+++ /dev/null
-import { Operator } from '../Operator';
-import { Subscriber } from '../Subscriber';
-import { Observable } from '../Observable';
-import { Subject } from '../Subject';
-import { Subscription } from '../Subscription';
-
-import { MonoTypeOperatorFunction, TeardownLogic } from '../types';
-import { SimpleOuterSubscriber, innerSubscribe, SimpleInnerSubscriber } from '../innerSubscribe';
-
-/**
- * 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.
- *
- * ![](retryWhen.png)
- *
- * @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<T>(notifier: (errors: Observable<any>) => Observable<any>): MonoTypeOperatorFunction<T> {
- return (source: Observable<T>) => source.lift(new RetryWhenOperator(notifier, source));
-}
-
-class RetryWhenOperator<T> implements Operator<T, T> {
- constructor(protected notifier: (errors: Observable<any>) => Observable<any>,
- protected source: Observable<T>) {
- }
-
- call(subscriber: Subscriber<T>, source: any): TeardownLogic {
- return source.subscribe(new RetryWhenSubscriber(subscriber, this.notifier, this.source));
- }
-}
-
-/**
- * We need this JSDoc comment for affecting ESDoc.
- * @ignore
- * @extends {Ignored}
- */
-class RetryWhenSubscriber<T, R> extends SimpleOuterSubscriber<T, R> {
-
- private errors?: Subject<any>;
- private retries?: Observable<any>;
- private retriesSubscription?: Subscription;
-
- constructor(destination: Subscriber<R>,
- private notifier: (errors: Observable<any>) => Observable<any>,
- private source: Observable<T>) {
- super(destination);
- }
-
- error(err: any) {
- if (!this.isStopped) {
-
- let errors = this.errors;
- let retries: any = this.retries;
- let retriesSubscription = this.retriesSubscription;
-
- if (!retries) {
- errors = new Subject();
- try {
- const { notifier } = this;
- retries = notifier(errors);
- } catch (e) {
- return super.error(e);
- }
- retriesSubscription = innerSubscribe(retries, new SimpleInnerSubscriber(this));
- } else {
- this.errors = undefined;
- this.retriesSubscription = undefined;
- }
-
- this._unsubscribeAndRecycle();
-
- this.errors = errors;
- this.retries = retries;
- this.retriesSubscription = retriesSubscription;
-
- errors!.next(err);
- }
- }
-
- /** @deprecated This is an internal implementation detail, do not use. */
- _unsubscribe() {
- const { errors, retriesSubscription } = this;
- if (errors) {
- errors.unsubscribe();
- this.errors = undefined;
- }
- if (retriesSubscription) {
- retriesSubscription.unsubscribe();
- this.retriesSubscription = undefined;
- }
- this.retries = undefined;
- }
-
- notifyNext(): void {
- const { _unsubscribe } = this;
-
- this._unsubscribe = null!;
- this._unsubscribeAndRecycle();
- this._unsubscribe = _unsubscribe;
-
- this.source.subscribe(this);
- }
-}