Files
hermes-agent/tools/debug_helpers.py
Teknium 9c96f669a1 feat: centralized logging, instrumentation, hermes logs CLI, gateway noise fix (#5430)
Adds comprehensive logging infrastructure to Hermes Agent across 4 phases:

**Phase 1 — Centralized logging**
- New hermes_logging.py with idempotent setup_logging() used by CLI, gateway, and cron
- agent.log (INFO+) and errors.log (WARNING+) with RotatingFileHandler + RedactingFormatter
- config.yaml logging: section (level, max_size_mb, backup_count)
- All entry points wired (cli.py, main.py, gateway/run.py, run_agent.py)
- Fixed debug_helpers.py writing to ./logs/ instead of ~/.hermes/logs/

**Phase 2 — Event instrumentation**
- API calls: model, provider, tokens, latency, cache hit %
- Tool execution: name, duration, result size (both sequential + concurrent)
- Session lifecycle: turn start (session/model/provider/platform), compression (before/after)
- Credential pool: rotation events, exhaustion tracking

**Phase 3 — hermes logs CLI command**
- hermes logs / hermes logs -f / hermes logs errors / hermes logs gateway
- --level, --session, --since filters
- hermes logs list (file sizes + ages)

**Phase 4 — Gateway bug fix + noise reduction**
- fix: _async_flush_memories() called with wrong arg count — sessions never flushed
- Batched session expiry logs: 6 lines/cycle → 2 summary lines
- Added inbound message + response time logging

75 new tests, zero regressions on the full suite.
2026-04-06 00:08:20 -07:00

107 lines
3.6 KiB
Python

"""Shared debug session infrastructure for Hermes tools.
Replaces the identical DEBUG_MODE / _log_debug_call / _save_debug_log /
get_debug_session_info boilerplate previously duplicated across web_tools,
vision_tools, mixture_of_agents_tool, and image_generation_tool.
Usage in a tool module:
from tools.debug_helpers import DebugSession
_debug = DebugSession("web_tools", env_var="WEB_TOOLS_DEBUG")
# Log a call (no-op when debug mode is off)
_debug.log_call("web_search", {"query": q, "results": len(r)})
# Save the debug log (no-op when debug mode is off)
_debug.save()
# Expose debug info to external callers
def get_debug_session_info():
return _debug.get_session_info()
"""
import datetime
import json
import logging
import os
import uuid
from pathlib import Path
from typing import Any, Dict
from hermes_constants import get_hermes_home
logger = logging.getLogger(__name__)
class DebugSession:
"""Per-tool debug session that records tool calls to a JSON log file.
Activated by a tool-specific environment variable (e.g. WEB_TOOLS_DEBUG=true).
When disabled, all methods are cheap no-ops.
"""
def __init__(self, tool_name: str, *, env_var: str) -> None:
self.tool_name = tool_name
self.enabled = os.getenv(env_var, "false").lower() == "true"
self.session_id = str(uuid.uuid4()) if self.enabled else ""
self.log_dir = get_hermes_home() / "logs"
self._calls: list[Dict[str, Any]] = []
self._start_time = datetime.datetime.now().isoformat() if self.enabled else ""
if self.enabled:
self.log_dir.mkdir(parents=True, exist_ok=True)
logger.debug("%s debug mode enabled - Session ID: %s",
tool_name, self.session_id)
@property
def active(self) -> bool:
return self.enabled
def log_call(self, call_name: str, call_data: Dict[str, Any]) -> None:
"""Append a tool-call entry to the in-memory log."""
if not self.enabled:
return
self._calls.append({
"timestamp": datetime.datetime.now().isoformat(),
"tool_name": call_name,
**call_data,
})
def save(self) -> None:
"""Flush the in-memory log to a JSON file in the logs directory."""
if not self.enabled:
return
try:
filename = f"{self.tool_name}_debug_{self.session_id}.json"
filepath = self.log_dir / filename
payload = {
"session_id": self.session_id,
"start_time": self._start_time,
"end_time": datetime.datetime.now().isoformat(),
"debug_enabled": True,
"total_calls": len(self._calls),
"tool_calls": self._calls,
}
with open(filepath, "w", encoding="utf-8") as f:
json.dump(payload, f, indent=2, ensure_ascii=False)
logger.debug("%s debug log saved: %s", self.tool_name, filepath)
except Exception as e:
logger.error("Error saving %s debug log: %s", self.tool_name, e)
def get_session_info(self) -> Dict[str, Any]:
"""Return a summary dict suitable for returning from get_debug_session_info()."""
if not self.enabled:
return {
"enabled": False,
"session_id": None,
"log_path": None,
"total_calls": 0,
}
return {
"enabled": True,
"session_id": self.session_id,
"log_path": str(self.log_dir / f"{self.tool_name}_debug_{self.session_id}.json"),
"total_calls": len(self._calls),
}