request.js 11 KB

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  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", {
  3. value: true
  4. });
  5. exports.request = request;
  6. exports.requestWithRetry = requestWithRetry;
  7. var _stream = require("stream");
  8. var _util = require("util");
  9. const pipelineAsync = (0, _util.promisify)(_stream.pipeline);
  10. async function request(transport, opt, body = null) {
  11. return new Promise((resolve, reject) => {
  12. const requestObj = transport.request(opt, response => {
  13. resolve(response);
  14. });
  15. requestObj.on('error', reject);
  16. if (!body || Buffer.isBuffer(body) || typeof body === 'string') {
  17. requestObj.end(body);
  18. } else {
  19. pipelineAsync(body, requestObj).catch(reject);
  20. }
  21. });
  22. }
  23. const MAX_RETRIES = 1;
  24. const BASE_DELAY_MS = 100; // Base delay for exponential backoff
  25. const MAX_DELAY_MS = 60000; // Max delay for exponential backoff
  26. // Retryable error codes for HTTP ( ref: minio-go)
  27. const retryHttpCodes = {
  28. 408: true,
  29. 429: true,
  30. 499: true,
  31. 500: true,
  32. 502: true,
  33. 503: true,
  34. 504: true,
  35. 520: true
  36. };
  37. exports.retryHttpCodes = retryHttpCodes;
  38. const isHttpRetryable = httpResCode => {
  39. return retryHttpCodes[httpResCode] !== undefined;
  40. };
  41. const sleep = ms => {
  42. return new Promise(resolve => setTimeout(resolve, ms));
  43. };
  44. const getExpBackOffDelay = (retryCount, baseDelayMs, maximumDelayMs) => {
  45. const backOffBy = baseDelayMs * (1 << retryCount);
  46. const additionalDelay = Math.random() * backOffBy;
  47. return Math.min(backOffBy + additionalDelay, maximumDelayMs);
  48. };
  49. async function requestWithRetry(transport, opt, body = null, maxRetries = MAX_RETRIES, baseDelayMs = BASE_DELAY_MS, maximumDelayMs = MAX_DELAY_MS) {
  50. let attempt = 0;
  51. let isRetryable = false;
  52. while (attempt <= maxRetries) {
  53. try {
  54. const response = await request(transport, opt, body);
  55. // Check if the HTTP status code is retryable
  56. if (isHttpRetryable(response.statusCode)) {
  57. isRetryable = true;
  58. throw new Error(`Retryable HTTP status: ${response.statusCode}`); // trigger retry attempt with calculated delay
  59. }
  60. return response; // Success, return the raw response
  61. } catch (err) {
  62. if (isRetryable) {
  63. attempt++;
  64. isRetryable = false;
  65. if (attempt > maxRetries) {
  66. throw new Error(`Request failed after ${maxRetries} retries: ${err}`);
  67. }
  68. const delay = getExpBackOffDelay(attempt, baseDelayMs, maximumDelayMs);
  69. // eslint-disable-next-line no-console
  70. console.warn(`${new Date().toLocaleString()} Retrying request (attempt ${attempt}/${maxRetries}) after ${delay}ms due to: ${err}`);
  71. await sleep(delay);
  72. } else {
  73. throw err; // re-throw if any request, syntax errors
  74. }
  75. }
  76. }
  77. throw new Error(`${MAX_RETRIES} Retries exhausted, request failed.`);
  78. }
  79. //# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"names":["_stream","require","_util","pipelineAsync","promisify","pipeline","request","transport","opt","body","Promise","resolve","reject","requestObj","response","on","Buffer","isBuffer","end","catch","MAX_RETRIES","BASE_DELAY_MS","MAX_DELAY_MS","retryHttpCodes","exports","isHttpRetryable","httpResCode","undefined","sleep","ms","setTimeout","getExpBackOffDelay","retryCount","baseDelayMs","maximumDelayMs","backOffBy","additionalDelay","Math","random","min","requestWithRetry","maxRetries","attempt","isRetryable","statusCode","Error","err","delay","console","warn","Date","toLocaleString"],"sources":["request.ts"],"sourcesContent":["import type * as http from 'node:http'\nimport type * as https from 'node:https'\nimport type * as stream from 'node:stream'\nimport { pipeline } from 'node:stream'\nimport { promisify } from 'node:util'\n\nimport type { Transport } from './type.ts'\n\nconst pipelineAsync = promisify(pipeline)\n\nexport async function request(\n  transport: Transport,\n  opt: https.RequestOptions,\n  body: Buffer | string | stream.Readable | null = null,\n): Promise<http.IncomingMessage> {\n  return new Promise<http.IncomingMessage>((resolve, reject) => {\n    const requestObj = transport.request(opt, (response) => {\n      resolve(response)\n    })\n\n    requestObj.on('error', reject)\n\n    if (!body || Buffer.isBuffer(body) || typeof body === 'string') {\n      requestObj.end(body)\n    } else {\n      pipelineAsync(body, requestObj).catch(reject)\n    }\n  })\n}\n\nconst MAX_RETRIES = 1\nconst BASE_DELAY_MS = 100 // Base delay for exponential backoff\nconst MAX_DELAY_MS = 60000 // Max delay for exponential backoff\n\n// Retryable error codes for HTTP ( ref: minio-go)\nexport const retryHttpCodes: Record<string, boolean> = {\n  408: true,\n  429: true,\n  499: true,\n  500: true,\n  502: true,\n  503: true,\n  504: true,\n  520: true,\n}\n\nconst isHttpRetryable = (httpResCode: number) => {\n  return retryHttpCodes[httpResCode] !== undefined\n}\n\nconst sleep = (ms: number) => {\n  return new Promise((resolve) => setTimeout(resolve, ms))\n}\n\nconst getExpBackOffDelay = (retryCount: number, baseDelayMs: number, maximumDelayMs: number) => {\n  const backOffBy = baseDelayMs * (1 << retryCount)\n  const additionalDelay = Math.random() * backOffBy\n  return Math.min(backOffBy + additionalDelay, maximumDelayMs)\n}\n\nexport async function requestWithRetry(\n  transport: Transport,\n  opt: https.RequestOptions,\n  body: Buffer | string | stream.Readable | null = null,\n  maxRetries: number = MAX_RETRIES,\n  baseDelayMs: number = BASE_DELAY_MS,\n  maximumDelayMs: number = MAX_DELAY_MS,\n): Promise<http.IncomingMessage> {\n  let attempt = 0\n  let isRetryable = false\n  while (attempt <= maxRetries) {\n    try {\n      const response = await request(transport, opt, body)\n      // Check if the HTTP status code is retryable\n      if (isHttpRetryable(response.statusCode as number)) {\n        isRetryable = true\n        throw new Error(`Retryable HTTP status: ${response.statusCode}`) // trigger retry attempt with calculated delay\n      }\n\n      return response // Success, return the raw response\n    } catch (err: unknown) {\n      if (isRetryable) {\n        attempt++\n        isRetryable = false\n\n        if (attempt > maxRetries) {\n          throw new Error(`Request failed after ${maxRetries} retries: ${err}`)\n        }\n        const delay = getExpBackOffDelay(attempt, baseDelayMs, maximumDelayMs)\n        // eslint-disable-next-line no-console\n        console.warn(\n          `${new Date().toLocaleString()} Retrying request (attempt ${attempt}/${maxRetries}) after ${delay}ms due to: ${err}`,\n        )\n        await sleep(delay)\n      } else {\n        throw err // re-throw if any request, syntax errors\n      }\n    }\n  }\n\n  throw new Error(`${MAX_RETRIES} Retries exhausted, request 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