omelop
Version:
[](https://travis-ci.org/node-omelop/omelop)
63 lines • 5.06 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.MsgRemote = void 0;
const omelop_logger_1 = require("omelop-logger");
const path = require("path");
let logger = (0, omelop_logger_1.getLogger)('forward-log', path.basename(__filename));
/**
* Remote service for backend servers.
* Receive and handle request message forwarded from frontend server.
*/
function default_1(app) {
return new MsgRemote(app);
}
exports.default = default_1;
class MsgRemote {
constructor(app) {
this.app = app;
}
/**
* Forward message from frontend server to other server's handlers
*
* @param msg {Object} request message
* @param session {Object} session object for current request
* @param cb {Function} callback function
*/
forwardMessage(msg, session) {
return new Promise((resolve, reject) => {
let server = this.app.components.__server__;
let sessionService = this.app.components.__backendSession__;
if (!server) {
logger.error('server component not enable on %s', this.app.serverId);
reject(new Error('server component not enable'));
return;
}
if (!sessionService) {
logger.error('backend session component not enable on %s', this.app.serverId);
reject(new Error('backend sesssion component not enable'));
return;
}
// generate backend session for current request
let backendSession = sessionService.create(session);
// handle the request
logger.debug('session:[%s,%s,%s], handle message: %j', session.id, session.uid, session.frontendId, msg);
server.handle(msg, backendSession, function (err, resp) {
logger.debug('session:[%s,%s,%s], handle message result,err:%j,msg:%j,resp:%j', session.id, session.uid, session.frontendId, err, msg, resp);
// 如果有给response 那就不给connector错误。给response.
// 因为promise，所以与pomelo有点不一致，pomelo把err与resp一起传回connector了
if (err) {
if (resp) {
logger.error('session:[%s,%s,%s], handle message %j, error:%j', session.id, session.uid, session.frontendId, msg, err);
return resolve(resp);
}
reject(err);
}
else {
resolve(resp);
}
});
});
}
}
exports.MsgRemote = MsgRemote;
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