@trap_stevo/star-vault/dist/cjs/HUDControllers/StorageEngine.js

Deterministic data engine that eliminates query-time joins and enables normalized data execution. Architect secure, scalable, real-time systems with integrated sharding, encryption, and event-driven data flows. Manage hierarchical structures, execute adva

"use strict";

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function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
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function _arrayWithHoles(r) { if (Array.isArray(r)) return r; }
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function asyncGeneratorStep(n, t, e, r, o, a, c) { try { var i = n[a](c), u = i.value; } catch (n) { return void e(n); } i.done ? t(u) : Promise.resolve(u).then(r, o); }
function _asyncToGenerator(n) { return function () { var t = this, e = arguments; return new Promise(function (r, o) { var a = n.apply(t, e); function _next(n) { asyncGeneratorStep(a, r, o, _next, _throw, "next", n); } function _throw(n) { asyncGeneratorStep(a, r, o, _next, _throw, "throw", n); } _next(void 0); }); }; }
function _createForOfIteratorHelper(r, e) { var t = "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (!t) { if (Array.isArray(r) || (t = _unsupportedIterableToArray(r)) || e && r && "number" == typeof r.length) { t && (r = t); var _n = 0, F = function F() {}; return { s: F, n: function n() { return _n >= r.length ? { done: !0 } : { done: !1, value: r[_n++] }; }, e: function e(r) { throw r; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var o, a = !0, u = !1; return { s: function s() { t = t.call(r); }, n: function n() { var r = t.next(); return a = r.done, r; }, e: function e(r) { u = !0, o = r; }, f: function f() { try { a || null == t["return"] || t["return"](); } finally { if (u) throw o; } } }; }
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function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
function _classPrivateMethodInitSpec(e, a) { _checkPrivateRedeclaration(e, a), a.add(e); }
function _classPrivateFieldInitSpec(e, t, a) { _checkPrivateRedeclaration(e, t), t.set(e, a); }
function _checkPrivateRedeclaration(e, t) { if (t.has(e)) throw new TypeError("Cannot initialize the same private elements twice on an object"); }
function _classPrivateFieldGet(s, a) { return s.get(_assertClassBrand(s, a)); }
function _classPrivateFieldSet(s, a, r) { return s.set(_assertClassBrand(s, a), r), r; }
function _assertClassBrand(e, t, n) { if ("function" == typeof e ? e === t : e.has(t)) return arguments.length < 3 ? t : n; throw new TypeError("Private element is not present on this object"); }
function _defineProperties(e, r) { for (var t = 0; t < r.length; t++) { var o = r[t]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o); } }
function _createClass(e, r, t) { return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", { writable: !1 }), e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
var _require = require("async_hooks"),
  AsyncLocalStorage = _require.AsyncLocalStorage;
var path = require("path");
var fs = require("fs");
var ShardLockManager = require("../HUDManagers/ShardLockManager.js");
var AsyncMutex = require("./AsyncMutex.js");
var shardLockContext = new AsyncLocalStorage();
var PendingWrite = /*#__PURE__*/_createClass(function PendingWrite(buffer) {
  _classCallCheck(this, PendingWrite);
  this.promise = null;
  this.resolve = null;
  this.reject = null;
  this.filePath = null;
  this.offset = null;
  this.buffer = buffer;
});
var _dbPath = /*#__PURE__*/new WeakMap();
var _shardCount = /*#__PURE__*/new WeakMap();
var _fileMode = /*#__PURE__*/new WeakMap();
var _dirMode = /*#__PURE__*/new WeakMap();
var _indexByCollection = /*#__PURE__*/new WeakMap();
var _pendingWritesByCollection = /*#__PURE__*/new WeakMap();
var _pendingCollections = /*#__PURE__*/new WeakMap();
var _collectionMatchCacheTTLms = /*#__PURE__*/new WeakMap();
var _collectionMatchCache = /*#__PURE__*/new WeakMap();
var _collectionsCacheTTLms = /*#__PURE__*/new WeakMap();
var _collectionsCache = /*#__PURE__*/new WeakMap();
var _knownCollections = /*#__PURE__*/new WeakMap();
var _collectionsEpoch = /*#__PURE__*/new WeakMap();
var _metaDir = /*#__PURE__*/new WeakMap();
var _compactionDir = /*#__PURE__*/new WeakMap();
var _metricsFile = /*#__PURE__*/new WeakMap();
var _countersDir = /*#__PURE__*/new WeakMap();
var _locksDir = /*#__PURE__*/new WeakMap();
var _compaction = /*#__PURE__*/new WeakMap();
var _metrics = /*#__PURE__*/new WeakMap();
var _metricsDirty = /*#__PURE__*/new WeakMap();
var _metricsDirtyCollections = /*#__PURE__*/new WeakMap();
var _metricsFlushTimer = /*#__PURE__*/new WeakMap();
