boosCooldowns

4.0.0 – 2026-04-18

This is a complete rewrite of the plugin. Player state lives in a database instead of a YAML file, commands have been regrouped into nested subcommands, and a long list of new features landed. Legacy config.yml works unchanged and every pre-4.0 command name is still routable as an alias, so upgrades are drop-in for server admins. Plugins consuming the Java API need to update their imports – see Breaking below.

⚠️ Breaking

• Java package renamed from cz.boosik.boosCooldown → software.boos.boosCooldown. Plugins that depend on BoosCooldownAPI or the custom events must update their imports and add loadbefore: [boosCooldowns] to their plugin.yml.
• Minimum Java version raised from 8 to 21.
• Maven groupId changed from cz.boosik to software.boos.

✨ Added

Persistence

• Database-backed state – SQLite (default, zero-config) or MySQL / MariaDB for networks.
• Schema-versioned migrations (V1 initial, V2 user_preferences, V3 audit_log, V4 config_version).
• HikariCP connection pool with leak detection.
• Auto-migration of legacy users.yml on first start (old file renamed to users.yml.migrated-<timestamp>).
• JDBC drivers auto-downloaded via libraries: in plugin.yml.

Multi-server

• Cooldowns, limits, server cooldowns, user preferences and scheduled resets shared across every server pointing at the same MySQL/MariaDB.
• Server-wide cooldowns (server_cooldown:) – one player using a command blocks everyone else on the network for the window.
• Config drift detection – each node hashes config.yml on enable and on /bcd reload, a periodic monitor logs a warning when peers disagree, /bcd diff reports which nodes differ.
• options.options.node_id for human-readable node labels.

Per-command rules

• Progressive cooldowns via cooldown_multiplier and cooldown_reset_after.
• Per-world restrictions (worlds: [survival, nether]).
• WorldGuard regions (regions: [spawn, arena]) as soft-depend.
• Group inheritance via _inherits: default so VIP groups only override what changes.
• Disable commands via disabled: true without unregistering them.
• Per-command messages (cooldown_message, warmup_message, disabled_message, server_cooldown_message) with per-player PlaceholderAPI expansion.

Player UX

• Boss bar progress indicator during warmup.
• Action bar for warmup countdown and cooldown notices on attempt.
• Warmup sounds (warmup_sound, complete_sound) and particles (warmup_particle) per command.
• Confirmation dialogs – clickable [Yes] / [No] for commands with a price/limit, per-player toggle persisted in DB.
• Refund on warmup cancel (refund_on_warmup_cancel) – returns money, items and XP when a warmup is aborted.
• Localization – drop a messages_<locale>.yml and messages follow the client language. Bundled example: messages_cs.yml.

Admin tooling

• Commands regrouped under /bcd clear, /bcd rule, /bcd grant, /bcd reset groups.
• New subcommands: status, check, clear all, rule get, grant uses, tempset, validate, audit, diff, help.
• Autogenerated /bcd help – permission-filtered, grouped into Player / Administration / Diagnostics sections.
• Smart tab completion – suggests option keys, online players, configured commands at every level.
• /bcd validate – config linter catches unknown option keys, invalid durations, typos in materials and sounds.
• /bcd tempset – option override that auto-restores after a duration.
• Legacy aliases – every pre-4.0 command name (clearcooldowns, set, info, scheduleglobalreset, …) still routes to its new home.

Automation

• Event-based cooldown resets via event_triggers: – clear a player's cooldown when they kill a specific entity or earn an advancement, with optional chat message, sound cue and server-wide broadcast.
• Scheduled global limit resets via /bcd reset schedule <cmd> <time>, visible through /bcd reset list, persisted in DB.
• Namespace-aware command handling (apply_rules_to_prefixed_syntax: true) – rewrites /minecraft:tp → /tp so plugin rules still apply, without needing the hard syntax blocker.

Integrations

• PlaceholderAPI expansion registered automatically: %boos_remaining_<cmd>%, %boos_remaining_seconds_<cmd>%, %boos_on_cooldown_<cmd>%, %boos_server_cooldown_<cmd>%, %boos_uses_<cmd>%, %boos_uses_remaining_<cmd>%.
• Foreign placeholders inside plugin messages – any %vault_eco_balance% / %luckperms_primary_group% etc. resolves per-player in cooldown/warmup/disabled messages.
• Vault, PlayerPoints, WorldGuard, LuckPerms detected at runtime; missing integration disables its feature, never breaks startup.
• bStats – 13 custom charts covering storage backend (with driver version drill-down), feature toggles, detected integrations, multi-node setup, locale distribution, config scale, warmup cancel sources.

