Files
gniza4linux/tui/backend.py
shuki ad65a376fd Use subprocess.Popen for background jobs to survive TUI exit
asyncio's SubprocessTransport sends SIGKILL to child processes during
event loop cleanup, killing the gniza bash wrapper when the TUI exits.
Switch to subprocess.Popen which has no such cleanup behavior, allowing
backup jobs to continue running after the TUI is closed.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-06 21:28:32 +02:00

60 lines
1.6 KiB
Python

import asyncio
import os
import subprocess
from pathlib import Path
def _gniza_bin() -> str:
gniza_dir = os.environ.get("GNIZA_DIR", "")
if gniza_dir:
return str(Path(gniza_dir) / "bin" / "gniza")
here = Path(__file__).resolve().parent.parent / "bin" / "gniza"
if here.is_file():
return str(here)
return "gniza"
async def run_cli(*args: str) -> tuple[int, str, str]:
cmd = [_gniza_bin(), "--cli"] + list(args)
proc = await asyncio.create_subprocess_exec(
*cmd,
stdout=asyncio.subprocess.PIPE,
stderr=asyncio.subprocess.PIPE,
)
stdout, stderr = await proc.communicate()
return proc.returncode or 0, stdout.decode(), stderr.decode()
def start_cli_background(*args: str, log_file: str) -> subprocess.Popen:
"""Start a CLI process that survives TUI exit.
Uses subprocess.Popen directly (not asyncio) so there is no
SubprocessTransport that would SIGKILL the child on event-loop cleanup.
"""
cmd = [_gniza_bin(), "--cli"] + list(args)
fh = open(log_file, "w")
proc = subprocess.Popen(
cmd,
stdout=fh,
stderr=subprocess.STDOUT,
start_new_session=True,
)
fh.close()
return proc
async def stream_cli(callback, *args: str) -> int:
cmd = [_gniza_bin(), "--cli"] + list(args)
proc = await asyncio.create_subprocess_exec(
*cmd,
stdout=asyncio.subprocess.PIPE,
stderr=asyncio.subprocess.STDOUT,
)
while True:
line = await proc.stdout.readline()
if not line:
break
callback(line.decode().rstrip("\n"))
await proc.wait()
return proc.returncode or 0