kentico-cloud-delivery
Version:
Official Kentico Cloud Delivery SDK
44 lines • 1.97 kB
JavaScript
;
exports.__esModule = true;
var rxjs_1 = require("rxjs");
var operators_1 = require("rxjs/operators");
var DeliveryRetryStrategy = /** @class */ (function () {
function DeliveryRetryStrategy() {
var _this = this;
this.strategy = function (options) { return function (attempts) {
return attempts.pipe(operators_1.mergeMap(function (error, i) {
var retryAttempt = i + 1;
// if maximum number of retries have been met
// or response is a status code we don't wish to retry, throw error
if (retryAttempt > options.maxRetryAttempts ||
options.excludedStatusCodes.find(function (e) { return e === error.status; })) {
return rxjs_1.throwError(error);
}
// calculate retry time
var retryTimeout = _this.getRetryTimeout(retryAttempt);
// debug log attempt
_this.debugLogAttempt(retryAttempt, retryTimeout);
return rxjs_1.timer(retryTimeout);
}));
}; };
}
/**
* Calculates retry attempt timeout in ms
* @param attempt Index of the attempt to calculate increasing delay when retrying
*/
DeliveryRetryStrategy.prototype.getRetryTimeout = function (attempt) {
return Math.pow(2, attempt) * 100;
};
/**
* Logs attempt in console.
* This function is also used for testing in jasmine spy
* @param attempt Index of attempt
*/
DeliveryRetryStrategy.prototype.debugLogAttempt = function (attempt, retryTimeout) {
console.warn("Attempt " + attempt + ": retrying in " + retryTimeout + "ms");
};
return DeliveryRetryStrategy;
}());
exports.DeliveryRetryStrategy = DeliveryRetryStrategy;
exports.deliveryRetryStrategy = new DeliveryRetryStrategy();
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