147 lines
3.7 KiB
Go
147 lines
3.7 KiB
Go
/*
|
|
Copyright 2017 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package sandbox
|
|
|
|
import (
|
|
"sync"
|
|
|
|
"github.com/containerd/containerd"
|
|
"github.com/docker/docker/pkg/truncindex"
|
|
|
|
"github.com/containerd/cri/pkg/netns"
|
|
"github.com/containerd/cri/pkg/store"
|
|
)
|
|
|
|
// Sandbox contains all resources associated with the sandbox. All methods to
|
|
// mutate the internal state are thread safe.
|
|
type Sandbox struct {
|
|
// Metadata is the metadata of the sandbox, it is immutable after created.
|
|
Metadata
|
|
// Status stores the status of the sandbox.
|
|
Status StatusStorage
|
|
// Container is the containerd sandbox container client.
|
|
Container containerd.Container
|
|
// CNI network namespace client.
|
|
// For hostnetwork pod, this is always nil;
|
|
// For non hostnetwork pod, this should never be nil.
|
|
NetNS *netns.NetNS
|
|
// StopCh is used to propagate the stop information of the sandbox.
|
|
*store.StopCh
|
|
}
|
|
|
|
// NewSandbox creates an internally used sandbox type. This functions reminds
|
|
// the caller that a sandbox must have a status.
|
|
func NewSandbox(metadata Metadata, status Status) Sandbox {
|
|
s := Sandbox{
|
|
Metadata: metadata,
|
|
Status: StoreStatus(status),
|
|
StopCh: store.NewStopCh(),
|
|
}
|
|
if status.State == StateNotReady {
|
|
s.Stop()
|
|
}
|
|
return s
|
|
}
|
|
|
|
// Store stores all sandboxes.
|
|
type Store struct {
|
|
lock sync.RWMutex
|
|
sandboxes map[string]Sandbox
|
|
idIndex *truncindex.TruncIndex
|
|
}
|
|
|
|
// NewStore creates a sandbox store.
|
|
func NewStore() *Store {
|
|
return &Store{
|
|
sandboxes: make(map[string]Sandbox),
|
|
idIndex: truncindex.NewTruncIndex([]string{}),
|
|
}
|
|
}
|
|
|
|
// Add a sandbox into the store.
|
|
func (s *Store) Add(sb Sandbox) error {
|
|
s.lock.Lock()
|
|
defer s.lock.Unlock()
|
|
if _, ok := s.sandboxes[sb.ID]; ok {
|
|
return store.ErrAlreadyExist
|
|
}
|
|
if err := s.idIndex.Add(sb.ID); err != nil {
|
|
return err
|
|
}
|
|
s.sandboxes[sb.ID] = sb
|
|
return nil
|
|
}
|
|
|
|
// Get returns the sandbox with specified id. Returns store.ErrNotExist
|
|
// if the sandbox doesn't exist.
|
|
func (s *Store) Get(id string) (Sandbox, error) {
|
|
sb, err := s.GetAll(id)
|
|
if err != nil {
|
|
return sb, err
|
|
}
|
|
if sb.Status.Get().State == StateUnknown {
|
|
return Sandbox{}, store.ErrNotExist
|
|
}
|
|
return sb, nil
|
|
}
|
|
|
|
// GetAll returns the sandbox with specified id, including sandbox in unknown
|
|
// state. Returns store.ErrNotExist if the sandbox doesn't exist.
|
|
func (s *Store) GetAll(id string) (Sandbox, error) {
|
|
s.lock.RLock()
|
|
defer s.lock.RUnlock()
|
|
id, err := s.idIndex.Get(id)
|
|
if err != nil {
|
|
if err == truncindex.ErrNotExist {
|
|
err = store.ErrNotExist
|
|
}
|
|
return Sandbox{}, err
|
|
}
|
|
if sb, ok := s.sandboxes[id]; ok {
|
|
return sb, nil
|
|
}
|
|
return Sandbox{}, store.ErrNotExist
|
|
}
|
|
|
|
// List lists all sandboxes.
|
|
func (s *Store) List() []Sandbox {
|
|
s.lock.RLock()
|
|
defer s.lock.RUnlock()
|
|
var sandboxes []Sandbox
|
|
for _, sb := range s.sandboxes {
|
|
if sb.Status.Get().State == StateUnknown {
|
|
continue
|
|
}
|
|
sandboxes = append(sandboxes, sb)
|
|
}
|
|
return sandboxes
|
|
}
|
|
|
|
// Delete deletes the sandbox with specified id.
|
|
func (s *Store) Delete(id string) {
|
|
s.lock.Lock()
|
|
defer s.lock.Unlock()
|
|
id, err := s.idIndex.Get(id)
|
|
if err != nil {
|
|
// Note: The idIndex.Delete and delete doesn't handle truncated index.
|
|
// So we need to return if there are error.
|
|
return
|
|
}
|
|
s.idIndex.Delete(id) // nolint: errcheck
|
|
delete(s.sandboxes, id)
|
|
}
|