Fix corrupt item cache crashes, bot whispers, trade crashes

src/server/game/World/IWorld.h

@@ -597,6 +597,7 @@ public:
     [[nodiscard]] virtual std::string const& GetRealmName() const = 0;
     virtual void SetRealmName(std::string name) = 0;
     virtual void RemoveOldCorpses() = 0;
+    virtual SQLQueryHolderCallback& AddQueryHolderCallback(SQLQueryHolderCallback&& callback) = 0;
 };
 
 #endif //AZEROTHCORE_IWORLD_H

src/server/game/World/World.cpp

@@ -66,6 +66,7 @@
 #include "ObjectMgr.h"
 #include "Opcodes.h"
 #include "OutdoorPvPMgr.h"
+#include "QueryHolder.h"
 #include "PetitionMgr.h"
 #include "Player.h"
 #include "PlayerDump.h"
@@ -2459,6 +2460,7 @@ void World::Update(uint32 diff)
         CharacterDatabase.KeepAlive();
         LoginDatabase.KeepAlive();
         WorldDatabase.KeepAlive();
+        sScriptMgr->OnDatabasesKeepAlive();
     }
 
     {
@@ -3302,6 +3304,8 @@ void World::LoadDBRevision()
     {
         m_AuthDBRevision = "Unkown Auth Database Revision";
     }
+
+    sScriptMgr->OnDatabaseGetDBRevision(m_PlayerbotsDBRevision);
 }
 
 void World::UpdateAreaDependentAuras()
@@ -3369,6 +3373,12 @@ uint64 World::getWorldState(uint32 index) const
 void World::ProcessQueryCallbacks()
 {
     _queryProcessor.ProcessReadyCallbacks();
+    _queryHolderProcessor.ProcessReadyCallbacks();
+}
+
+SQLQueryHolderCallback& World::AddQueryHolderCallback(SQLQueryHolderCallback&& callback)
+{
+    return _queryHolderProcessor.AddCallback(std::move(callback));
 }
 
 void World::RemoveOldCorpses()

src/server/game/World/World.h

@@ -377,6 +377,9 @@ protected:
     void ResetRandomBG();
     void CalendarDeleteOldEvents();
     void ResetGuildCap();
+
+    SQLQueryHolderCallback& AddQueryHolderCallback(SQLQueryHolderCallback&& callback) override;
+
 private:
     static std::atomic_long m_stopEvent;
     static uint8 m_ExitCode;
@@ -457,6 +460,7 @@ private:
 
     void ProcessQueryCallbacks();
     QueryCallbackProcessor _queryProcessor;
+    AsyncCallbackProcessor<SQLQueryHolderCallback> _queryHolderProcessor;
 
     /**
      * @brief Executed when a World Session is being finalized. Be it from a normal login or via queue popping.