feat(store): add new api LatestVersion (#22305)

baseapp/baseapp.go

@@ -397,7 +397,7 @@ func (app *BaseApp) LastCommitID() storetypes.CommitID {
 
 // LastBlockHeight returns the last committed block height.
 func (app *BaseApp) LastBlockHeight() int64 {
-	return app.cms.LastCommitID().Version
+	return app.cms.LatestVersion()
 }
 
 // ChainID returns the chainID of the app.

store/CHANGELOG.md

@@ -25,6 +25,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
+### Improvements
+
+* (store) [#22305](https://github.com/cosmos/cosmos-sdk/pull/22305) Add `LatestVersion` to the `Committer` interface to get the latest version of the store.
+
 ### Bug Fixes
 
 * (store) [#20425](https://github.com/cosmos/cosmos-sdk/pull/20425) Fix nil pointer panic when query historical state where a new store don't exist.

store/iavl/store.go

@@ -146,6 +146,11 @@ func (st *Store) LastCommitID() types.CommitID {
 	}
 }
 
+// LatestVersion implements Committer.
+func (st *Store) LatestVersion() int64 {
+	return st.tree.Version()
+}
+
 // PausePruning implements CommitKVStore interface.
 func (st *Store) PausePruning(pause bool) {
 	if pause {

store/mem/store.go

@@ -59,4 +59,6 @@ func (s *Store) GetPruning() pruningtypes.PruningOptions {
 
 func (s Store) LastCommitID() (id types.CommitID) { return }
 
+func (s Store) LatestVersion() (version int64) { return }
+
 func (s Store) WorkingHash() (hash []byte) { return }

store/rootmulti/dbadapter.go

@@ -36,6 +36,10 @@ func (cdsa commitDBStoreAdapter) LastCommitID() types.CommitID {
 	}
 }
 
+func (cdsa commitDBStoreAdapter) LatestVersion() int64 {
+	return -1
+}
+
 func (cdsa commitDBStoreAdapter) WorkingHash() []byte {
 	return commithash
 }

store/rootmulti/store.go

@@ -434,7 +434,11 @@ func (rs *Store) PopStateCache() []*types.StoreKVPair {
 
 // LatestVersion returns the latest version in the store
 func (rs *Store) LatestVersion() int64 {
-	return rs.LastCommitID().Version
+	if rs.lastCommitInfo == nil {
+		return GetLatestVersion(rs.db)
+	}
+
+	return rs.lastCommitInfo.Version
 }
 
 // LastCommitID implements Committer/CommitStore.

store/transient/store.go

@@ -42,6 +42,11 @@ func (ts *Store) LastCommitID() types.CommitID {
 	return types.CommitID{}
 }
 
+// LatestVersion implements Committer
+func (ts *Store) LatestVersion() int64 {
+	return 0
+}
+
 func (ts *Store) WorkingHash() []byte {
 	return []byte{}
 }

store/types/store.go

@@ -21,6 +21,7 @@ type Store interface {
 type Committer interface {
 	Commit() CommitID
 	LastCommitID() CommitID
+	LatestVersion() int64
 
 	// WorkingHash returns the hash of the KVStore's state before commit.
 	WorkingHash() []byte