| import { Subscriber } from '../Subscriber'; |
| /** |
| * Returns an Observable that mirrors the source Observable with the exception of an `error`. If the source Observable |
| * calls `error`, this method will resubscribe to the source Observable for a maximum of `count` resubscriptions (given |
| * as a number parameter) rather than propagating the `error` call. |
| * |
| * <img src="./img/retry.png" width="100%"> |
| * |
| * Any and all items emitted by the source Observable will be emitted by the resulting Observable, even those emitted |
| * during failed subscriptions. For example, if an Observable fails at first but emits [1, 2] then succeeds the second |
| * time and emits: [1, 2, 3, 4, 5] then the complete stream of emissions and notifications |
| * would be: [1, 2, 1, 2, 3, 4, 5, `complete`]. |
| * @param {number} count - Number of retry attempts before failing. |
| * @return {Observable} The source Observable modified with the retry logic. |
| * @method retry |
| * @owner Observable |
| */ |
| export function retry(count = -1) { |
| return (source) => source.lift(new RetryOperator(count, source)); |
| } |
| class RetryOperator { |
| constructor(count, source) { |
| this.count = count; |
| this.source = source; |
| } |
| call(subscriber, source) { |
| return source.subscribe(new RetrySubscriber(subscriber, this.count, this.source)); |
| } |
| } |
| /** |
| * We need this JSDoc comment for affecting ESDoc. |
| * @ignore |
| * @extends {Ignored} |
| */ |
| class RetrySubscriber extends Subscriber { |
| constructor(destination, count, source) { |
| super(destination); |
| this.count = count; |
| this.source = source; |
| } |
| error(err) { |
| if (!this.isStopped) { |
| const { source, count } = this; |
| if (count === 0) { |
| return super.error(err); |
| } |
| else if (count > -1) { |
| this.count = count - 1; |
| } |
| source.subscribe(this._unsubscribeAndRecycle()); |
| } |
| } |
| } |
| //# sourceMappingURL=retry.js.map |