feat: auto-set block timestamp for historical queries (cosmos#15448)

baseapp/abci.go

@@ -19,6 +19,7 @@ import (
 
 	"github.com/cosmos/cosmos-sdk/codec"
 	snapshottypes "github.com/cosmos/cosmos-sdk/snapshots/types"
+	"github.com/cosmos/cosmos-sdk/store/rootmulti"
 	"github.com/cosmos/cosmos-sdk/telemetry"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
@@ -709,6 +710,16 @@ func (app *BaseApp) CreateQueryContext(height int64, prove bool) (sdk.Context, e
 		cacheMS, app.checkState.ctx.BlockHeader(), true, app.logger,
 	).WithMinGasPrices(app.minGasPrices).WithBlockHeight(height)
 
+	if height != lastBlockHeight {
+		rms, ok := app.cms.(*rootmulti.Store)
+		if ok {
+			cInfo, err := rms.GetCommitInfoFromDB(height)
+			if cInfo != nil && err == nil {
+				ctx = ctx.WithBlockTime(cInfo.Timestamp)
+			}
+		}
+	}
+
 	return ctx, nil
 }
 

baseapp/baseapp.go

@@ -139,6 +139,8 @@ type BaseApp struct { // nolint: maligned
 	// indexEvents defines the set of events in the form {eventType}.{attributeKey},
 	// which informs Tendermint what to index. If empty, all events will be indexed.
 	indexEvents map[string]struct{}
+
+	latestHeader tmproto.Header
 }
 
 var _ upgrade.AppVersionManager = (*BaseApp)(nil)

proto/cosmos/base/store/v1beta1/commit_info.proto

@@ -2,14 +2,16 @@ syntax = "proto3";
 package cosmos.base.store.v1beta1;
 
 import "gogoproto/gogo.proto";
+import "google/protobuf/timestamp.proto";
 
 option go_package = "github.com/cosmos/cosmos-sdk/store/types";
 
 // CommitInfo defines commit information used by the multi-store when committing
 // a version/height.
 message CommitInfo {
-  int64              version     = 1;
-  repeated StoreInfo store_infos = 2 [(gogoproto.nullable) = false];
+  int64                     version     = 1;
+  repeated StoreInfo        store_infos = 2 [(gogoproto.nullable) = false];
+  google.protobuf.Timestamp timestamp   = 3 [(gogoproto.nullable) = false, (gogoproto.stdtime) = true];
 }
 
 // StoreInfo defines store-specific commit information. It contains a reference