@feathersjs/transport-commons
Version:
Shared functionality for websocket providers
86 lines • 4.24 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.CombinedChannel = exports.Channel = exports.keys = void 0;
exports.channels = channels;
const feathers_1 = require("@feathersjs/feathers");
const commons_1 = require("@feathersjs/commons");
const flattenDeep_1 = __importDefault(require("lodash/flattenDeep"));
const base_1 = require("./channel/base");
Object.defineProperty(exports, "Channel", { enumerable: true, get: function () { return base_1.Channel; } });
const combined_1 = require("./channel/combined");
Object.defineProperty(exports, "CombinedChannel", { enumerable: true, get: function () { return combined_1.CombinedChannel; } });
const mixins_1 = require("./mixins");
Object.defineProperty(exports, "keys", { enumerable: true, get: function () { return mixins_1.keys; } });
const debug = (0, commons_1.createDebug)('@feathersjs/transport-commons/channels');
const { CHANNELS } = mixins_1.keys;
function channels() {
return (app) => {
if (typeof app.channel === 'function' && typeof app.publish === 'function') {
return;
}
Object.assign(app, (0, mixins_1.channelMixin)(), (0, mixins_1.publishMixin)());
Object.defineProperty(app, 'channels', {
get() {
return Object.keys(this[CHANNELS]);
}
});
app.mixins.push((service, path) => {
const { serviceEvents } = (0, feathers_1.getServiceOptions)(service);
if (typeof service.publish === 'function') {
return;
}
Object.assign(service, (0, mixins_1.publishMixin)());
serviceEvents.forEach((event) => {
service.on(event, function (data, hook) {
if (!hook) {
// Fake hook for custom events
hook = { path, service, app, result: data };
}
debug('Publishing event', event, hook.path);
const logError = (error) => debug(`Error in '${hook.path} ${event}' publisher`, error);
const servicePublishers = service[mixins_1.keys.PUBLISHERS];
const appPublishers = app[mixins_1.keys.PUBLISHERS];
// This will return the first publisher list that is not empty
// In the following precedence
const publisher =
// 1. Service publisher for a specific event
servicePublishers[event] ||
// 2. Service publisher for all events
servicePublishers[mixins_1.keys.ALL_EVENTS] ||
// 3. App publisher for a specific event
appPublishers[event] ||
// 4. App publisher for all events
appPublishers[mixins_1.keys.ALL_EVENTS] ||
// 5. No publisher
(() => { });
try {
Promise.resolve(publisher(data, hook))
.then((result) => {
if (!result) {
return;
}
const results = Array.isArray(result)
? (0, flattenDeep_1.default)(result).filter(Boolean)
: [result];
const channel = new combined_1.CombinedChannel(results);
if (channel && channel.length > 0) {
app.emit('publish', event, channel, hook, data);
}
else {
debug('No connections to publish to');
}
})
.catch(logError);
}
catch (error) {
logError(error);
}
});
});
});
};
}
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