pg-transactional-outbox
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A PostgreSQL based transactional outbox and inbox pattern implementation to support exactly once message processing (with at least once message delivery).
39 lines • 1.99 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());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.defaultMessageProcessingDbClientStrategy = void 0;
const pg_1 = require("pg");
const error_1 = require("../common/error");
const utils_1 = require("../common/utils");
/**
* The default message processing uses a single pool based on the configured
* `pgConfig` settings.
*/
const defaultMessageProcessingDbClientStrategy = (config, logger) => {
const pool = new pg_1.Pool(config.dbHandlerConfig);
pool.on('error', (error) => {
logger.error((0, error_1.ensureExtendedError)(error, 'DB_ERROR'), 'PostgreSQL pool error');
});
return {
getClient: (_message) => __awaiter(void 0, void 0, void 0, function* () { return yield (0, utils_1.getClient)(pool, logger); }),
shutdown: () => __awaiter(void 0, void 0, void 0, function* () {
pool.removeAllListeners();
try {
yield pool.end();
}
catch (error) {
logger.error((0, error_1.ensureExtendedError)(error, 'DB_ERROR'), 'Message processing pool shutdown error');
}
}),
};
};
exports.defaultMessageProcessingDbClientStrategy = defaultMessageProcessingDbClientStrategy;
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