n8n
Version:
n8n Workflow Automation Tool
57 lines • 2.05 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getInstance = exports.Push = void 0;
const sseChannel = require("sse-channel");
const n8n_workflow_1 = require("n8n-workflow");
class Push {
constructor() {
this.connections = {};
this.channel = new sseChannel({
cors: {
origins: ['http://localhost:8080'],
},
});
this.channel.on('disconnect', (channel, res) => {
if (res.req !== undefined) {
n8n_workflow_1.LoggerProxy.debug(`Remove editor-UI session`, { sessionId: res.req.query.sessionId });
delete this.connections[res.req.query.sessionId];
}
});
}
add(sessionId, req, res) {
n8n_workflow_1.LoggerProxy.debug(`Add editor-UI session`, { sessionId });
if (this.connections[sessionId] !== undefined) {
this.connections[sessionId].end();
this.channel.removeClient(this.connections[sessionId]);
}
this.connections[sessionId] = res;
this.channel.addClient(req, res);
}
send(type, data, sessionId) {
if (sessionId !== undefined && this.connections[sessionId] === undefined) {
n8n_workflow_1.LoggerProxy.error(`The session "${sessionId}" is not registred.`, { sessionId });
return;
}
n8n_workflow_1.LoggerProxy.debug(`Send data of type "${type}" to editor-UI`, { dataType: type, sessionId });
const sendData = {
type,
data,
};
if (sessionId === undefined) {
this.channel.send(JSON.stringify(sendData));
}
else {
this.channel.send(JSON.stringify(sendData), [this.connections[sessionId]]);
}
}
}
exports.Push = Push;
let activePushInstance;
function getInstance() {
if (activePushInstance === undefined) {
activePushInstance = new Push();
}
return activePushInstance;
}
exports.getInstance = getInstance;
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