Press n or j to go to the next uncovered block, b, p or k for the previous block.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 | 6x 6x 6x 6x 6x 15x 3x 6x 18x 18x 19x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 18x 8x 6x 59x 2x 57x 43x 22x 22x 15x 15x 14x 14x 14x 14x 14x 15x 15x 15x 15x 1x 6x 15x 15x 15x 15x 15x 14x 14x 9x 2x 2x 7x 3x 3x 4x 3x 14x 1x 1x 1x 6x 21x 6x 9x 6x 1x 6x 1x 6x 3x 6x 1x 6x 6x 14x 14x 9x 6x 18x 7x 7x 2x 2x 1x 5x 6x 14x 8x 14x 14x 14x 14x 12x 12x 12x 2x 2x 14x 6x 21x 13x 3x 3x 5x 8x 6x 18x 18x 18x 6x 15x 3x 3x 6x 39x 16x 16x 6x 16x 2x 2x 6x 38x 3x 3x 11x 11x 2x 1x 1x 6x 49x 16x 1x 15x 1x 14x 1x 6x 45x 45x 6x 9x 2x 7x 1x 6x 4x 2x 6x 44x 6x 51x 24x 24x 24x 24x 24x 26x 26x 1x 1x 6x 14x 6x 3x 1x 2x 1x 1x 1x 2x 2x 2x 1x 7x 7x 6x 7x 6x 5x 3x 3x 2x 1x 18x 18x 18x 18x 18x 17x 17x 7x 7x 7x 7x 7x 6x 6x 1x 1x 1x 17x 10x 17x 8x 17x 13x 6x 28x 28x 27x 1x 27x 5x 5x 22x 3x 2x 3x 9x 9x 9x 9x 9x 2x 9x 2x 2x 2x 1x 1x 1x 1x 4x 4x 4x 2x 2x 2x 1x 2x 1x 1x 2x 2x 1x 6x 17x 11x 11x 11x 6x 6x 18x | //@ts-ignore import Backoff from "backo"; import mitt, { Emitter } from "mitt"; const { on, off, emit } = mitt(); import $$observable from "symbol-observable"; import { WSOptions } from ".."; const WS_TIMEOUT = 30000; function isString(value: any) { return typeof value === "string"; } function isObject(value: null) { return value !== null && typeof value === "object"; } export class SubscriptionClient { wsImpl: { new(url: string, protocols?: string | string[]): WebSocket; prototype: WebSocket; readonly CLOSED: number; readonly CLOSING: number; readonly CONNECTING: number; readonly OPEN: number; }; connectionCallback: any; url: any; operations: any = {}; nextOperationId: number; wsTimeout: any; unsentMessagesQueue: any[]; reconnect: any; reconnecting: boolean; reconnectionAttempts: any; lazy: boolean; inactivityTimeout: any; closedByUser: boolean; backoff: any; eventEmitter = emit; client: any; maxConnectTimeGenerator: any; connectionParams: () => Promise<unknown>; checkConnectionIntervalId: any; maxConnectTimeoutId: any; tryReconnectTimeoutId: any; inactivityTimeoutId: any; wasKeepAliveReceived: any; constructor(url: any, options: any = {}) { const { connectionCallback = undefined, connectionParams = {}, timeout = WS_TIMEOUT, reconnect = false, reconnectionAttempts = Infinity, lazy = false, inactivityTimeout = 0, } = options || {}; this.wsImpl = WebSocket; this.connectionCallback = connectionCallback; this.url = url; this.operations = {}; this.nextOperationId = 0; this.wsTimeout = timeout; this.unsentMessagesQueue = []; this.reconnect = reconnect; this.reconnecting = false; this.reconnectionAttempts = reconnectionAttempts; this.lazy = !!lazy; this.inactivityTimeout = inactivityTimeout; this.closedByUser = false; this.backoff = new Backoff({ jitter: 0.5 }); this.client = null; this.maxConnectTimeGenerator = this.createMaxConnectTimeGenerator(); this.connectionParams = this.getConnectionParams(connectionParams); if (!this.lazy) { this.connect(); } } get status() { if (this.client === null) { return this.wsImpl.CLOSED; } return this.client.readyState; } close(isForced = true, closedByUser = true) { this.clearInactivityTimeout(); if (this.client !== null) { this.closedByUser = closedByUser; if (isForced) { this.clearCheckConnectionInterval(); this.clearMaxConnectTimeout(); this.clearTryReconnectTimeout(); this.unsubscribeAll(); this.sendMessage(undefined, "connection_terminate", null); } this.client.close(); this.client = null; this.eventEmitter("disconnected"); if (!isForced) { this.tryReconnect(); } } } request(request: { query: any; variables?: object; }) { const getObserver = this.getObserver.bind(this); const executeOperation = this.executeOperation.bind(this); const unsubscribe = this.unsubscribe.bind(this); let opId: string | null; this.clearInactivityTimeout(); return { //@ts-ignore [$$observable["default"] ? $$observable["default"] : $$observable]() { return this; }, subscribe(observerOrNext?: any, onError?: any, onComplete?: any) { const observer = getObserver(observerOrNext, onError, onComplete); //@ts-ignore opId = executeOperation(request, (error, result) => { if (error === null && result === null) { Eif (observer.complete) { observer.complete(); } } else if (error) { Eif (observer.error) { observer.error(error[0]); } } else { if (observer.next) { observer.next(result); } } }); return { unsubscribe: () => { Eif (opId) { unsubscribe(opId); opId = null; } }, }; }, }; } on(eventName: string, callback: any, context?:any) { on(eventName, callback) } onConnected(callback: any, context?:any) { return this.on('connected', callback, context) } onConnecting(callback: any, context?:any) { return this.on('connecting', callback, context) } onDisconnected(callback: any, context?:any) { return this.on('disconnected', callback, context) } onReconnected(callback: any, context?:any) { return this.on('reconnected', callback, context) } onReconnecting(callback: any, context?:any) { return this.on('reconnecting', callback, context) } onError(callback: any, context?:any) { return this.on('error', callback, context) } unsubscribeAll() { Object.keys(this.operations).forEach((subId) => { this.unsubscribe(subId); }); } getConnectionParams(connectionParams: unknown) { return () => new Promise((resolve, reject) => { if (typeof connectionParams === "function") { try { return resolve(connectionParams(null)); } catch (error) { return reject(error); } } resolve(connectionParams); }); } executeOperation(options: any, handler: (arg0: any) => void) { if (this.client === null) { this.connect(); } const opId = this.generateOperationId(); this.operations[opId] = { options: options, handler }; try { this.checkOperationOptions(options, handler); Eif (this.operations[opId]) { this.operations[opId] = { options, handler }; this.sendMessage(opId, "start", options); } } catch (error) { this.unsubscribe(opId); handler(this.formatErrors(error)); } return opId; } getObserver(observerOrNext: any, error?: (arg0: any) => any, complete?: () => any) { if (typeof observerOrNext === "function") { return { next: (v: any) => observerOrNext(v), error: (e: any) => error && error(e), complete: () => complete && complete(), }; } return observerOrNext; } createMaxConnectTimeGenerator() { const minValue = 1000; const maxValue = this.wsTimeout; return new Backoff({ min: minValue, max: maxValue, factor: 1.2, }); } clearCheckConnectionInterval() { if (this.checkConnectionIntervalId) { clearInterval(this.checkConnectionIntervalId); this.checkConnectionIntervalId = null; } } clearMaxConnectTimeout() { if (this.maxConnectTimeoutId) { clearTimeout(this.maxConnectTimeoutId); this.maxConnectTimeoutId = null; } } clearTryReconnectTimeout() { if (this.tryReconnectTimeoutId) { clearTimeout(this.tryReconnectTimeoutId); this.tryReconnectTimeoutId = null; } } clearInactivityTimeout() { if (this.inactivityTimeoutId) { clearTimeout(this.inactivityTimeoutId); this.inactivityTimeoutId = null; } } setInactivityTimeout() { if ( this.inactivityTimeout > 0 && Object.keys(this.operations).length === 0 ) { this.inactivityTimeoutId = setTimeout(() => { Eif (Object.keys(this.operations).length === 0) { this.close(); } }, this.inactivityTimeout); } } checkOperationOptions(options: { query: any; variables: any; operationName: any; }, handler: any) { const { query, variables, operationName } = options; if (!query) { throw new Error("Must provide a query."); } if (!handler) { throw new Error("Must provide an handler."); } if ( !isString(query) || (operationName && !isString(operationName)) || (variables && !isObject(variables)) ) { throw new Error( "Incorrect option types. query must be a string," + "`operationName` must be a string, and `variables` must be an object." ); } } buildMessage(id: any, type: string, payload: { query: string; variables: Object }) { const payloadToReturn = payload && payload.query ? Object.assign({}, payload, { query: payload.query, }) : payload; return { id, type, payload: payloadToReturn, }; } formatErrors(errors: any): any { if (Array.isArray(errors)) { return errors; } if (errors && errors.errors) { return this.formatErrors(errors.errors); } if (errors && errors.message) { return [errors]; } return [ { name: "FormatedError", message: "Unknown error", originalError: errors, }, ]; } sendMessage(id: string | undefined, type: string, payload: any) { this.sendMessageRaw(this.buildMessage(id, type, payload)); } // send message, or queue it if connection is not open sendMessageRaw(message: { id: any; type: any; payload: any; }) { switch (this.status) { case this.wsImpl.OPEN: const serializedMessage = JSON.stringify(message); try { JSON.parse(serializedMessage); } catch (error) { this.eventEmitter( "error", new Error(`Message must be JSON-serializable. Got: ${message}`) ); } this.client.send(serializedMessage); break; case this.wsImpl.CONNECTING: this.unsentMessagesQueue.push(message); break; default: