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Payload Attestation Sync package changes
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| package cache | ||
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| import ( | ||
| "errors" | ||
| "sync" | ||
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| "github.com/prysmaticlabs/prysm/v5/consensus-types/primitives" | ||
| "github.com/prysmaticlabs/prysm/v5/crypto/bls" | ||
| "github.com/prysmaticlabs/prysm/v5/encoding/bytesutil" | ||
| eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1" | ||
| ) | ||
|
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| var errNilPayloadAttestationMessage = errors.New("nil Payload Attestation Message") | ||
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| // PayloadAttestationCache keeps a map of all the PTC votes that were seen, | ||
| // already aggregated. The key is the beacon block root. | ||
| type PayloadAttestationCache struct { | ||
| root [32]byte | ||
| attestations [primitives.PAYLOAD_INVALID_STATUS]*eth.PayloadAttestation | ||
| sync.Mutex | ||
| } | ||
|
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| // Seen returns true if a vote for the given Beacon Block Root has already been processed | ||
| // for this Payload Timeliness Committee index. This will return true even if | ||
| // the Payload status differs. | ||
| func (p *PayloadAttestationCache) Seen(root [32]byte, idx uint64) bool { | ||
| p.Lock() | ||
| defer p.Unlock() | ||
| if p.root != root { | ||
| return false | ||
| } | ||
| for _, agg := range p.attestations { | ||
| if agg == nil { | ||
| continue | ||
| } | ||
| if agg.AggregationBits.BitAt(idx) { | ||
| return true | ||
| } | ||
| } | ||
| return false | ||
| } | ||
|
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| // messageToPayloadAttestation creates a PayloadAttestation with a single | ||
| // aggregated bit from the passed PayloadAttestationMessage | ||
| func messageToPayloadAttestation(att *eth.PayloadAttestationMessage, idx uint64) *eth.PayloadAttestation { | ||
| bits := primitives.NewPayloadAttestationAggregationBits() | ||
| bits.SetBitAt(idx, true) | ||
| data := ð.PayloadAttestationData{ | ||
| BeaconBlockRoot: bytesutil.SafeCopyBytes(att.Data.BeaconBlockRoot), | ||
| Slot: att.Data.Slot, | ||
| PayloadStatus: att.Data.PayloadStatus, | ||
| } | ||
| return ð.PayloadAttestation{ | ||
| AggregationBits: bits, | ||
| Data: data, | ||
| Signature: bytesutil.SafeCopyBytes(att.Signature), | ||
| } | ||
| } | ||
|
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| // aggregateSigFromMessage returns the aggregated signature from a Payload | ||
| // Attestation by adding the passed signature in the PayloadAttestationMessage, | ||
| // no signature validation is performed. | ||
| func aggregateSigFromMessage(aggregated *eth.PayloadAttestation, message *eth.PayloadAttestationMessage) ([]byte, error) { | ||
| aggSig, err := bls.SignatureFromBytesNoValidation(aggregated.Signature) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| sig, err := bls.SignatureFromBytesNoValidation(message.Signature) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return bls.AggregateSignatures([]bls.Signature{aggSig, sig}).Marshal(), nil | ||
| } | ||
|
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| // Add adds a PayloadAttestationMessage to the internal cache of aggregated | ||
| // PayloadAttestations. | ||
| // If the index has already been seen for this attestation status the function does nothing. | ||
| // If the root is not the cached root, the function will clear the previous cache | ||
| // This function assumes that the message has already been validated. In | ||
| // particular that the signature is valid and that the block root corresponds to | ||
| // the given slot in the attestation data. | ||
| func (p *PayloadAttestationCache) Add(att *eth.PayloadAttestationMessage, idx uint64) error { | ||
| if att == nil || att.Data == nil || att.Data.BeaconBlockRoot == nil { | ||
| return errNilPayloadAttestationMessage | ||
| } | ||
| p.Lock() | ||
| defer p.Unlock() | ||
| root := [32]byte(att.Data.BeaconBlockRoot) | ||
| if p.root != root { | ||
| p.root = root | ||
| p.attestations = [primitives.PAYLOAD_INVALID_STATUS]*eth.PayloadAttestation{} | ||
| } | ||
| agg := p.attestations[att.Data.PayloadStatus] | ||
| if agg == nil { | ||
| p.attestations[att.Data.PayloadStatus] = messageToPayloadAttestation(att, idx) | ||
| return nil | ||
| } | ||
| if agg.AggregationBits.BitAt(idx) { | ||
| return nil | ||
| } | ||
| sig, err := aggregateSigFromMessage(agg, att) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| agg.Signature = sig | ||
