File size: 8,810 Bytes
9abace2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 | """
Stdio Bridge Server
Part of SOVEREIGN PYTHON LLM ENGINE
Stdio-based bridge for C frontend communication.
Uses JSON-RPC 2.0 over stdin/stdout.
"""
import sys
import asyncio
import json
from typing import Any
from datetime import datetime
from ..agents.react import ReActAgent, ReActConfig
from ..tools.registry import ToolRegistry
from ..tools.approval import ApprovalEngine
from ..core.evidence import WORMLedger
from ..core.crypto import generate_signing_key
from ..runtime.providers.multi import MultiProvider
from ..models.entities import Task, Message, MessageRole
from pathlib import Path
class StdioBridge:
"""
Stdio bridge server.
Protocol:
- C frontend writes JSON-RPC requests to our stdin
- We write JSON-RPC responses to stdout
- All messages are newline-delimited JSON
"""
def __init__(self):
# Initialize components
signing_key = generate_signing_key()
self.ledger = WORMLedger(Path("bridge_evidence.worm"), signing_key)
self.registry = ToolRegistry()
self.approval = ApprovalEngine(self.ledger)
self.model = MultiProvider() # OpenRouter → Ollama fallback
# Initialize agent
config = ReActConfig(max_steps=15, log_to_worm=True)
self.agent = ReActAgent(
self.model,
self.registry,
self.approval,
self.ledger,
config
)
# Request handlers
self.handlers = {
"agent.run": self._handle_agent_run,
"agent.stream": self._handle_agent_stream,
"tool.execute": self._handle_tool_execute,
"tool.list": self._handle_tool_list,
"chat.message": self._handle_chat_message,
"health": self._handle_health,
}
async def run(self):
"""Run stdio bridge server"""
# Log startup
await self.ledger.append({
"event": "bridge_startup",
"timestamp": datetime.utcnow().isoformat()
})
# Write ready signal
self._write_response({
"jsonrpc": "2.0",
"method": "bridge.ready",
"params": {
"version": "1.0.0",
"capabilities": ["agent.run", "agent.stream", "tool.execute", "chat.message"]
}
})
# Read loop
while True:
try:
# Read line from stdin
line = await asyncio.get_event_loop().run_in_executor(
None,
sys.stdin.readline
)
if not line:
break # EOF
line = line.strip()
if not line:
continue
# Parse request
request = json.loads(line)
# Handle request
response = await self._handle_request(request)
# Write response
if response:
self._write_response(response)
except KeyboardInterrupt:
break
except Exception as e:
# Write error response
self._write_response({
"jsonrpc": "2.0",
"error": {
"code": -32603,
"message": "Internal error",
"data": str(e)
},
"id": None
})
# Log shutdown
await self.ledger.append({
"event": "bridge_shutdown",
"timestamp": datetime.utcnow().isoformat()
})
async def _handle_request(self, request: dict) -> dict | None:
"""Handle JSON-RPC request"""
# Validate
if request.get("jsonrpc") != "2.0":
return {
"jsonrpc": "2.0",
"error": {
"code": -32600,
"message": "Invalid Request"
},
"id": request.get("id")
}
method = request.get("method")
if not method:
return {
"jsonrpc": "2.0",
"error": {
"code": -32600,
"message": "Method required"
},
"id": request.get("id")
}
params = request.get("params", {})
request_id = request.get("id")
# Find handler
handler = self.handlers.get(method)
if not handler:
return {
"jsonrpc": "2.0",
"error": {
"code": -32601,
"message": f"Method not found: {method}"
},
"id": request_id
}
# Execute
try:
result = await handler(params)
# Don't send response for notifications
if request_id is None:
return None
return {
"jsonrpc": "2.0",
"result": result,
"id": request_id
}
except Exception as e:
return {
"jsonrpc": "2.0",
"error": {
"code": -32000,
"message": "Handler error",
"data": str(e)
},
"id": request_id
}
async def _handle_agent_run(self, params: dict) -> dict:
"""Handle agent.run request"""
task_description = params.get("task")
if not task_description:
raise ValueError("task parameter required")
# Create task
task = Task(
task_id=f"bridge-{datetime.utcnow().timestamp()}",
description=task_description
)
# Run agent
result = await self.agent.run(task)
return {
"result": result,
"task_id": task.task_id
}
async def _handle_agent_stream(self, params: dict) -> dict:
"""Handle agent.stream request"""
# Streaming would require SSE or WebSocket
# For now, fall back to non-streaming
return await self._handle_agent_run(params)
async def _handle_tool_execute(self, params: dict) -> dict:
"""Handle tool.execute request"""
tool_name = params.get("tool")
tool_args = params.get("args", {})
if not tool_name:
raise ValueError("tool parameter required")
# Get tool
tool = self.registry.get(tool_name)
if not tool:
raise ValueError(f"Tool not found: {tool_name}")
# Execute
result = await tool.handler(**tool_args)
return {
"tool": tool_name,
"result": str(result)
}
async def _handle_tool_list(self, params: dict) -> dict:
"""Handle tool.list request"""
tools = self.registry.list_all()
return {
"tools": [
{
"id": tool.tool_id,
"description": tool.description,
"risk_class": tool.risk_class.value
}
for tool in tools[:50] # Limit to 50
]
}
async def _handle_chat_message(self, params: dict) -> dict:
"""Handle chat.message request"""
message_text = params.get("message")
if not message_text:
raise ValueError("message parameter required")
# Generate response using model
messages = [
{
"role": "user",
"content": message_text
}
]
response = await self.model.invoke_model(
model_id="anthropic.claude-3-5-sonnet-20241022-v2:0",
messages=messages,
max_tokens=2048
)
# Extract text
reply = response["content"][0]["text"]
return {
"reply": reply
}
async def _handle_health(self, params: dict) -> dict:
"""Handle health check"""
return {
"status": "ok",
"timestamp": datetime.utcnow().isoformat()
}
def _write_response(self, response: dict) -> None:
"""Write JSON response to stdout"""
json_str = json.dumps(response)
sys.stdout.write(json_str + "\n")
sys.stdout.flush()
def main():
"""Entry point for stdio bridge"""
bridge = StdioBridge()
asyncio.run(bridge.run())
if __name__ == "__main__":
main()
|