forked from TrueCloudLab/frostfs-node
90 lines
2 KiB
Go
90 lines
2 KiB
Go
package tree
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/sha256"
|
|
"fmt"
|
|
"sync"
|
|
|
|
"github.com/hashicorp/golang-lru/simplelru"
|
|
"github.com/nspcc-dev/neofs-node/pkg/core/container"
|
|
"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/placement"
|
|
cidSDK "github.com/nspcc-dev/neofs-sdk-go/container/id"
|
|
netmapSDK "github.com/nspcc-dev/neofs-sdk-go/netmap"
|
|
)
|
|
|
|
type containerCache struct {
|
|
sync.Mutex
|
|
nm *netmapSDK.NetMap
|
|
lru *simplelru.LRU
|
|
}
|
|
|
|
func (c *containerCache) init(size int) {
|
|
c.lru, _ = simplelru.NewLRU(size, nil) // no error, size is positive
|
|
}
|
|
|
|
type containerCacheItem struct {
|
|
cnr *container.Container
|
|
local int
|
|
nodes []netmapSDK.NodeInfo
|
|
}
|
|
|
|
const defaultContainerCacheSize = 10
|
|
|
|
// getContainerNodes returns nodes in the container and a position of local key in the list.
|
|
func (s *Service) getContainerNodes(cid cidSDK.ID) ([]netmapSDK.NodeInfo, int, error) {
|
|
nm, err := s.nmSource.GetNetMap(0)
|
|
if err != nil {
|
|
return nil, -1, fmt.Errorf("can't get netmap: %w", err)
|
|
}
|
|
|
|
cnr, err := s.cnrSource.Get(cid)
|
|
if err != nil {
|
|
return nil, -1, fmt.Errorf("can't get container: %w", err)
|
|
}
|
|
|
|
cidStr := cid.String()
|
|
|
|
s.containerCache.Lock()
|
|
if s.containerCache.nm != nm {
|
|
s.containerCache.lru.Purge()
|
|
} else if v, ok := s.containerCache.lru.Get(cidStr); ok {
|
|
item := v.(containerCacheItem)
|
|
if item.cnr == cnr {
|
|
s.containerCache.Unlock()
|
|
return item.nodes, item.local, nil
|
|
}
|
|
}
|
|
s.containerCache.Unlock()
|
|
|
|
policy := cnr.Value.PlacementPolicy()
|
|
|
|
rawCID := make([]byte, sha256.Size)
|
|
cid.Encode(rawCID)
|
|
|
|
cntNodes, err := nm.ContainerNodes(policy, rawCID)
|
|
if err != nil {
|
|
return nil, -1, err
|
|
}
|
|
|
|
nodes := placement.FlattenNodes(cntNodes)
|
|
|
|
localPos := -1
|
|
for i := range nodes {
|
|
if bytes.Equal(nodes[i].PublicKey(), s.rawPub) {
|
|
localPos = i
|
|
break
|
|
}
|
|
}
|
|
|
|
s.containerCache.Lock()
|
|
s.containerCache.nm = nm
|
|
s.containerCache.lru.Add(cidStr, containerCacheItem{
|
|
cnr: cnr,
|
|
local: localPos,
|
|
nodes: nodes,
|
|
})
|
|
s.containerCache.Unlock()
|
|
|
|
return nodes, localPos, err
|
|
}
|