f15e6e888f
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
327 lines
7.6 KiB
Go
327 lines
7.6 KiB
Go
package main
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import (
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"time"
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lru "github.com/hashicorp/golang-lru"
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"github.com/nspcc-dev/neofs-node/pkg/core/container"
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"github.com/nspcc-dev/neofs-node/pkg/core/netmap"
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cntClient "github.com/nspcc-dev/neofs-node/pkg/morph/client/container"
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"github.com/nspcc-dev/neofs-node/pkg/services/object/acl/eacl"
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containerSDK "github.com/nspcc-dev/neofs-sdk-go/container"
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cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
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eaclSDK "github.com/nspcc-dev/neofs-sdk-go/eacl"
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netmapSDK "github.com/nspcc-dev/neofs-sdk-go/netmap"
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"github.com/nspcc-dev/neofs-sdk-go/owner"
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)
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type netValueReader func(interface{}) (interface{}, error)
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type valueWithTime struct {
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v interface{}
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t time.Time
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}
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// entity that provides TTL cache interface.
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type ttlNetCache struct {
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ttl time.Duration
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sz int
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cache *lru.Cache
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netRdr netValueReader
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}
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// complicates netValueReader with TTL caching mechanism.
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func newNetworkTTLCache(sz int, ttl time.Duration, netRdr netValueReader) *ttlNetCache {
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cache, err := lru.New(sz)
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fatalOnErr(err)
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return &ttlNetCache{
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ttl: ttl,
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sz: sz,
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cache: cache,
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netRdr: netRdr,
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}
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}
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// reads value by the key.
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//
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// updates the value from the network on cache miss or by TTL.
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//
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// returned value should not be modified.
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func (c *ttlNetCache) get(key interface{}) (interface{}, error) {
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val, ok := c.cache.Peek(key)
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if ok {
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valWithTime := val.(*valueWithTime)
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if time.Since(valWithTime.t) < c.ttl {
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return valWithTime.v, nil
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}
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c.cache.Remove(key)
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}
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val, err := c.netRdr(key)
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if err != nil {
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return nil, err
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}
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c.cache.Add(key, &valueWithTime{
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v: val,
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t: time.Now(),
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})
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return val, nil
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}
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func (c *ttlNetCache) remove(key interface{}) {
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c.cache.Remove(key)
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}
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func (c *ttlNetCache) keys() []interface{} {
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return c.cache.Keys()
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}
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// entity that provides LRU cache interface.
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type lruNetCache struct {
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cache *lru.Cache
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netRdr netValueReader
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}
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// newNetworkLRUCache returns wrapper over netValueReader with LRU cache.
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func newNetworkLRUCache(sz int, netRdr netValueReader) *lruNetCache {
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cache, err := lru.New(sz)
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fatalOnErr(err)
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return &lruNetCache{
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cache: cache,
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netRdr: netRdr,
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}
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}
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// reads value by the key.
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//
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// updates the value from the network on cache miss.
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//
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// returned value should not be modified.
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func (c *lruNetCache) get(key interface{}) (interface{}, error) {
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val, ok := c.cache.Get(key)
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if ok {
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return val, nil
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}
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val, err := c.netRdr(key)
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if err != nil {
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return nil, err
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}
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c.cache.Add(key, val)
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return val, nil
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}
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// wrapper over TTL cache of values read from the network
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// that implements container storage.
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type ttlContainerStorage ttlNetCache
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func newCachedContainerStorage(v container.Source) *ttlContainerStorage {
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const (
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containerCacheSize = 100
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containerCacheTTL = 30 * time.Second
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)
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lruCnrCache := newNetworkTTLCache(containerCacheSize, containerCacheTTL, func(key interface{}) (interface{}, error) {
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var id cid.ID
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err := id.DecodeString(key.(string))
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if err != nil {
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return nil, err
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}
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return v.Get(&id)
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})
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return (*ttlContainerStorage)(lruCnrCache)
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}
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// Get returns container value from the cache. If value is missing in the cache
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// or expired, then it returns value from side chain and updates the cache.
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func (s *ttlContainerStorage) Get(cid *cid.ID) (*containerSDK.Container, error) {
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val, err := (*ttlNetCache)(s).get(cid.String())
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if err != nil {
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return nil, err
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}
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return val.(*containerSDK.Container), nil
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}
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type ttlEACLStorage ttlNetCache
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func newCachedEACLStorage(v eacl.Source) *ttlEACLStorage {
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const (
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eaclCacheSize = 100
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eaclCacheTTL = 30 * time.Second
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)
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lruCnrCache := newNetworkTTLCache(eaclCacheSize, eaclCacheTTL, func(key interface{}) (interface{}, error) {
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var id cid.ID
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err := id.DecodeString(key.(string))
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if err != nil {
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return nil, err
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}
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return v.GetEACL(&id)
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})
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return (*ttlEACLStorage)(lruCnrCache)
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}
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// GetEACL returns eACL value from the cache. If value is missing in the cache
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// or expired, then it returns value from side chain and updates cache.
