# Inngest (integration)

#### To integrate Inngest with your app and Flowise...

you'll set up Inngest in your code (Node.js/Python), define functions/workflows, connect your app to the Inngest platform (via CLI, cloud integration like Vercel/DO, or manual sync), and then trigger these workflows from your app or Flowise, potentially by invoking Inngest functions directly or sending events, using tools like `step.invoke()` or event triggers, ensuring your Flowise app calls your Inngest-connected backend to initiate these processes. Here's a step-by-step guide:1. Set Up Inngest in Your Application

* **Install SDK:** Add the Inngest SDK to your project (e.g., `npm install inngest` for Node.js).
* **Create Client:** Initialize the Inngest client in your app.
* **Define Functions:** Write your background jobs as Inngest functions, using `inngest.createFunction()`.
* **Create an HTTP Endpoint:** Set up an HTTP server (e.g., Express, Next.js API route) to serve your Inngest functions, allowing Inngest to communicate with them. 

#### TS Code (typescript)

```
// Example: Inngest client and function (Node.js)
import { Inngest } from 'inngest';

const inngest = new Inngest({ id: 'my-app-id' });

const myFunction = inngest.createFunction({ name: 'my-workflow' }, async ({ event }) => {
  console.log('Workflow triggered with event:', event);
  // Your logic here, potentially calling Flowise APIs
  return { success: true };
});

// Your HTTP server would expose this function
```

#### Connect to Inngest

* **Vercel/DigitalOcean Integration:** Use the official marketplace integrations for automatic syncing and deployment management.
* **Manual Sync:** If not using an integration, sync manually by providing your app's `serve()` URL in the Inngest dashboard.
* **Self-hosting CLI:** Run `npx inngest-cli@latest dev` for a local server or `inngest start` for self-hosting. 

#### Integrate with Flowise

* **Call Your App's API:** From Flowise, use a "HTTP Request" node to call an endpoint on *your* application's backend (the one connected to Inngest).
* **Trigger Inngest from Your App:** Your Flowise HTTP call will hit your app, which then:
  * **Sends an Event:** Triggers an Inngest event (e.g., `inngest.send({ name: 'flowise-trigger', data: { ... } })`).
  * **Invokes a Function Directly:** Uses `step.invoke()` within an *existing* Inngest function to call another one, breaking down complex logic.
* **Example Flowise HTTP Node:**
  * **URL:** `your-app.com` (your Inngest HTTP endpoint)
  * **Method:** `POST`
  * **Body:** `{ "name": "my-flowise-event", "data": { "userId": "123" } }` 

#### Orchestration with Inngest

* **Define Workflows:** Use Inngest's `step.run()` or `step.invoke()` to create complex sequences, parallel tasks, and conditional logic within your functions, coordinating steps like data processing, API calls (including to Flowise), and notifications.
* **State Management:** Inngest handles the state, retries, and durable execution, so your workflows don't break if parts fail. 

#### Key Concepts for Flowise/Inngest

* **Inngest as the Orchestrator:** Inngest manages the *workflow* of tasks (e.g., data fetching -> Flowise processing -> data storage).
* **Your App as the Bridge:** Your app exposes endpoints that Flowise calls, and your app uses the Inngest SDK to tell Inngest what to do next.
* **`step.invoke()`:** Great for breaking complex workflows into reusable