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https://gitlab.com/pulsechaincom/prysm-pulse.git
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31b1e6a7a8
* Add double vote detection to spanner * Add documentation * Update slasher/detection/attestations/spanner.go * Gazelle * Fix filter output
78 lines
2.9 KiB
Go
78 lines
2.9 KiB
Go
package attestations
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import (
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"context"
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"sync"
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ethpb "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
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"github.com/prysmaticlabs/prysm/slasher/detection/attestations/iface"
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"github.com/prysmaticlabs/prysm/slasher/detection/attestations/types"
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)
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var _ = iface.SpanDetector(&MockSpanDetector{})
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// MockSpanDetector defines a struct which can detect slashable
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// attestation offenses by tracking validator min-max
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// spans from validators.
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type MockSpanDetector struct {
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// Slice of epochs for valindex => min-max span.
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spans []map[uint64][2]uint16
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lock sync.RWMutex
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}
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// DetectSlashingForValidator mocks a detected slashing, if the sent attestation data
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// has a source epoch of 0, nothing will be detected. If the sent attestation data has a target
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// epoch equal to or greater than 6, it will "detect" a surrounded vote for the target epoch + 1.
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// If the target epoch is greater than 12, it will "detect" a surrounding vote for target epoch - 1.
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// Lastly, if it has a target epoch less than 6, it will "detect" a double vote for the target epoch.
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func (s *MockSpanDetector) DetectSlashingForValidator(
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ctx context.Context,
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validatorIdx uint64,
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attData *ethpb.AttestationData,
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) (*types.DetectionResult, error) {
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switch {
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// If the source epoch is 0, don't find a slashing.
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case attData.Source.Epoch == 0:
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return nil, nil
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// If the target epoch is > 12, it will "detect" a surrounded saved attestation.
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case attData.Target.Epoch > 12:
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return &types.DetectionResult{
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Kind: types.SurroundVote,
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SlashableEpoch: attData.Target.Epoch - 1,
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}, nil
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// If the target epoch is >= 6 < 12, it will "detect" a surrounding saved attestation.
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case attData.Target.Epoch >= 6:
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return &types.DetectionResult{
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Kind: types.SurroundVote,
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SlashableEpoch: attData.Target.Epoch + 1,
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}, nil
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// If the target epoch is less than 6, it will "detect" a double vote.
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default:
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return &types.DetectionResult{
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Kind: types.DoubleVote,
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SlashableEpoch: attData.Target.Epoch,
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}, nil
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}
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}
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// SpanForEpochByValidator returns the specific min-max span for a
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// validator index in a given epoch.
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func (s *MockSpanDetector) SpanForEpochByValidator(ctx context.Context, valIdx uint64, epoch uint64) ([3]uint16, error) {
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return [3]uint16{0, 0, 0}, nil
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}
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// ValidatorSpansByEpoch returns a list of all validator spans in a given epoch.
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func (s *MockSpanDetector) ValidatorSpansByEpoch(ctx context.Context, epoch uint64) map[uint64][3]uint16 {
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return make(map[uint64][3]uint16, 0)
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}
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// DeleteValidatorSpansByEpoch mocks the delete spans by epoch function.
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func (s *MockSpanDetector) DeleteValidatorSpansByEpoch(ctx context.Context, validatorIdx uint64, epoch uint64) error {
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return nil
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}
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// UpdateSpans is a mock for updating the spans for a given attestation..
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func (s *MockSpanDetector) UpdateSpans(ctx context.Context, att *ethpb.IndexedAttestation) error {
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return nil
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}
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