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JavaScript

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
var options_1 = require("./options");
var delay_factory_1 = require("./delay/delay.factory");
function backOff(request, options) {
if (options === void 0) { options = {}; }
return __awaiter(this, void 0, void 0, function () {
var sanitizedOptions, backOff;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
sanitizedOptions = options_1.getSanitizedOptions(options);
backOff = new BackOff(request, sanitizedOptions);
return [4 /*yield*/, backOff.execute()];
case 1: return [2 /*return*/, _a.sent()];
}
});
});
}
exports.backOff = backOff;
var BackOff = /** @class */ (function () {
function BackOff(request, options) {
this.request = request;
this.options = options;
this.attemptNumber = 0;
}
BackOff.prototype.execute = function () {
return __awaiter(this, void 0, void 0, function () {
var e_1, shouldRetry;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (!!this.attemptLimitReached) return [3 /*break*/, 7];
_a.label = 1;
case 1:
_a.trys.push([1, 4, , 6]);
return [4 /*yield*/, this.applyDelay()];
case 2:
_a.sent();
return [4 /*yield*/, this.request()];
case 3: return [2 /*return*/, _a.sent()];
case 4:
e_1 = _a.sent();
this.attemptNumber++;
return [4 /*yield*/, this.options.retry(e_1, this.attemptNumber)];
case 5:
shouldRetry = _a.sent();
if (!shouldRetry || this.attemptLimitReached) {
throw e_1;
}
return [3 /*break*/, 6];
case 6: return [3 /*break*/, 0];
case 7: throw new Error("Something went wrong.");
}
});
});
};
Object.defineProperty(BackOff.prototype, "attemptLimitReached", {
get: function () {
return this.attemptNumber >= this.options.numOfAttempts;
},
enumerable: true,
configurable: true
});
BackOff.prototype.applyDelay = function () {
return __awaiter(this, void 0, void 0, function () {
var delay;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
delay = delay_factory_1.DelayFactory(this.options, this.attemptNumber);
return [4 /*yield*/, delay.apply()];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
return BackOff;
}());
//# sourceMappingURL=backoff.js.map