var _lastMetricsFlushAt = /*#__PURE__*/new WeakMap();
var _metricsFlushIntervalMs = /*#__PURE__*/new WeakMap();
var _shardSizeCache = /*#__PURE__*/new WeakMap();
var _counters = /*#__PURE__*/new WeakMap();
var _opts = /*#__PURE__*/new WeakMap();
var _compactionEnabled = /*#__PURE__*/new WeakMap();
var _compactionIdleMs = /*#__PURE__*/new WeakMap();
var _compactionCooldownMs = /*#__PURE__*/new WeakMap();
var _compactionTickMs = /*#__PURE__*/new WeakMap();
var _compactionMaxCollectionsPerTick = /*#__PURE__*/new WeakMap();
var _compactionMaxShardsPerCollectionPerTick = /*#__PURE__*/new WeakMap();
var _compactionLastWriteAtByCollection = /*#__PURE__*/new WeakMap();
var _compactionLastCompactionAtByCollection = /*#__PURE__*/new WeakMap();
var _compactionPendingCollections = /*#__PURE__*/new WeakMap();
var _compactionTickTimer = /*#__PURE__*/new WeakMap();
var _fdCache = /*#__PURE__*/new WeakMap();
var _fdCacheMax = /*#__PURE__*/new WeakMap();
var _fdCacheTTLms = /*#__PURE__*/new WeakMap();
var _idxFdCache = /*#__PURE__*/new WeakMap();
var _idxFdCacheMax = /*#__PURE__*/new WeakMap();
var _idxFdCacheTTLms = /*#__PURE__*/new WeakMap();
var _idxLastCheckAtByShard = /*#__PURE__*/new WeakMap();
var _idxCheckIntervalMs = /*#__PURE__*/new WeakMap();
var _idxSizeCache = /*#__PURE__*/new WeakMap();
var _idxDirtyShards = /*#__PURE__*/new WeakMap();
var _idxDirtyPaths = /*#__PURE__*/new WeakMap();
var _idxFlushTimer = /*#__PURE__*/new WeakMap();
var _lastIDXFlushAt = /*#__PURE__*/new WeakMap();
var _idxFlushIntervalMs = /*#__PURE__*/new WeakMap();
var _idxSeenSizeByShard = /*#__PURE__*/new WeakMap();
var _idxResyncTimer = /*#__PURE__*/new WeakMap();
var _idxFsyncMode = /*#__PURE__*/new WeakMap();
var _fdReaperTimer = /*#__PURE__*/new WeakMap();
var _u = /*#__PURE__*/new WeakMap();
var _u2 = /*#__PURE__*/new WeakMap();
var _shardLockManager = /*#__PURE__*/new WeakMap();
var _mutexByShard = /*#__PURE__*/new WeakMap();
var _leaseStateByShardKey = /*#__PURE__*/new WeakMap();
var _debugStats = /*#__PURE__*/new WeakMap();
var _StorageEngine_brand = /*#__PURE__*/new WeakSet();
var StorageEngine = /*#__PURE__*/function () {
  function StorageEngine(dbPath) {
    var _this = this;
    var shardCount = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 4;
    var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
    _classCallCheck(this, StorageEngine);
    _classPrivateMethodInitSpec(this, _StorageEngine_brand);
    _classPrivateFieldInitSpec(this, _dbPath, void 0);
    _classPrivateFieldInitSpec(this, _shardCount, void 0);
    _classPrivateFieldInitSpec(this, _fileMode, void 0);
    _classPrivateFieldInitSpec(this, _dirMode, void 0);
    _classPrivateFieldInitSpec(this, _indexByCollection, void 0);
    _classPrivateFieldInitSpec(this, _pendingWritesByCollection, new Map());
    _classPrivateFieldInitSpec(this, _pendingCollections, new Set());
    _classPrivateFieldInitSpec(this, _collectionMatchCacheTTLms, void 0);
    _classPrivateFieldInitSpec(this, _collectionMatchCache, void 0);
    _classPrivateFieldInitSpec(this, _collectionsCacheTTLms, void 0);
    _classPrivateFieldInitSpec(this, _collectionsCache, void 0);
    _classPrivateFieldInitSpec(this, _knownCollections, void 0);
    _classPrivateFieldInitSpec(this, _collectionsEpoch, void 0);
    _classPrivateFieldInitSpec(this, _metaDir, void 0);
    _classPrivateFieldInitSpec(this, _compactionDir, void 0);
    _classPrivateFieldInitSpec(this, _metricsFile, void 0);
    _classPrivateFieldInitSpec(this, _countersDir, void 0);
    _classPrivateFieldInitSpec(this, _locksDir, void 0);
    _classPrivateFieldInitSpec(this, _compaction, void 0);
    _classPrivateFieldInitSpec(this, _metrics, void 0);
    _classPrivateFieldInitSpec(this, _metricsDirty, void 0);
    _classPrivateFieldInitSpec(this, _metricsDirtyCollections, void 0);
    _classPrivateFieldInitSpec(this, _metricsFlushTimer, void 0);
    _classPrivateFieldInitSpec(this, _lastMetricsFlushAt, void 0);
    _classPrivateFieldInitSpec(this, _metricsFlushIntervalMs, void 0);
    _classPrivateFieldInitSpec(this, _shardSizeCache, void 0);
    _classPrivateFieldInitSpec(this, _counters, void 0);
    _classPrivateFieldInitSpec(this, _opts, void 0);
    _classPrivateFieldInitSpec(this, _compactionEnabled, void 0);
    _classPrivateFieldInitSpec(this, _compactionIdleMs, void 0);
    _classPrivateFieldInitSpec(this, _compactionCooldownMs, void 0);
    _classPrivateFieldInitSpec(this, _compactionTickMs, void 0);
    _classPrivateFieldInitSpec(this, _compactionMaxCollectionsPerTick, void 0);
    _classPrivateFieldInitSpec(this, _compactionMaxShardsPerCollectionPerTick, void 0);
    _classPrivateFieldInitSpec(this, _compactionLastWriteAtByCollection, void 0);
