From a1b80a9b15f42cd14e5060cc6575506d969d6ca8 Mon Sep 17 00:00:00 2001
From: Terence Tsao <terence@prysmaticlabs.com>
Date: Sun, 25 Aug 2019 14:54:35 -0700
Subject: [PATCH] Added proto schema definitions for light client

---
 proto/light/p2p/types.proto | 40 +++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 proto/light/p2p/types.proto

diff --git a/proto/light/p2p/types.proto b/proto/light/p2p/types.proto
new file mode 100644
index 0000000..953b900
--- /dev/null
+++ b/proto/light/p2p/types.proto
@@ -0,0 +1,40 @@
+syntax = "proto3";
+
+import "github.com/gogo/protobuf/gogoproto/gogo.proto";
+
+message BeaconBlockHeader {
+    uint64 slot = 1;
+    bytes parent_root = 2 [(gogoproto.moretags) = "ssz-size:\"32\""];
+    bytes state_root = 3 [(gogoproto.moretags) = "ssz-size:\"32\""];
+    bytes body_root = 4 [(gogoproto.moretags) = "ssz-size:\"32\""];
+    bytes signature = 5 [(gogoproto.moretags) = "ssz-size:\"96\""];
+}
+
+message CompactCommittee {
+    repeated bytes public_keys = 1 [(gogoproto.moretags) = "ssz-size:\"48,4096\""];
+    repeated uint64 compact_validators = 2 [(gogoproto.moretags) = "ssz-size:\"4096\""];
+}
+
+message LightClientUpdate {
+    // Shard block root for authenticating signature data
+    bytes shard_block_root = 1 [(gogoproto.moretags) = "ssz-size:\"32\""];
+    bytes fork_version = 2 [(gogoproto.moretags) = "ssz-size:\"4\""];
+    bytes aggregation_bits = 3 [(gogoproto.moretags) = "ssz-max:\"4096\"", (gogoproto.casttype) = "github.com/prysmaticlabs/go-bitfield.Bitlist"];
+    bytes signature = 4 [(gogoproto.moretags) = "ssz-size:\"96\""];
+    // Updated beacon header for authenticating branch
+    BeaconBlockHeader header = 5;
+    repeated bytes header_branch = 6 [(gogoproto.moretags) = "ssz-size:\"4\""];
+    // Updated persistent committee for authenticating branch
+    CompactCommittee committee = 7;
+    repeated bytes committee_branch = 8 [(gogoproto.moretags) = "ssz-size:\"16\""];
+
+}
+
+message LightClientStore {
+    uint64 shard = 1;
+    BeaconBlockHeader header = 2;
+    // Persistent committees corresponding to the last processed beacon block header
+    CompactCommittee previous_committee = 3;
+    CompactCommittee current_committee = 4;
+    CompactCommittee next_committee = 5;
+}