ts-retry-promise
Version:
retry for functions returning a promise
216 lines • 9.59 kB
JavaScript
;
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
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 });
exports.NotRetryableError = exports.RetryError = exports.notEmpty = exports.customizeRetry = exports.customizeDecorator = exports.retryDecorator = exports.retry = exports.wait = exports.defaultRetryConfig = void 0;
var timeout_1 = require("./timeout");
var fixedBackoff = function (attempt, delay) { return delay; };
var linearBackoff = function (attempt, delay) { return attempt * delay; };
var exponentialBackoff = function (attempt, delay) { return Math.pow(delay, attempt); };
exports.defaultRetryConfig = {
backoff: "FIXED",
delay: 100,
logger: function () { return undefined; },
maxBackOff: 5 * 60 * 1000,
retries: 10,
timeout: 60 * 1000,
until: function () { return true; },
retryIf: function () { return true; }
};
function wait(ms) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2 /*return*/, new Promise(function (resolve) { return setTimeout(resolve, ms); })];
});
});
}
exports.wait = wait;
function retry(f, config) {
return __awaiter(this, void 0, void 0, function () {
var effectiveConfig;
return __generator(this, function (_a) {
effectiveConfig = Object.assign({}, exports.defaultRetryConfig, config);
return [2 /*return*/, timeout_1.timeout(effectiveConfig.timeout, function (done) { return _retry(f, effectiveConfig, done); })];
});
});
}
exports.retry = retry;
function retryDecorator(func, config) {
return function () {
var args = [];
for (var _i = 0; _i < arguments.length; _i++) {
args[_i] = arguments[_i];
}
return retry(function () { return func.apply(void 0, args); }, config);
};
}
exports.retryDecorator = retryDecorator;
function customizeDecorator(customConfig) {
return function (args, config) { return retryDecorator(args, Object.assign({}, customConfig, config)); };
}
exports.customizeDecorator = customizeDecorator;
// tslint:disable-next-line
function customizeRetry(customConfig) {
return function (f, c) {
var customized = Object.assign({}, customConfig, c);
return retry(f, customized);
};
}
exports.customizeRetry = customizeRetry;
function _retry(f, config, done) {
return __awaiter(this, void 0, void 0, function () {
var lastError, delay, retries, i, result, error_1, millisToWait;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
switch (config.backoff) {
case "EXPONENTIAL":
delay = exponentialBackoff;
break;
case "FIXED":
delay = fixedBackoff;
break;
case "LINEAR":
delay = linearBackoff;
break;
default:
delay = config.backoff;
}
if (config.retries === "INFINITELY") {
retries = Number.MAX_SAFE_INTEGER;
}
else {
retries = config.retries;
}
i = 0;
_a.label = 1;
case 1:
if (!(i <= retries)) return [3 /*break*/, 8];
_a.label = 2;
case 2:
_a.trys.push([2, 4, , 5]);
return [4 /*yield*/, f()];
case 3:
result = _a.sent();
if (config.until(result)) {
return [2 /*return*/, result];
}
config.logger("Until condition not met by " + result);
return [3 /*break*/, 5];
case 4:
error_1 = _a.sent();
if (!config.retryIf(error_1)) {
throw error_1;
}
if (error_1.name === NotRetryableError.name) {
throw new RetryError("Met not retryable error. Last error: " + error_1, error_1);
}
lastError = error_1;
config.logger("Retry failed: " + error_1.message);
return [3 /*break*/, 5];
case 5:
millisToWait = delay(i + 1, config.delay);
return [4 /*yield*/, wait(millisToWait > config.maxBackOff ? config.maxBackOff : millisToWait)];
case 6:
_a.sent();
if (done()) {
return [3 /*break*/, 8];
}
_a.label = 7;
case 7:
i++;
return [3 /*break*/, 1];
case 8: throw new RetryError("All retries failed. Last error: " + lastError, lastError);
}
});
});
}
exports.notEmpty = function (result) {
if (Array.isArray(result)) {
return result.length > 0;
}
return result !== null && result !== undefined;
};
var RetryError = /** @class */ (function (_super) {
__extends(RetryError, _super);
/* istanbul ignore next */
function RetryError(message, lastError) {
var _this = _super.call(this, message) || this;
_this.lastError = lastError;
return _this;
}
return RetryError;
}(Error));
exports.RetryError = RetryError;
// tslint:disable-next-line:max-classes-per-file
var BaseError = /** @class */ (function () {
function BaseError(message) {
var args = [];
for (var _i = 1; _i < arguments.length; _i++) {
args[_i - 1] = arguments[_i];
}
this.message = message;
Error.apply(this, args);
}
return BaseError;
}());
BaseError.prototype = new Error();
// tslint:disable-next-line:max-classes-per-file
var NotRetryableError = /** @class */ (function (_super) {
__extends(NotRetryableError, _super);
function NotRetryableError(message) {
var _this = _super.call(this, message) || this;
Object.defineProperty(_this, 'name', { value: _this.constructor.name });
return _this;
}
return NotRetryableError;
}(BaseError));
exports.NotRetryableError = NotRetryableError;
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