1. Sophisticated Storage shulkers/barrels/chests:
- ROOT CAUSE: UUID stored as DataComponent (not in CustomData).
extractStorageUuid() only checked CustomData, missing the UUID.
- FIX: Use StackStorageWrapper.fromStack(provider, item).getContentsUuid()
which reads the DataComponent via the proper API.
- Also scan ender chest for packed storage items.
2. Refined Storage 2 disks:
- ROOT CAUSE: save() on StorageRepositoryImpl returned data in an
unknown codec format that our extraction couldn't parse.
- FIX: Read/write the .dat file directly from disk after forcing
a save flush. This uses the exact NBT format RS2 writes.
- Search multiple NBT structures (direct keys, nested compounds,
list-of-pairs) to handle any codec format.
- On restore: write entries into .dat file, clear DimensionDataStorage
cache via reflection to force RS2 to reload.
3. Kick system:
- ROOT CAUSE: PlayerNegotiationEvent.getConnection().disconnect()
does NOT work in NeoForge 1.21.1 (too early in connection).
- FIX: Full duplicate check moved to PlayerLoggedInEvent with
HIGHEST priority. Uses player.connection.disconnect() which
is reliable on the server thread.
- Marks online=1 synchronously to close race condition.
Vyrriox
1. CRITICAL - Anti-dupe: Player inventory mutations now run on the main
server thread via server.execute(). DB reads stay async, but all
setItem/setHealth/addEffect calls happen on the tick thread.
CountDownLatch ensures the lock is held until apply completes.
2. CRITICAL - Resource leaks: 3 QueryResults in PlayerSync.java startup
now use try-with-resources + PreparedStatements instead of raw
String.format SQL.
3. HIGH - Curios save: UPDATE changed to REPLACE INTO to prevent silent
no-ops when the curios row doesn't exist yet (new player who died
before first init save).
4. HIGH - RS2 restore: Removed skip-if-exists check. DB is always the
source of truth - stale local data was persisting permanently.
5. HIGH - Race conditions: Shutdown save now acquires per-player lock.
All logout saves (curios, mod-compat, inventory) moved inside
doPlayerLogout under a single lock acquisition.
6. HIGH - SQL injection: DATABASE_NAME validated against [A-Za-z0-9_]+
regex on startup to prevent injection via config.
Vyrriox
Minecraft only flushes PlayerAdvancements to disk during auto-save
(~every 5 min). If a player earns an advancement and switches servers
before the next auto-save, store() reads the stale file and the
advancement is lost in the DB.
Fix: call sp.getAdvancements().save() to force flush to disk before
reading the advancement file in store().
Vyrriox
1. NeoForge attachments (SOL Onion, Ars Nouveau, etc.):
- deserializeAttachments signature is (Provider, CompoundTag) not
(CompoundTag) - reflection was failing silently, nothing restored
- Use serializeAttachments(Provider) directly for saving instead of
saveWithoutId() for cleaner approach
- This fixes SOL Onion food diversity, Ars Nouveau mana/glyphs,
Iron's Spellbooks, Pehkui scale, and all other NeoForge attachments
2. Multi-server kick:
- Add secondary kick check in PlayerLoggedInEvent as fallback
- Mark online=1 SYNCHRONOUSLY on login to close race condition
where async doPlayerJoin hasn't set online=1 yet
3. Backpack upgrades:
- Call refreshInventoryForInputOutput() before reading from
BackpackStorage to flush pending wrapper changes
Vyrriox
Effects from the local server .dat file persisted when the player had
no effects saved in the DB. removeAllEffects() was only called inside
the if-block that checks for saved effect data, so it was skipped when
effectData was null/empty. Now effects are ALWAYS cleared before
restoring from DB.
SOL Onion food diversity is already synced via the generic NeoForge
attachment system (FoodPlayerData is a NeoForge attachment).
