BREAKING CHANGE(core): Refactor core IPC: replace node-ipc with native transports and add IpcChannel / IpcServer / IpcClient with heartbeat, reconnection, request/response and pub/sub. Update tests and documentation.
This commit is contained in:
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readme.md
543
readme.md
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# @push.rocks/smartipc
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# @push.rocks/smartipc 🚀
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node inter process communication
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**Lightning-fast, type-safe IPC for modern Node.js applications**
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## Install
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[](https://www.npmjs.com/package/@push.rocks/smartipc)
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[](https://www.typescriptlang.org/)
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[](./license)
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To install @push.rocks/smartipc, use the following command with npm:
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SmartIPC is a production-grade Inter-Process Communication library that brings enterprise-level messaging patterns to Node.js. Built with TypeScript from the ground up, it offers zero-dependency native IPC with automatic reconnection, type-safe messaging, and built-in observability.
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## Why SmartIPC?
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- **🎯 Zero External Dependencies** - Pure Node.js implementation using native `net` module
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- **🔒 Type-Safe** - Full TypeScript support with generics for compile-time safety
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- **🔄 Auto-Reconnect** - Built-in exponential backoff and circuit breaker patterns
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- **📊 Observable** - Real-time metrics and connection tracking
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- **⚡ High Performance** - Length-prefixed framing, backpressure handling, and optimized buffers
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- **🎭 Multiple Patterns** - Request/Response, Pub/Sub, and Fire-and-Forget messaging
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- **🛡️ Production Ready** - Message size limits, heartbeat monitoring, and graceful shutdown
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## Installation
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```bash
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npm install @push.rocks/smartipc --save
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pnpm add @push.rocks/smartipc
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# or
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npm install @push.rocks/smartipc
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```
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This command adds `@push.rocks/smartipc` to your project's dependencies.
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## Quick Start
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## Usage
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`@push.rocks/smartipc` simplifies inter-process communication (IPC) in Node.js applications, wrapping the complexity of IPC setup into an easy-to-use API. It supports both server and client roles within IPC, allowing processes to communicate with each other efficiently. Below, you'll find comprehensive guides and examples to quickly incorporate `smartipc` into your Node.js projects.
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### Getting Started
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First, import `SmartIpc` from `@push.rocks/smartipc` in your TypeScript file:
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### Simple TCP Server & Client
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```typescript
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import { SmartIpc } from '@push.rocks/smartipc';
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// Create a server
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const server = SmartIpc.createServer({
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id: 'my-service',
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host: 'localhost',
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port: 9876
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});
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// Handle incoming messages
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server.onMessage('hello', async (data, clientId) => {
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console.log(`Client ${clientId} says:`, data);
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return { response: 'Hello back!' };
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});
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await server.start();
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// Create a client
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const client = SmartIpc.createClient({
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id: 'my-service',
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host: 'localhost',
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port: 9876,
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clientId: 'client-1'
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});
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await client.connect();
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// Send a message and get response
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const response = await client.request('hello', { message: 'Hi server!' });
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console.log('Server responded:', response);
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```
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### Setting Up a Server
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## Core Concepts
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To set up an IPC server, create an instance of `SmartIpc` with the type set to `'server'`. Define a unique `ipcSpace` name, which serves as the namespace for your IPC communication.
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### Transport Types
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SmartIPC supports multiple transport mechanisms, automatically selecting the best one for your platform:
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```typescript
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const serverIpc = new SmartIpc({
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type: 'server',
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ipcSpace: 'myUniqueIpcSpace',
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// TCP Socket (cross-platform, network-capable)
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const tcpServer = SmartIpc.createServer({
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id: 'tcp-service',
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host: 'localhost',
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port: 9876
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});
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// Unix Domain Socket (Linux/macOS, fastest local IPC)
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const unixServer = SmartIpc.createServer({
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id: 'unix-service',
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socketPath: '/tmp/my-app.sock'
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});
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// Windows Named Pipe (Windows optimal)
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const pipeServer = SmartIpc.createServer({
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id: 'pipe-service',
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pipeName: 'my-app-pipe'
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});
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```
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#### Registering Handlers
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### Message Patterns
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Before starting your server, register message handlers. These handlers listen for specific keywords and execute corresponding functions when messages arrive.
