From d0427171042f2256bc1ed3d61b8c74ee99995d76 Mon Sep 17 00:00:00 2001
From: Jun Kimura <jun.kimura@datachain.jp>
Date: Tue, 5 Nov 2024 10:00:29 +0900
Subject: [PATCH] remove `latest_slot` from client state proto

Signed-off-by: Jun Kimura <jun.kimura@datachain.jp>
---
 crates/ibc/src/client_state.rs                               | 5 -----
 crates/ibc/src/update.rs                                     | 3 ---
 .../definitions/ibc/lightclients/ethereum/v1/ethereum.proto  | 5 ++---
 proto/src/prost/ibc.lightclients.ethereum.v1.rs              | 4 +---
 4 files changed, 3 insertions(+), 14 deletions(-)

diff --git a/crates/ibc/src/client_state.rs b/crates/ibc/src/client_state.rs
index acb5e60..42cb6da 100644
--- a/crates/ibc/src/client_state.rs
+++ b/crates/ibc/src/client_state.rs
@@ -57,7 +57,6 @@ pub struct ClientState<const SYNC_COMMITTEE_SIZE: usize> {
     pub max_clock_drift: Duration,
 
     /// State
-    pub latest_slot: Slot,
     pub latest_execution_block_number: U64,
     pub frozen_height: Option<Height>,
 
@@ -269,8 +268,6 @@ impl<const SYNC_COMMITTEE_SIZE: usize> ClientState<SYNC_COMMITTEE_SIZE> {
             Err(Error::UninitializedClientStateField("trust_level"))
         } else if self.trusting_period == Duration::default() {
             Err(Error::UninitializedClientStateField("trusting_period"))
-        } else if self.latest_slot == Slot::default() {
-            Err(Error::UninitializedClientStateField("latest_slot"))
         } else if self.latest_execution_block_number == U64::default() {
             Err(Error::UninitializedClientStateField(
                 "latest_execution_block_number",
@@ -749,7 +746,6 @@ impl<const SYNC_COMMITTEE_SIZE: usize> TryFrom<RawClientState>
                 .ok_or(Error::NegativeMaxClockDrift)?
                 .try_into()
                 .map_err(|_| Error::NegativeMaxClockDrift)?,
-            latest_slot: value.latest_slot.into(),
             latest_execution_block_number: value.latest_execution_block_number.into(),
             frozen_height,
             consensus_verifier: Default::default(),
@@ -810,7 +806,6 @@ impl<const SYNC_COMMITTEE_SIZE: usize> From<ClientState<SYNC_COMMITTEE_SIZE>> fo
             }),
             trusting_period: Some(value.trusting_period.into()),
             max_clock_drift: Some(value.max_clock_drift.into()),
-            latest_slot: value.latest_slot.into(),
             latest_execution_block_number: value.latest_execution_block_number.into(),
             frozen_height: value.frozen_height.map(|h| ProtoHeight {
                 revision_number: h.revision_number(),
diff --git a/crates/ibc/src/update.rs b/crates/ibc/src/update.rs
index d2e80e9..9744209 100644
--- a/crates/ibc/src/update.rs
+++ b/crates/ibc/src/update.rs
@@ -69,9 +69,6 @@ pub fn apply_updates<const SYNC_COMMITTEE_SIZE: usize, C: ChainContext>(
     };
 
     let mut new_client_state = client_state.clone();
-    if client_state.latest_slot < update_slot {
-        new_client_state.latest_slot = update_slot;
-    }
     if client_state.latest_execution_block_number < block_number {
         new_client_state.latest_execution_block_number = block_number;
     }
diff --git a/proto/definitions/ibc/lightclients/ethereum/v1/ethereum.proto b/proto/definitions/ibc/lightclients/ethereum/v1/ethereum.proto
index af160a9..e9f14f1 100644
--- a/proto/definitions/ibc/lightclients/ethereum/v1/ethereum.proto
+++ b/proto/definitions/ibc/lightclients/ethereum/v1/ethereum.proto
@@ -22,9 +22,8 @@ message ClientState {
   google.protobuf.Duration trusting_period = 11;
   google.protobuf.Duration max_clock_drift = 12;
 
-  uint64 latest_slot = 13;
-  uint64 latest_execution_block_number = 14;
-  ibc.core.client.v1.Height frozen_height = 15;
+  uint64 latest_execution_block_number = 13;
+  ibc.core.client.v1.Height frozen_height = 14;
 }
 
 message ConsensusState {
diff --git a/proto/src/prost/ibc.lightclients.ethereum.v1.rs b/proto/src/prost/ibc.lightclients.ethereum.v1.rs
index 2579146..86669d5 100644
--- a/proto/src/prost/ibc.lightclients.ethereum.v1.rs
+++ b/proto/src/prost/ibc.lightclients.ethereum.v1.rs
@@ -30,10 +30,8 @@ pub struct ClientState {
         super::super::super::super::google::protobuf::Duration,
     >,
     #[prost(uint64, tag = "13")]
-    pub latest_slot: u64,
-    #[prost(uint64, tag = "14")]
     pub latest_execution_block_number: u64,
-    #[prost(message, optional, tag = "15")]
+    #[prost(message, optional, tag = "14")]
     pub frozen_height: ::core::option::Option<
         super::super::super::core::client::v1::Height,
     >,