Eif (!this.reconnecting) { this.eventEmitter( "error", new Error( "A message was not sent because socket is not connected, is closing or " + "is already closed. Message was: " + JSON.stringify(message) ) ); } } } generateOperationId() { return String(++this.nextOperationId); } tryReconnect() { if (!this.reconnect || this.backoff.attempts >= this.reconnectionAttempts) { return; } if (!this.reconnecting) { Object.keys(this.operations).forEach((key) => { this.unsentMessagesQueue.push( this.buildMessage(key, "start", this.operations[key].options) ); }); this.reconnecting = true; } this.clearTryReconnectTimeout(); const delay = this.backoff.duration(); this.tryReconnectTimeoutId = setTimeout(() => { this.connect(); }, delay); } flushUnsentMessagesQueue() { this.unsentMessagesQueue.forEach((message) => { this.sendMessageRaw(message); }); this.unsentMessagesQueue = []; } checkConnection() { if (this.wasKeepAliveReceived) { this.wasKeepAliveReceived = false; return; } if (!this.reconnecting) { this.close(false, true); } } checkMaxConnectTimeout() { this.clearMaxConnectTimeout(); // Max timeout trying to connect this.maxConnectTimeoutId = setTimeout(() => { if (this.status !== this.wsImpl.OPEN) { this.reconnecting = true; this.close(false, true); } }, this.maxConnectTimeGenerator.duration()); } connect() { this.client = new WebSocket(this.url, "graphql-ws"); this.checkMaxConnectTimeout(); this.client.addEventListener("open", async () => { if (Ithis.status === this.wsImpl.OPEN) { this.clearMaxConnectTimeout(); this.closedByUser = false; this.eventEmitter( this.reconnecting ? "reconnecting" : "connecting" ); try { const connectionParams = await this.connectionParams(); // Send connection_init message, no need to wait for connection to success (reduce roundtrips) this.sendMessage(undefined, "connection_init", connectionParams); this.flushUnsentMessagesQueue(); } catch (error) { this.sendMessage(undefined, "connection_error", error); this.eventEmitter('error', error) this.flushUnsentMessagesQueue(); } } }); this.client.onclose = () => { Iif (!this.closedByUser) { this.close(false, false); } }; this.client.addEventListener("error", (error: any) => { // Capture and ignore errors to prevent unhandled exceptions, wait for // onclose to fire before attempting a reconnect. this.eventEmitter("connection_error", error); }); this.client.addEventListener("message", ({ data }: any) => { this.processReceivedData(data); }); } processReceivedData(receivedData: string) { let parsedMessage; let opId; try { parsedMessage = JSON.parse(receivedData); opId = parsedMessage.id; } catch (error) { throw new Error(`Message must be JSON-parseable. Got: ${receivedData}`); } if ( ["data", "complete", "error"].includes(parsedMessage.type) && !this.operations[opId] ) { this.unsubscribe(opId); return; } switch (parsedMessage.type) { case "connection_error": if (this.connectionCallback) { this.connectionCallback(parsedMessage.payload); } break; case "connection_ack": this.eventEmitter(this.reconnecting ? "reconnected" : "connected"); this.reconnecting = false; this.backoff.reset(); this.maxConnectTimeGenerator.reset(); if (this.connectionCallback) { this.connectionCallback(); } break; case "complete": this.operations[opId].handler(null, null); delete this.operations[opId]; break; case "error": this.eventEmitter("error", this.formatErrors(parsedMessage.payload)) this.operations[opId].handler( this.formatErrors(parsedMessage.payload), null ); delete this.operations[opId]; break; case "data": const parsedPayload = !parsedMessage.payload.errors ? parsedMessage.payload : { ...parsedMessage.payload, errors: this.formatErrors(parsedMessage.payload.errors), }; this.operations[opId].handler(null, parsedPayload); break; case "ka": const firstKA = typeof this.wasKeepAliveReceived === "undefined"; this.wasKeepAliveReceived = true; if (firstKA) { this.checkConnection(); } if (this.checkConnectionIntervalId) { clearInterval(this.checkConnectionIntervalId); this.checkConnection(); } this.checkConnectionIntervalId = setInterval( this.checkConnection.bind(this), this.wsTimeout ); break; default: throw new Error("Invalid message type!"); } } unsubscribe(opId: string) { if (this.operations[opId]) { delete this.operations[opId]; this.setInactivityTimeout(); this.sendMessage(opId, "stop", undefined); } } } export function SubscribeQL(url: any, options: WSOptions) { return new SubscriptionClient(url, options); } |