/
seen_bits.go
63 lines (57 loc) · 1.44 KB
/
seen_bits.go
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package kv
import (
"github.com/patrickmn/go-cache"
"github.com/pkg/errors"
"github.com/prysmaticlabs/go-bitfield"
ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
)
func (c *AttCaches) insertSeenBit(att *ethpb.Attestation) error {
r, err := hashFn(att.Data)
if err != nil {
return err
}
v, ok := c.seenAtt.Get(string(r[:]))
if ok {
seenBits, ok := v.([]bitfield.Bitlist)
if !ok {
return errors.New("could not convert to bitlist type")
}
alreadyExists := false
for _, bit := range seenBits {
if c, err := bit.Contains(att.AggregationBits); err != nil {
return err
} else if c {
alreadyExists = true
break
}
}
if !alreadyExists {
seenBits = append(seenBits, att.AggregationBits)
}
c.seenAtt.Set(string(r[:]), seenBits, cache.DefaultExpiration /* one epoch */)
return nil
}
c.seenAtt.Set(string(r[:]), []bitfield.Bitlist{att.AggregationBits}, cache.DefaultExpiration /* one epoch */)
return nil
}
func (c *AttCaches) hasSeenBit(att *ethpb.Attestation) (bool, error) {
r, err := hashFn(att.Data)
if err != nil {
return false, err
}
v, ok := c.seenAtt.Get(string(r[:]))
if ok {
seenBits, ok := v.([]bitfield.Bitlist)
if !ok {
return false, errors.New("could not convert to bitlist type")
}
for _, bit := range seenBits {
if c, err := bit.Contains(att.AggregationBits); err != nil {
return false, err
} else if c {
return true, nil
}
}
}
return false, nil
}