making the timestamp available to the rms on commits (#485)

baseapp/abci.go

@@ -318,6 +318,12 @@ func (app *BaseApp) Commit() (res abci.ResponseCommit) {
 	// The write to the DeliverTx state writes all state transitions to the root
 	// MultiStore (app.cms) so when Commit() is called is persists those values.
 	app.deliverState.ms.Write()
+
+	rms, ok := app.cms.(*rootmulti.Store)
+	if ok {
+		rms.SetCommitHeader(header)
+	}
+
 	commitID := app.cms.Commit()
 
 	// Reset the Check state to the latest committed.

store/rootmulti/store.go

@@ -2,6 +2,7 @@ package rootmulti
 
 import (
 	"fmt"
+	tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
 	"io"
 	"math"
 	"sort"
@@ -69,7 +70,8 @@ type Store struct {
 
 	interBlockCache types.MultiStorePersistentCache
 
-	listeners map[types.StoreKey][]types.WriteListener
+	listeners    map[types.StoreKey][]types.WriteListener
+	commitHeader tmproto.Header
 }
 
 var (
@@ -418,6 +420,7 @@ func (rs *Store) Commit() types.CommitID {
 	}
 
 	newCommitInfo := rs.commitStores(version, rs.stores)
+	newCommitInfo.Timestamp = rs.commitHeader.Time
 	rs.updateLatestCommitInfo(newCommitInfo, version)
 
 	err := rs.handlePruning(version)
@@ -436,6 +439,11 @@ func (rs *Store) Commit() types.CommitID {
 	}
 }
 
+// SetCommitHeader sets the commit block header of the store.
+func (rs *Store) SetCommitHeader(h tmproto.Header) {
+	rs.commitHeader = h
+}
+
 // CacheWrap implements CacheWrapper/Store/CommitStore.
 func (rs *Store) CacheWrap() types.CacheWrap {
 	return rs.CacheMultiStore().(types.CacheWrap)