    _classPrivateFieldInitSpec(this, _compactionLastCompactionAtByCollection, void 0);
    _classPrivateFieldInitSpec(this, _compactionPendingCollections, void 0);
    _classPrivateFieldInitSpec(this, _compactionTickTimer, void 0);
    _classPrivateFieldInitSpec(this, _fdCache, void 0);
    _classPrivateFieldInitSpec(this, _fdCacheMax, void 0);
    _classPrivateFieldInitSpec(this, _fdCacheTTLms, void 0);
    _classPrivateFieldInitSpec(this, _idxFdCache, void 0);
    _classPrivateFieldInitSpec(this, _idxFdCacheMax, void 0);
    _classPrivateFieldInitSpec(this, _idxFdCacheTTLms, void 0);
    _classPrivateFieldInitSpec(this, _idxLastCheckAtByShard, void 0);
    _classPrivateFieldInitSpec(this, _idxCheckIntervalMs, void 0);
    _classPrivateFieldInitSpec(this, _idxSizeCache, void 0);
    _classPrivateFieldInitSpec(this, _idxDirtyShards, void 0);
    _classPrivateFieldInitSpec(this, _idxDirtyPaths, void 0);
    _classPrivateFieldInitSpec(this, _idxFlushTimer, void 0);
    _classPrivateFieldInitSpec(this, _lastIDXFlushAt, void 0);
    _classPrivateFieldInitSpec(this, _idxFlushIntervalMs, void 0);
    _classPrivateFieldInitSpec(this, _idxSeenSizeByShard, void 0);
    _classPrivateFieldInitSpec(this, _idxResyncTimer, void 0);
    _classPrivateFieldInitSpec(this, _idxFsyncMode, void 0);
    _classPrivateFieldInitSpec(this, _fdReaperTimer, void 0);
    _classPrivateFieldInitSpec(this, _u, void 0);
    _classPrivateFieldInitSpec(this, _u2, void 0);
    _classPrivateFieldInitSpec(this, _shardLockManager, void 0);
    _classPrivateFieldInitSpec(this, _mutexByShard, void 0);
    _classPrivateFieldInitSpec(this, _leaseStateByShardKey, void 0);
    _classPrivateFieldInitSpec(this, _debugStats, void 0);
    var _options$dirMode = options.dirMode,
      _dirMode2 = _options$dirMode === void 0 ? 448 : _options$dirMode,
      _options$fileMode = options.fileMode,
      _fileMode2 = _options$fileMode === void 0 ? 384 : _options$fileMode;
    _classPrivateFieldSet(_dbPath, this, dbPath);
    _classPrivateFieldSet(_shardCount, this, shardCount);
    _classPrivateFieldSet(_fileMode, this, _fileMode2);
    _classPrivateFieldSet(_dirMode, this, _dirMode2);
    _classPrivateFieldSet(_opts, this, options);
    if (!fs.existsSync(dbPath)) {
      fs.mkdirSync(dbPath, {
        recursive: true,
        mode: _classPrivateFieldGet(_dirMode, this)
      });
    }
    _classPrivateFieldSet(_indexByCollection, this, new Map());
    _classPrivateFieldSet(_collectionMatchCacheTTLms, this, typeof _classPrivateFieldGet(_opts, this).collectionMatchCacheTTLms === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).collectionMatchCacheTTLms) ? Math.max(0, Math.floor(_classPrivateFieldGet(_opts, this).collectionMatchCacheTTLms)) : 1000);
    _classPrivateFieldSet(_collectionMatchCache, this, null);
    _classPrivateFieldSet(_collectionsCacheTTLms, this, typeof _classPrivateFieldGet(_opts, this).collectionsCacheTTLms === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).collectionsCacheTTLms) ? Math.max(0, Math.floor(_classPrivateFieldGet(_opts, this).collectionsCacheTTLms)) : 1000);
    _classPrivateFieldSet(_collectionsCache, this, null);
    _classPrivateFieldSet(_knownCollections, this, new Set());
    _classPrivateFieldSet(_collectionsEpoch, this, 0);
    _classPrivateFieldSet(_debugStats, this, {
      listCollections: {
        calls: 0,
        cacheHits: 0,
        cacheMisses: 0,
        uncachedCalls: 0,
        uncachedMsTotal: 0,
        uncachedMsBest: Infinity,
        uncachedMsWorst: 0
      },
      getMatchingCollections: {
        calls: 0,
        cacheHits: 0,
        cacheMisses: 0
      }
    });
    _classPrivateFieldSet(_compaction, this, new Map());
    _classPrivateFieldSet(_counters, this, new Map());
    _classPrivateFieldSet(_metaDir, this, path.join(_classPrivateFieldGet(_dbPath, this), ".meta"));
    _classPrivateFieldSet(_compactionDir, this, path.join(_classPrivateFieldGet(_dbPath, this), ".compaction"));
    _assertClassBrand(_StorageEngine_brand, this, _ensureDir).call(this, _classPrivateFieldGet(_metaDir, this), _classPrivateFieldGet(_dirMode, this));
    _assertClassBrand(_StorageEngine_brand, this, _ensureDir).call(this, _classPrivateFieldGet(_compactionDir, this), _classPrivateFieldGet(_dirMode, this));
    _classPrivateFieldSet(_metricsFile, this, path.join(_classPrivateFieldGet(_metaDir, this), "metrics.json"));
    _classPrivateFieldSet(_countersDir, this, path.join(_classPrivateFieldGet(_metaDir, this), "counters"));
    _assertClassBrand(_StorageEngine_brand, this, _ensureDir).call(this, _classPrivateFieldGet(_countersDir, this), _classPrivateFieldGet(_dirMode, this));