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func (s *ttlEACLStorage) GetEACL(cid *cid.ID) (*eaclSDK.Table, error) {
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val, err := (*ttlNetCache)(s).get(cid.String())
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if err != nil {
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return nil, err
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}
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return val.(*eaclSDK.Table), nil
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}
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// InvalidateEACL removes cached eACL value.
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func (s *ttlEACLStorage) InvalidateEACL(cid *cid.ID) {
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(*ttlNetCache)(s).remove(cid.String())
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}
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type lruNetmapSource struct {
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netState netmap.State
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cache *lruNetCache
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}
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func newCachedNetmapStorage(s netmap.State, v netmap.Source) netmap.Source {
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const netmapCacheSize = 10
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lruNetmapCache := newNetworkLRUCache(netmapCacheSize, func(key interface{}) (interface{}, error) {
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return v.GetNetMapByEpoch(key.(uint64))
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})
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return &lruNetmapSource{
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netState: s,
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cache: lruNetmapCache,
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}
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}
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func (s *lruNetmapSource) GetNetMap(diff uint64) (*netmapSDK.Netmap, error) {
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return s.getNetMapByEpoch(s.netState.CurrentEpoch() - diff)
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}
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func (s *lruNetmapSource) GetNetMapByEpoch(epoch uint64) (*netmapSDK.Netmap, error) {
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return s.getNetMapByEpoch(epoch)
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}
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func (s *lruNetmapSource) getNetMapByEpoch(epoch uint64) (*netmapSDK.Netmap, error) {
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val, err := s.cache.get(epoch)
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if err != nil {
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return nil, err
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}
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return val.(*netmapSDK.Netmap), nil
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}
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func (s *lruNetmapSource) Epoch() (uint64, error) {
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return s.netState.CurrentEpoch(), nil
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}
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// wrapper over TTL cache of values read from the network
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// that implements container lister.
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type ttlContainerLister ttlNetCache
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func newCachedContainerLister(c *cntClient.Client) *ttlContainerLister {
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const (
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containerListerCacheSize = 100
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containerListerCacheTTL = 30 * time.Second
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)
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lruCnrListerCache := newNetworkTTLCache(containerListerCacheSize, containerListerCacheTTL, func(key interface{}) (interface{}, error) {
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var (
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id *owner.ID
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strID = key.(string)
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)
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if strID != "" {
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id = owner.NewID()
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err := id.Parse(strID)
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if err != nil {
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return nil, err
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}
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}
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return c.List(id)
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})
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return (*ttlContainerLister)(lruCnrListerCache)
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}
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// List returns list of container IDs from the cache. If list is missing in the
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// cache or expired, then it returns container IDs from side chain and updates
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// the cache.
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func (s *ttlContainerLister) List(id *owner.ID) ([]*cid.ID, error) {
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var str string
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if id != nil {
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str = id.String()
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}
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val, err := (*ttlNetCache)(s).get(str)
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if err != nil {
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return nil, err
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}
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return val.([]*cid.ID), nil
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}
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// InvalidateContainerList removes cached list of container IDs.
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func (s *ttlContainerLister) InvalidateContainerList(id *owner.ID) {
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(*ttlNetCache)(s).remove(id.String())
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}
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type cachedIRFetcher ttlNetCache
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func newCachedIRFetcher(f interface{ InnerRingKeys() ([][]byte, error) }) *cachedIRFetcher {
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const (
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irFetcherCacheSize = 1 // we intend to store only one value
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// Without the cache in the testnet we can see several hundred simultaneous
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// requests (neofs-node #1278), so limiting the request rate solves the issue.
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//
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// Exact request rate doesn't really matter because Inner Ring list update
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// happens extremely rare, but there is no side chain events for that as
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// for now (neofs-contract v0.15.0 notary disabled env) to monitor it.
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irFetcherCacheTTL = 30 * time.Second
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)
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irFetcherCache := newNetworkTTLCache(irFetcherCacheSize, irFetcherCacheTTL,
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func(key interface{}) (interface{}, error) {
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return f.InnerRingKeys()
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},
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)
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return (*cachedIRFetcher)(irFetcherCache)
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}
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// InnerRingKeys returns cached list of Inner Ring keys. If keys are missing in
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// the cache or expired, then it returns keys from side chain and updates
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// the cache.
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func (f *cachedIRFetcher) InnerRingKeys() ([][]byte, error) {
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val, err := (*ttlNetCache)(f).get("")
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if err != nil {
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return nil, err
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}
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return val.([][]byte), nil
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}
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