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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,122 @@ | ||
| package structs | ||
|
|
||
| // | ||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "strconv" | ||
|
|
||
| "github.com/ethereum/go-ethereum/common/hexutil" | ||
| "github.com/pkg/errors" | ||
| v1 "github.com/prysmaticlabs/prysm/v5/proto/eth/v1" | ||
| v2 "github.com/prysmaticlabs/prysm/v5/proto/eth/v2" | ||
| "github.com/prysmaticlabs/prysm/v5/proto/migration" | ||
| ) | ||
|
|
||
| func LightClientUpdateFromConsensus(update *v2.LightClientUpdate) (*LightClientUpdate, error) { | ||
| attestedHeader, err := lightClientHeaderContainerToJSON(update.AttestedHeader) | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "could not marshal attested light client header") | ||
| } | ||
| finalizedHeader, err := lightClientHeaderContainerToJSON(update.FinalizedHeader) | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "could not marshal finalized light client header") | ||
| } | ||
|
|
||
| return &LightClientUpdate{ | ||
| AttestedHeader: attestedHeader, | ||
| NextSyncCommittee: SyncCommitteeFromConsensus(migration.V2SyncCommitteeToV1Alpha1(update.NextSyncCommittee)), | ||
| NextSyncCommitteeBranch: branchToJSON(update.NextSyncCommitteeBranch), | ||
| FinalizedHeader: finalizedHeader, | ||
| FinalityBranch: branchToJSON(update.FinalityBranch), | ||
| SyncAggregate: syncAggregateToJSON(update.SyncAggregate), | ||
| SignatureSlot: strconv.FormatUint(uint64(update.SignatureSlot), 10), | ||
| }, nil | ||
| } | ||
|
|
||
| func LightClientFinalityUpdateFromConsensus(update *v2.LightClientFinalityUpdate) (*LightClientFinalityUpdate, error) { | ||
| attestedHeader, err := lightClientHeaderContainerToJSON(update.AttestedHeader) | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "could not marshal attested light client header") | ||
| } | ||
| finalizedHeader, err := lightClientHeaderContainerToJSON(update.FinalizedHeader) | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "could not marshal finalized light client header") | ||
| } | ||
|
|
||
| return &LightClientFinalityUpdate{ | ||
| AttestedHeader: attestedHeader, | ||
| FinalizedHeader: finalizedHeader, | ||
| FinalityBranch: branchToJSON(update.FinalityBranch), | ||
| SyncAggregate: syncAggregateToJSON(update.SyncAggregate), | ||
| SignatureSlot: strconv.FormatUint(uint64(update.SignatureSlot), 10), | ||
| }, nil | ||
| } | ||
|
|
||
| func LightClientOptimisticUpdateFromConsensus(update *v2.LightClientOptimisticUpdate) (*LightClientOptimisticUpdate, error) { | ||
| attestedHeader, err := lightClientHeaderContainerToJSON(update.AttestedHeader) | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "could not marshal attested light client header") | ||
| } | ||
|
|
||
| return &LightClientOptimisticUpdate{ | ||
| AttestedHeader: attestedHeader, | ||
| SyncAggregate: syncAggregateToJSON(update.SyncAggregate), | ||
| SignatureSlot: strconv.FormatUint(uint64(update.SignatureSlot), 10), | ||
| }, nil | ||
| } | ||
|
|
||
| func branchToJSON(branchBytes [][]byte) []string { | ||
| if branchBytes == nil { | ||
| return nil | ||
| } | ||
| branch := make([]string, len(branchBytes)) | ||
| for i, root := range branchBytes { | ||
| branch[i] = hexutil.Encode(root) | ||
| } | ||
| return branch | ||
| } | ||
|
|
||
| func syncAggregateToJSON(input *v1.SyncAggregate) *SyncAggregate { | ||
| return &SyncAggregate{ | ||
| SyncCommitteeBits: hexutil.Encode(input.SyncCommitteeBits), | ||
| SyncCommitteeSignature: hexutil.Encode(input.SyncCommitteeSignature), | ||
| } | ||
| } | ||
|
|
||
| func lightClientHeaderContainerToJSON(container *v2.LightClientHeaderContainer) (json.RawMessage, error) { | ||
| beacon, err := container.GetBeacon() | ||
| if err != nil { | ||
| return nil, errors.Wrap(err, "could not get beacon block header") | ||
| } | ||
|
|
||
| var header any | ||
|
|
||
| switch t := (container.Header).(type) { | ||
| case *v2.LightClientHeaderContainer_HeaderAltair: | ||
| header = &LightClientHeader{Beacon: BeaconBlockHeaderFromConsensus(migration.V1HeaderToV1Alpha1(beacon))} | ||
| case *v2.LightClientHeaderContainer_HeaderCapella: | ||
| execution, err := ExecutionPayloadHeaderCapellaFromConsensus(t.HeaderCapella.Execution) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| header = &LightClientHeaderCapella{ | ||
| Beacon: BeaconBlockHeaderFromConsensus(migration.V1HeaderToV1Alpha1(beacon)), | ||
| Execution: execution, | ||
| ExecutionBranch: branchToJSON(t.HeaderCapella.ExecutionBranch), | ||
| } | ||
| case *v2.LightClientHeaderContainer_HeaderDeneb: | ||
| execution, err := ExecutionPayloadHeaderDenebFromConsensus(t.HeaderDeneb.Execution) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| header = &LightClientHeaderDeneb{ | ||
| Beacon: BeaconBlockHeaderFromConsensus(migration.V1HeaderToV1Alpha1(beacon)), | ||
| Execution: execution, | ||
| ExecutionBranch: branchToJSON(t.HeaderDeneb.ExecutionBranch), | ||
| } | ||
| default: | ||
| return nil, fmt.Errorf("unsupported header type %T", t) | ||
| } | ||
|
|
||
| return json.Marshal(header) | ||
| } |
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