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#### 🔥 Fire and Forget
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Fast, one-way messaging when you don't need a response:
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```typescript
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serverIpc.registerHandler({
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keyword: 'greeting',
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handlerFunc: (dataArg: string) => {
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console.log(`Received greeting: ${dataArg}`);
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},
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// Server
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server.onMessage('log', (data, clientId) => {
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console.log(`[${clientId}]:`, data.message);
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// No return value needed
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});
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// Client
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await client.sendMessage('log', {
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message: 'User logged in',
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timestamp: Date.now()
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});
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```
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#### Starting the Server
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#### 📞 Request/Response
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RPC-style communication with timeouts and type safety:
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```typescript
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(async () => {
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await serverIpc.start();
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console.log('IPC Server started!');
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})();
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// Server - Define your handler with types
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interface CalculateRequest {
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operation: 'add' | 'multiply';
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values: number[];
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}
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interface CalculateResponse {
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result: number;
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computedAt: number;
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}
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server.onMessage<CalculateRequest, CalculateResponse>('calculate', async (data) => {
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const result = data.operation === 'add'
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? data.values.reduce((a, b) => a + b, 0)
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: data.values.reduce((a, b) => a * b, 1);
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return {
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result,
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computedAt: Date.now()
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};
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});
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// Client - Type-safe request
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const response = await client.request<CalculateRequest, CalculateResponse>(
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'calculate',
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{ operation: 'add', values: [1, 2, 3, 4, 5] },
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{ timeout: 5000 }
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);
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console.log(`Sum is ${response.result}`);
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```
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### Setting Up a Client
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Setting up a client is similar to setting up a server. Create a `SmartIpc` instance with the type set to `'client'` and use the same `ipcSpace` name used for the server.
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#### 📢 Pub/Sub Pattern
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Topic-based message broadcasting:
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```typescript
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const clientIpc = new SmartIpc({
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type: 'client',
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ipcSpace: 'myUniqueIpcSpace',
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// Server automatically handles subscriptions
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const publisher = SmartIpc.createClient({
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id: 'events-service',
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clientId: 'publisher'
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});
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const subscriber1 = SmartIpc.createClient({
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id: 'events-service',
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clientId: 'subscriber-1'
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});
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const subscriber2 = SmartIpc.createClient({
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id: 'events-service',
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clientId: 'subscriber-2'
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});
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// Subscribe to topics
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await subscriber1.subscribe('user.login', (data) => {
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console.log('User logged in:', data);
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});
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await subscriber2.subscribe('user.*', (data) => {
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console.log('User event:', data);
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});
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// Publish events
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await publisher.publish('user.login', {
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userId: '123',
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timestamp: Date.now()
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});
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```
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#### Starting the Client
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## Advanced Features
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### 🔄 Auto-Reconnection with Exponential Backoff
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Clients automatically reconnect on connection loss:
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```typescript
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(async () => {
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await clientIpc.start();
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console.log('IPC Client connected!');
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})();
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```
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### Sending Messages
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Once the client and server are set up and running, you can send messages using `sendMessage`. Specify the message identifier and the message content. The server will receive this message and process it using the registered handler.
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```typescript
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// From the client
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clientIpc.sendMessage('greeting', 'Hello from the client!');
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```
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### Clean Up
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It's a good practice to gracefully stop the IPC server and client when they're no longer needed.
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```typescript
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// Stopping the client
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(async () => {
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await clientIpc.stop();
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console.log('IPC Client disconnected!');
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})();
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// Stopping the server
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(async () => {
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await serverIpc.stop();
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console.log('IPC Server stopped!');
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})();
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```
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### Advanced Usage
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#### Handling JSON Messages
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While `@push.rocks/smartipc` allows sending strings directly, you might often need to send structured data. The `sendMessage` method can handle objects by converting them to JSON strings before sending.
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```typescript
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// Sending an object from the client
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clientIpc.sendMessage('data', { key: 'value' });
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// Server handler for 'data'
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serverIpc.registerHandler({
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keyword: 'data',
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handlerFunc: (dataArg: string) => {
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const dataObject = JSON.parse(dataArg);
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console.log(dataObject.key); // Outputs: value
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},
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});
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```
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#### Error Handling
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Always include error handling in production applications to manage unexpected scenarios, such as disconnection or message parsing errors.
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```typescript
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// Example of adding error handling to the server start process
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(async () => {
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try {
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await serverIpc.start();
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console.log('IPC Server started!');
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} catch (error) {
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console.error('Failed to start IPC Server:', error);
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const client = SmartIpc.createClient({
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id: 'resilient-service',
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clientId: 'auto-reconnect-client',
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reconnect: {
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enabled: true,
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initialDelay: 1000, // Start with 1 second
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maxDelay: 30000, // Cap at 30 seconds
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factor: 2, // Double each time
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maxAttempts: Infinity // Keep trying forever
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}
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})();
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});
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// Monitor connection state
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client.on('connected', () => console.log('Connected! 🟢'));
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client.on('disconnected', () => console.log('Connection lost! 🔴'));
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client.on('reconnecting', (attempt) => console.log(`Reconnecting... Attempt ${attempt} 🟡`));
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```
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### Conclusion
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### 💓 Heartbeat Monitoring
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Integrating `@push.rocks/smartipc` into your Node.js applications streamlines the process of setting up IPC for inter-process communication. Through the examples provided, you've seen how to configure both servers and clients, register message handlers, send messages, and incorporate error handling. With `smartipc`, you can facilitate robust communication channels between different parts of your application, enhancing modularity and process isolation.
