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kepler.gl

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kepler.gl is a webgl based application to visualize large scale location data in the browser

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"use strict"; var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault"); var _typeof = require("@babel/runtime/helpers/typeof"); Object.defineProperty(exports, "__esModule", { value: true }); exports.DuckDBWasmAdapter = void 0; var _regenerator = _interopRequireDefault(require("@babel/runtime/regenerator")); var _asyncToGenerator2 = _interopRequireDefault(require("@babel/runtime/helpers/asyncToGenerator")); var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck")); var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass")); var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty")); var _duckdbWasm = _interopRequireWildcard(require("@duckdb/duckdb-wasm")); var duckdb = _duckdbWasm; var _perf = require("../utils/perf"); function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(e) { return e ? t : r; })(e); } function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != _typeof(e) && "function" != typeof e) return { "default": e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n["default"] = e, t && t.set(e, n), n; } // SPDX-License-Identifier: MIT // Copyright contributors to the kepler.gl project var Connection = /*#__PURE__*/function () { function Connection(connection) { (0, _classCallCheck2["default"])(this, Connection); (0, _defineProperty2["default"])(this, "connection", void 0); this.connection = connection; } return (0, _createClass2["default"])(Connection, [{ key: "query", value: function () { var _query = (0, _asyncToGenerator2["default"])( /*#__PURE__*/_regenerator["default"].mark(function _callee(statement) { return _regenerator["default"].wrap(function _callee$(_context) { while (1) switch (_context.prev = _context.next) { case 0: return _context.abrupt("return", this.connection.query(statement)); case 1: case "end": return _context.stop(); } }, _callee, this); })); function query(_x) { return _query.apply(this, arguments); } return query; }() }, { key: "insertArrowTable", value: function () { var _insertArrowTable = (0, _asyncToGenerator2["default"])( /*#__PURE__*/_regenerator["default"].mark(function _callee2(arrowTable, params) { return _regenerator["default"].wrap(function _callee2$(_context2) { while (1) switch (_context2.prev = _context2.next) { case 0: _context2.next = 2; return this.connection.insertArrowTable(arrowTable, params); case 2: case "end": return _context2.stop(); } }, _callee2, this); })); function insertArrowTable(_x2, _x3) { return _insertArrowTable.apply(this, arguments); } return insertArrowTable; }() }, { key: "close", value: function () { var _close = (0, _asyncToGenerator2["default"])( /*#__PURE__*/_regenerator["default"].mark(function _callee3() { return _regenerator["default"].wrap(function _callee3$(_context3) { while (1) switch (_context3.prev = _context3.next) { case 0: _context3.next = 2; return this.connection.close(); case 2: case "end": return _context3.stop(); } }, _callee3, this); })); function close() { return _close.apply(this, arguments); } return close; }() }]); }(); var DuckDBWasmAdapter = exports.DuckDBWasmAdapter = /*#__PURE__*/function () { function DuckDBWasmAdapter(options) { (0, _classCallCheck2["default"])(this, DuckDBWasmAdapter); (0, _defineProperty2["default"])(this, "duckDB", void 0); // pass existing AsyncDuckDB object created elsewhere if (options instanceof Promise || options instanceof _duckdbWasm.AsyncDuckDB) { this.duckDB = options; return; } // or create a new AsyncDuckDB object var _ref = options || {}, _ref$debug = _ref.debug, debug = _ref$debug === void 0 ? false : _ref$debug, config = _ref.config; this.duckDB = initializeDuckDbWasm(config, debug); } return (0, _createClass2["default"])(DuckDBWasmAdapter, [{ key: "connect", value: function () { var _connect = (0, _asyncToGenerator2["default"])( /*#__PURE__*/_regenerator["default"].mark(function _callee4() { var db, c; return _regenerator["default"].wrap(function _callee4$(_context4) { while (1) switch (_context4.prev = _context4.next) { case 0: _context4.next = 2; return this.duckDB; case 2: db = _context4.sent; _context4.next = 5; return db.connect(); case 5: c = _context4.sent; return _context4.abrupt("return", new Connection(c)); case 7: case "end": return _context4.stop(); } }, _callee4, this); })); function connect() { return _connect.apply(this, arguments); } return connect; }() }, { key: "registerFileText", value: function () { var _registerFileText = (0, _asyncToGenerator2["default"])( /*#__PURE__*/_regenerator["default"].mark(function _callee5(filename, content) { var db; return _regenerator["default"].wrap(function _callee5$(_context5) { while (1) switch (_context5.prev = _context5.next) { case 0: _context5.next = 2; return this.duckDB; case 2: db = _context5.sent; _context5.next = 5; return db.registerFileText(filename, content); case 5: case "end": return _context5.stop(); } }, _callee5, this); })); function registerFileText(_x4, _x5) { return _registerFileText.apply(this, arguments); } return registerFileText; }() }, { key: "registerFileHandle", value: function () { var _registerFileHandle = (0, _asyncToGenerator2["default"])( /*#__PURE__*/_regenerator["default"].mark(function _callee6(name, handle, protocol, directIO) { var db; return _regenerator["default"].wrap(function _callee6$(_context6) { while (1) switch (_context6.prev = _context6.next) { case 0: _context6.next = 2; return this.duckDB; case 2: db = _context6.sent; _context6.next = 5; return db.registerFileHandle(name, handle, protocol, directIO); case 5: case "end": return _context6.stop(); } }, _callee6, this); })); function registerFileHandle(_x6, _x7, _x8, _x9) { return _registerFileHandle.apply(this, arguments); } return registerFileHandle; }() }]); }(); /** * Initialize DuckDB with a browser-specific Wasm bundle. */ var initializeDuckDbWasm = /*#__PURE__*/function () { var _ref2 = (0, _asyncToGenerator2["default"])( /*#__PURE__*/_regenerator["default"].mark(function _callee7(config, debug) { var start, JSDELIVR_BUNDLES, bundle, worker_url, worker, logger, db, res, buffer, fileNameMatch; return _regenerator["default"].wrap(function _callee7$(_context7) { while (1) switch (_context7.prev = _context7.next) { case 0: start = performance.now(); // Select a bundle based on browser checks JSDELIVR_BUNDLES = duckdb.getJsDelivrBundles(); _context7.next = 4; return duckdb.selectBundle(JSDELIVR_BUNDLES); case 4: bundle = _context7.sent; if (bundle.mainWorker) { _context7.next = 7; break; } throw new Error('Failed to initialize DuckDB'); case 7: worker_url = URL.createObjectURL(new Blob(["importScripts(\"".concat(bundle.mainWorker, "\");")], { type: 'text/javascript' })); // Instantiate the async version of DuckDB-wasm worker = new Worker(worker_url); logger = debug ? new duckdb.ConsoleLogger() : new duckdb.VoidLogger(); db = new _duckdbWasm.AsyncDuckDB(logger, worker); _context7.next = 13; return db.instantiate(bundle.mainModule, bundle.pthreadWorker); case 13: URL.revokeObjectURL(worker_url); if (!config) { _context7.next = 28; break; } if (!config.path) { _context7.next = 26; break; } _context7.next = 18; return fetch(config.path); case 18: res = _context7.sent; _context7.next = 21; return res.arrayBuffer(); case 21: buffer = _context7.sent; fileNameMatch = config.path.match(/[^/]*$/); if (fileNameMatch) { config.path = fileNameMatch[0]; } _context7.next = 26; return db.registerFileBuffer(config.path, new Uint8Array(buffer)); case 26: _context7.next = 28; return db.open(config); case 28: if (debug) { (0, _perf.logElapsedTime)('DuckDB initialized', start); if (config) { console.debug("DuckDbConfig: ".concat(JSON.stringify(config, null, 2))); } } return _context7.abrupt("return", db); case 30: case "end": return _context7.stop(); } }, _callee7); })); return function initializeDuckDbWasm(_x10, _x11) { return _ref2.apply(this, arguments); }; }(); //# 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SPDX-License-Identifier: MIT\n// Copyright contributors to the kepler.gl project\n\nimport * as arrow from 'apache-arrow';\nimport * as duckdb from '@duckdb/duckdb-wasm';\nimport {AsyncDuckDB, DuckDBConfig, AsyncDuckDBConnection} from '@duckdb/duckdb-wasm';\n\nimport {DatabaseAdapter, DatabaseConnection} from '@kepler.gl/utils';\n\nimport {logElapsedTime} from '../utils/perf';\n\nclass Connection implements DatabaseConnection {\n  private connection: AsyncDuckDBConnection;\n\n  constructor(connection: AsyncDuckDBConnection) {\n    this.connection = connection;\n  }\n\n  async query(statement: string): Promise<arrow.Table> {\n    return this.connection.query(statement);\n  }\n\n  async insertArrowTable(arrowTable: arrow.Table, params: {name: string}): Promise<void> {\n    await this.connection.insertArrowTable(arrowTable, params);\n  }\n\n  async close() {\n    await this.connection.close();\n  }\n}\n\ntype DuckDBWasmAdapterProps =\n  | {\n      debug?: boolean;\n      config?: DuckDBConfig;\n    }\n  | Promise<AsyncDuckDB>;\n\nexport class DuckDBWasmAdapter implements DatabaseAdapter {\n  private duckDB: Promise<AsyncDuckDB>;\n\n  constructor(options: DuckDBWasmAdapterProps) {\n    // pass existing AsyncDuckDB object created elsewhere\n    if (options instanceof Promise || options instanceof AsyncDuckDB) {\n      this.duckDB = options as any;\n      return;\n    }\n\n    // or create a new AsyncDuckDB object\n    const {debug = false, config} = options || {};\n    this.duckDB = initializeDuckDbWasm(config, debug);\n  }\n\n  async connect() {\n    const db = await this.duckDB;\n    const c = await db.connect();\n    return new Connection(c);\n  }\n\n  async registerFileText(filename: string, content) {\n    const db = await this.duckDB;\n    await db.registerFileText(filename, content);\n  }\n\n  async registerFileHandle(\n    name: string,\n    handle: any,\n    protocol: duckdb.DuckDBDataProtocol,\n    directIO: boolean\n  ): Promise<void> {\n    const db = await this.duckDB;\n    await db.registerFileHandle(name, handle, protocol, directIO);\n  }\n}\n\n/**\n * Initialize DuckDB with a browser-specific Wasm bundle.\n */\nconst initializeDuckDbWasm = async (\n  config?: DuckDBConfig,\n  debug?: boolean\n): Promise<AsyncDuckDB> => {\n  const start = performance.now();\n\n  // Select a bundle based on browser checks\n  const JSDELIVR_BUNDLES = duckdb.getJsDelivrBundles();\n  const bundle = await duckdb.selectBundle(JSDELIVR_BUNDLES);\n  if (!bundle.mainWorker) {\n    throw new Error('Failed to initialize DuckDB');\n  }\n\n  const worker_url = URL.createObjectURL(\n    new Blob([`importScripts(\"${bundle.mainWorker}\");`], {\n      type: 'text/javascript'\n    })\n  );\n\n  // Instantiate the async version of DuckDB-wasm\n  const worker = new Worker(worker_url);\n  const logger = debug ? new duckdb.ConsoleLogger() : new duckdb.VoidLogger();\n  const db = new AsyncDuckDB(logger, worker);\n  await db.instantiate(bundle.mainModule, 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