kepler.gl
Version:
kepler.gl is a webgl based application to visualize large scale location data in the browser
434 lines (350 loc) • 33.7 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.isGeoJson = isGeoJson;
exports.isFeature = isFeature;
exports.isFeatureCollection = isFeatureCollection;
exports.isRowObject = isRowObject;
exports.isKeplerGlMap = isKeplerGlMap;
exports.makeProgressIterator = makeProgressIterator;
exports.readBatch = readBatch;
exports.readFileInBatches = readFileInBatches;
exports.processFileData = processFileData;
exports.filesToDataPayload = filesToDataPayload;
var _regenerator = _interopRequireDefault(require("@babel/runtime/regenerator"));
var _toConsumableArray2 = _interopRequireDefault(require("@babel/runtime/helpers/toConsumableArray"));
var _asyncToGenerator2 = _interopRequireDefault(require("@babel/runtime/helpers/asyncToGenerator"));
var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));
var _awaitAsyncGenerator2 = _interopRequireDefault(require("@babel/runtime/helpers/awaitAsyncGenerator"));
var _wrapAsyncGenerator2 = _interopRequireDefault(require("@babel/runtime/helpers/wrapAsyncGenerator"));
var _asyncIterator2 = _interopRequireDefault(require("@babel/runtime/helpers/asyncIterator"));
require("@loaders.gl/polyfills");
var _core = require("@loaders.gl/core");
var _json = require("@loaders.gl/json");
var _csv = require("@loaders.gl/csv");
var _dataProcessor = require("./data-processor");
var _utils = require("../utils/utils");
var _defaultSettings = require("../constants/default-settings");
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { (0, _defineProperty2["default"])(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
var BATCH_TYPE = {
METADATA: 'metadata',
PARTIAL_RESULT: 'partial-result',
FINAL_RESULT: 'final-result'
};
var CSV_LOADER_OPTIONS = {
batchSize: 4000,
// Auto de tect number of rows per batch (network batch size)
rowFormat: 'object',
dynamicTyping: false // not working for now
};
var JSON_LOADER_OPTIONS = {
// instruct loaders.gl on what json paths to stream
jsonpaths: ['$', // JSON Row array
'$.features', // GeoJSON
'$.datasets' // KeplerGL JSON
]
};
function isGeoJson(json) {
// json can be feature collection
// or single feature
return (0, _utils.isPlainObject)(json) && (isFeature(json) || isFeatureCollection(json));
}
function isFeature(json) {
return json.type === 'Feature' && json.geometry;
}
function isFeatureCollection(json) {
return json.type === 'FeatureCollection' && json.features;
}
function isRowObject(json) {
return Array.isArray(json) && (0, _utils.isPlainObject)(json[0]);
}
function isKeplerGlMap(json) {
return Boolean((0, _utils.isPlainObject)(json) && json.datasets && json.config && json.info && json.info.app === 'kepler.gl');
}
function makeProgressIterator(_x, _x2) {
return _makeProgressIterator.apply(this, arguments);
} // eslint-disable-next-line complexity
function _makeProgressIterator() {
_makeProgressIterator = (0, _wrapAsyncGenerator2["default"])( /*#__PURE__*/_regenerator["default"].mark(function _callee(asyncIterator, info) {
