fix: getMsgInfo returns an ErrNotFound when there are no rows

CHANGELOG.md

@@ -7,6 +7,7 @@
 
 - Make `EthTraceFilter` / `trace_filter` skip null rounds instead of erroring. ([filecoin-project/lotus#12702](https://github.com/filecoin-project/lotus/pull/12702))
 - Event APIs (`GetActorEventsRaw`, `SubscribeActorEventsRaw`, `eth_getLogs`, `eth_newFilter`, etc.) will now return an error when a request matches more than `MaxFilterResults` (default: 10,000) rather than silently truncating the results. Also apply an internal event matcher for `eth_getLogs` (etc.) to avoid builtin actor events on database query so as not to include them in `MaxFilterResults` calculation. ([filecoin-project/lotus#12671](https://github.com/filecoin-project/lotus/pull/12671))
+- GetMsgInfo returns an ErrNotFound when there are no rows ([filecoin-project/lotus#12680](https://github.com/filecoin-project/lotus/pull/12680))
 
 ## New Features
 

chain/index/read.go

@@ -49,6 +49,9 @@ func (si *SqliteIndexer) GetMsgInfo(ctx context.Context, messageCid cid.Cid) (*M
 	var height int64
 
 	if err := si.queryMsgInfo(ctx, messageCid, &tipsetKeyCidBytes, &height); err != nil {
+		if err == sql.ErrNoRows {
+			return nil, ErrNotFound
+		}
 		return nil, err
 	}
 

chain/index/read_test.go

@@ -57,23 +57,34 @@ func TestGetMsgInfo(t *testing.T) {
 	t.Logf("seed: %d", seed)
 	rng := pseudo.New(pseudo.NewSource(seed))
 	s, _, _ := setupWithHeadIndexed(t, 10, rng)
-	msgCid := randomCid(t, rng)
-	msgCidBytes := msgCid.Bytes()
-	tsKeyCid := randomCid(t, rng)
 
-	insertTipsetMessage(t, s, tipsetMessage{
-		tipsetKeyCid: tsKeyCid.Bytes(),
-		height:       uint64(1),
-		reverted:     false,
-		messageCid:   msgCidBytes,
-		messageIndex: 1,
+	t.Run("message exists", func(t *testing.T) {
+		msgCid := randomCid(t, rng)
+		msgCidBytes := msgCid.Bytes()
+		tsKeyCid := randomCid(t, rng)
+
+		insertTipsetMessage(t, s, tipsetMessage{
+			tipsetKeyCid: tsKeyCid.Bytes(),
+			height:       uint64(1),
+			reverted:     false,
+			messageCid:   msgCidBytes,
+			messageIndex: 1,
+		})
+
+		mi, err := s.GetMsgInfo(ctx, msgCid)
+		require.NoError(t, err)
+		require.Equal(t, msgCid, mi.Message)
+		require.Equal(t, tsKeyCid, mi.TipSet)
+		require.Equal(t, abi.ChainEpoch(1), mi.Epoch)
 	})
 
-	mi, err := s.GetMsgInfo(ctx, msgCid)
-	require.NoError(t, err)
-	require.Equal(t, msgCid, mi.Message)
-	require.Equal(t, tsKeyCid, mi.TipSet)
-	require.Equal(t, abi.ChainEpoch(1), mi.Epoch)
+	t.Run("message not found", func(t *testing.T) {
+		nonExistentMsgCid := randomCid(t, rng)
+		mi, err := s.GetMsgInfo(ctx, nonExistentMsgCid)
+		require.Error(t, err)
+		require.ErrorIs(t, err, ErrNotFound)
+		require.Nil(t, mi)
+	})
 }
 
 func setupWithHeadIndexed(t *testing.T, headHeight abi.ChainEpoch, rng *pseudo.Rand) (*SqliteIndexer, *types.TipSet, *dummyChainStore) {