aethermagic 0.1.16

AetherMagic - Multi-protocol communications between microservices (MQTT, Redis, HTTP/WebSocket, ZeroMQ)

AetherMagic - Multi-Protocol Microservices Communication

AetherMagic is a powerful multi-protocol communication library for microservices, providing a unified API for different transport mechanisms including MQTT, Redis, HTTP/WebSocket, and ZeroMQ.

Supported Protocols

1. MQTT (original) - Best for Task Distribution

• Lightweight protocol for IoT and microservices
• Shared subscriptions for automatic load balancing
• Built-in task distribution among multiple workers
• SSL/TLS encryption

2. Redis Pub/Sub + Streams

• Pub/Sub: Fast in-memory message delivery
• Streams: Reliable delivery with load-balanced consumer groups
• High performance, atomic operations

3. WebSocket

• Real-time bidirectional communication
• Built-in load balancing with random client selection
• Web interface compatibility

4. ZeroMQ

• High-performance messaging with natural load balancing
• PUSH/PULL pattern for automatic task distribution
• Brokerless architecture

Installation

pip install aethermagic

# For all protocols install additional dependencies:
pip install redis aiohttp websockets pyzmq

Usage

Quick Start with Different Protocols

import asyncio
from aethermagic import AetherMagic, ProtocolType, AetherTask

# MQTT (original)
aether_mqtt = AetherMagic(
    protocol_type=ProtocolType.MQTT,
    host='localhost',
    port=1883
)

# Redis Pub/Sub
aether_redis = AetherMagic(
    protocol_type=ProtocolType.REDIS,
    host='localhost',
    port=6379
)

# Redis Streams (with reliable delivery)
aether_streams = AetherMagic(
    protocol_type=ProtocolType.REDIS,
    host='localhost',
    port=6379,
    use_streams=True,
    consumer_group='workers'
)

# HTTP/WebSocket
aether_http = AetherMagic(
    protocol_type=ProtocolType.HTTP,
    host='localhost',
    port=8080,
    mode='client'  # or 'server'
)

# ZeroMQ
aether_zmq = AetherMagic(
    protocol_type=ProtocolType.ZEROMQ,
    host='localhost',
    port=5555,
    pattern='pubsub'  # or 'pushpull', 'reqrep'
)

Creating a Worker

async def handle_task(ae_task, data):
    print(f"Processing: {data}")
    
    # Send intermediate status
    await ae_task.status(50)
    
    # Simulate work
    await asyncio.sleep(2)
    
    # Complete task
    await ae_task.complete(True, {"result": "success"})

# Create task
task = AetherTask(
    job='my_service',
    task='process_data', 
    context='production',
    on_perform=handle_task
)

# Register worker
await task.idle()

# Start main loop
await aether.main()

Sending Tasks from Client

async def on_status(ae_task, complete, succeed, progress, data):
    if complete:
        print(f"Task finished: {succeed}")
    else:
        print(f"Progress: {progress}%")

async def on_complete(ae_task, succeed, data):
    print(f"Result: {data}")

# Create client task
client_task = AetherTask(
    job='my_service',
    task='process_data',
    context='production',
    on_status=on_status,
    on_complete=on_complete
)

# Send task
await client_task.perform({
    "input_file": "/path/to/data.csv",
    "options": {"format": "json"}
})

Task Distribution & Load Balancing

AetherMagic automatically distributes tasks among multiple workers for all protocols:

MQTT with Shared Subscriptions

# Multiple workers subscribe to shared topic
# $share/union_job_workgroup/union/job/task/context/+/perform
await aether.listen('image-process', 'resize', 'batch1', 'perform', 'workers', handle_task)

Redis with Consumer Groups

# Atomic LPUSH/BRPOP operations ensure single delivery
await aether.listen('image-process', 'resize', 'batch1', 'perform', 'workers', handle_task)

WebSocket with Random Selection

# Tasks distributed randomly among connected clients
await aether.listen('image-process', 'resize', 'batch1', 'perform', 'workers', handle_task)  

ZeroMQ PUSH/PULL Pattern

# Natural load balancing with PUSH/PULL sockets
await aether.listen('image-process', 'resize', 'batch1', 'perform', 'workers', handle_task)

Key Benefits:

• 🔄 Automatic load balancing - tasks distributed among available workers
• 🚫 No duplicate processing - each task handled by exactly one worker
• 📈 Horizontal scaling - add more workers to increase capacity
• 🛡️ Fault tolerance - failed workers don't block other workers

See TASK_DISTRIBUTION.md for detailed examples.

