Update 2026-05-13 16:43:53

agent-core/nanobot/bus/__init__.py

@@ -0,0 +1,6 @@
+"""Message bus module for decoupled channel-agent communication."""
+
+from nanobot.bus.events import InboundMessage, OutboundMessage
+from nanobot.bus.queue import MessageBus
+
+__all__ = ["MessageBus", "InboundMessage", "OutboundMessage"]

agent-core/nanobot/bus/events.py

@@ -0,0 +1,38 @@
+"""Event types for the message bus."""
+
+from dataclasses import dataclass, field
+from datetime import datetime
+from typing import Any
+
+
+@dataclass
+class InboundMessage:
+    """Message received from a chat channel."""
+
+    channel: str  # telegram, discord, slack, whatsapp
+    sender_id: str  # User identifier
+    chat_id: str  # Chat/channel identifier
+    content: str  # Message text
+    timestamp: datetime = field(default_factory=datetime.now)
+    media: list[str] = field(default_factory=list)  # Media URLs
+    metadata: dict[str, Any] = field(default_factory=dict)  # Channel-specific data
+    session_key_override: str | None = None  # Optional override for thread-scoped sessions
+
+    @property
+    def session_key(self) -> str:
+        """Unique key for session identification."""
+        return self.session_key_override or f"{self.channel}:{self.chat_id}"
+
+
+@dataclass
+class OutboundMessage:
+    """Message to send to a chat channel."""
+
+    channel: str
+    chat_id: str
+    content: str
+    reply_to: str | None = None
+    media: list[str] = field(default_factory=list)
+    metadata: dict[str, Any] = field(default_factory=dict)
+
+

agent-core/nanobot/bus/queue.py

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+"""Async message queue for decoupled channel-agent communication."""
+
+import asyncio
+
+from nanobot.bus.events import InboundMessage, OutboundMessage
+
+
+class MessageBus:
+    """
+    Async message bus that decouples chat channels from the agent core.
+
+    Channels push messages to the inbound queue, and the agent processes
+    them and pushes responses to the outbound queue.
+    """
+
+    def __init__(self):
+        self.inbound: asyncio.Queue[InboundMessage] = asyncio.Queue()
+        self.outbound: asyncio.Queue[OutboundMessage] = asyncio.Queue()
+
+    async def publish_inbound(self, msg: InboundMessage) -> None:
+        """Publish a message from a channel to the agent."""
+        await self.inbound.put(msg)
+
+    async def consume_inbound(self) -> InboundMessage:
+        """Consume the next inbound message (blocks until available)."""
+        return await self.inbound.get()
+
+    async def publish_outbound(self, msg: OutboundMessage) -> None:
+        """Publish a response from the agent to channels."""
+        await self.outbound.put(msg)
+
+    async def consume_outbound(self) -> OutboundMessage:
+        """Consume the next outbound message (blocks until available)."""
+        return await self.outbound.get()
+
+    @property
+    def inbound_size(self) -> int:
+        """Number of pending inbound messages."""
+        return self.inbound.qsize()
+
+    @property
+    def outbound_size(self) -> int:
+        """Number of pending outbound messages."""
+        return self.outbound.qsize()