Python SDK

# pip
pip install nolag

# poetry
poetry add nolag

# uv
uv add nolag

import asyncio
from nolag import NoLag

async def main():
    # Create client with your actor token
    client = NoLag("your-actor-token")

    # Connect to NoLag
    await client.connect()

    # Subscribe to a topic
    def on_message(data, meta):
        print(f"Received: {data}")

    await client.subscribe("my-topic", on_message)

    # Publish a message
    await client.emit("my-topic", {"hello": "world"})

    # Keep running
    await asyncio.sleep(60)

    # Disconnect when done
    await client.disconnect()

asyncio.run(main())

from nolag import NoLag, NoLagOptions, QoS

options = NoLagOptions(
    url="wss://broker.nolag.app/ws",  # Custom broker URL
    reconnect=True,                     # Auto-reconnect on disconnect
    reconnect_interval=5.0,             # Seconds between reconnect attempts
    max_reconnect_attempts=10,          # Max reconnect attempts (0 = infinite)
    heartbeat_interval=30.0,            # Heartbeat interval (0 to disable)
    qos=QoS.AT_LEAST_ONCE,              # Default QoS level
    debug=True,                         # Enable debug logging
)

client = NoLag("your-actor-token", options)

from nolag import SubscribeOptions, QoS

# Basic subscription
await client.subscribe("chat/messages", lambda data, meta: print(data))

# With options
options = SubscribeOptions(
    qos=QoS.EXACTLY_ONCE,
    load_balance=True,
    load_balance_group="workers"
)
await client.subscribe("tasks", handler, options)

# Unsubscribe
await client.unsubscribe("chat/messages")

from nolag import EmitOptions, QoS

# Publish any data (dict, list, string, bytes, etc.)
await client.emit("chat/messages", {"text": "Hello!"})

# With options
options = EmitOptions(
    qos=QoS.EXACTLY_ONCE,
    retain=True  # Retain last message for new subscribers
)
await client.emit("status", {"online": True}, options)

from nolag import ConnectionStatus

# Listen for connection events
client.on("connected", lambda: print("Connected!"))
client.on("disconnected", lambda: print("Disconnected"))
client.on("reconnecting", lambda attempt: print(f"Reconnecting... attempt {attempt}"))
client.on("error", lambda err: print(f"Error: {err}"))

# Check connection status
if client.status == ConnectionStatus.CONNECTED:
    print("We're connected!")

# Set your presence data
await client.set_presence({"status": "online", "typing": False})

# Get presence of all actors in a topic
presence_list = await client.get_presence("chat/room-1")
for actor in presence_list:
    print(f"{actor.actor_token_id}: {actor.presence}")

# Listen for presence changes
client.on("presence", lambda topic, presence:
    print(f"Presence update in {topic}: {presence}")
)

import asyncio
from nolag import NoLag

async def main():
    client = NoLag("your-actor-token")

    try:
        await client.connect()
    except Exception as e:
        print(f"Connection failed: {e}")
        return

    # Handle errors during operation
    client.on("error", lambda err: print(f"Error: {err}"))

    try:
        await client.emit("topic", {"data": "value"})
    except Exception as e:
        print(f"Emit failed: {e}")

asyncio.run(main())

from nolag import NoLagApi, AppCreate, RoomCreate, ActorCreate

async def main():
    # Create API client with project-scoped API key
    async with NoLagApi("nlg_live_xxx.secret") as api:
        # List all apps in your project
        apps = await api.apps.list()
        print(f"Found {len(apps.data)} apps")

        # Create a new app
        app = await api.apps.create(AppCreate(
            name="my-chat-app",
            description="A real-time chat application"
        ))

        # Create a room in the app
        room = await api.rooms.create(app.app_id, RoomCreate(
            name="general",
            slug="general"
        ))

        # Create an actor (save the access token!)
        actor = await api.actors.create(ActorCreate(
            name="web-client",
            actor_type="device"
        ))
        print(f"Actor token: {actor.access_token}")

# Enable load balancing for a subscription
await client.subscribe(
    "tasks",
    process_task,
    SubscribeOptions(
        load_balance=True,
        load_balance_group="task-workers"
    )
)

from nolag import (
    # WebSocket Client
    NoLag,              # Main client class
    NoLagOptions,       # Connection options
    SubscribeOptions,   # Subscription options
    EmitOptions,        # Publish options
    ConnectionStatus,   # Connection status enum
    ActorType,          # Actor type enum
    QoS,                # QoS level enum
    MessageMeta,        # Message metadata
    ActorPresence,      # Presence info

    # REST API Client
    NoLagApi,           # REST API client
    NoLagApiError,      # API error class
    App, AppCreate, AppUpdate,
    Room, RoomCreate, RoomUpdate,
    Actor, ActorWithToken, ActorCreate, ActorUpdate,
)