1
0
Fork 0
mirror of https://github.com/moby/moby.git synced 2022-11-09 12:21:53 -05:00
moby--moby/container/memory_store.go
David Calavera 3c82fad441 Extract container store from the daemon.
- Generalize in an interface.
- Stop abusing of List for everything.

Signed-off-by: David Calavera <david.calavera@gmail.com>
2016-01-19 13:21:41 -05:00

91 lines
1.8 KiB
Go

package container
import "sync"
// memoryStore implements a Store in memory.
type memoryStore struct {
s map[string]*Container
sync.Mutex
}
// NewMemoryStore initializes a new memory store.
func NewMemoryStore() Store {
return &memoryStore{
s: make(map[string]*Container),
}
}
// Add appends a new container to the memory store.
// It overrides the id if it existed before.
func (c *memoryStore) Add(id string, cont *Container) {
c.Lock()
c.s[id] = cont
c.Unlock()
}
// Get returns a container from the store by id.
func (c *memoryStore) Get(id string) *Container {
c.Lock()
res := c.s[id]
c.Unlock()
return res
}
// Delete removes a container from the store by id.
func (c *memoryStore) Delete(id string) {
c.Lock()
delete(c.s, id)
c.Unlock()
}
// List returns a sorted list of containers from the store.
// The containers are ordered by creation date.
func (c *memoryStore) List() []*Container {
containers := new(History)
c.Lock()
for _, cont := range c.s {
containers.Add(cont)
}
c.Unlock()
containers.sort()
return *containers
}
// Size returns the number of containers in the store.
func (c *memoryStore) Size() int {
c.Lock()
defer c.Unlock()
return len(c.s)
}
// First returns the first container found in the store by a given filter.
func (c *memoryStore) First(filter StoreFilter) *Container {
c.Lock()
defer c.Unlock()
for _, cont := range c.s {
if filter(cont) {
return cont
}
}
return nil
}
// ApplyAll calls the reducer function with every container in the store.
// This operation is asyncronous in the memory store.
func (c *memoryStore) ApplyAll(apply StoreReducer) {
c.Lock()
defer c.Unlock()
wg := new(sync.WaitGroup)
for _, cont := range c.s {
wg.Add(1)
go func(container *Container) {
apply(container)
wg.Done()
}(cont)
}
wg.Wait()
}
var _ Store = &memoryStore{}