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feat(core): Add support for WebSockets as an alternative to Server-Sent Events (#5443)

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Co-authored-by: Matthijs Knigge <matthijs@volcano.nl>
This commit is contained in:
कारतोफ्फेलस्क्रिप्ट™
2023-02-10 15:02:47 +01:00
committed by GitHub
parent 5194513850
commit 538984dc2f
23 changed files with 457 additions and 400 deletions
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21
packages/cli/src/AbstractServer.ts
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@@ -30,6 +30,8 @@ import { WEBHOOK_METHODS } from '@/WebhookHelpers';
const emptyBuffer = Buffer.alloc(0);
export abstract class AbstractServer {
protected server: Server;
protected app: express.Application;
protected externalHooks: IExternalHooksClass;
@@ -73,7 +75,7 @@ export abstract class AbstractServer {
this.activeWorkflowRunner = ActiveWorkflowRunner.getInstance();
}
private async setupCommonMiddlewares() {
private async setupErrorHandlers() {
const { app } = this;
// Augment errors sent to Sentry
@@ -82,6 +84,10 @@ export abstract class AbstractServer {
} = await import('@sentry/node');
app.use(requestHandler());
app.use(errorHandler());
}
private async setupCommonMiddlewares() {
const { app } = this;
// Compress the response data
app.use(compression());
@@ -147,6 +153,8 @@ export abstract class AbstractServer {
this.app.use(corsMiddleware);
}
protected setupPushServer() {}
private async setupHealthCheck() {
this.app.use((req, res, next) => {
if (!Db.isInitialized) {
@@ -392,10 +400,9 @@ export abstract class AbstractServer {
async start(): Promise<void> {
const { app, externalHooks, protocol, sslKey, sslCert } = this;
let server: Server;
if (protocol === 'https' && sslKey && sslCert) {
const https = await import('https');
server = https.createServer(
this.server = https.createServer(
{
key: await readFile(this.sslKey, 'utf8'),
cert: await readFile(this.sslCert, 'utf8'),
@@ -404,13 +411,13 @@ export abstract class AbstractServer {
);
} else {
const http = await import('http');
server = http.createServer(app);
this.server = http.createServer(app);
}
const PORT = config.getEnv('port');
const ADDRESS = config.getEnv('listen_address');
server.on('error', (error: Error & { code: string }) => {
this.server.on('error', (error: Error & { code: string }) => {
if (error.code === 'EADDRINUSE') {
console.log(
`n8n's port ${PORT} is already in use. Do you have another instance of n8n running already?`,
@@ -419,8 +426,10 @@ export abstract class AbstractServer {
}
});
await new Promise<void>((resolve) => server.listen(PORT, ADDRESS, () => resolve()));
await new Promise<void>((resolve) => this.server.listen(PORT, ADDRESS, () => resolve()));
await this.setupErrorHandlers();
this.setupPushServer();
await this.setupCommonMiddlewares();
if (inDevelopment) {
this.setupDevMiddlewares();