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Просмотр файла: async.js
"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 });
exports.timeout = exports.concurrentValuesMap = exports.concurrentMap = exports.retryAsyncWithBackOffAndTimeout = exports.selectiveRetryAsyncWithBackOff = exports.retryAsyncWithBackOff = exports.retryAsync = exports.sleep = void 0;
var TAG = 'utils/src/async';
/** Sleep for a number of milliseconds */
function sleep(ms) {
return new Promise(function (resolve) { return setTimeout(resolve, ms); });
}
exports.sleep = sleep;
// Retries an async function when it raises an exeption
// if all the tries fail it raises the last thrown exeption
var retryAsync = function (inFunction, tries, params, delay, logger) {
if (delay === void 0) { delay = 100; }
if (logger === void 0) { logger = null; }
return __awaiter(void 0, void 0, void 0, function () {
var saveError, i, error_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
i = 0;
_a.label = 1;
case 1:
if (!(i < tries)) return [3 /*break*/, 7];
_a.label = 2;
case 2:
_a.trys.push([2, 4, , 6]);
return [4 /*yield*/, inFunction.apply(void 0, params)];
case 3:
// it awaits otherwise it'd always do all the retries
return [2 /*return*/, _a.sent()];
case 4:
error_1 = _a.sent();
return [4 /*yield*/, sleep(delay)];
case 5:
_a.sent();
saveError = error_1;
if (logger) {
logger("".concat(TAG, "/@retryAsync, Failed to execute function on try #").concat(i, ":"), error_1);
}
return [3 /*break*/, 6];
case 6:
i++;
return [3 /*break*/, 1];
case 7: throw saveError;
}
});
});
};
exports.retryAsync = retryAsync;
// Retries an async function when it raises an exeption
// if all the tries fail it raises the last thrown exeption
var retryAsyncWithBackOff = function (inFunction, tries, params, delay, factor, logger) {
if (delay === void 0) { delay = 100; }
if (factor === void 0) { factor = 1.5; }
if (logger === void 0) { logger = null; }
return __awaiter(void 0, void 0, void 0, function () {
var saveError, i, error_2;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
i = 0;
_a.label = 1;
case 1:
if (!(i < tries)) return [3 /*break*/, 7];
_a.label = 2;
case 2:
_a.trys.push([2, 4, , 6]);
return [4 /*yield*/, inFunction.apply(void 0, params)];
case 3:
// it awaits otherwise it'd always do all the retries
return [2 /*return*/, _a.sent()];
case 4:
error_2 = _a.sent();
return [4 /*yield*/, sleep(Math.pow(factor, i) * delay)];
case 5:
_a.sent();
saveError = error_2;
if (logger) {
logger("".concat(TAG, "/@retryAsync, Failed to execute function on try #").concat(i), error_2);
}
return [3 /*break*/, 6];
case 6:
i++;
return [3 /*break*/, 1];
case 7: throw saveError;
}
});
});
};
exports.retryAsyncWithBackOff = retryAsyncWithBackOff;
// Retries an async function when it raises an exeption
// if all the tries fail it raises the last thrown exeption
// throws automatically on specified errors
var selectiveRetryAsyncWithBackOff = function (inFunction, tries, dontRetry, params, delay, factor, logger) {
if (delay === void 0) { delay = 100; }
if (factor === void 0) { factor = 1.5; }
if (logger === void 0) { logger = null; }
return __awaiter(void 0, void 0, void 0, function () {
var saveError, i, error_3;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
i = 0;
_a.label = 1;
case 1:
if (!(i < tries)) return [3 /*break*/, 8];
_a.label = 2;
case 2:
_a.trys.push([2, 4, , 5]);
return [4 /*yield*/, inFunction.apply(void 0, params)];
case 3:
// it awaits otherwise it'd always do all the retries
return [2 /*return*/, _a.sent()];
case 4:
error_3 = _a.sent();
if (dontRetry.some(function (msg) { return error_3.message.includes(msg); })) {
throw error_3;
}
saveError = error_3;
if (logger) {
logger("".concat(TAG, "/@retryAsync, Failed to execute function on try #").concat(i), error_3);
}
return [3 /*break*/, 5];
case 5:
if (!(i < tries - 1)) return [3 /*break*/, 7];
return [4 /*yield*/, sleep(Math.pow(factor, i) * delay)];