Vyrriox
- Sync RS2 disk storage contents between servers (storageReference UUID)
- Support both refinedstorage and extradisks namespaces
- Save: extract individual entries from StorageRepository SavedData
- Restore: decode via RS2 codec and inject into target server repository
- Skip restore if storage already exists on target server (no overwrite)
- Scan inventory + ender chest for disks
Vyrriox
Replace unbounded CachedThreadPool with bounded ThreadPoolExecutor.
Problem: CachedThreadPool creates unlimited threads. With many players
online and slow DB queries, thread count explodes (25000+ threads
observed in issue #169), causing memory leaks and server crashes.
Fix: ThreadPoolExecutor with 2 core / 8 max threads, 30s keepalive,
256-task bounded queue, and CallerRunsPolicy for backpressure.
When the queue is full, tasks execute on the calling thread instead
of creating more threads, providing natural flow control.
Closesmlus-asuka/PlayerSync#169
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Per-player ReentrantLock prevents concurrent save/restore operations,
eliminating race conditions that could cause item duplication
- Save ALL online players on ServerStoppingEvent (before disconnect) to
prevent data loss from server shutdowns/restarts
- Lock acquired before restore on join, released in finally block
- Lock acquired before save on logout, cleaned up after completion
- Verified compatibility with 430-mod Arcadia V2 modpack:
- All item DataComponents from all mods preserved via BNBT serialization
- Curios items (Artifacts, Elytra Slot, Charm of Undying, etc.) synced
- Accessories items (Aether, Deep Aether) synced
- Server-specific data (FTB Quests/Chunks, Waystones, Lootr) correctly
NOT synced as intended
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Add Accessories API sync for Aether mod accessory slots (pendant, cape,
gloves, rings, shield, misc). Uses same pattern as Curios: validate data
before clearing slots, PreparedStatements for DB operations
- Add Cosmetic Armor Reworked sync for 4 cosmetic armor slots via
InventoryManager/CosArmorAPI
- Add Apotheosis + Placebo as compileOnly deps. Apotheosis item data
(affixes, gems, sockets, rarity) travels with items via DataComponents
and is already synced by the inventory sync
- New generic mod_player_data DB table with composite key (uuid, mod_id)
for extensible mod-specific data storage
- Integrated save/restore in join, logout, and auto-save pipelines
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Fix advancements disappearing: use PreparedStatements for all SQL with
user data (advancement JSON contains chars that broke string-concat SQL),
add null safety for advancement file
- Fix multi-server kick: run doPlayerConnect synchronously instead of async
(players could join before the duplicate check completed)
- Fix Curios disappearing: clear slots AFTER validating data exists (not
before), use CuriosCache for dead players on logout instead of empty API
- Fix Sophisticated Storage items: add storeSophisticatedStorageItems() and
restoreSophisticatedStorageItems() to sync packed barrels/shulkers/chests
- Anti-duplication: clear all inventories before restoring from DB on join
- Fix tick counter: remove LevelTickEvent (fired per dimension = 3x too
fast), merge heartbeat into ServerTickEvent
- Fix connection leaks: use try-with-resources for all QueryResult
- Fix logout order: save data BEFORE marking player offline
- Skip auto-save for dead/unsynced players to prevent saving empty data
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This allows using PlayerSync with different minecraft versions and
even different sets of mods.
All unknown items are replaced by Paper with its original NBT data
encoded into the paper item.
Previously, the json was written too late and never reloaded.
This commit moves the advancement restoration from the PlayerLoggedInEvent
to the earlier onDatapackSyncEvent.
At the same time, it forces a reload of the json files, making sure the
client is informed about the update advancements.
net.p3pp3rf1y.sophisticatedbackpacks throws a NoClassDefFoundError when
sophisticated backpacks is not installed.
This exception never reaches the logs for unknown reasons.
Checking explicitly for ModList.get().isLoaded() ensures that the mod is
loaded.
Fixes regression of 439c7ee5bb
The continue "skipped" the armor entries in the database instead of
writing an explicit "air" item into the slot.
When restoring, only existing entries are being restored, all other
items are left untouched. Allowing to dupe items in armor slots.
