Orra SDK for JavaScript

JavaScript SDK for Orra - Build reliable multi-agent applications that handle complex real-world interactions.

Installation

npm install -S @orra.dev/sdk

Usage

import { initService } from '@orra.dev/sdk';

// Initialize the SDK
const echoToolSvc = initService({
	name: 'echo',
	orraUrl: process.env.ORRA_URL,
	orraKey: process.env.ORRA_API_KEY
});

// Register your service
await echoToolSvc.register({
	description: 'A simple echo provider that echoes whatever its sent',
	schema: {
		input: {
			type: 'object',
			properties: {
				message: { type: 'string' }
			},
			required: [ 'message' ]
		},
		output: {
			type: 'object',
			properties: {
				response: { type: 'string' }
			}
		}
	}
});

// Define your service handler
echoToolSvc.start(async (task) => {
	try {
		const { message } = task.input;
		return { response: `Echo: ${message}` };
	} catch (error) {
		throw error;
	}
});

// Handle graceful shutdown
process.on('SIGINT', async () => {
	console.log('Shutting down...');
	echoToolSvc.shutdown();
	process.exit(0);
});

Advanced Features

Revertible Services with Compensations

// Register as revertible
await inventoryService.register({
	description: 'An inventory service with compensation support',
	revertible: true,
	schema: {
		// Schema definition
	}
});

// Compensation handler with context
inventoryService.onRevert(async (originalTask, taskResult, context) => {
	console.log(`Reverting task ${originalTask.id}`);
	
	// Access compensation context
	if (context) {
		console.log(`Compensation reason: ${context.reason}`);
		console.log(`Orchestration ID: ${context.orchestrationId}`);
		
		// For aborted tasks, access the abort payload
		if (context.reason === 'ABORTED' && context.payload) {
			console.log(`Abort reason: ${context.payload.reason}`);
		}
	}
	
	// Perform compensation logic
	await releaseReservation(taskResult.reservationId);
});

The compensation handler receives a third parameter context that provides information about why the compensation was triggered:

• reason: Why compensation was triggered (e.g., 'aborted', 'failed')
• orchestrationId: The ID of the parent orchestration
• payload: Additional data related to the compensation (optional)
• timestamp: When the compensation was initiated

Aborting Tasks

The SDK allows you to abort task processing when needed, instead of completing the task normally:

// Handler with abort capability
service.start(async (task) => {
	try {
		// Check condition that might require abort
		const inventory = await checkInventory(task.input.productId);
		
		if (inventory.available < task.input.quantity) {
			// Abort with detailed payload - will stop execution
			return task.abort({
				reason: "INSUFFICIENT_INVENTORY",
				available: inventory.available,
				requested: task.input.quantity
			});
		}
		
		// Normal processing continues if not aborted
		const reservationId = await createReservation(task.input);
		return { success: true, reservationId };
	} catch (error) {
		throw error;
	}
});

When a task is aborted, the orchestration will receive an abort message with your payload, and task processing will stop immediately. In revertible services, the abort information will be available during compensation.

Progress Updates for Long-Running Tasks

// Handler with progress updates
service.start(async (task) => {
  try {
    // Begin processing
    await task.pushUpdate({
      progress: 25,
      status: "processing",
      message: "Starting data processing"
    });
    
    // Run time-consuming operation
    await processFirstBatch();
    
    // Report halfway progress
    await task.pushUpdate({
      progress: 50,
      status: "processing",
      message: "Halfway complete"
    });
    
    // Complete the processing
    await processSecondBatch();
    
    // Final progress update
    await task.pushUpdate({
      progress: 100,
      message: "Processing complete"
    });
    
    return { success: true, data: "Task completed successfully" };
  } catch (error) {
    throw error;
  }
});

Progess updates allow you to send interim results to provide visibility into long-running tasks. View these updates using the CLI:

# View summarized updates (first/last)
orra inspect -d <orchestration-id> --updates

# View all detailed updates
orra inspect -d <orchestration-id> --long-updates

Custom Persistence

const toolSvc = initService({
	name: 'my-tools-as-service',
	orraUrl: process.env.ORRA_URL,
	orraKey: process.env.ORRA_API_KEY,
	persistenceOpts: {
		// Custom file path
		method: 'file',
		filePath: './custom/path/service-key.json',
		
		// Or custom persistence implementation
		method: 'custom',
		customSave: async (id) => {
			await db.services.save(id);
		},
		customLoad: async () => {
			return await db.services.load();
		}
	}
});

Documentation

For more detailed documentation, please visit Orra JS SDK Documentation.