fix(Core/Travel): Chunk all saveNodeStore phases (deletes, nodes, links)

data/sql/playerbots/updates/2026_05_17_01_travelnode_path_shadowglen.sql

@@ -0,0 +1,29 @@
+-- Manual travelnode coverage for the Aldrassil ramp in Shadowglen
+-- (Teldrassil, map 1, zone 141). Adds 9 anchor nodes along the spiral
+-- ramp (base -> intermediate ramp waypoints -> top platform near
+-- Tenaron Stormgrip). All nodes are `linked = 0` so
+-- `.playerbots travel generatenode` will iterate them and let mmap
+-- compute the actual walk paths between consecutive nodes. Splitting
+-- the climb into short segments (~30y each) gives mmap a much better
+-- chance of resolving each piece than a single 300y end-to-end probe.
+
+SET @n1 := (SELECT IFNULL(MAX(id), 0) + 1 FROM playerbots_travelnode);
+SET @n2 := @n1 + 1;
+SET @n3 := @n1 + 2;
+SET @n4 := @n1 + 3;
+SET @n5 := @n1 + 4;
+SET @n6 := @n1 + 5;
+SET @n7 := @n1 + 6;
+SET @n8 := @n1 + 7;
+SET @n9 := @n1 + 8;
+
+INSERT INTO playerbots_travelnode (id, name, map_id, x, y, z, linked) VALUES
+(@n1, 'Aldrassil Ramp 1 (base)', 1, 10413.756, 887.97363, 1319.3668, 0),
+(@n2, 'Aldrassil Ramp 2',        1, 10440.520, 870.32320, 1328.9324, 0),
+(@n3, 'Aldrassil Ramp 3',        1, 10497.001, 854.46014, 1345.1770, 0),
+(@n4, 'Aldrassil Ramp 4',        1, 10517.199, 821.48640, 1354.7914, 0),
+(@n5, 'Aldrassil Ramp 5',        1, 10477.926, 847.88855, 1372.1685, 0),
+(@n6, 'Aldrassil Ramp 6',        1, 10455.358, 831.34240, 1380.9377, 0),
+(@n7, 'Aldrassil Ramp 7',        1, 10460.220, 800.71716, 1388.3368, 0),
+(@n8, 'Aldrassil Ramp 8',        1, 10507.434, 793.30420, 1397.2166, 0),
+(@n9, 'Aldrassil Ramp 9 (top)',  1, 10495.496, 804.67700, 1397.2662, 0);

src/Ai/Base/Actions/MovementActions.cpp

@@ -180,11 +180,11 @@ void MovementAction::EmitDebugMove(char const* method, char const* generator, fl
 
     float dis = bot->GetExactDist(x, y, z);
     std::ostringstream out;
-    out << "[MOVE] meth=" << method
-        << " | via=" << (generator && *generator ? generator : "-")
-        << " | rpg=" << statusName
-        << " | d=" << dis << "y"
-        << " | targ=" << (targetName.empty() ? "-" : targetName.c_str());
+    out << "[M] | " << method
+        << " | " << (generator && *generator ? generator : "-")
+        << " | " << statusName
+        << " | " << std::fixed << std::setprecision(2) << dis << " yard"
+        << " | " << (targetName.empty() ? "-" : targetName.c_str());
     if (extra && *extra)
         out << " | " << extra;
     botAI->TellMasterNoFacing(out);

src/Mgr/Travel/TravelNode.cpp

@@ -2018,71 +2018,109 @@ void TravelNodeMap::saveNodeStore()
 
     hasToSave = false;
 
-    PlayerbotsDatabaseTransaction trans = PlayerbotsDatabase.BeginTransaction();
+    constexpr uint32 STMTS_PER_TX = 500;  // bounded transaction size
 