    _classPrivateFieldSet(_locksDir, this, path.join(_classPrivateFieldGet(_metaDir, this), "locks"));
    _assertClassBrand(_StorageEngine_brand, this, _ensureDir).call(this, _classPrivateFieldGet(_locksDir, this), _classPrivateFieldGet(_dirMode, this));
    _classPrivateFieldSet(_shardLockManager, this, new ShardLockManager(_classPrivateFieldGet(_locksDir, this), {
      instanceId: typeof _classPrivateFieldGet(_opts, this).instanceId === "string" && _classPrivateFieldGet(_opts, this).instanceId ? _classPrivateFieldGet(_opts, this).instanceId : null,
      leaseTTLms: typeof _classPrivateFieldGet(_opts, this).leaseTTLms === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).leaseTTLms) ? Math.max(10, Math.floor(_classPrivateFieldGet(_opts, this).leaseTTLms)) : 250,
      retryDelayMs: typeof _classPrivateFieldGet(_opts, this).leaseRetryDelayMs === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).leaseRetryDelayMs) ? Math.max(0, Math.floor(_classPrivateFieldGet(_opts, this).leaseRetryDelayMs)) : 3
    }));
    _classPrivateFieldSet(_mutexByShard, this, new Map());
    _classPrivateFieldSet(_leaseStateByShardKey, this, new Map());
    _classPrivateFieldSet(_fdCache, this, new Map());
    _classPrivateFieldSet(_fdCacheMax, this, typeof _classPrivateFieldGet(_opts, this).fdCacheMax === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).fdCacheMax) ? Math.max(8, Math.floor(_classPrivateFieldGet(_opts, this).fdCacheMax)) : 128);
    _classPrivateFieldSet(_fdCacheTTLms, this, typeof _classPrivateFieldGet(_opts, this).fdCacheTTLms === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).fdCacheTTLms) ? Math.max(25, Math.floor(_classPrivateFieldGet(_opts, this).fdCacheTTLms)) : 30000);
    _classPrivateFieldSet(_idxFdCache, this, new Map());
    _classPrivateFieldSet(_idxFdCacheMax, this, typeof _classPrivateFieldGet(_opts, this).idxFdCacheMax === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).idxFdCacheMax) ? Math.max(8, Math.floor(_classPrivateFieldGet(_opts, this).idxFdCacheMax)) : 128);
    _classPrivateFieldSet(_idxFdCacheTTLms, this, typeof _classPrivateFieldGet(_opts, this).idxFdCacheTTLms === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).idxFdCacheTTLms) ? Math.max(25, Math.floor(_classPrivateFieldGet(_opts, this).idxFdCacheTTLms)) : 30000);
    _classPrivateFieldSet(_idxLastCheckAtByShard, this, new Map());
    _classPrivateFieldSet(_idxCheckIntervalMs, this, 25);
    _classPrivateFieldSet(_idxSizeCache, this, new Map());
    _classPrivateFieldSet(_idxSeenSizeByShard, this, new Map());
    _classPrivateFieldSet(_idxDirtyShards, this, new Set());
    _classPrivateFieldSet(_idxDirtyPaths, this, new Set());
    _classPrivateFieldSet(_idxFlushTimer, this, null);
    _classPrivateFieldSet(_lastIDXFlushAt, this, 0);
    _classPrivateFieldSet(_idxFlushIntervalMs, this, typeof _classPrivateFieldGet(_opts, this).idxFlushIntervalMs === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).idxFlushIntervalMs) ? Math.max(10, Math.floor(_classPrivateFieldGet(_opts, this).idxFlushIntervalMs)) : 50);
    _classPrivateFieldSet(_idxFsyncMode, this, typeof _classPrivateFieldGet(_opts, this).idxSyncMode === "string" ? String(_classPrivateFieldGet(_opts, this).idxSyncMode) : "interval");
    _classPrivateFieldSet(_u, this, Buffer.alloc(4));
    _classPrivateFieldSet(_u2, this, Buffer.alloc(8));
    this.loadIndexes();
    var loadedMetrics = _assertClassBrand(_StorageEngine_brand, this, _readJSON).call(this, _classPrivateFieldGet(_metricsFile, this));
    if (loadedMetrics && loadedMetrics.collections) {
      _classPrivateFieldSet(_metrics, this, {
        collections: new Map(Object.entries(loadedMetrics.collections))
      });
    } else {
      _classPrivateFieldSet(_metrics, this, {
        collections: new Map()
      });
    }
    _classPrivateFieldSet(_metricsDirty, this, false);
    _classPrivateFieldSet(_metricsDirtyCollections, this, new Set());
    _classPrivateFieldSet(_metricsFlushTimer, this, null);
    _classPrivateFieldSet(_lastMetricsFlushAt, this, 0);
    _classPrivateFieldSet(_metricsFlushIntervalMs, this, typeof _classPrivateFieldGet(_opts, this).metricsFlushIntervalMs === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).metricsFlushIntervalMs) ? Math.max(10, Math.floor(_classPrivateFieldGet(_opts, this).metricsFlushIntervalMs)) : 50);
    _classPrivateFieldSet(_shardSizeCache, this, new Map());
    _assertClassBrand(_StorageEngine_brand, this, _recoverCompactionResidues).call(this);
    try {
      var _iterator = _createForOfIteratorHelper(_assertClassBrand(_StorageEngine_brand, this, _listCollectionsUncached).call(this, _classPrivateFieldGet(_dbPath, this), "")),
