first commit

1 files changed, 124 insertions, 0 deletions

diff --git a/node_modules/exponential-backoff/dist/backoff.js b/node_modules/exponential-backoff/dist/backoff.js
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+++ b/node_modules/exponential-backoff/dist/backoff.js
@@ -0,0 +1,124 @@
+"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");
+/**
+ * Executes a function with exponential backoff.
+ * @param request the function to be executed
+ * @param options options to customize the backoff behavior
+ * @returns Promise that resolves to the result of the `request` function
+ */
+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
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