forked from containerd/containerd
/
update.go
95 lines (89 loc) · 1.83 KB
/
update.go
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package supervisor
import (
"time"
"github.com/containerd/containerd/runtime"
)
// UpdateTask holds needed parameters to update a container resource constraints
type UpdateTask struct {
baseTask
ID string
State runtime.State
Resources *runtime.Resource
}
func (s *Supervisor) updateContainer(t *UpdateTask) error {
i, ok := s.containers[t.ID]
if !ok {
return ErrContainerNotFound
}
container := i.container
if t.State != "" {
switch t.State {
case runtime.Running:
if err := container.Resume(); err != nil {
return err
}
s.notifySubscribers(Event{
ID: t.ID,
Type: StateResume,
Timestamp: time.Now(),
})
case runtime.Paused:
if err := container.Pause(); err != nil {
return err
}
s.notifySubscribers(Event{
ID: t.ID,
Type: StatePause,
Timestamp: time.Now(),
})
default:
return ErrUnknownContainerStatus
}
return nil
}
if t.Resources != nil {
return container.UpdateResources(t.Resources)
}
return nil
}
// UpdateProcessTask holds needed parameters to update a container
// process terminal size or close its stdin
type UpdateProcessTask struct {
baseTask
ID string
PID string
CloseStdin bool
Width int
Height int
}
func (s *Supervisor) updateProcess(t *UpdateProcessTask) error {
i, ok := s.containers[t.ID]
if !ok {
return ErrContainerNotFound
}
processes, err := i.container.Processes()
if err != nil {
return err
}
var process runtime.Process
for _, p := range processes {
if p.ID() == t.PID {
process = p
break
}
}
if process == nil {
return ErrProcessNotFound
}
if t.CloseStdin {
if err := process.CloseStdin(); err != nil {
return err
}
}
if t.Width > 0 || t.Height > 0 {
if err := process.Resize(t.Width, t.Height); err != nil {
return err
}
}
return nil
}