var rowCount, _iteratorNormalCompletion, _didIteratorError, _iteratorError, _iterator, _step, _value, batch, rowCountInBatch, percent, progress;
return _regenerator["default"].wrap(function _callee$(_context) {
while (1) {
switch (_context.prev = _context.next) {
case 0:
rowCount = 0;
_iteratorNormalCompletion = true;
_didIteratorError = false;
_context.prev = 3;
_iterator = (0, _asyncIterator2["default"])(asyncIterator);
case 5:
_context.next = 7;
return (0, _awaitAsyncGenerator2["default"])(_iterator.next());
case 7:
_step = _context.sent;
_iteratorNormalCompletion = _step.done;
_context.next = 11;
return (0, _awaitAsyncGenerator2["default"])(_step.value);
case 11:
_value = _context.sent;
if (_iteratorNormalCompletion) {
_context.next = 23;
break;
}
batch = _value;
rowCountInBatch = batch.data && batch.data.length || 0;
rowCount += rowCountInBatch;
percent = Number.isFinite(batch.bytesUsed) ? batch.bytesUsed / info.size : null; // Update progress object
progress = _objectSpread({
rowCount: rowCount,
rowCountInBatch: rowCountInBatch
}, Number.isFinite(percent) ? {
percent: percent
} : {});
_context.next = 20;
return _objectSpread(_objectSpread({}, batch), {}, {
progress: progress
});
case 20:
_iteratorNormalCompletion = true;
_context.next = 5;
break;
case 23:
_context.next = 29;
break;
case 25:
_context.prev = 25;
_context.t0 = _context["catch"](3);
_didIteratorError = true;
_iteratorError = _context.t0;
case 29:
_context.prev = 29;
_context.prev = 30;
if (!(!_iteratorNormalCompletion && _iterator["return"] != null)) {
_context.next = 34;
break;
}
_context.next = 34;
return (0, _awaitAsyncGenerator2["default"])(_iterator["return"]());
case 34:
_context.prev = 34;
if (!_didIteratorError) {
_context.next = 37;
break;
}
throw _iteratorError;
case 37:
return _context.finish(34);
case 38:
return _context.finish(29);
case 39:
case "end":
return _context.stop();
}
}
}, _callee, null, [[3, 25, 29, 39], [30,, 34, 38]]);
}));
return _makeProgressIterator.apply(this, arguments);
}
function readBatch(_x3, _x4) {
return _readBatch.apply(this, arguments);
}
function _readBatch() {
_readBatch = (0, _wrapAsyncGenerator2["default"])( /*#__PURE__*/_regenerator["default"].mark(function _callee2(asyncIterator, fileName) {
var result, batches, _iteratorNormalCompletion2, _didIteratorError2, _iteratorError2, _iterator2, _step2, _value2, batch, streamingPath, i;
return _regenerator["default"].wrap(function _callee2$(_context2) {
while (1) {
switch (_context2.prev = _context2.next) {
case 0:
result = null;
batches = [];
_iteratorNormalCompletion2 = true;
_didIteratorError2 = false;
_context2.prev = 4;
_iterator2 = (0, _asyncIterator2["default"])(asyncIterator);
case 6:
_context2.next = 8;
return (0, _awaitAsyncGenerator2["default"])(_iterator2.next());
case 8:
_step2 = _context2.sent;
_iteratorNormalCompletion2 = _step2.done;
_context2.next = 12;
return (0, _awaitAsyncGenerator2["default"])(_step2.value);
case 12:
_value2 = _context2.sent;
if (_iteratorNormalCompletion2) {
_context2.next = 21;
break;
}
batch = _value2;
// Last batch will have this special type and will provide all the root
// properties of the parsed document.
