prysm-pulse/beacon-chain/state/stategen/cacher.go

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package stategen
import (
"github.com/pkg/errors"
"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
)
var ErrNotInCache = errors.New("state not found in cache")
type CachedGetter interface {
ByBlockRoot([32]byte) (state.BeaconState, error)
}
type CombinedCache struct {
getters []CachedGetter
}
func (c CombinedCache) ByBlockRoot(r [32]byte) (state.BeaconState, error) {
for _, getter := range c.getters {
st, err := getter.ByBlockRoot(r)
if err == nil {
return st, nil
}
if errors.Is(err, ErrNotInCache) {
continue
}
return nil, err
}
return nil, ErrNotInCache
}
var _ CachedGetter = &CombinedCache{}