@fabric-es/fabric-cqrs
Version:
Hyperledger Fabric middleware for event sourcing and cqrs pattern
37 lines • 1.77 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const util_1 = __importDefault(require("util"));
const redux_observable_1 = require("redux-observable");
const rxjs_1 = require("rxjs");
const operators_1 = require("rxjs/operators");
const action_1 = require("../action");
const { MERGE_ENTITY, mergeEntityError, mergeEntitySuccess } = action_1.action;
exports.default = (action$, _, { queryDatabase, reducers, logger, }) => action$.pipe(redux_observable_1.ofType(MERGE_ENTITY), operators_1.map(({ payload }) => payload), operators_1.mergeMap(({ tx_id, args: { commit } }) => {
let promise;
let reducer;
if (!commit || !reducers) {
promise = Promise.resolve(mergeEntityError({ tx_id, error: `invalid input argument` }));
}
else {
reducer = reducers[commit.entityName];
promise = reducer
? queryDatabase
.mergeEntity({ commit, reducer })
.then(({ data, status, errors }) => status === 'OK'
? mergeEntitySuccess({ tx_id, result: data })
: mergeEntityError({ tx_id, error: errors }))
.catch((error) => {
logger.error(util_1.default.format('[store/projection/mergeEntity.js] fail to %s: %s, %j', MERGE_ENTITY, commit.entityName, error));
return mergeEntityError({ tx_id, error });
})
: Promise.resolve(mergeEntityError({
tx_id,
error: `entityName ${commit.entityName}: reducer not found`,
}));
}
return rxjs_1.from(promise);
}));
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