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