[2/5] light client http api (#12984)

Co-authored-by: Lizhang <lizhang@polymerlabs.org>

proto/eth/v2/beacon_lightclient.proto

@@ -33,15 +33,15 @@ option php_namespace = "Ethereum\\Eth\\v2";
 message LightClientBootstrap {
     v1.BeaconBlockHeader header = 1;
     SyncCommittee current_sync_committee = 2;
-    repeated bytes current_sync_committee_branch = 3 [(ethereum.eth.ext.ssz_size) = "current_sync_committee_branch.depth,32"];
+    repeated bytes current_sync_committee_branch = 3;
 }
 
 message LightClientUpdate {
     v1.BeaconBlockHeader attested_header = 1;
     SyncCommittee next_sync_committee = 2;
-    repeated bytes next_sync_committee_branch = 3 [(ethereum.eth.ext.ssz_size) = "next_sync_committee_branch.depth,32"];
+    repeated bytes next_sync_committee_branch = 3;
     v1.BeaconBlockHeader finalized_header = 4;
-    repeated bytes finality_branch = 5 [(ethereum.eth.ext.ssz_size) = "finality_branch.depth,32"];
+    repeated bytes finality_branch = 5;
     v1.SyncAggregate sync_aggregate = 6;
     uint64 signature_slot = 7 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/prysm/v4/consensus-types/primitives.Slot"];
 }
@@ -54,7 +54,7 @@ message LightClientFinalityUpdateWithVersion {
 message LightClientFinalityUpdate {
     v1.BeaconBlockHeader attested_header = 1;
     v1.BeaconBlockHeader finalized_header = 2;
-    repeated bytes finality_branch = 3 [(ethereum.eth.ext.ssz_size) = "finality_branch.depth,32"];
+    repeated bytes finality_branch = 3;
     v1.SyncAggregate sync_aggregate = 4;
     uint64 signature_slot = 5 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/prysm/v4/consensus-types/primitives.Slot"];
 }

proto/migration/v1alpha1_to_v1.go

@@ -2,12 +2,13 @@ package migration
 
 import (
 	"github.com/pkg/errors"
+	"google.golang.org/protobuf/proto"
+
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
 	ethpbv1 "github.com/prysmaticlabs/prysm/v4/proto/eth/v1"
 	ethpbalpha "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
-	"google.golang.org/protobuf/proto"
 )
 
 // BlockIfaceToV1BlockHeader converts a signed beacon block interface into a signed beacon block header.
@@ -170,17 +171,26 @@ func V1Alpha1SignedHeaderToV1(v1alpha1Hdr *ethpbalpha.SignedBeaconBlockHeader) *
 		return &ethpbv1.SignedBeaconBlockHeader{}
 	}
 	return &ethpbv1.SignedBeaconBlockHeader{
-		Message: &ethpbv1.BeaconBlockHeader{
-			Slot:          v1alpha1Hdr.Header.Slot,
-			ProposerIndex: v1alpha1Hdr.Header.ProposerIndex,
-			ParentRoot:    v1alpha1Hdr.Header.ParentRoot,
-			StateRoot:     v1alpha1Hdr.Header.StateRoot,
-			BodyRoot:      v1alpha1Hdr.Header.BodyRoot,
-		},
+		Message:   V1Alpha1HeaderToV1(v1alpha1Hdr.Header),
 		Signature: v1alpha1Hdr.Signature,
 	}
 }
 