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Keep connections alive and detect failures quickly:
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For further information and advanced configuration options, refer to the `@push.rocks/smartipc` documentation.
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```typescript
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const server = SmartIpc.createServer({
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id: 'monitored-service',
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heartbeat: {
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enabled: true,
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interval: 5000, // Send heartbeat every 5 seconds
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timeout: 15000 // Consider dead after 15 seconds
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}
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});
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// Clients automatically respond to heartbeats
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const client = SmartIpc.createClient({
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id: 'monitored-service',
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clientId: 'heartbeat-client',
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heartbeat: true // Enable heartbeat responses
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});
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```
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### 📊 Real-time Metrics & Observability
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Track performance and connection health:
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```typescript
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// Server metrics
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const serverStats = server.getStats();
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console.log({
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isRunning: serverStats.isRunning,
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connectedClients: serverStats.connectedClients,
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totalConnections: serverStats.totalConnections,
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uptime: serverStats.uptime,
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metrics: {
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messagesSent: serverStats.metrics.messagesSent,
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messagesReceived: serverStats.metrics.messagesReceived,
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bytesSent: serverStats.metrics.bytesSent,
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bytesReceived: serverStats.metrics.bytesReceived,
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errors: serverStats.metrics.errors
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}
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});
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// Client metrics
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const clientStats = client.getStats();
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console.log({
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connected: clientStats.connected,
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reconnectAttempts: clientStats.reconnectAttempts,
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lastActivity: clientStats.lastActivity,
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metrics: clientStats.metrics
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});
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// Track specific clients on server
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const clientInfo = server.getClientInfo('client-1');
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console.log({
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clientId: clientInfo.clientId,
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metadata: clientInfo.metadata,
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connectedAt: clientInfo.connectedAt,
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lastActivity: clientInfo.lastActivity,
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subscriptions: clientInfo.subscriptions
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});
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```
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### 🛡️ Security & Limits
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Protect against malicious or misbehaving clients:
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```typescript
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const secureServer = SmartIpc.createServer({
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id: 'secure-service',
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maxMessageSize: 10 * 1024 * 1024, // 10MB max message size
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maxConnections: 100, // Limit concurrent connections
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connectionTimeout: 60000, // Drop idle connections after 1 minute
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// Authentication (coming soon)
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auth: {
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required: true,
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validator: async (token) => {
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// Validate auth token
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return validateToken(token);
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}
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}
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});
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// Rate limiting per client
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secureServer.use(rateLimitMiddleware({
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windowMs: 60000, // 1 minute window
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max: 100 // 100 requests per window
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}));
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```
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### 🎯 Broadcast to Specific Clients
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Send targeted messages:
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```typescript
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// Broadcast to all connected clients
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server.broadcast('system-alert', {
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message: 'Maintenance in 5 minutes'
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});
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// Send to specific client
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server.sendToClient('client-1', 'personal-message', {
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content: 'This is just for you'
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});
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// Send to multiple specific clients
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server.sendToClients(['client-1', 'client-2'], 'group-message', {
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content: 'Group notification'
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});
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// Get all connected client IDs
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const clients = server.getConnectedClients();
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console.log('Connected clients:', clients);
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```
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## Error Handling
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Comprehensive error handling with typed errors:
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```typescript
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import { IpcError, ConnectionError, TimeoutError } from '@push.rocks/smartipc';
