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https://github.com/NousResearch/hermes-agent.git
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eeda18a9b7
Gateway exits weren't reaching the panic hook because entry.py calls sys.exit(0) on broken stdout — clean termination, no exception. That left "gateway exited" in the TUI with zero forensic trail when pipe breaks happened mid-turn. Entry.py now tags each exit path — startup-write failure, parse-error- response write failure, per-method response write failure, stdin EOF — with a one-line entry in ~/.hermes/logs/tui_gateway_crash.log and a gateway.stderr breadcrumb. Includes the JSON-RPC method name on the dispatch path, which is the only way to tell "died right after handling voice.toggle on" from "died emitting the second message.complete".
68 lines
2.2 KiB
Python
68 lines
2.2 KiB
Python
import json
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import os
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import signal
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import sys
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import time
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from tui_gateway.server import _CRASH_LOG, dispatch, resolve_skin, write_json
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signal.signal(signal.SIGPIPE, signal.SIG_DFL)
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signal.signal(signal.SIGINT, signal.SIG_IGN)
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def _log_exit(reason: str) -> None:
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"""Record why the gateway subprocess is shutting down.
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Three exit paths (startup write fail, parse-error-response write fail,
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dispatch-response write fail, stdin EOF) all collapse into a silent
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sys.exit(0) here. Without this trail the TUI shows "gateway exited"
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with no actionable clue about WHICH broken pipe or WHICH message
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triggered it — the main reason voice-mode turns look like phantom
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crashes when the real story is "TUI read pipe closed on this event".
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"""
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try:
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os.makedirs(os.path.dirname(_CRASH_LOG), exist_ok=True)
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with open(_CRASH_LOG, "a", encoding="utf-8") as f:
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f.write(
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f"\n=== gateway exit · {time.strftime('%Y-%m-%d %H:%M:%S')} "
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f"· reason={reason} ===\n"
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)
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except Exception:
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pass
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print(f"[gateway-exit] {reason}", file=sys.stderr, flush=True)
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def main():
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if not write_json({
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"jsonrpc": "2.0",
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"method": "event",
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"params": {"type": "gateway.ready", "payload": {"skin": resolve_skin()}},
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}):
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_log_exit("startup write failed (broken stdout pipe before first event)")
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sys.exit(0)
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for raw in sys.stdin:
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line = raw.strip()
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if not line:
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continue
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try:
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req = json.loads(line)
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except json.JSONDecodeError:
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if not write_json({"jsonrpc": "2.0", "error": {"code": -32700, "message": "parse error"}, "id": None}):
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_log_exit("parse-error-response write failed (broken stdout pipe)")
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sys.exit(0)
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continue
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method = req.get("method") if isinstance(req, dict) else None
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resp = dispatch(req)
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if resp is not None:
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if not write_json(resp):
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_log_exit(f"response write failed for method={method!r} (broken stdout pipe)")
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sys.exit(0)
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_log_exit("stdin EOF (TUI closed the command pipe)")
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if __name__ == "__main__":
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main()
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