+// V1Alpha1HeaderToV1 converts a v1alpha1 beacon block header to v1.
+func V1Alpha1HeaderToV1(v1alpha1Hdr *ethpbalpha.BeaconBlockHeader) *ethpbv1.BeaconBlockHeader {
+	if v1alpha1Hdr == nil {
+		return &ethpbv1.BeaconBlockHeader{}
+	}
+
+	return &ethpbv1.BeaconBlockHeader{
+		Slot:          v1alpha1Hdr.Slot,
+		ProposerIndex: v1alpha1Hdr.ProposerIndex,
+		ParentRoot:    v1alpha1Hdr.ParentRoot,
+		StateRoot:     v1alpha1Hdr.StateRoot,
+		BodyRoot:      v1alpha1Hdr.BodyRoot,
+	}
+}
+
 // V1SignedHeaderToV1Alpha1 converts a v1 signed beacon block header to v1alpha1.
 func V1SignedHeaderToV1Alpha1(v1Header *ethpbv1.SignedBeaconBlockHeader) *ethpbalpha.SignedBeaconBlockHeader {
 	if v1Header == nil || v1Header.Message == nil {
@@ -198,6 +208,20 @@ func V1SignedHeaderToV1Alpha1(v1Header *ethpbv1.SignedBeaconBlockHeader) *ethpba
 	}
 }
 
+// V1HeaderToV1Alpha1 converts a v1 beacon block header to v1alpha1.
+func V1HeaderToV1Alpha1(v1Header *ethpbv1.BeaconBlockHeader) *ethpbalpha.BeaconBlockHeader {
+	if v1Header == nil {
+		return &ethpbalpha.BeaconBlockHeader{}
+	}
+	return &ethpbalpha.BeaconBlockHeader{
+		Slot:          v1Header.Slot,
+		ProposerIndex: v1Header.ProposerIndex,
+		ParentRoot:    v1Header.ParentRoot,
+		StateRoot:     v1Header.StateRoot,
+		BodyRoot:      v1Header.BodyRoot,
+	}
+}
+
 // V1Alpha1ProposerSlashingToV1 converts a v1alpha1 proposer slashing to v1.
 func V1Alpha1ProposerSlashingToV1(v1alpha1Slashing *ethpbalpha.ProposerSlashing) *ethpbv1.ProposerSlashing {
 	if v1alpha1Slashing == nil {

proto/migration/v1alpha1_to_v2.go

@@ -2,6 +2,8 @@ package migration
 
 import (
 	"github.com/pkg/errors"
+	"google.golang.org/protobuf/proto"
+
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
 	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
@@ -10,7 +12,6 @@ import (
 	ethpbv1 "github.com/prysmaticlabs/prysm/v4/proto/eth/v1"
 	ethpbv2 "github.com/prysmaticlabs/prysm/v4/proto/eth/v2"
 	ethpbalpha "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
-	"google.golang.org/protobuf/proto"
 )
 
 // V1Alpha1BeaconBlockAltairToV2 converts a v1alpha1 Altair beacon block to a v2 Altair block.
@@ -1290,3 +1291,28 @@ func V1Alpha1SignedBLSToExecChangeToV2(alphaChange *ethpbalpha.SignedBLSToExecut
 	}
 	return result
 }
+
+// V1Alpha1SyncCommitteeToV2 converts a v1alpha1 SyncCommittee object to its v2 equivalent.
+func V1Alpha1SyncCommitteeToV2(alphaCommittee *ethpbalpha.SyncCommittee) *ethpbv2.SyncCommittee {
+	if alphaCommittee == nil {
+		return nil
+	}
+
+	result := &ethpbv2.SyncCommittee{
+		Pubkeys:         bytesutil.SafeCopy2dBytes(alphaCommittee.Pubkeys),
+		AggregatePubkey: bytesutil.SafeCopyBytes(alphaCommittee.AggregatePubkey),
+	}
+	return result
+}
+
+func V2SyncCommitteeToV1Alpha1(committee *ethpbv2.SyncCommittee) *ethpbalpha.SyncCommittee {
+	if committee == nil {
+		return nil
+	}
+
+	result := &ethpbalpha.SyncCommittee{
+		Pubkeys:         bytesutil.SafeCopy2dBytes(committee.Pubkeys),
+		AggregatePubkey: bytesutil.SafeCopyBytes(committee.AggregatePubkey),
+	}
+	return result
+}