-    trans->Append(PlayerbotsDatabase.GetPreparedStatement(PLAYERBOTS_DEL_TRAVELNODE));
-    trans->Append(PlayerbotsDatabase.GetPreparedStatement(PLAYERBOTS_DEL_TRAVELNODE_LINK));
-    trans->Append(PlayerbotsDatabase.GetPreparedStatement(PLAYERBOTS_DEL_TRAVELNODE_PATH));
+    // Phase 1: deletes in their own transaction.
+    {
+        PlayerbotsDatabaseTransaction delTrans = PlayerbotsDatabase.BeginTransaction();
+        delTrans->Append(PlayerbotsDatabase.GetPreparedStatement(PLAYERBOTS_DEL_TRAVELNODE));
+        delTrans->Append(PlayerbotsDatabase.GetPreparedStatement(PLAYERBOTS_DEL_TRAVELNODE_LINK));
+        delTrans->Append(PlayerbotsDatabase.GetPreparedStatement(PLAYERBOTS_DEL_TRAVELNODE_PATH));
+        PlayerbotsDatabase.CommitTransaction(delTrans);
+    }
 
     std::unordered_map<TravelNode*, uint32> saveNodes;
     std::vector<TravelNode*> anodes = TravelNodeMap::instance().getNodes();
 
-    for (uint32 i = 0; i < anodes.size(); i++)
+    // Phase 2: node inserts, chunked at STMTS_PER_TX per transaction.
     {
-        TravelNode* node = anodes[i];
+        PlayerbotsDatabaseTransaction nodeTrans = PlayerbotsDatabase.BeginTransaction();
+        uint32 inTx = 0;
+        for (uint32 i = 0; i < anodes.size(); i++)
+        {
+            TravelNode* node = anodes[i];
 
-        std::string name = node->getName();
-        name.erase(remove(name.begin(), name.end(), '\''), name.end());
+            std::string name = node->getName();
+            name.erase(remove(name.begin(), name.end(), '\''), name.end());
 
-        PlayerbotsDatabasePreparedStatement* stmt = PlayerbotsDatabase.GetPreparedStatement(PLAYERBOTS_INS_TRAVELNODE);
-        stmt->SetData(0, i);
-        stmt->SetData(1, name);
-        stmt->SetData(2, node->GetMapId());
-        stmt->SetData(3, node->getX());
-        stmt->SetData(4, node->getY());
-        stmt->SetData(5, node->getZ());
-        stmt->SetData(6, node->isLinked());
-        trans->Append(stmt);
+            PlayerbotsDatabasePreparedStatement* stmt = PlayerbotsDatabase.GetPreparedStatement(PLAYERBOTS_INS_TRAVELNODE);
+            stmt->SetData(0, i);
+            stmt->SetData(1, name);
+            stmt->SetData(2, node->GetMapId());
+            stmt->SetData(3, node->getX());
+            stmt->SetData(4, node->getY());
+            stmt->SetData(5, node->getZ());
+            stmt->SetData(6, node->isLinked());
+            nodeTrans->Append(stmt);
 
-        saveNodes.insert(std::make_pair(node, i));
+            saveNodes.insert(std::make_pair(node, i));
+
+            if (++inTx >= STMTS_PER_TX)
+            {
+                PlayerbotsDatabase.CommitTransaction(nodeTrans);
+                nodeTrans = PlayerbotsDatabase.BeginTransaction();
+                inTx = 0;
+            }
+        }
+        PlayerbotsDatabase.CommitTransaction(nodeTrans);
     }
 
     LOG_INFO("playerbots", ">> Saved {} travelNodes.", anodes.size());
 
+    // Phase 3: link inserts, chunked at STMTS_PER_TX per transaction.
     uint32 paths = 0;
-    for (uint32 i = 0; i < anodes.size(); i++)
     {
-        TravelNode* node = anodes[i];
-
-        for (auto& link : *node->getLinks())
+        PlayerbotsDatabaseTransaction linkTrans = PlayerbotsDatabase.BeginTransaction();
+        uint32 inTx = 0;
+        for (uint32 i = 0; i < anodes.size(); i++)
         {
-            TravelNodePath* path = link.second;
+            TravelNode* node = anodes[i];
 
-            PlayerbotsDatabasePreparedStatement* stmt =
-                PlayerbotsDatabase.GetPreparedStatement(PLAYERBOTS_INS_TRAVELNODE_LINK);
-            stmt->SetData(0, i);
-            stmt->SetData(1, saveNodes.find(link.first)->second);
-            stmt->SetData(2, static_cast<uint8>(path->getPathType()));
-            stmt->SetData(3, path->getPathObject());
-            stmt->SetData(4, path->getDistance());
-            stmt->SetData(5, path->getSwimDistance());
-            stmt->SetData(6, path->getExtraCost());
-            stmt->SetData(7, path->getCalculated());
-            stmt->SetData(8, path->getMaxLevelCreature()[0]);
-            stmt->SetData(9, path->getMaxLevelCreature()[1]);
-            stmt->SetData(10, path->getMaxLevelCreature()[2]);
-            trans->Append(stmt);
+            for (auto& link : *node->getLinks())
+            {
+                TravelNodePath* path = link.second;
 
