From c8478ddd3f5565c78e48eaa36083f895d5acfd46 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Magiera?= <magik6k@gmail.com>
Date: Fri, 26 Jul 2019 18:13:25 +0200
Subject: [PATCH] chain: Make fetching parents in collectChainCaughtUp sort of
 work

---
 chain/sync.go | 47 +++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 45 insertions(+), 2 deletions(-)

diff --git a/chain/sync.go b/chain/sync.go
index a4cbc629f..01ddc0b17 100644
--- a/chain/sync.go
+++ b/chain/sync.go
@@ -584,8 +584,51 @@ func (syncer *Syncer) collectChainCaughtUp(fts *store.FullTipSet) ([]*store.Full
 	for {
 		ts, err := syncer.store.LoadTipSet(cur.Parents())
 		if err != nil {
-			log.Errorf("dont have parent blocks for sync tipset: %s", err)
-			panic("should do something better, like fetch? or error?")
+			// <TODO: cleanup>
+			// TODO: This is 'borrowed' from SyncBootstrap, needs at least some deduplicating
+
+			blockSet := []*types.TipSet{cur}
+
+			at := cur.Cids()
+			for blockSet[len(blockSet)-1].Height() > syncer.head.Height() {
+				// NB: GetBlocks validates that the blocks are in-fact the ones we
+				// requested, and that they are correctly linked to eachother. It does
+				// not validate any state transitions
+				fmt.Println("CaughtUp Get blocks")
+				blks, err := syncer.Bsync.GetBlocks(context.TODO(), at, 10)
+				if err != nil {
+					log.Error("failed to get blocks: ", err)
+					panic("aaa")
+				}
+
+				for _, b := range blks {
+					blockSet = append(blockSet, b)
+				}
+
+				at = blks[len(blks)-1].Parents()
+			}
+
+			for _, ts := range blockSet {
+				for _, b := range ts.Blocks() {
+					if err := syncer.store.PersistBlockHeader(b); err != nil {
+						log.Errorf("failed to persist synced blocks to the chainstore: %s", err)
+						panic("bbbbb")
+					}
+				}
+			}
+
+			// TODO: Message processing?
+
+			//log.Errorf("dont have parent blocks for sync tipset: %s", err)
+			//panic("should do something better, like fetch? or error?")
+
+			ts, err = syncer.store.LoadTipSet(cur.Parents())
+			if err != nil {
+				log.Errorf("HACK DIDNT WORK :( dont have parent blocks for sync tipset: %s", err)
+				panic("should do something better, like fetch? or error?")
+			}
+
+			// </TODO>
 		}
 
 		return chain, nil // return the chain because we have this last block in our cache already.