryo:
pod.State = v1alpha.PodState_POD_STATE_EMBRYO
return pod, nil, nil
case Preparing:
pod.State = v1alpha.PodState_POD_STATE_PREPARING
return pod, nil, nil
case AbortedPrepare:
pod.State = v1alpha.PodState_POD_STATE_ABORTED_PREPARE
return pod, nil, nil
case Prepared:
pod.State = v1alpha.PodState_POD_STATE_PREPARED
return pod, nil, nil
case Running:
pod.State = v1alpha.PodState_POD_STATE_RUNNING
pod.Networks = getNetworks(p)
case Deleting:
pod.State = v1alpha.PodState_POD_STATE_DELETING
case Exited:
pod.State = v1alpha.PodState_POD_STATE_EXITED
case Garbage:
pod.State = v1alpha.PodState_POD_STATE_GARBAGE
default:
pod.State = v1alpha.PodState_POD_STATE_UNDEFINED
return pod, nil, nil
}
createdAt, err := p.getCreationTime()
if err != nil {
return nil, nil, err
}
startedAt, err := p.getStartTime()
if err != nil {
return nil, nil, err
}
gcMarkedAt, err := p.getGCMarkedTime()
if err != nil {
return nil, nil, err
}
pod.CreatedAt = createdAt.UnixNano()
pod.StartedAt = startedAt.UnixNano()
pod.GcMarkedAt = gcMarkedAt.UnixNano()
manifest, data, err := getPodManifest(p)
if err != nil {
return nil, nil, err
}
apps, err := getApplist(p)
if err != nil {
return nil, nil, err
}
if pod.State == v1alpha.PodState_POD_STATE_RUNNING ||
pod.State == v1alpha.PodState_POD_STATE_DELETING ||
pod.State == v1alpha.PodState_POD_STATE_EXITED {
pid, err := p.getPID()
if err != nil {
return nil, nil, err
}
pod.Pid = int32(pid)
}
if pod.State == v1alpha.PodState_POD_STATE_RUNNING {
// Get cgroup for the "name=systemd" controller.
pid, err := p.getContainerPID1()
if err != nil {
return nil, nil, err
}
cgroup, err := cgroup.GetCgroupPathByPid(pid, "name=systemd")
if err != nil {
return nil, nil, err
}
// If the stage1 systemd > v226, it will put the PID1 into "init.scope"
// implicit scope unit in the root slice.
// See https://github.com/coreos/rkt/pull/2331#issuecomment-203540543
//
// TODO(yifan): Revisit this when using unified cgroup hierarchy.
pod.Cgroup = strings.TrimSuffix(cgroup, "/init.scope")
}
pod.Manifest = data
pod.Apps = apps
pod.Annotations = convertAnnotationsToKeyValue(manifest.Annotations)
return pod, manifest, nil
}
// fillPodDetails fills the v1pod's dynamic info in place, e.g. the pod's state,
// the pod's network info, the apps' state, etc. Such information can change
// during the lifecycle of the pod, so we need to read it in every request.
func fillPodDetails(store *imagestore.Store, p *pod, v1pod *v1alpha.Pod) {
v1pod.Pid = -1
switch p.getState() {
case Embryo:
v1pod.State = v1alpha.PodState_POD_STATE_EMBRYO
// When a pod is in embryo state, there is not much
// information to return.
return
case Preparing:
v1pod.State = v1alpha.PodState_POD_STATE_PREPARING
case AbortedPrepare:
v1pod.State = v1alpha.PodState_POD_STATE_ABORTED_PREPARE
case Prepared:
v1pod.State = v1alpha.PodState_POD_STATE_PREPARED
case Running:
v1pod.State = v1alpha.PodState_POD_STATE_RUNNING
v1pod.Networks = getNetworks(p)
case Deleting:
v1pod.State = v1alpha.PodState_POD_STATE_DELETING
case Exited:
v1pod.State = v1alpha.PodState_POD_STATE_EXITED
case Garbage:
v1pod.State = v1alpha.PodState_POD_STATE_GARBAGE
default:
v1pod.State = v1alpha.PodState_POD_STATE_UNDEFINED
return
}
createdAt, err := p.getCreationTime()
if err != nil {
stderr.PrintE(fmt.Sprintf("failed to get the creation time for pod %q", p.uuid), err)
} else if !createdAt.IsZero() {
v1pod.CreatedAt = createdAt.UnixNano()
}
startedAt, err := p.getStartTime()
if err != nil {
stderr.PrintE(fmt.Sprintf("failed to get the start time for pod %q", p.uuid), err)
} else if !startedAt.IsZero() {
v1pod.StartedAt = startedAt.UnixNano()
}
gcMarkedAt, err := p.getGCMarkedTime()
if err != nil {
stderr.PrintE(fmt.Sprintf("failed to get the gc marked time for pod %q", p.uuid), err)
} else if !gcMarkedAt.IsZero() {
v1pod.GcMarkedAt = gcMarkedAt.UnixNano()
}
pid, err := p.getPID()
if err != nil {
stderr.PrintE(fmt.Sprintf("failed to get the PID for pod %q", p.uuid), err)
} else {
v1pod.Pid = int32(pid)
}
if v1pod.State == v1alpha.PodState_POD_STATE_RUNNING {
if err := waitForMachinedRegistration(v1pod.Id); err != nil {
// If there's an error, it means we're not registered to machined
// in a reasonable time. Just output the cgroup we're in.
stderr.PrintE("checking for machined registration failed", err)
}
// Get cgroup for the "name=systemd" controller.
pid, err := p.getContainerPID1()
if err != nil {
stderr.PrintE(fmt.Sprintf("failed to get the container PID1 for pod %q", p.uuid), err)
} else {
cgroup, err := cgroup.GetCgroupPathByPid(pid, "name=systemd")
if err != nil {
stderr.PrintE(fmt.Sprintf("failed to get the cgroup path for pod %q", p.uuid), err)
} else {
// If the stage1 systemd > v226, it will put the PID1 into "init.scope"
// implicit scope unit in the root slice.
// See https://github.com/coreos/rkt/pull/2331#issuecomment-203540543
//
// TODO(yifan): Revisit this when using unified cgroup hierarchy.
v1pod.Cgroup = strings.TrimSuffix(cgroup, "/init.scope")
}
}
}
for _, app := range v1pod.Apps {
readStatus := false
if p.isRunning() {
readStatus = true
app.State = v1alpha.AppState_APP_STATE_RUNNING
} else if p.afterRun() {
readStatus = true
app.State = v1alpha.AppState_APP_STATE_EXITED
} else {
app.State = v1alpha.AppState_APP_STATE_UNDEFINED
}
if readStatus {
statusDir, err := p.getStatusDir()
if err != nil {
stderr.PrintE("failed to get pod exit status directory", err)
} else {
value, err := p.readIntFromFile(filepath.Join(statusDir, app.Name))
if err != nil && !os.IsNotExist(err) {
stderr.PrintE(fmt.Sprintf("failed to read status for app %q", app.Name), err)
} else {
app.ExitCode = int32(value)
}
}
}
}
}