-            paths++;
+                PlayerbotsDatabasePreparedStatement* stmt =
+                    PlayerbotsDatabase.GetPreparedStatement(PLAYERBOTS_INS_TRAVELNODE_LINK);
+                stmt->SetData(0, i);
+                stmt->SetData(1, saveNodes.find(link.first)->second);
+                stmt->SetData(2, static_cast<uint8>(path->getPathType()));
+                stmt->SetData(3, path->getPathObject());
+                stmt->SetData(4, path->getDistance());
+                stmt->SetData(5, path->getSwimDistance());
+                stmt->SetData(6, path->getExtraCost());
+                stmt->SetData(7, path->getCalculated());
+                stmt->SetData(8, path->getMaxLevelCreature()[0]);
+                stmt->SetData(9, path->getMaxLevelCreature()[1]);
+                stmt->SetData(10, path->getMaxLevelCreature()[2]);
+                linkTrans->Append(stmt);
+
+                paths++;
+
+                if (++inTx >= STMTS_PER_TX)
+                {
+                    PlayerbotsDatabase.CommitTransaction(linkTrans);
+                    linkTrans = PlayerbotsDatabase.BeginTransaction();
+                    inTx = 0;
+                }
+            }
         }
+        PlayerbotsDatabase.CommitTransaction(linkTrans);
     }
-    // Path points: bulk raw SQL multi-row INSERTs (~500 rows each) instead of
-    // 1M+ individual prepared statements.  Appended to the same transaction so
-    // ordering is guaranteed.
+
+    // Phase 2: path points in chunked transactions. Previously all
+    // ~1.5M point inserts went into a single mega-transaction which
+    // exceeded MySQL's packet/transaction limits and partial-committed,
+    // corrupting the DB (links saved, paths empty). Chunk now commits
+    // every ~10000 rows. A failed chunk loses only its rows; the rest
+    // survive.
     constexpr uint32 BATCH_SIZE = 500;
+    constexpr uint32 BATCHES_PER_COMMIT = 20;  // 20 * 500 = 10000 rows per tx
     uint32 points = 0;
     std::ostringstream ss;
     uint32 batchCount = 0;
+    uint32 batchesInCurrentTx = 0;
+    PlayerbotsDatabaseTransaction pathTrans = PlayerbotsDatabase.BeginTransaction();
 
     auto flushBatch = [&]()
     {
@@ -2091,10 +2129,21 @@ void TravelNodeMap::saveNodeStore()
 
         std::string sql = ss.str();
         sql.back() = ';';  // Replace trailing comma
-        trans->Append(sql.c_str());
+        pathTrans->Append(sql.c_str());
         ss.str("");
         ss.clear();
         batchCount = 0;
+        batchesInCurrentTx++;
+    };
+
+    auto commitIfFull = [&]()
+    {
+        if (batchesInCurrentTx >= BATCHES_PER_COMMIT)
+        {
+            PlayerbotsDatabase.CommitTransaction(pathTrans);
+            pathTrans = PlayerbotsDatabase.BeginTransaction();
+            batchesInCurrentTx = 0;
+        }
     };
 
     for (uint32 i = 0; i < anodes.size(); i++)
@@ -2125,16 +2174,18 @@ void TravelNodeMap::saveNodeStore()
                 points++;
 
                 if (batchCount >= BATCH_SIZE)
+                {
                     flushBatch();
+                    commitIfFull();
+                }
             }
         }
     }
 
     flushBatch();
+    PlayerbotsDatabase.CommitTransaction(pathTrans);
 
     LOG_INFO("playerbots", ">> Saved {} travelNode Paths, {} points.", paths, points);
-
-    PlayerbotsDatabase.CommitTransaction(trans);
 }
 
 void TravelNodeMap::LoadNodeStore()