work.suroh.tk/node_modules/rxjs/operators/retry.js

65 lines
2.6 KiB
JavaScript

"use strict";
var __extends = (this && this.__extends) || function (d, b) {
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var Subscriber_1 = require('../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
*/
function retry(count) {
if (count === void 0) { count = -1; }
return function (source) { return source.lift(new RetryOperator(count, source)); };
}
exports.retry = retry;
var RetryOperator = (function () {
function RetryOperator(count, source) {
this.count = count;
this.source = source;
}
RetryOperator.prototype.call = function (subscriber, source) {
return source.subscribe(new RetrySubscriber(subscriber, this.count, this.source));
};
return RetryOperator;
}());
/**
* We need this JSDoc comment for affecting ESDoc.
* @ignore
* @extends {Ignored}
*/
var RetrySubscriber = (function (_super) {
__extends(RetrySubscriber, _super);
function RetrySubscriber(destination, count, source) {
_super.call(this, destination);
this.count = count;
this.source = source;
}
RetrySubscriber.prototype.error = function (err) {
if (!this.isStopped) {
var _a = this, source = _a.source, count = _a.count;
if (count === 0) {
return _super.prototype.error.call(this, err);
}
else if (count > -1) {
this.count = count - 1;
}
source.subscribe(this._unsubscribeAndRecycle());
}
};
return RetrySubscriber;
}(Subscriber_1.Subscriber));
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