// Only json parse will have `FINAL_RESULT`
if (batch.batchType === BATCH_TYPE.FINAL_RESULT) {
if (batch.container) {
result = _objectSpread({}, batch.container);
} // Set the streamed data correctly is Batch json path is set
// and the path streamed is not the top level object (jsonpath = '$')
if (batch.jsonpath && batch.jsonpath.length > 1) {
streamingPath = new _json._JSONPath(batch.jsonpath);
streamingPath.setFieldAtPath(result, batches);
} else if (batch.jsonpath && batch.jsonpath.length === 1) {
// The streamed object is a ROW JSON-batch (jsonpath = '$')
// row objects
result = batches;
}
} else {
for (i = 0; i < batch.data.length; i++) {
batches.push(batch.data[i]);
}
}
_context2.next = 18;
return _objectSpread(_objectSpread(_objectSpread({}, batch), batch.schema ? {
headers: Object.keys(batch.schema)
} : {}), {}, {
fileName: fileName,
// if dataset is CSV, data is set to the raw batches
data: result ? result : batches
});
case 18:
_iteratorNormalCompletion2 = true;
_context2.next = 6;
break;
case 21:
_context2.next = 27;
break;
case 23:
_context2.prev = 23;
_context2.t0 = _context2["catch"](4);
_didIteratorError2 = true;
_iteratorError2 = _context2.t0;
case 27:
_context2.prev = 27;
_context2.prev = 28;
if (!(!_iteratorNormalCompletion2 && _iterator2["return"] != null)) {
_context2.next = 32;
break;
}
_context2.next = 32;
return (0, _awaitAsyncGenerator2["default"])(_iterator2["return"]());
case 32:
_context2.prev = 32;
if (!_didIteratorError2) {
_context2.next = 35;
break;
}
throw _iteratorError2;
case 35:
return _context2.finish(32);
case 36:
return _context2.finish(27);
case 37:
case "end":
return _context2.stop();
}
}
}, _callee2, null, [[4, 23, 27, 37], [28,, 32, 36]]);
}));
return _readBatch.apply(this, arguments);
}
function readFileInBatches(_x5) {
return _readFileInBatches.apply(this, arguments);
}
function _readFileInBatches() {
_readFileInBatches = (0, _asyncToGenerator2["default"])( /*#__PURE__*/_regenerator["default"].mark(function _callee3(_ref) {
var file, _ref$fileCache, fileCache, _ref$loaders, loaders, _ref$loadOptions, loadOptions, batchIterator, progressIterator;
return _regenerator["default"].wrap(function _callee3$(_context3) {
while (1) {
switch (_context3.prev = _context3.next) {
case 0:
file = _ref.file, _ref$fileCache = _ref.fileCache, fileCache = _ref$fileCache === void 0 ? [] : _ref$fileCache, _ref$loaders = _ref.loaders, loaders = _ref$loaders === void 0 ? [] : _ref$loaders, _ref$loadOptions = _ref.loadOptions, loadOptions = _ref$loadOptions === void 0 ? {} : _ref$loadOptions;
loaders = [_json.JSONLoader, _csv.CSVLoader].concat((0, _toConsumableArray2["default"])(loaders));
loadOptions = _objectSpread({
csv: CSV_LOADER_OPTIONS,
json: JSON_LOADER_OPTIONS,
metadata: true
}, loadOptions);
_context3.next = 5;
return (0, _core.parseInBatches)(file, loaders, loadOptions);
case 5:
batchIterator = _context3.sent;
progressIterator = makeProgressIterator(batchIterator, {
size: file.size
});
return _context3.abrupt("return", readBatch(progressIterator, file.name));
case 8:
case "end":
return _context3.stop();
}
}
}, _callee3);
}));
return _readFileInBatches.apply(this, arguments);
}
function processFileData(_ref2) {
var content = _ref2.content,
fileCache = _ref2.fileCache;
return new Promise(function (resolve, reject) {
var data = content.data;
var format;
var processor;
if (isKeplerGlMap(data)) {
format = _defaultSettings.DATASET_FORMATS.keplergl;
processor = _dataProcessor.processKeplerglJSON;
} else if (isRowObject(data)) {
format = _defaultSettings.DATASET_FORMATS.row;
processor = _dataProcessor.processRowObject;
} else if (isGeoJson(data)) {
format = _defaultSettings.DATASET_FORMATS.geojson;
processor = _dataProcessor.processGeojson;
}
if (format && processor) {
var result = processor(data);
resolve([].concat((0, _toConsumableArray2["default"])(fileCache), [{
