@fabric-es/fabric-cqrs/dist/utils/dispatcher.js

Hyperledger Fabric middleware for event sourcing and cqrs pattern

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.dispatcher = void 0;
const util_1 = __importDefault(require("util"));
const utils_1 = require("../store/utils");
const dispatcher = (actionDispatcher, options, onSuccess) => (args) => new Promise((resolve, reject) => {
    const { name, store, slice, SuccessAction, typeGuard, ErrorAction, logger } = options;
    const tid = utils_1.generateToken();
    const unsubscribe = store.subscribe(() => {
        const { tx_id, error, type } = store.getState()[slice];
        const result = store.getState()[slice].result;
        if (tx_id === tid && type === SuccessAction) {
            unsubscribe();
            const data = onSuccess ? onSuccess(result) : result;
            if (typeGuard)
                if (result === null) {
                    logger.info(util_1.default.format('actionName %s, tx_id: %s resolved', name, tx_id));
                    resolve({ data: null });
                }
                else if (typeGuard(result)) {
                    logger.info(util_1.default.format('actionName %s, tx_id: %s resolved', name, tx_id));
                    resolve({ data });
                }
                else {
                    logger.error(util_1.default.format('fail to pass TypeGuard, %s, %j', name, result));
                    reject(`fail to pass TypeGuard: ${name}`);
                }
            else {
                logger.info(util_1.default.format('actionName %s, tx_id: %s resolved', name, tx_id));
                resolve({ data });
            }
        }
        if (tx_id === tid && type === ErrorAction) {
            logger.warn(util_1.default.format('[dispatcher] ErrorAction: [%s], tx_id: %s, %s, %j', name, tid, ErrorAction, error));
            unsubscribe();
            reject(new Error(util_1.default.format('%s, %j', type, error)));
        }
    });
    store.dispatch(actionDispatcher({ tx_id: tid, args }));
    logger.info(util_1.default.format('[dispatcher] actionName: %s, tx_id: %s dispatched', name, tid));
})
    .then(({ data }) => ({
    status: 'OK',
    data,
}))
    .catch((error) => ({ status: 'ERROR', data: null, error }));
exports.dispatcher = dispatcher;
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