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attestation_container_helper.go
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/
attestation_container_helper.go
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package db
import (
ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
"github.com/prysmaticlabs/go-bitfield"
)
// Contains returns true if the attestation bits are fully contained in some attestations.
func (ac *AttestationContainer) Contains(att *ethpb.Attestation) bool {
all := bitfield.NewBitlist(att.AggregationBits.Len())
for _, sp := range ac.SignaturePairs {
if all.Len() != sp.AggregationBits.Len() {
continue
}
all = all.Or(sp.AggregationBits)
}
return all.Contains(att.AggregationBits)
}
// ToAttestations converts an attestationContainer signature pairs to full attestations.
func (ac *AttestationContainer) ToAttestations() []*ethpb.Attestation {
if ac == nil {
return nil
}
atts := make([]*ethpb.Attestation, len(ac.SignaturePairs))
for i, sp := range ac.SignaturePairs {
atts[i] = ðpb.Attestation{
Data: ac.Data,
AggregationBits: sp.AggregationBits,
Signature: sp.Signature,
}
}
return atts
}
// InsertAttestation if bitfields do not exist already.
func (ac *AttestationContainer) InsertAttestation(att *ethpb.Attestation) {
sigPairsNotEclipsed := make([]*AttestationContainer_SignaturePair, 0, len(ac.SignaturePairs))
// if att is fully contained in some existing bitfields, do nothing.
if ac.Contains(att) {
return
}
for _, sp := range ac.SignaturePairs {
// filter any existing signature pairs that are fully contained within
// the new attestation.
if !att.AggregationBits.Contains(sp.AggregationBits) {
sigPairsNotEclipsed = append(sigPairsNotEclipsed, sp)
}
}
ac.SignaturePairs = append(sigPairsNotEclipsed, &AttestationContainer_SignaturePair{
AggregationBits: att.AggregationBits,
Signature: att.Signature,
})
}