        _step;
      try {
        for (_iterator.s(); !(_step = _iterator.n()).done;) {
          var collection = _step.value;
          _assertClassBrand(_StorageEngine_brand, this, _refreshFileBytes).call(this, collection);
        }
      } catch (err) {
        _iterator.e(err);
      } finally {
        _iterator.f();
      }
    } catch (_unused) {}
    _classPrivateFieldSet(_compactionEnabled, this, _classPrivateFieldGet(_opts, this).compactionEnabled !== false);
    _classPrivateFieldSet(_compactionIdleMs, this, typeof _classPrivateFieldGet(_opts, this).compactionIdleMs === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).compactionIdleMs) ? Math.max(50, Math.floor(_classPrivateFieldGet(_opts, this).compactionIdleMs)) : 2500);
    _classPrivateFieldSet(_compactionCooldownMs, this, typeof _classPrivateFieldGet(_opts, this).compactionCooldownMs === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).compactionCooldownMs) ? Math.max(0, Math.floor(_classPrivateFieldGet(_opts, this).compactionCooldownMs)) : 60000);
    _classPrivateFieldSet(_compactionTickMs, this, typeof _classPrivateFieldGet(_opts, this).compactionTickMs === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).compactionTickMs) ? Math.max(25, Math.floor(_classPrivateFieldGet(_opts, this).compactionTickMs)) : 200);
    _classPrivateFieldSet(_compactionMaxCollectionsPerTick, this, typeof _classPrivateFieldGet(_opts, this).compactionMaxCollectionsPerTick === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).compactionMaxCollectionsPerTick) ? Math.max(1, Math.floor(_classPrivateFieldGet(_opts, this).compactionMaxCollectionsPerTick)) : 1);
    _classPrivateFieldSet(_compactionMaxShardsPerCollectionPerTick, this, typeof _classPrivateFieldGet(_opts, this).compactionMaxShardsPerCollectionPerTick === "number" && Number.isFinite(_classPrivateFieldGet(_opts, this).compactionMaxShardsPerCollectionPerTick) ? Math.max(1, Math.floor(_classPrivateFieldGet(_opts, this).compactionMaxShardsPerCollectionPerTick)) : 1);
    _classPrivateFieldSet(_compactionLastWriteAtByCollection, this, new Map());
    _classPrivateFieldSet(_compactionLastCompactionAtByCollection, this, new Map());
    _classPrivateFieldSet(_compactionPendingCollections, this, new Set());
    _classPrivateFieldSet(_compactionTickTimer, this, null);
    if (_classPrivateFieldGet(_compactionEnabled, this) === true) {
      _assertClassBrand(_StorageEngine_brand, this, _scheduleCompactionTick).call(this);
    }
    _classPrivateFieldSet(_idxResyncTimer, this, setInterval(function () {
      try {
        var batch = Array.from(_classPrivateFieldGet(_idxDirtyShards, _this).values());
        _classPrivateFieldGet(_idxDirtyShards, _this).clear();
        for (var _i = 0, _batch = batch; _i < _batch.length; _i++) {
          var shardKey = _batch[_i];
          var parts = String(shardKey).split("::");
          var _collection = parts[0];
          var shard = Number(parts[1]);
          _assertClassBrand(_StorageEngine_brand, _this, _tailSyncIDXIntoMaps).call(_this, _collection, shard);
        }
      } catch (_unused2) {}
    }, 250));
    try {
      _classPrivateFieldGet(_idxResyncTimer, this).unref();
    } catch (_unused3) {}
    _classPrivateFieldSet(_fdReaperTimer, this, setInterval(function () {
      try {
        _assertClassBrand(_StorageEngine_brand, _this, _releaseFDsNow).call(_this);
      } catch (_unused4) {}
      try {
        _assertClassBrand(_StorageEngine_brand, _this, _releaseIDXFDsNow).call(_this);
      } catch (_unused5) {}
    }, Math.max(50, Math.floor(Math.min(_classPrivateFieldGet(_fdCacheTTLms, this), _classPrivateFieldGet(_idxFdCacheTTLms, this)) / 2))));
    try {
      _classPrivateFieldGet(_fdReaperTimer, this).unref();
    } catch (_unused6) {}
  }
  return _createClass(StorageEngine, [{
    key: "getShardFile",
    value: function getShardFile(collection, shard) {
      return path.join(_classPrivateFieldGet(_dbPath, this), "".concat(collection, "_shard_").concat(shard, ".ldb"));
    }
  }, {
    key: "getIndexFile",
    value: function getIndexFile(collection, shard) {
      return path.join(_classPrivateFieldGet(_dbPath, this), "".concat(collection, "_shard_").concat(shard, ".idx"));
    }
  }, {
    key: "getShardID",
    value: function getShardID(id) {
      var _classPrivateFieldGet2;
      if (typeof id === "number" && Number.isFinite(id)) {
        return Math.abs(id) % _classPrivateFieldGet(_shardCount, this);
      }
      if ((_classPrivateFieldGet2 = _classPrivateFieldGet(_opts, this)) !== null && _classPrivateFieldGet2 !== void 0 && _classPrivateFieldGet2.shardHashFn) {
