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Contents
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
Version data entries
49 entries across 49 versions & 4 rubygems