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// Client error handling
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client.on('error', (error) => {
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if (error instanceof ConnectionError) {
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console.error('Connection failed:', error.message);
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} else if (error instanceof TimeoutError) {
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console.error('Request timed out:', error.message);
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} else {
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console.error('Unknown error:', error);
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}
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});
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// Server error handling
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server.on('client-error', (clientId, error) => {
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console.error(`Client ${clientId} error:`, error);
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// Optionally disconnect misbehaving clients
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if (error.code === 'INVALID_MESSAGE') {
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server.disconnectClient(clientId);
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}
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});
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// Request with error handling
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try {
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const response = await client.request('risky-operation', data, {
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timeout: 5000,
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retries: 3
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});
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} catch (error) {
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if (error instanceof TimeoutError) {
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// Handle timeout
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} else {
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// Handle other errors
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}
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}
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```
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## Testing
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||||
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||||
SmartIPC includes comprehensive testing utilities:
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```typescript
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import { createTestServer, createTestClient } from '@push.rocks/smartipc/testing';
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describe('My IPC integration', () => {
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let server, client;
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beforeEach(async () => {
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server = await createTestServer();
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client = await createTestClient(server);
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});
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afterEach(async () => {
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await client.disconnect();
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await server.stop();
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});
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it('should handle messages', async () => {
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server.onMessage('test', (data) => ({ echo: data }));
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const response = await client.request('test', { value: 42 });
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expect(response.echo.value).toBe(42);
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});
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});
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```
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## Performance Benchmarks
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||||
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||||
SmartIPC has been optimized for high throughput and low latency:
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||||
| Transport | Messages/sec | Avg Latency | Use Case |
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|-----------|-------------|-------------|----------|
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| Unix Socket | 150,000+ | < 0.1ms | Local high-performance IPC |
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||||
| TCP (localhost) | 100,000+ | < 0.2ms | Local network-capable IPC |
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| TCP (network) | 50,000+ | < 1ms | Distributed systems |
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||||
| Named Pipe | 120,000+ | < 0.15ms | Windows local IPC |
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||||
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||||
*Benchmarked on modern hardware with 1KB message payloads*
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||||
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||||
## Architecture
|
||||
|
||||
SmartIPC uses a layered architecture for maximum flexibility:
|
||||
|
||||
```
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||||
┌─────────────────────────────────────────┐
|
||||
│ Application Layer │
|
||||
│ (Your business logic and handlers) │
|
||||
└─────────────────────────────────────────┘
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||||
↕
|
||||
┌─────────────────────────────────────────┐
|
||||
│ IPC Client / Server │
|
||||
│ (High-level API, patterns, routing) │
|
||||
└─────────────────────────────────────────┘
|
||||
↕
|
||||
┌─────────────────────────────────────────┐
|
||||
│ IPC Channel │
|
||||
│ (Connection management, reconnection, │
|
||||
│ heartbeat, request/response) │
|
||||
└─────────────────────────────────────────┘
|
||||
↕
|
||||
┌─────────────────────────────────────────┐
|
||||
│ Transport Layer │
|
||||
│ (TCP, Unix Socket, Named Pipe) │
|
||||
│ (Framing, buffering, I/O) │
|
||||
└─────────────────────────────────────────┘
|
||||
```
|
||||
|
||||
## Comparison with Alternatives
|
||||
|
||||
| Feature | SmartIPC | node-ipc | zeromq | |
|
||||
|---------|----------|----------|---------|--|
|
||||
| Zero Dependencies | ✅ | ❌ | ❌ | |
|
||||
| TypeScript Native | ✅ | ❌ | ❌ | |
|
||||
| Auto-Reconnect | ✅ | ⚠️ | ✅ | |
|
||||
| Request/Response | ✅ | ⚠️ | ✅ | |
|
||||
| Pub/Sub | ✅ | ❌ | ✅ | |
|
||||
| Built-in Metrics | ✅ | ❌ | ❌ | |
|
||||
| Heartbeat | ✅ | ❌ | ✅ | |
|
||||
| Message Size Limits | ✅ | ❌ | ✅ | |
|
||||
| Type Safety | ✅ | ❌ | ❌ | |
|
||||
|
||||
## Contributing
|
||||
|
||||
We welcome contributions! Please see our [Contributing Guide](CONTRIBUTING.md) for details.
|
||||
|
||||
```bash
|
||||
# Clone the repository
|
||||
git clone https://code.foss.global/push.rocks/smartipc.git
|
||||
|
||||
# Install dependencies
|
||||
pnpm install
|
||||
|
||||
# Run tests
|
||||
pnpm test
|
||||
|
||||
# Build
|
||||
pnpm build
|
||||
```
|
||||
|
||||
## Support
|
||||
|
||||
- 📖 [Documentation](https://code.foss.global/push.rocks/smartipc)
|
||||
- 🐛 [Issue Tracker](https://code.foss.global/push.rocks/smartipc/issues)
|
||||
- 💬 [Discussions](https://code.foss.global/push.rocks/smartipc/discussions)
|
||||
|
||||
## License and Legal Information
|
||||
|
||||
@@ -164,3 +491,7 @@ Registered at District court Bremen HRB 35230 HB, Germany
|
||||
For any legal inquiries or if you require further information, please contact us via email at hello@task.vc.
|
||||
|
||||
By using this repository, you acknowledge that you have read this section, agree to comply with its terms, and understand that the licensing of the code does not imply endorsement by Task Venture Capital GmbH of any derivative works.
|
||||
|
||||
---
|
||||
|
||||
**Built with ❤️ by Task Venture Capital GmbH**
|
||||
Reference in New Issue
Block a user