Protocol Selection Guide

MQTT

Use when:

• Need IoT device compatibility
• Require lightweight protocol
• Have bandwidth constraints

Redis Pub/Sub

Use when:

• Need maximum speed
• Already have Redis in infrastructure
• Message loss on failures is acceptable

Redis Streams

Use when:

• Need reliable message delivery
• Require load balancing between workers
• Message persistence is important

HTTP/WebSocket

Use when:

• Need web application integration
• Require HTTP proxy/load balancer compatibility
• Need REST API for external systems

ZeroMQ

Use when:

• Maximum performance is critical
• Don't want external broker dependencies
• Need specific communication patterns

Examples

See examples.py for complete usage examples of each protocol:

# Run Redis example
python examples.py redis

# Run HTTP/WebSocket example  
python examples.py http

# Run ZeroMQ example
python examples.py zeromq

# Multi-protocol example
python examples.py multi

Configuration

Common Parameters

config = ConnectionConfig(
    protocol_type=ProtocolType.REDIS,
    host='localhost',
    port=6379,
    ssl=False,
    username='user',
    password='pass',
    union='my_app',  # namespace for application
    timeout=30,
    keepalive=60
)

Protocol-Specific Parameters

Redis Streams

aether = AetherMagic(
    protocol_type=ProtocolType.REDIS,
    use_streams=True,
    consumer_group='workers',
    consumer_name='worker_1'
)

HTTP/WebSocket

aether = AetherMagic(
    protocol_type=ProtocolType.HTTP,
    mode='server',  # or 'client'
    ssl=True
)

ZeroMQ

aether = AetherMagic(
    protocol_type=ProtocolType.ZEROMQ,
    pattern='pushpull',  # 'pubsub', 'reqrep', 'all'
    server_mode=True
)

Performance Comparison

Protocol	Throughput	Latency	Reliability	Complexity
MQTT	Medium	Low	High	Low
Redis Pub/Sub	High	Very Low	Medium	Low
Redis Streams	High	Low	High	Medium
HTTP/WebSocket	Medium	Medium	High	Medium
ZeroMQ	Very High	Very Low	Medium	High

Backward Compatibility

Existing MQTT code continues to work without changes:

# Old code
from aethermagic import AetherMagic

aether = AetherMagic(server="localhost", port=1883)

The new API is fully compatible and adds additional capabilities.

Load Balancing Support

AetherMagic now supports load-balanced task distribution to ensure each task is processed by only one worker:

Protocol-Specific Load Balancing

Redis Protocol

• RedisLoadBalancedProtocol: Uses Redis lists (LPUSH/BRPOP) for atomic task distribution
• Each task goes to exactly one available worker
• FIFO processing with blocking pop operations

from aethermagic.protocols.redis_protocol import RedisLoadBalancedProtocol

worker = RedisLoadBalancedProtocol(config, consumer_id="worker_1")
await worker.subscribe_to_tasks("job", "task", "context", callback)

MQTT Protocol

• Uses shared subscriptions with $share prefix
• Broker distributes messages among group subscribers
• Built-in load balancing at protocol level

ZeroMQ Protocol

• Uses PUSH/PULL socket pattern for task distribution
• Round-robin delivery to connected workers
• No message duplication - perfect for task distribution

WebSocket Protocol

• Implements random selection among subscribed clients
• Tasks with 'shared:' or 'tasks:' prefixes are load balanced
• Single delivery guaranteed per task

Multi-Protocol Load Balancing API

Use the new convenience methods for load-balanced task processing:

from aethermagic import AetherMagic, ProtocolType

# Create workers  
worker = AetherMagic(protocol_type=ProtocolType.REDIS, host="localhost", port=6379)
await worker.connect()

# Add load-balanced task handler
await worker.add_task(
    job="processing",
    task="compute", 
    context="demo",
    callback=task_handler,
    shared=True  # Enable load balancing
)

# Publish load-balanced tasks
await worker.perform_task(
    job="processing",
    task="compute",
    context="demo", 
    data={"work": "data"},
    shared=True  # Only one worker will receive this
)

Single Delivery Guarantees

• Redis: Atomic LPUSH/BRPOP operations ensure single delivery
• MQTT: Broker's shared subscription handles distribution
• ZeroMQ: PUSH/PULL pattern is inherently load-balanced
• WebSocket: Random selection with connection tracking

All protocols now support the shared=True parameter for load-balanced task distribution.

See load_balanced_demo.py for complete working examples.