chore: Add dummy handler of MsgInjectedCheckpoint

CHANGELOG.md

@@ -41,6 +41,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 - [#391](https://github.com/babylonlabs-io/babylon/pull/391) Fix e2e `TestBTCRewardsDistribution` flunky
 check of rewards
+- [#395](https://github.com/babylonlabs-io/babylon/pull/395) Add dummy handler of MsgInjectedCheckpoint
 
 ## v1.0.0-rc3
 

proto/babylon/checkpointing/v1/checkpoint.proto

@@ -3,7 +3,6 @@ package babylon.checkpointing.v1;
 
 import "google/protobuf/timestamp.proto";
 import "gogoproto/gogo.proto";
-import "tendermint/abci/types.proto";
 
 option go_package = "github.com/babylonlabs-io/babylon/x/checkpointing/types";
 
@@ -44,16 +43,6 @@ message RawCheckpointWithMeta {
   repeated CheckpointStateUpdate lifecycle = 5;
 }
 
-// MsgInjectedCheckpoint wraps the checkpoint and the extended votes
-// Note: this is a special message type that is only for internal ABCI++ usage
-// for inserting checkpoint into the block
-message MsgInjectedCheckpoint {
-  RawCheckpointWithMeta ckpt = 1;
-  // extended_commit_info is the commit info including the vote extensions
-  // from the previous proposal
-  tendermint.abci.ExtendedCommitInfo extended_commit_info = 2;
-}
-
 // CheckpointStatus is the status of a checkpoint.
 enum CheckpointStatus {
   option (gogoproto.goproto_enum_prefix) = false;

proto/babylon/checkpointing/v1/tx.proto

@@ -2,9 +2,12 @@ syntax = "proto3";
 package babylon.checkpointing.v1;
 
 import "gogoproto/gogo.proto";
+import "cosmos_proto/cosmos.proto";
 import "babylon/checkpointing/v1/bls_key.proto";
+import "babylon/checkpointing/v1/checkpoint.proto";
 import "cosmos/staking/v1beta1/tx.proto";
 import "cosmos/msg/v1/msg.proto";
+import "tendermint/abci/types.proto";
 
 option go_package = "github.com/babylonlabs-io/babylon/x/checkpointing/types";
 
@@ -15,6 +18,10 @@ service Msg {
   // WrappedCreateValidator defines a method for registering a new validator
   rpc WrappedCreateValidator(MsgWrappedCreateValidator)
       returns (MsgWrappedCreateValidatorResponse);
+
+  // InjectedCheckpoint defines a dummy method for handling an injected checkpoint
+  rpc InjectedCheckpoint(MsgInjectedCheckpoint)
+      returns (MsgInjectedCheckpointResponse);
 }
 
 // MsgWrappedCreateValidator defines a wrapped message to create a validator
@@ -30,3 +37,23 @@ message MsgWrappedCreateValidator {
 // MsgWrappedCreateValidatorResponse defines the MsgWrappedCreateValidator
 // response type
 message MsgWrappedCreateValidatorResponse {}
+
+// MsgInjectedCheckpoint wraps the checkpoint and the extended votes
+// Note: this is a special message type that is only for internal ABCI++ usage
+// for inserting checkpoint into the block
+message MsgInjectedCheckpoint {
+  option (cosmos.msg.v1.signer) = "placeholder_addr";
+
+  // placeholder_addr is the placeholder address requested by
+  // cosmos sdk as a message; this message in an internal message
+  // which only be handled in PreBlocker
+  string placeholder_addr = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];
+  RawCheckpointWithMeta ckpt = 2;
+  // extended_commit_info is the commit info including the vote extensions
+  // from the previous proposal
+  tendermint.abci.ExtendedCommitInfo extended_commit_info = 3;
+}
+
+// MsgInjectedCheckpointResponse defines the MsgInjectedCheckpoint
+// response type
+message MsgInjectedCheckpointResponse {}

x/checkpointing/keeper/msg_server.go

@@ -51,5 +51,11 @@ func (m msgServer) WrappedCreateValidator(goCtx context.Context, msg *types.MsgW
 
 	m.k.epochingKeeper.EnqueueMsg(ctx, queueMsg)
 
-	return &types.MsgWrappedCreateValidatorResponse{}, err
+	return &types.MsgWrappedCreateValidatorResponse{}, nil
+}
+
+// InjectedCheckpoint is a dummy msg handler as MsgInjectedCheckpoint is an internal message handled in
+// PreBlocker. This is to avoid errors from the explorers
+func (m msgServer) InjectedCheckpoint(_ context.Context, _ *types.MsgInjectedCheckpoint) (*types.MsgInjectedCheckpointResponse, error) {
+	return &types.MsgInjectedCheckpointResponse{}, nil
 }