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- 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
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