| agg.AggregationBits.SetBitAt(idx, true) | ||
| return nil | ||
| } | ||
|
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| // Clear clears the internal map | ||
| func (p *PayloadAttestationCache) Clear() { | ||
| p.Lock() | ||
| defer p.Unlock() | ||
| p.root = [32]byte{} | ||
| p.attestations = [primitives.PAYLOAD_INVALID_STATUS]*eth.PayloadAttestation{} | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| package cache | ||
|
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| import ( | ||
| "testing" | ||
|
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| "github.com/prysmaticlabs/prysm/v5/consensus-types/primitives" | ||
| "github.com/prysmaticlabs/prysm/v5/crypto/bls" | ||
| "github.com/prysmaticlabs/prysm/v5/encoding/bytesutil" | ||
| eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1" | ||
| "github.com/prysmaticlabs/prysm/v5/testing/require" | ||
| ) | ||
|
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| func TestPayloadAttestationCache(t *testing.T) { | ||
| p := &PayloadAttestationCache{} | ||
|
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| //Test Has seen | ||
| root := [32]byte{'r'} | ||
| idx := uint64(5) | ||
| require.Equal(t, false, p.Seen(root, idx)) | ||
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| // Test Add | ||
| msg := ð.PayloadAttestationMessage{ | ||
| Signature: bls.NewAggregateSignature().Marshal(), | ||
| Data: ð.PayloadAttestationData{ | ||
| BeaconBlockRoot: root[:], | ||
| Slot: 1, | ||
| PayloadStatus: primitives.PAYLOAD_PRESENT, | ||
| }, | ||
| } | ||
|
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| // Add new root | ||
| require.NoError(t, p.Add(msg, idx)) | ||
| require.Equal(t, true, p.Seen(root, idx)) | ||
| require.Equal(t, root, p.root) | ||
| att := p.attestations[primitives.PAYLOAD_PRESENT] | ||
| indices := att.AggregationBits.BitIndices() | ||
| require.DeepEqual(t, []int{int(idx)}, indices) | ||
| singleSig := bytesutil.SafeCopyBytes(msg.Signature) | ||
| require.DeepEqual(t, singleSig, att.Signature) | ||
|
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| // Test Seen | ||
| require.Equal(t, true, p.Seen(root, idx)) | ||
| require.Equal(t, false, p.Seen(root, idx+1)) | ||
|
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| // Add another attestation on the same data | ||
| msg2 := ð.PayloadAttestationMessage{ | ||
| Signature: bls.NewAggregateSignature().Marshal(), | ||
| Data: att.Data, | ||
| } | ||
| idx2 := uint64(7) | ||
| require.NoError(t, p.Add(msg2, idx2)) | ||
| att = p.attestations[primitives.PAYLOAD_PRESENT] | ||
| indices = att.AggregationBits.BitIndices() | ||
| require.DeepEqual(t, []int{int(idx), int(idx2)}, indices) | ||
| require.DeepNotEqual(t, att.Signature, msg.Signature) | ||
|
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| // Try again the same index | ||
| require.NoError(t, p.Add(msg2, idx2)) | ||
| att2 := p.attestations[primitives.PAYLOAD_PRESENT] | ||
| indices = att.AggregationBits.BitIndices() | ||
| require.DeepEqual(t, []int{int(idx), int(idx2)}, indices) | ||
| require.DeepEqual(t, att, att2) | ||
|
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| // Test Seen | ||
| require.Equal(t, true, p.Seen(root, idx2)) | ||
| require.Equal(t, false, p.Seen(root, idx2+1)) | ||
|
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| // Add another payload status for a different payload status | ||
| msg3 := ð.PayloadAttestationMessage{ | ||
| Signature: bls.NewAggregateSignature().Marshal(), | ||
| Data: ð.PayloadAttestationData{ | ||
| BeaconBlockRoot: root[:], | ||
| Slot: 1, | ||
| PayloadStatus: primitives.PAYLOAD_WITHHELD, | ||
| }, | ||
| } | ||
| idx3 := uint64(17) | ||
|
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| require.NoError(t, p.Add(msg3, idx3)) | ||
| att3 := p.attestations[primitives.PAYLOAD_WITHHELD] | ||
| indices3 := att3.AggregationBits.BitIndices() | ||
| require.DeepEqual(t, []int{int(idx3)}, indices3) | ||
| require.DeepEqual(t, singleSig, att3.Signature) | ||
|
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| // Add a different root | ||
| root2 := [32]byte{'s'} | ||
| msg.Data.BeaconBlockRoot = root2[:] | ||
| require.NoError(t, p.Add(msg, idx)) | ||
| require.Equal(t, root2, p.root) | ||
| require.Equal(t, true, p.Seen(root2, idx)) | ||
| require.Equal(t, false, p.Seen(root, idx)) | ||
| att = p.attestations[primitives.PAYLOAD_PRESENT] | ||
| indices = att.AggregationBits.BitIndices() | ||
| require.DeepEqual(t, []int{int(idx)}, indices) | ||
| } |
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