@computesdk/events

Events SDK for ComputeSDK - store, retrieve, and subscribe to sandbox events in real-time.

Features

• HTTP Client - Store and retrieve events via REST API
• Pub/Sub Client - Real-time event streaming via TCP (Node.js)
• Auto-reconnect - Automatic reconnection with configurable delays
• Type-safe - Full TypeScript support

Installation

npm install @computesdk/events

Quick Start

Storing Events (from inside a sandbox)

Use the HTTP client to store events from your sandbox code:

import { createEventsClient } from '@computesdk/events';

const client = createEventsClient({
  accessToken: process.env.COMPUTESDK_ACCESS_TOKEN,
});

// Store an event
const result = await client.storeEvent({
  type: 'execution.completed',
  data: {
    exitCode: 0,
    duration: 1234,
    output: 'Hello, World!',
  },
});

console.log('Event stored:', result.eventId);

Retrieving Events (from your application)

Use your API key to retrieve historical events:

import { createEventsClient } from '@computesdk/events';

const client = createEventsClient({
  apiKey: process.env.COMPUTESDK_API_KEY,
});

// Get all events for a sandbox
const events = await client.getEvents('sandbox-123');

// Filter by type
const execEvents = await client.getEvents('sandbox-123', {
  type: 'execution.completed',
});

// Get events since a timestamp
const recentEvents = await client.getEvents('sandbox-123', {
  since: Date.now() - 3600000, // Last hour
  limit: 50,
});

for (const event of events) {
  console.log(`[${event.type}] ${JSON.stringify(event.data)}`);
}

Real-time Streaming (Node.js)

Subscribe to events in real-time using the Pub/Sub client:

import { createPubSubClient } from '@computesdk/events';

const pubsub = createPubSubClient({
  accessToken: process.env.COMPUTESDK_ACCESS_TOKEN,
  sandboxId: 'sandbox-123',
});

// Listen for events
pubsub.on('event', (event) => {
  console.log(`Received: ${event.type}`, event.data);
});

pubsub.on('connect', () => {
  console.log('Connected to event stream');
});

pubsub.on('disconnect', () => {
  console.log('Disconnected (will auto-reconnect)');
});

pubsub.on('error', (error) => {
  console.error('Connection error:', error);
});

// Connect and start receiving events
await pubsub.connect();

// Keep connection alive with periodic pings
setInterval(() => pubsub.ping(), 30000);

// Disconnect when done
await pubsub.disconnect();

API Reference

EventsClient

HTTP client for storing and retrieving events.

Constructor Options

interface EventsClientConfig {
  /** Gateway base URL (default: "https://events.computesdk.com") */
  gatewayUrl?: string;
  /** ComputeSDK API key (for retrieving events) */
  apiKey?: string;
  /** JWT access token (for storing events from sandbox) */
  accessToken?: string;
  /** Request timeout in milliseconds (default: 30000) */
  timeout?: number;
}

Methods

storeEvent(options) - Store an event (requires access token)

const result = await client.storeEvent({
  type: 'custom.event',
  data: { key: 'value' },
});
// Returns: { eventId, sandboxId, type, timestamp }

getEvents(sandboxId, options?) - Retrieve events (requires API key)

const events = await client.getEvents('sandbox-123', {
  type: 'execution.completed', // Filter by type
  since: Date.now() - 3600000, // Events after timestamp (ms)
  limit: 100,                   // Max events (1-1000)
});

setApiKey(apiKey) - Update the API key

setAccessToken(token) - Update the access token

EventsPubSubClient

TCP client for real-time event streaming (Node.js only).

Constructor Options

interface PubSubClientConfig {
  /** Gateway host (default: "events.computesdk.com") */
  host?: string;
  /** Pub/Sub port (default: 6380) */
  port?: number;
  /** JWT access token for authentication */
  accessToken: string;
  /** Sandbox ID to subscribe to */
  sandboxId: string;
  /** Reconnect on disconnect (default: true) */
  autoReconnect?: boolean;
  /** Reconnect delay in milliseconds (default: 1000) */
  reconnectDelay?: number;
}

Methods

connect() - Connect and subscribe to events

disconnect() - Disconnect from the server

getState() - Get connection state

Returns: 'disconnected' | 'connecting' | 'connected' | 'error'

ping() - Send a keepalive ping

Events

pubsub.on('event', (event: SandboxEvent) => { ... });
pubsub.on('connect', () => { ... });
pubsub.on('disconnect', () => { ... });
pubsub.on('error', (error: Error) => { ... });

Types

SandboxEvent

interface SandboxEvent {
  id: string;
  sandboxId: string;
  workspaceId: number;
  type: string;
  data: Record<string, unknown>;
  timestamp: number; // Unix timestamp in milliseconds
}

Error Handling

The package exports specific error classes:

import {
  EventsError,        // Base error class
  EventsAuthError,    // Authentication failures
  EventsNetworkError, // Network/timeout errors
  EventsPubSubError,  // Pub/Sub specific errors
} from '@computesdk/events';

try {
  await client.getEvents('sandbox-123');
} catch (error) {
  if (error instanceof EventsAuthError) {
    console.error('Check your API key');
  } else if (error instanceof EventsNetworkError) {
    console.error('Network issue:', error.message);
  }
}

Environment Variables

The client automatically reads these environment variables:

| Variable | Description | |----------|-------------| | COMPUTESDK_API_KEY | API key for retrieving events | | COMPUTESDK_ACCESS_TOKEN | Access token for storing events | | COMPUTESDK_GATEWAY_URL | Custom gateway URL | | COMPUTESDK_PUBSUB_HOST | Custom pub/sub host | | COMPUTESDK_PUBSUB_PORT | Custom pub/sub port |

License

MIT