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@saga-bus/nextjs

v0.2.2

Published

Next.js helpers for saga-bus

Downloads

25

Vulnerabilities

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Links

Git

Maintainers

deanforandeanforan

Keywords

sagamessage-busnextjsreactapp-router

Readme

@saga-bus/nextjs

Next.js helpers for saga-bus integration.

Installation

pnpm add @saga-bus/nextjs

Usage

Server Setup

// lib/saga-bus.ts
import { createSagaBus } from "@saga-bus/nextjs/server";
import { InMemoryTransport } from "@saga-bus/transport-inmemory";
import { InMemorySagaStore } from "@saga-bus/store-inmemory";

export const sagaBus = createSagaBus({
  transport: new InMemoryTransport(),
  store: new InMemorySagaStore(),
});

API Route (App Router)

// app/api/saga/route.ts
import { createSagaHandler } from "@saga-bus/nextjs/api";
import { sagaBus } from "@/lib/saga-bus";

export const POST = createSagaHandler(sagaBus);

Server Components

// app/orders/[id]/page.tsx
import { getSagaState } from "@saga-bus/nextjs/server";
import { sagaBus } from "@/lib/saga-bus";

export default async function OrderPage({ params }: { params: { id: string } }) {
  const state = await getSagaState(sagaBus, "OrderSaga", params.id);
  return <div>Status: {state?.status}</div>;
}

Client Components

// components/OrderStatus.tsx
"use client";

import { useSagaState } from "@saga-bus/nextjs/client";

export function OrderStatus({ orderId }: { orderId: string }) {
  const { state, isLoading, publish } = useSagaState("OrderSaga", orderId);

  if (isLoading) return <div>Loading...</div>;

  return (
    <div>
      <p>Status: {state?.status}</p>
      <button onClick={() => publish("OrderCancelled", { orderId })}>
        Cancel
      </button>
    </div>
  );
}

Provider Setup

// app/layout.tsx
import { SagaBusProvider } from "@saga-bus/nextjs/client";

export default function RootLayout({ children }) {
  return (
    <html>
      <body>
        <SagaBusProvider apiEndpoint="/api/saga">
          {children}
        </SagaBusProvider>
      </body>
    </html>
  );
}

Exports

Server (@saga-bus/nextjs/server)

  • createSagaBus(config) - Create saga bus instance
  • getSagaState(bus, sagaName, id) - Get saga state
  • withSagaBus(bus, handler) - Wrap API handler with context

API (@saga-bus/nextjs/api)

  • createSagaHandler(bus) - Create API route handler

Client (@saga-bus/nextjs/client)

  • SagaBusProvider - React context provider
  • useSagaBusConfig() - Access provider config
  • useSagaState(sagaName, id) - Fetch and interact with saga
  • usePublish() - Publish messages

API Actions

The API handler supports these actions:

| Action | Description | |--------|-------------| | publish | Publish a message | | getState | Get saga state by ID | | getStateByCorrelation | Get state by correlation ID |

Configuration

Server Config

| Option | Type | Default | Description | |--------|------|---------|-------------| | transport | Transport | required | Transport implementation | | store | SagaStore | required | Saga store implementation | | defaultEndpoint | string | "saga-bus" | Default publish endpoint |

Client Config

| Option | Type | Default | Description | |--------|------|---------|-------------| | apiEndpoint | string | "/api/saga" | API endpoint URL |

License

MIT