frostfs-s3-gw/api/cache/frostfsid.go

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package cache
import (
"fmt"
"time"
"git.frostfs.info/TrueCloudLab/frostfs-contract/frostfsid/client"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/logs"
"github.com/bluele/gcache"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/util"
"go.uber.org/zap"
)
// FrostfsIDCache provides lru cache for frostfsid contract.
type FrostfsIDCache struct {
cache gcache.Cache
logger *zap.Logger
}
const (
// DefaultFrostfsIDCacheSize is a default maximum number of entries in cache.
DefaultFrostfsIDCacheSize = 1e4
// DefaultFrostfsIDCacheLifetime is a default lifetime of entries in cache.
DefaultFrostfsIDCacheLifetime = time.Minute
)
// DefaultFrostfsIDConfig returns new default cache expiration values.
func DefaultFrostfsIDConfig(logger *zap.Logger) *Config {
return &Config{
Size: DefaultFrostfsIDCacheSize,
Lifetime: DefaultFrostfsIDCacheLifetime,
Logger: logger,
}
}
// NewFrostfsIDCache creates an object of FrostfsIDCache.
func NewFrostfsIDCache(config *Config) *FrostfsIDCache {
gc := gcache.New(config.Size).LRU().Expiration(config.Lifetime).Build()
return &FrostfsIDCache{cache: gc, logger: config.Logger}
}
// GetSubject returns a cached client.SubjectExtended. Returns nil if value is missing.
func (c *FrostfsIDCache) GetSubject(key util.Uint160) *client.SubjectExtended {
return get[client.SubjectExtended](c, key)
}
// PutSubject puts a client.SubjectExtended to cache.
func (c *FrostfsIDCache) PutSubject(key util.Uint160, subject *client.SubjectExtended) error {
return c.cache.Set(key, subject)
}
// GetUserKey returns a cached *keys.PublicKey. Returns nil if value is missing.
func (c *FrostfsIDCache) GetUserKey(ns, name string) *keys.PublicKey {
return get[keys.PublicKey](c, ns+"/"+name)
}
// PutUserKey puts a client.SubjectExtended to cache.
func (c *FrostfsIDCache) PutUserKey(ns, name string, userKey *keys.PublicKey) error {
return c.cache.Set(ns+"/"+name, userKey)
}
func get[T any](c *FrostfsIDCache, key any) *T {
entry, err := c.cache.Get(key)
if err != nil {
return nil
}
result, ok := entry.(*T)
if !ok {
c.logger.Warn(logs.InvalidCacheEntryType, zap.String("actual", fmt.Sprintf("%T", entry)),
zap.String("expected", fmt.Sprintf("%T", result)))
return nil
}
return result
}