Ohm-Management - Projektarbeit B-ME
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retry.d.ts 1.7KB

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  1. import { MonoTypeOperatorFunction } from '../types';
  2. /**
  3. * Returns an Observable that mirrors the source Observable with the exception of an `error`. If the source Observable
  4. * calls `error`, this method will resubscribe to the source Observable for a maximum of `count` resubscriptions (given
  5. * as a number parameter) rather than propagating the `error` call.
  6. *
  7. * ![](retry.png)
  8. *
  9. * Any and all items emitted by the source Observable will be emitted by the resulting Observable, even those emitted
  10. * during failed subscriptions. For example, if an Observable fails at first but emits [1, 2] then succeeds the second
  11. * time and emits: [1, 2, 3, 4, 5] then the complete stream of emissions and notifications
  12. * would be: [1, 2, 1, 2, 3, 4, 5, `complete`].
  13. *
  14. * ## Example
  15. * ```ts
  16. * import { interval, of, throwError } from 'rxjs';
  17. * import { mergeMap, retry } from 'rxjs/operators';
  18. *
  19. * const source = interval(1000);
  20. * const example = source.pipe(
  21. * mergeMap(val => {
  22. * if(val > 5){
  23. * return throwError('Error!');
  24. * }
  25. * return of(val);
  26. * }),
  27. * //retry 2 times on error
  28. * retry(2)
  29. * );
  30. *
  31. * const subscribe = example.subscribe({
  32. * next: val => console.log(val),
  33. * error: val => console.log(`${val}: Retried 2 times then quit!`)
  34. * });
  35. *
  36. * // Output:
  37. * // 0..1..2..3..4..5..
  38. * // 0..1..2..3..4..5..
  39. * // 0..1..2..3..4..5..
  40. * // "Error!: Retried 2 times then quit!"
  41. * ```
  42. *
  43. * @param {number} count - Number of retry attempts before failing.
  44. * @return {Observable} The source Observable modified with the retry logic.
  45. * @method retry
  46. * @owner Observable
  47. */
  48. export declare function retry<T>(count?: number): MonoTypeOperatorFunction<T>;