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112 lines
4.1 KiB
112 lines
4.1 KiB
4 months ago
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'use strict';
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Object.defineProperty(exports, '__esModule', { value: true });
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var tslib = require('tslib');
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var core = require('../core');
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var utilities = require('../../utilities');
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function buildDelayFunction(delayOptions) {
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var _a = delayOptions || {}, _b = _a.initial, initial = _b === void 0 ? 300 : _b, _c = _a.jitter, jitter = _c === void 0 ? true : _c, _d = _a.max, max = _d === void 0 ? Infinity : _d;
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var baseDelay = jitter ? initial : initial / 2;
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return function delayFunction(count) {
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var delay = Math.min(max, baseDelay * Math.pow(2, count));
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if (jitter) {
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delay = Math.random() * delay;
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}
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return delay;
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};
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}
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function buildRetryFunction(retryOptions) {
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var _a = retryOptions || {}, retryIf = _a.retryIf, _b = _a.max, max = _b === void 0 ? 5 : _b;
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return function retryFunction(count, operation, error) {
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if (count >= max)
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return false;
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return retryIf ? retryIf(error, operation) : !!error;
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};
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}
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var RetryableOperation = (function () {
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function RetryableOperation(observer, operation, forward, delayFor, retryIf) {
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var _this = this;
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this.observer = observer;
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this.operation = operation;
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this.forward = forward;
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this.delayFor = delayFor;
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this.retryIf = retryIf;
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this.retryCount = 0;
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this.currentSubscription = null;
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this.onError = function (error) { return tslib.__awaiter(_this, void 0, void 0, function () {
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var shouldRetry;
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return tslib.__generator(this, function (_a) {
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switch (_a.label) {
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case 0:
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this.retryCount += 1;
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return [4 , this.retryIf(this.retryCount, this.operation, error)];
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case 1:
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shouldRetry = _a.sent();
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if (shouldRetry) {
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this.scheduleRetry(this.delayFor(this.retryCount, this.operation, error));
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return [2 ];
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}
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this.observer.error(error);
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return [2 ];
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}
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});
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}); };
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this.try();
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}
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RetryableOperation.prototype.cancel = function () {
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if (this.currentSubscription) {
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this.currentSubscription.unsubscribe();
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}
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clearTimeout(this.timerId);
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this.timerId = undefined;
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this.currentSubscription = null;
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};
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RetryableOperation.prototype.try = function () {
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this.currentSubscription = this.forward(this.operation).subscribe({
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next: this.observer.next.bind(this.observer),
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error: this.onError,
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complete: this.observer.complete.bind(this.observer),
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});
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};
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RetryableOperation.prototype.scheduleRetry = function (delay) {
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var _this = this;
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if (this.timerId) {
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throw new Error("RetryLink BUG! Encountered overlapping retries");
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}
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this.timerId = setTimeout(function () {
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_this.timerId = undefined;
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_this.try();
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}, delay);
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};
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return RetryableOperation;
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}());
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var RetryLink = (function (_super) {
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tslib.__extends(RetryLink, _super);
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function RetryLink(options) {
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var _this = _super.call(this) || this;
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var _a = options || {}, attempts = _a.attempts, delay = _a.delay;
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_this.delayFor =
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typeof delay === "function" ? delay : buildDelayFunction(delay);
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_this.retryIf =
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typeof attempts === "function" ? attempts : buildRetryFunction(attempts);
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return _this;
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}
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RetryLink.prototype.request = function (operation, nextLink) {
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var _this = this;
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return new utilities.Observable(function (observer) {
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var retryable = new RetryableOperation(observer, operation, nextLink, _this.delayFor, _this.retryIf);
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return function () {
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retryable.cancel();
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};
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});
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};
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return RetryLink;
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}(core.ApolloLink));
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exports.RetryLink = RetryLink;
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//# sourceMappingURL=retry.cjs.map
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