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- import { Subject } from '../Subject';
- import { tryCatch } from '../util/tryCatch';
- import { errorObject } from '../util/errorObject';
- import { OuterSubscriber } from '../OuterSubscriber';
- import { subscribeToResult } from '../util/subscribeToResult';
- /**
- * Returns an Observable that mirrors the source Observable with the exception of an `error`. If the source Observable
- * calls `error`, this method will emit the Throwable that caused the error to the Observable returned from `notifier`.
- * If that Observable calls `complete` or `error` then this method will call `complete` or `error` on the child
- * subscription. Otherwise this method will resubscribe to the source Observable.
- *
- * <img src="./img/retryWhen.png" width="100%">
- *
- * @param {function(errors: Observable): Observable} notifier - Receives an Observable of notifications with which a
- * user can `complete` or `error`, aborting the retry.
- * @return {Observable} The source Observable modified with retry logic.
- * @method retryWhen
- * @owner Observable
- */
- export function retryWhen(notifier) {
- return (source) => source.lift(new RetryWhenOperator(notifier, source));
- }
- class RetryWhenOperator {
- constructor(notifier, source) {
- this.notifier = notifier;
- this.source = source;
- }
- call(subscriber, source) {
- return source.subscribe(new RetryWhenSubscriber(subscriber, this.notifier, this.source));
- }
- }
- /**
- * We need this JSDoc comment for affecting ESDoc.
- * @ignore
- * @extends {Ignored}
- */
- class RetryWhenSubscriber extends OuterSubscriber {
- constructor(destination, notifier, source) {
- super(destination);
- this.notifier = notifier;
- this.source = source;
- }
- error(err) {
- if (!this.isStopped) {
- let errors = this.errors;
- let retries = this.retries;
- let retriesSubscription = this.retriesSubscription;
- if (!retries) {
- errors = new Subject();
- retries = tryCatch(this.notifier)(errors);
- if (retries === errorObject) {
- return super.error(errorObject.e);
- }
- retriesSubscription = subscribeToResult(this, retries);
- }
- else {
- this.errors = null;
- this.retriesSubscription = null;
- }
- this._unsubscribeAndRecycle();
- this.errors = errors;
- this.retries = retries;
- this.retriesSubscription = retriesSubscription;
- errors.next(err);
- }
- }
- /** @deprecated internal use only */ _unsubscribe() {
- const { errors, retriesSubscription } = this;
- if (errors) {
- errors.unsubscribe();
- this.errors = null;
- }
- if (retriesSubscription) {
- retriesSubscription.unsubscribe();
- this.retriesSubscription = null;
- }
- this.retries = null;
- }
- notifyNext(outerValue, innerValue, outerIndex, innerIndex, innerSub) {
- const { errors, retries, retriesSubscription } = this;
- this.errors = null;
- this.retries = null;
- this.retriesSubscription = null;
- this._unsubscribeAndRecycle();
- this.errors = errors;
- this.retries = retries;
- this.retriesSubscription = retriesSubscription;
- this.source.subscribe(this);
- }
- }
- //# sourceMappingURL=retryWhen.js.map
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