        var _h = _classPrivateFieldGet(_opts, this).shardHashFn(String(id));
        return (_h >>> 0) % _classPrivateFieldGet(_shardCount, this);
      }
      var s = String(id);
      if (s.length <= 8 && /^[0-9a-z]+$/i.test(s)) {
        var n = parseInt(s, 36);
        if (Number.isFinite(n)) {
          return n % _classPrivateFieldGet(_shardCount, this);
        }
      }
      var h = 2166136261;
      for (var i = 0; i < s.length; i++) {
        h ^= s.charCodeAt(i);
        h = Math.imul(h, 16777619);
      }
      return (h >>> 0) % _classPrivateFieldGet(_shardCount, this);
    }
  }, {
    key: "write",
    value: function () {
      var _write = _asyncToGenerator(/*#__PURE__*/_regeneratorRuntime().mark(function _callee2(collection, id, value) {
        var _this2 = this;
        var shard, shardKey, colPending, valueBuffer, pw;
        return _regeneratorRuntime().wrap(function _callee2$(_context2) {
          while (1) switch (_context2.prev = _context2.next) {
            case 0:
              shard = this.getShardID(id);
              shardKey = "".concat(collection, "::").concat(shard);
              colPending = _classPrivateFieldGet(_pendingWritesByCollection, this).get(collection);
              if (!colPending) {
                colPending = new Map();
                _classPrivateFieldGet(_pendingWritesByCollection, this).set(collection, colPending);
              }
              _context2.prev = 4;
              valueBuffer = Buffer.from(JSON.stringify(value));
              _context2.next = 12;
              break;
            case 8:
              _context2.prev = 8;
              _context2.t0 = _context2["catch"](4);
              if (typeof _classPrivateFieldGet(_opts, this).onWriteError === "function") {
                _classPrivateFieldGet(_opts, this).onWriteError(_context2.t0, {
                  collection: collection,
                  id: id,
                  value: value
                });
              }
              return _context2.abrupt("return", {
                id: id,
                error: "serialization_failed"
              });
            case 12:
              pw = new PendingWrite(valueBuffer);
              pw.promise = new Promise(function (resolve, reject) {
                pw.resolve = resolve;
                pw.reject = reject;
              });
              colPending.set(String(id), pw);
              _classPrivateFieldGet(_pendingCollections, this).add(collection);
              _assertClassBrand(_StorageEngine_brand, this, _invalidateCollectionsCache).call(this);
              return _context2.abrupt("return", _assertClassBrand(_StorageEngine_brand, this, _withShardLeaseLock).call(this, shardKey, /*#__PURE__*/_asyncToGenerator(/*#__PURE__*/_regeneratorRuntime().mark(function _callee() {
                var _c$shards, prevPointer, prevLen, m, filePath, indexPath, knownCollection, appendRes, offset, appendedBytes, pendingNow, pw2, c, shardState, _pendingNow, _pw;
                return _regeneratorRuntime().wrap(function _callee$(_context) {
                  while (1) switch (_context.prev = _context.next) {
                    case 0:
                      _context.prev = 0;
                      _assertClassBrand(_StorageEngine_brand, _this2, _noteWriteActivity).call(_this2, collection);
                      prevPointer = _assertClassBrand(_StorageEngine_brand, _this2, _getPointer).call(_this2, collection, id);
                      prevLen = prevPointer ? _assertClassBrand(_StorageEngine_brand, _this2, _readValueLength).call(_this2, prevPointer.filePath, prevPointer.offset) : 0;
                      m = _classPrivateFieldGet(_metrics, _this2).collections.get(collection) || {
                        fileBytes: 0,
                        liveBytes: 0,
                        updates: 0,
                        lastVacuumAt: 0
                      };
                      m.liveBytes += Math.max(0, valueBuffer.length - prevLen);
                      m.updates += 1;
                      _classPrivateFieldGet(_metrics, _this2).collections.set(collection, m);
                      filePath = _this2.getShardFile(collection, shard);
                      indexPath = _this2.getIndexFile(collection, shard);
                      knownCollection = _classPrivateFieldGet(_knownCollections, _this2).has(String(collection));
                      appendRes = _assertClassBrand(_StorageEngine_brand, _this2, _appendRecord).call(_this2, filePath, indexPath, id, valueBuffer, {
                        updateIndexMap: true,
                        collection: collection
                      });
                      if (knownCollection !== true) {
