func appState(app *App, pod *pkgPod.Pod) error {
app.State = AppStateUnknown
defer func() {
if pod.AfterRun() {
// If the pod is hard killed, set the app to 'exited' state.
// Other than this case, status file is guaranteed to be written.
if app.State != AppStateExited {
app.State = AppStateExited
t, err := pod.GCMarkedTime()
if err != nil {
fmt.Fprintf(os.Stderr, "Cannot get GC marked time: %v", err)
}
if !t.IsZero() {
finishedAt := t.UnixNano()
app.FinishedAt = &finishedAt
}
}
}
}()
// Check if the app is created.
fi, err := os.Stat(common.AppCreatedPath(pod.Path(), app.Name))
if err != nil {
if !os.IsNotExist(err) {
return fmt.Errorf("cannot stat app creation file: %v", err)
}
return nil
}
app.State = AppStateCreated
createdAt := fi.ModTime().UnixNano()
app.CreatedAt = &createdAt
// Check if the app is started.
fi, err = os.Stat(common.AppStartedPath(pod.Path(), app.Name))
if err != nil {
if !os.IsNotExist(err) {
return fmt.Errorf("cannot stat app started file: %v", err)
}
return nil
}
app.State = AppStateRunning
startedAt := fi.ModTime().UnixNano()
app.StartedAt = &startedAt
// Check if the app is exited.
appStatusFile := common.AppStatusPath(pod.Path(), app.Name)
fi, err = os.Stat(appStatusFile)
if err != nil {
if !os.IsNotExist(err) {
return fmt.Errorf("cannot stat app exited file: %v", err)
}
return nil
}
app.State = AppStateExited
finishedAt := fi.ModTime().UnixNano()
app.FinishedAt = &finishedAt
// Read exit code.
exitCode, err := readExitCode(appStatusFile)
if err != nil {
return fmt.Errorf("cannot read exit code: %v", err)
}
app.ExitCode = &exitCode
return 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 *pkgPod.Pod, v1pod *v1alpha.Pod) {
v1pod.Pid = -1
switch p.State() {
case pkgPod.Embryo:
v1pod.State = v1alpha.PodState_POD_STATE_EMBRYO
// When a pod is in embryo state, there is not much
// information to return.
return
case pkgPod.Preparing:
v1pod.State = v1alpha.PodState_POD_STATE_PREPARING
case pkgPod.AbortedPrepare:
v1pod.State = v1alpha.PodState_POD_STATE_ABORTED_PREPARE
case pkgPod.Prepared:
v1pod.State = v1alpha.PodState_POD_STATE_PREPARED
case pkgPod.Running:
v1pod.State = v1alpha.PodState_POD_STATE_RUNNING
v1pod.Networks = getNetworks(p)
case pkgPod.Deleting:
v1pod.State = v1alpha.PodState_POD_STATE_DELETING
case pkgPod.Exited:
v1pod.State = v1alpha.PodState_POD_STATE_EXITED
case pkgPod.Garbage, pkgPod.ExitedGarbage:
v1pod.State = v1alpha.PodState_POD_STATE_GARBAGE
default:
v1pod.State = v1alpha.PodState_POD_STATE_UNDEFINED
return
}
createdAt, err := p.CreationTime()
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.StartTime()
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.GCMarkedTime()
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.Pid()
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 {
pid, err := p.ContainerPid1()
if err != nil {
stderr.PrintE(fmt.Sprintf("failed to get the container PID1 for pod %q", p.UUID), err)
} else {
cgroup, err := getPodCgroup(p, pid)
if err != nil {
stderr.PrintE(fmt.Sprintf("failed to get the cgroup path for pod %q", p.UUID), err)
} else {
v1pod.Cgroup = cgroup
}
}
}
for _, app := range v1pod.Apps {
readStatus := false
if p.State() == pkgPod.Running {
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 {
exitCode, err := p.AppExitCode(app.Name)
if err != nil {
stderr.PrintE(fmt.Sprintf("failed to read status for app %q", app.Name), err)
}
app.ExitCode = int32(exitCode)
}
}
}