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https://gitlab.com/pulsechaincom/prysm-pulse.git
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02966e64d8
* Add Wrapper to LRU Cache to handle Invalid Parameters #9461 * Regenerate BUILD.bazel and simplify tests using lru.Cache * Fix: fuzz_exports.go build error * Fix: block_fuzz.go * Revert lru.Cache interface * Remove redundant err check in pending_attestations_queue_test.go * Add tests for lru wrapper * Use lru package in prysm/shared instead of lruwrpr * Fix: goimports * Fix: BUILD.bazel Co-authored-by: Nishant Das <nishdas93@gmail.com>
70 lines
2.2 KiB
Go
70 lines
2.2 KiB
Go
package cache
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import (
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lru "github.com/hashicorp/golang-lru"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promauto"
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types "github.com/prysmaticlabs/eth2-types"
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lruwrpr "github.com/prysmaticlabs/prysm/shared/lru"
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)
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var (
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// validatorsCacheSize defines the max number of validators public keys the cache can hold.
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validatorsCacheSize = 300000
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// Metrics for the validator cache.
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validatorsCacheHit = promauto.NewCounter(prometheus.CounterOpts{
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Name: "validators_cache_hit",
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Help: "The total number of cache hits on the validators cache.",
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})
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validatorsCacheMiss = promauto.NewCounter(prometheus.CounterOpts{
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Name: "validators_cache_miss",
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Help: "The total number of cache misses on the validators cache.",
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})
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)
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// PublicKeyCache is used to store the public keys needed for signature verification.
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type PublicKeyCache struct {
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cache *lru.Cache
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}
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// NewPublicKeyCache initializes the cache.
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func NewPublicKeyCache(size int, onEvicted func(key interface{}, value interface{})) (*PublicKeyCache, error) {
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if size != 0 {
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validatorsCacheSize = size
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}
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return &PublicKeyCache{cache: lruwrpr.NewWithEvict(validatorsCacheSize, onEvicted)}, nil
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}
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// Get returns an ok bool and the cached value for the requested validator id key, if any.
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func (c *PublicKeyCache) Get(validatorIndex types.ValidatorIndex) ([]byte, bool) {
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item, exists := c.cache.Get(validatorIndex)
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if exists && item != nil {
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validatorsCacheHit.Inc()
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return item.([]byte), true
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}
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validatorsCacheMiss.Inc()
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return nil, false
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}
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// Set the response in the cache.
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func (c *PublicKeyCache) Set(validatorIndex types.ValidatorIndex, publicKey []byte) {
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_ = c.cache.Add(validatorIndex, publicKey)
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}
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// Delete removes a validator id from the cache and returns if it existed or not.
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// Performs the onEviction function before removal.
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func (c *PublicKeyCache) Delete(validatorIndex types.ValidatorIndex) bool {
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return c.cache.Remove(validatorIndex)
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}
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// Has returns true if the key exists in the cache.
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func (c *PublicKeyCache) Has(validatorIndex types.ValidatorIndex) bool {
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return c.cache.Contains(validatorIndex)
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}
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// Clear removes all keys from the ValidatorCache.
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func (c *PublicKeyCache) Clear() {
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c.cache.Purge()
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}
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