                        _classPrivateFieldGet(_knownCollections, _this2).add(String(collection));
                        _assertClassBrand(_StorageEngine_brand, _this2, _invalidateCollectionsCache).call(_this2);
                      }
                      offset = appendRes && typeof appendRes.offset === "number" ? appendRes.offset : 0;
                      appendedBytes = appendRes && typeof appendRes.bytes === "number" ? appendRes.bytes : 0;
                      m.fileBytes = (m.fileBytes || 0) + appendedBytes;
                      _classPrivateFieldGet(_metrics, _this2).collections.set(collection, m);
                      _assertClassBrand(_StorageEngine_brand, _this2, _markMetricsDirty).call(_this2, collection);
                      if (appendRes && appendRes.updatedIndexMap !== true) {
                        _classPrivateFieldGet(_idxDirtyShards, _this2).add("".concat(collection, "::").concat(shard));
                      }
                      pendingNow = _classPrivateFieldGet(_pendingWritesByCollection, _this2).get(collection);
                      if (pendingNow) {
                        pw2 = pendingNow.get(String(id));
                        if (pw2 && _typeof(pw2) === "object") {
                          pw2.filePath = filePath;
                          pw2.offset = offset;
                          if (pw2.resolve) {
                            try {
                              pw2.resolve({
                                id: id,
                                offset: offset
                              });
                            } catch (_unused7) {}
                          }
                        }
                      }
                      c = _classPrivateFieldGet(_compaction, _this2).get(collection);
                      shardState = c === null || c === void 0 || (_c$shards = c.shards) === null || _c$shards === void 0 ? void 0 : _c$shards.get(shard);
                      if (shardState && shardState.phase === "copying" && shardState.doubleWrite === true && shardState.tmpLDB && shardState.tmpIDX) {
                        try {
                          _assertClassBrand(_StorageEngine_brand, _this2, _appendRecord).call(_this2, shardState.tmpLDB, shardState.tmpIDX, id, valueBuffer, {
                            updateIndexMap: false,
                            collection: collection
                          });
                          shardState.relocated.add(id);
                          _assertClassBrand(_StorageEngine_brand, _this2, _writeCompactionState).call(_this2, collection, shard, _assertClassBrand(_StorageEngine_brand, _this2, _exportShardState).call(_this2, collection, shard, shardState));
                        } catch (_unused8) {
                          shardState.relocated.add(id);
                          _assertClassBrand(_StorageEngine_brand, _this2, _writeCompactionState).call(_this2, collection, shard, _assertClassBrand(_StorageEngine_brand, _this2, _exportShardState).call(_this2, collection, shard, shardState));
                        }
                      }
                      _assertClassBrand(_StorageEngine_brand, _this2, _clearPendingWrite).call(_this2, collection, String(id));
                      return _context.abrupt("return", {
                        id: id,
                        value: value,
                        offset: offset
                      });
                    case 28:
                      _context.prev = 28;
                      _context.t0 = _context["catch"](0);
                      _pendingNow = _classPrivateFieldGet(_pendingWritesByCollection, _this2).get(collection);
                      if (_pendingNow) {
                        _pw = _pendingNow.get(String(id));
                        if (_pw && _pw.reject) {
                          try {
                            _pw.reject(_context.t0);
                          } catch (_unused9) {}
                        }
                      }
                      _assertClassBrand(_StorageEngine_brand, _this2, _clearPendingWrite).call(_this2, collection, String(id));
                      throw _context.t0;
                    case 34:
                    case "end":
                      return _context.stop();
                  }
                }, _callee, null, [[0, 28]]);
              }))));
            case 18:
            case "end":
              return _context2.stop();
          }
        }, _callee2, this, [[4, 8]]);
      }));
      function write(_x, _x2, _x3) {
        return _write.apply(this, arguments);
      }
      return write;
    }()
  }, {
    key: "read",
    value: function read(collection, id) {
      var _classPrivateFieldGet3;