data: result,
info: {
label: content.fileName,
format: format
}
}]));
}
reject('Unknow File Format');
});
}
function filesToDataPayload(fileCache) {
// seperate out files which could be a single datasets. or a keplergl map json
var collection = fileCache.reduce(function (accu, file) {
var data = file.data,
_file$info = file.info,
info = _file$info === void 0 ? {} : _file$info;
var format = info.format;
if (format === _defaultSettings.DATASET_FORMATS.keplergl) {
// if file contains a single kepler map dataset & config
accu.keplerMaps.push(_objectSpread(_objectSpread({}, data), {}, {
options: {
centerMap: !(data.config && data.config.mapState)
}
}));
} else if (_defaultSettings.DATASET_FORMATS[format]) {
// if file contains only data
var newDataset = {
data: data,
info: _objectSpread({
id: info.id || (0, _utils.generateHashId)(4)
}, info)
};
accu.datasets.push(newDataset);
}
return accu;
}, {
datasets: [],
keplerMaps: []
}); // add kepler map first with config
// add datasets later in one add data call
return collection.keplerMaps.concat({
datasets: collection.datasets
});
}
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Copyright (c) 2021 Uber Technologies, Inc.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a copy\n// of this software and associated documentation files (the \"Software\"), to deal\n// in the Software without restriction, including without limitation the rights\n// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n// copies of the Software, and to permit persons to whom the Software is\n// furnished to do so, subject to the following conditions:\n//\n// The above copyright notice and this permission notice shall be included in\n// all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n// THE SOFTWARE.\n\nimport '@loaders.gl/polyfills';\nimport {parseInBatches} from '@loaders.gl/core';\nimport {JSONLoader, _JSONPath} from '@loaders.gl/json';\nimport {CSVLoader} from '@loaders.gl/csv';\nimport {processGeojson, processKeplerglJSON, processRowObject} from './data-processor';\nimport {isPlainObject, generateHashId} from 'utils/utils';\nimport {DATASET_FORMATS} from 'constants/default-settings';\n\nconst BATCH_TYPE = {\n  METADATA: 'metadata',\n  PARTIAL_RESULT: 'partial-result',\n  FINAL_RESULT: 'final-result'\n};\n\nconst CSV_LOADER_OPTIONS = {\n  batchSize: 4000, // Auto de tect number of rows per batch (network batch size)\n  rowFormat: 'object',\n  dynamicTyping: false // not working for now\n};\n\nconst JSON_LOADER_OPTIONS = {\n  // instruct loaders.gl on what json paths to stream\n  jsonpaths: [\n    '$', // JSON Row array\n    '$.features', // GeoJSON\n    '$.datasets' // KeplerGL JSON\n  ]\n};\n\nexport function isGeoJson(json) {\n  // json can be feature collection\n  // or single feature\n  return isPlainObject(json) && (isFeature(json) || isFeatureCollection(json));\n}\n\nexport function isFeature(json) {\n  return json.type === 'Feature' && json.geometry;\n}\n\nexport function isFeatureCollection(json) {\n  return json.type === 'FeatureCollection' && json.features;\n}\n\nexport function isRowObject(json) {\n  return Array.isArray(json) && isPlainObject(json[0]);\n}\n\nexport function isKeplerGlMap(json) {\n  return Boolean(\n    isPlainObject(json) &&\n      json.datasets &&\n      json.config &&\n      json.info &&\n      json.info.app === 'kepler.gl'\n  );\n}\n\nexport async function* makeProgressIterator(asyncIterator, info) {\n  let rowCount = 0;\n\n  for await (const batch of asyncIterator) {\n    const rowCountInBatch = (batch.data && batch.data.length) || 0;\n    rowCount += rowCountInBatch;\n    const percent = Number.isFinite(batch.bytesUsed) ? batch.bytesUsed / info.size : null;\n\n    // Update progress object\n    const progress = {\n      rowCount,\n      rowCountInBatch,\n      // @ts-ignore\n      ...