typeorm-transactional-async-callbacks
Version:
A Transactional Method Decorator for typeorm that uses cls-hooked to handle and propagate transactions between different repositories and service methods. Inpired by Spring Trasnactional Annotation and Sequelize CLS
141 lines • 7.21 kB
JavaScript
;
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.runOnTransactionComplete = exports.runOnTransactionRollback = exports.runOnTransactionCommit = exports.runInNewHookContext = exports.createEventEmitterInNewContext = exports.runAndTriggerHooks = exports.getTransactionalContextHook = void 0;
var events_1 = require("events");
var common_1 = require("../common");
var getTransactionalContextHook = function () {
var context = (0, common_1.getTransactionalContext)();
var emitter = (0, common_1.getHookInContext)(context);
if (!emitter) {
throw new Error('No hook manager found in context. Are you using @Transactional()?');
}
return emitter;
};
exports.getTransactionalContextHook = getTransactionalContextHook;
var runAndTriggerHooks = function (hook, cb) { return __awaiter(void 0, void 0, void 0, function () {
var result, commitPromises_1, promiseCollector_1, commitPromise, err_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 3, , 4]);
return [4 /*yield*/, Promise.resolve(cb())];
case 1:
result = _a.sent();
commitPromises_1 = [];
promiseCollector_1 = function (promise) {
commitPromises_1.push(promise);
};
commitPromise = new Promise(function (resolve, reject) {
setImmediate(function () {
// Emit the 'commit' event and collect promises
hook.emit('commit', promiseCollector_1);
// Once all handlers have been called, resolve the promise
Promise.all(commitPromises_1)
.then(function () { return resolve(); })
.catch(function (err) {
reject(err);
})
.finally(function () {
// Always clean up after commit handlers, regardless of success/failure
hook.emit('end', undefined);
hook.removeAllListeners();
});
});
});
// Wait for all commit handlers to complete
return [4 /*yield*/, commitPromise];
case 2:
// Wait for all commit handlers to complete
_a.sent();
return [2 /*return*/, result];
case 3:
err_1 = _a.sent();
setImmediate(function () {
hook.emit('rollback', err_1);
hook.emit('end', err_1);
hook.removeAllListeners();
});
throw err_1;
case 4: return [2 /*return*/];
}
});
}); };
exports.runAndTriggerHooks = runAndTriggerHooks;
var createEventEmitterInNewContext = function () {
var options = (0, common_1.getTransactionalOptions)();
var emitter = new events_1.EventEmitter();
emitter.setMaxListeners(options.maxHookHandlers);
return emitter;
};
exports.createEventEmitterInNewContext = createEventEmitterInNewContext;
var runInNewHookContext = function (context, cb) { return __awaiter(void 0, void 0, void 0, function () {
var hook;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
hook = (0, exports.createEventEmitterInNewContext)();
return [4 /*yield*/, context.run(function () {
(0, common_1.setHookInContext)(context, hook);
return (0, exports.runAndTriggerHooks)(hook, cb);
})];
case 1: return [2 /*return*/, _a.sent()];
}
});
}); };
exports.runInNewHookContext = runInNewHookContext;
var runOnTransactionCommit = function (cb) {
(0, exports.getTransactionalContextHook)().once('commit', function (promiseCollector) {
var result = cb();
// If the original callback returns a promise, we need to collect it
if (result && typeof result.then === 'function') {
promiseCollector(result);
}
return result;
});
};
exports.runOnTransactionCommit = runOnTransactionCommit;
var runOnTransactionRollback = function (cb) {
(0, exports.getTransactionalContextHook)().once('rollback', cb);
};
exports.runOnTransactionRollback = runOnTransactionRollback;
var runOnTransactionComplete = function (cb) {
(0, exports.getTransactionalContextHook)().once('end', cb);
};
exports.runOnTransactionComplete = runOnTransactionComplete;
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