      var sid = String(id);
      var pw = (_classPrivateFieldGet3 = _classPrivateFieldGet(_pendingWritesByCollection, this).get(collection)) === null || _classPrivateFieldGet3 === void 0 ? void 0 : _classPrivateFieldGet3.get(sid);
      if (pw) {
        if (pw.buffer) {
          try {
            return JSON.parse(pw.buffer.toString("utf8"));
          } catch (_unused10) {
            return null;
          }
        }
        if (pw.filePath != null && pw.offset != null) {
          return _assertClassBrand(_StorageEngine_brand, this, _readRecordCached).call(this, pw.filePath, pw.offset, sid);
        }
        return null;
      }
      var pointer = _assertClassBrand(_StorageEngine_brand, this, _getPointer).call(this, collection, sid);
      if (!pointer) {
        return null;
      }
      return _assertClassBrand(_StorageEngine_brand, this, _readRecordCached).call(this, pointer.filePath, pointer.offset, sid);
    }
  }, {
    key: "readMany",
    value: function readMany(collection, ids) {
      var _this3 = this;
      var groups = new Map();
      var _iterator2 = _createForOfIteratorHelper(ids),
        _step2;
      try {
        for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
          var id = _step2.value;
          var sid = String(id);
          var s = this.getShardID(sid);
          if (!groups.has(s)) {
            groups.set(s, []);
          }
          groups.get(s).push(sid);
        }
      } catch (err) {
        _iterator2.e(err);
      } finally {
        _iterator2.f();
      }
      var out = new Map();
      var _iterator3 = _createForOfIteratorHelper(groups.entries()),
        _step3;
      try {
        var _loop = function _loop() {
          var _step3$value = _slicedToArray(_step3.value, 2),
            shard = _step3$value[0],
            bucket = _step3$value[1];
          var ldb = _this3.getShardFile(collection, shard);
          var pending = _classPrivateFieldGet(_pendingWritesByCollection, _this3).get(collection);
          var hasPendingForShard = pending ? bucket.some(function (id) {
            return pending.has(String(id));
          }) : false;
          if (!fs.existsSync(ldb) && !hasPendingForShard) {
            return 1; // continue
          }
          var _iterator4 = _createForOfIteratorHelper(bucket),
            _step4;
          try {
            for (_iterator4.s(); !(_step4 = _iterator4.n()).done;) {
              var _id = _step4.value;
              var raw = _this3.read(collection, _id);
              if (raw !== null) {
                out.set(_id, raw);
              }
            }
          } catch (err) {
            _iterator4.e(err);
          } finally {
            _iterator4.f();
          }
        };
        for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {
          if (_loop()) continue;
        }
      } catch (err) {
        _iterator3.e(err);
      } finally {
        _iterator3.f();
      }
      return out;
    }
  }, {
    key: "iterate",
    value: function iterate(collection) {
      var _this4 = this;
      var _ref2 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
        _ref2$strictMatch = _ref2.strictMatch,
        strictMatch = _ref2$strictMatch === void 0 ? false : _ref2$strictMatch,
        _ref2$shards = _ref2.shards,
        shards = _ref2$shards === void 0 ? null : _ref2$shards,
        _ref2$max = _ref2.max,
        max = _ref2$max === void 0 ? Infinity : _ref2$max;
      var visitor = arguments.length > 2 ? arguments[2] : undefined;
      var normalized = String(collection).replace(/\\/g, "/");
      var visited = 0;
      var matchedCollections = this.getMatchingCollections(normalized, strictMatch);
      var _iterator5 = _createForOfIteratorHelper(matchedCollections),
        _step5;
      try {
        var _loop2 = function _loop2() {
            var col = _step5.value;
            var colMap = _classPrivateFieldGet(_indexByCollection, _this4).get(col);
            var pending = _classPrivateFieldGet(_pendingWritesByCollection, _this4).get(col);
            var ids = new Set();
            if (colMap) {
              var _iterator6 = _createForOfIteratorHelper(colMap.keys()),
                _step6;
              try {
                for (_iterator6.s(); !(_step6 = _iterator6.n()).done;) {
                  var id = _step6.value;
                  ids.add(String(id));
                }
              } catch (err) {
                _iterator6.e(err);
              } finally {
                _iterator6.f();
              }
            }
            if (pending) {
              var _iterator7 = _createForOfIteratorHelper(pending.keys()),
                _step7;