case 6:
_a.sent();
_a.label = 7;
case 7:
i++;
return [3 /*break*/, 1];
case 8: throw saveError;
}
});
});
};
exports.selectiveRetryAsyncWithBackOff = selectiveRetryAsyncWithBackOff;
// Retries an async function when it raises an exeption
// Terminates any ongoing request when the timeout is reached
// if all the tries fail it raises the last thrown exeption
var retryAsyncWithBackOffAndTimeout = function (inFunction, tries, params, delayMs, factor, timeoutMs, logger) {
if (delayMs === void 0) { delayMs = 100; }
if (factor === void 0) { factor = 1.5; }
if (timeoutMs === void 0) { timeoutMs = 2000; }
if (logger === void 0) { logger = null; }
return __awaiter(void 0, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2 /*return*/, (0, exports.timeout)(exports.retryAsyncWithBackOff, [inFunction, tries, params, delayMs, factor, logger], timeoutMs, new Error("Timed out after ".concat(timeoutMs, "ms")), "".concat(TAG, "/@retryAsyncWithBackOffAndTimeout, Timed out after ").concat(timeoutMs, "ms"), logger)];
});
});
};
exports.retryAsyncWithBackOffAndTimeout = retryAsyncWithBackOffAndTimeout;
/**
* Map an async function over a list xs with a given concurrency level
*
* @param concurrency number of `mapFn` concurrent executions
* @param xs list of value
* @param mapFn mapping function
*/
function concurrentMap(concurrency, xs, mapFn) {
return __awaiter(this, void 0, void 0, function () {
var res, _loop_1, i;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
res = [];
_loop_1 = function (i) {
var remaining, sliceSize, slice, _b, _c;
return __generator(this, function (_d) {
switch (_d.label) {
case 0:
remaining = xs.length - i;
sliceSize = Math.min(remaining, concurrency);
slice = xs.slice(i, i + sliceSize);
_c = (_b = res).concat;
return [4 /*yield*/, Promise.all(slice.map(function (elem, index) { return mapFn(elem, i + index); }))];
case 1:
res = _c.apply(_b, [_d.sent()]);
return [2 /*return*/];
}
});
};
i = 0;
_a.label = 1;
case 1:
if (!(i < xs.length)) return [3 /*break*/, 4];
return [5 /*yield**/, _loop_1(i)];
case 2:
_a.sent();
_a.label = 3;
case 3:
i += concurrency;
return [3 /*break*/, 1];
case 4: return [2 /*return*/, res];
}
});
});
}
exports.concurrentMap = concurrentMap;
/**
* Map an async function over the values in Object x with a given concurrency level
*
* @param concurrency number of `mapFn` concurrent executions
* @param x associative array of values
* @param mapFn mapping function
*/
function concurrentValuesMap(concurrency, x, mapFn) {
return __awaiter(this, void 0, void 0, function () {
var xk, xv, res;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
xk = Object.keys(x);
xv = [];
xk.forEach(function (k) { return xv.push(x[k]); });
return [4 /*yield*/, concurrentMap(concurrency, xv, function (val, idx) { return mapFn(val, xk[idx]); })];
case 1:
res = _a.sent();
return [2 /*return*/, res.reduce(function (output, value, index) {
output[xk[index]] = value;
return output;
}, {})];
}
});
});
}
exports.concurrentValuesMap = concurrentValuesMap;
/**
* Wraps an async function in a timeout before calling it.
*
* @param inFunction The async function to call
* @param params The parameters of the async function
* @param timeoutMs The timeout in milliseconds
* @param timeoutError The value to which the returned Promise should reject to
*/
var timeout = function (inFunction, params, timeoutMs, timeoutError, timeoutLogMsg, logger) {
if (timeoutLogMsg === void 0) { timeoutLogMsg = null; }
if (logger === void 0) { logger = null; }
var timer;
return Promise.race([
inFunction.apply(void 0, params),
new Promise(function (_resolve, reject) {
timer = setTimeout(function () {
if (logger) {
logger(timeoutLogMsg || "".concat(TAG, "/@timeout Timed out after ").concat(timeoutMs, "ms"));
}
reject(timeoutError);
}, timeoutMs);
}),
]).finally(function () {
clearTimeout(timer);
});
};
exports.timeout = timeout;
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