(Number.isFinite(percent) ? {percent} : {})\n    };\n\n    yield {...batch, progress};\n  }\n}\n\n// eslint-disable-next-line complexity\nexport async function* readBatch(asyncIterator, fileName) {\n  let result = null;\n  const batches = [];\n\n  for await (const batch of asyncIterator) {\n    // Last batch will have this special type and will provide all the root\n    // properties of the parsed document.\n    // Only json parse will have `FINAL_RESULT`\n    if (batch.batchType === BATCH_TYPE.FINAL_RESULT) {\n      if (batch.container) {\n        result = {...batch.container};\n      }\n      // Set the streamed data correctly is Batch json path is set\n      // and the path streamed is not the top level object (jsonpath = '$')\n      if (batch.jsonpath && batch.jsonpath.length > 1) {\n        const streamingPath = new _JSONPath(batch.jsonpath);\n        streamingPath.setFieldAtPath(result, batches);\n      } else if (batch.jsonpath && batch.jsonpath.length === 1) {\n        // The streamed object is a ROW JSON-batch (jsonpath = '$')\n        // row objects\n        result = batches;\n      }\n    } else {\n      for (let i = 0; i < batch.data.length; i++) {\n        batches.push(batch.data[i]);\n      }\n    }\n\n    yield {\n      ...batch,\n      ...(batch.schema ? {headers: Object.keys(batch.schema)} : {}),\n      fileName,\n      // if dataset is CSV, data is set to the raw batches\n      data: result ? result : batches\n    };\n  }\n}\n\nexport async function readFileInBatches({file, fileCache = [], loaders = [], loadOptions = {}}) {\n  loaders = [JSONLoader, CSVLoader, ...loaders];\n  loadOptions = {\n    csv: CSV_LOADER_OPTIONS,\n    json: JSON_LOADER_OPTIONS,\n    metadata: true,\n    ...loadOptions\n  };\n\n  const batchIterator = await parseInBatches(file, loaders, loadOptions);\n  const progressIterator = makeProgressIterator(batchIterator, {size: file.size});\n\n  return readBatch(progressIterator, file.name);\n}\n\nexport function processFileData({content, fileCache}) {\n  return new Promise((resolve, reject) => {\n    const {data} = content;\n\n    let format;\n    let processor;\n    if (isKeplerGlMap(data)) {\n      format = DATASET_FORMATS.keplergl;\n      processor = processKeplerglJSON;\n    } else if (isRowObject(data)) {\n      format = DATASET_FORMATS.row;\n      processor = processRowObject;\n    } else if (isGeoJson(data)) {\n      format = DATASET_FORMATS.geojson;\n      processor = processGeojson;\n    }\n\n    if (format && processor) {\n      const result = processor(data);\n\n      resolve([\n        ...fileCache,\n        {\n          data: result,\n          info: {\n            label: content.fileName,\n            format\n          }\n        }\n      ]);\n    }\n\n    reject('Unknow File Format');\n  });\n}\n\nexport function filesToDataPayload(fileCache) {\n  // seperate out files which could be a single datasets. or a keplergl map json\n  const collection = fileCache.reduce(\n    (accu, file) => {\n      const {data, info = {}} = file;\n      const {format} = info;\n      if (format === DATASET_FORMATS.keplergl) {\n        // if file contains a single kepler map dataset & config\n        accu.keplerMaps.push({\n          ...data,\n          options: {\n            centerMap: !(data.config && data.config.mapState)\n          }\n        });\n      } else if (DATASET_FORMATS[format]) {\n        // if file contains only data\n        const newDataset = {\n          data,\n          info: {\n            id: info.id || generateHashId(4),\n            ...info\n          }\n        };\n        accu.datasets.push(newDataset);\n      }\n      return accu;\n    },\n    {datasets: [], keplerMaps: []}\n  );\n\n  // add kepler map first with config\n  // add datasets later in one add data call\n  return collection.keplerMaps.concat({datasets: collection.datasets});\n}\n"]}