Developer

• Public BoosCooldownAPI facade with isOnCooldown, setCooldown, getRemainingUses, etc.
• Custom cancellable Bukkit events: CooldownEvent, WarmupEvent, CommandEvent.
• 142 tests – JUnit 5 + Mockito + MockBukkit integration tests; full CI workflow on every PR.
• JMH benchmark for the cooldown hot-path.
• GitHub Actions CI workflow (.github/workflows/ci.yml).

Security

• All SQL uses parameterized PreparedStatement.
• Vault / PlayerPoints / PlaceholderAPI / WorldGuard class references isolated behind isPluginEnabled checks and LinkageError catches – plugin boots cleanly even when every optional dependency is missing.
• Command pipeline wrapped in try/catch so a bug in a single check can never block every command on the server.

🔧 Changed

• Vault / PlayerPoints no longer cause NoClassDefFoundError on servers that don't have them – integrations are now fully soft-depend-safe.
• Package structure – monolithic BoosCoolDownListener (434 lines) split into a service / listener / command / persistence layout. Static Managers replaced with an injected Services container.
• Build target – Paper 1.21.8 API, plugin.yml declares api-version: "1.20" so the jar runs on Paper 1.20+ through 26.1.2 without a rebuild.
• Cooldown storage key – previously String.hashCode() (collidable, opaque), now a normalized, stable CommandKey that's human-readable during debugging.
• Timestamps – SimpleDateFormat("dd.MM.yyyy HH:mm:ss") replaced by java.time.Instant + epoch-millis columns.
• Hot-path reads – PlayerCommandPreprocessEvent handler only ever touches an in-memory cache; cache is pre-warmed on PlayerJoinEvent so no cache miss can hit the DB synchronously.
• Command pipeline ordering – every check now runs before mutations, preventing partial charges when a later gate rejects the command (see Fixed below).
• Bundled dependencies – HikariCP and bStats are shaded and relocated under software.boos.boosCooldown.shaded.*.

🐛 Fixed

• limit_reset_delay no longer sticks at zero – previously, once a player had consumed all their uses and the reset window elapsed, the resetAt timestamp was ignored and the limit stayed at 0 forever. The service now refreshes expired windows on read.
• Pipeline no longer partially charges blocked commands – when a command is blocked by insufficient funds or warmup already started, the usage counter and economy balance are no longer mutated before the rejection. Check-then-commit pattern with refund fallback.
• /plugin:command syntax now triggers plugin rules instead of bypassing them, with the option to either reject (syntax_blocker_enabled: true) or transparently rewrite (apply_rules_to_prefixed_syntax: true).
• Plugin disable no longer leaks resources – HikariDataSource.close() is called, the async executor's awaitTermination(5s) waits for pending DB writes, Bukkit.getScheduler().cancelTasks(this) cancels timers. Prevents SQLite file locks on Windows after /reload.
• Action bar / boss bar effects properly cancelled when warmup is aborted.
• Sign.getLine(int) replaced with modern Sign.getSide(Side.FRONT).getLine(int) for 1.20+ sign compatibility.
• Bukkit.getOfflinePlayer(String) blocking I/O removed from subcommands – Bukkit.getPlayerExact(String) is used instead.
• Command listener fails open – an exception inside the pipeline logs to console but leaves the event alone, so Bukkit still dispatches the command. A bug can't block every command server-wide anymore.
• Config get("commands.groups.default./kit.limit") path handling – rewritten to traverse nested ConfigurationSections instead of string path lookup, fixing rules for commands with slashes in their key.
• Sound.valueOf(String) deprecation – wrapped in LinkageError catch so future Paper builds that remove it will log a warning instead of crashing the effect.
• HikariCP leak detection set to 10s to surface unclosed connections early.

🗑️ Removed

• Legacy Managers/ package (replaced by service/ with dependency injection).
• Legacy Listeners/ package (split into purpose-specific files under listener/).
• Legacy Runnables/ duplicate.
• users.yml – auto-migrated into the database on first run; old file is renamed, not deleted, for safety.

📦 Upgrade notes

Drop the new jar in and start the server. On first run the plugin will:

1. Create plugins/boosCooldowns/cooldowns.db (SQLite) with V1–V4 schema applied.
2. Detect users.yml if present, migrate its contents into the DB, and rename the file to users.yml.migrated-<epoch>.
3. Keep every rule from the existing config.yml (the format is backward compatible – new keys default to backward-compatible values).

If you manage more than one server, point every instance at the same MySQL/MariaDB via the new database: section and set node_id per server.

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Earlier versions of boosCooldowns are tracked in the git history.