Emit header in MsgUpdateClient events

CHANGELOG.md

@@ -58,6 +58,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Improvements
 
+* (x/ibc)[\#8624](https://github.com/cosmos/cosmos-sdk/pull/8624) Emit full header in IBC UpdateClient message.
+
 ### Bug Fixes
 
 * (x/evidence) [#8461](https://github.com/cosmos/cosmos-sdk/pull/8461) Fix bech32 prefix in evidence validator address conversion

x/ibc/core/02-client/keeper/client.go

@@ -102,6 +102,7 @@ func (k Keeper) UpdateClient(ctx sdk.Context, clientID string, header exported.H
 			sdk.NewAttribute(types.AttributeKeyClientID, clientID),
 			sdk.NewAttribute(types.AttributeKeyClientType, clientState.ClientType()),
 			sdk.NewAttribute(types.AttributeKeyConsensusHeight, consensusHeight.String()),
+			sdk.NewAttribute(types.AttributeKeyHeader, header.String()),
 		),
 	)
 

x/ibc/core/02-client/types/events.go

@@ -12,6 +12,7 @@ const (
 	AttributeKeySubjectClientID = "subject_client_id"
 	AttributeKeyClientType      = "client_type"
 	AttributeKeyConsensusHeight = "consensus_height"
+	AttributeKeyHeader          = "header"
 )
 
 // IBC client events vars

x/ibc/core/spec/06_events.md

@@ -32,6 +32,7 @@ callbacks to IBC applications.
 | update_client | client_id        | {clientId}        |
 | update_client | client_type      | {clientType}      |
 | update_client | consensus_height | {consensusHeight} |
+| update_cleint | header           | {header}          |
 | message       | action           | update_client     |
 | message       | module           | ibc_client        |