mirror of
https://github.com/kuhyx/steam-backlog-enforcer.git
synced 2026-11-10 19:27:04 +01:00
Krzysztof kuhy Rudnicki
dc22bd557c
The BG3 fast install of 2026-10-23 downloaded 160 GB, was refused by the installer, and the web job still ended on a full bar, "Done!" and Succeeded while Steam restarted the download from 0%. - A failed run's reason is read from the installer's own run log (its ERROR lines). A waiting job prints "Failed: fast install of <game>: <reason>", which fails the job; `install` no longer says "Done!" after it. - Daemon-started failures stay on the Dashboard's Fast install card (and in ctl status, `error`) until a new run starts or the game is installed. - install_game writes Steam's "needs downloading" manifest before the installer runs: it only finishes a manifest it finds, so fresh installs were refused for want of one. - Command building moved to _fast_install_cmd (250-line cap). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GYmCezqhUjUmMisF5YtM4F
56 lines
2.1 KiB
Python
56 lines
2.1 KiB
Python
"""Why a steam-game-installer run failed, in the installer's own words.
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A bare exit status hid the BG3 run of 2026-10-23: 160 GB downloaded, then a
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refusal to mark it installed, and the job still read "Succeeded". The console
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output ends with ``Run log (send this): <path>``; that run log tags every line
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with its level, so its ERROR lines are exactly the reasons the run gave up.
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Both files are read from the end only: a depotdownloader run writes a line
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per downloaded file, tens of megabytes of them.
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"""
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from __future__ import annotations
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from pathlib import Path
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import re
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from typing import Final
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# The reasons and the run log line are printed last; 64 KiB holds them.
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_TAIL_BYTES: Final = 1 << 16
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_RUN_LOG: Final = re.compile(r"^Run log(?: \(send this\))?: (/.+)$")
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_ERROR: Final = re.compile(r"^\S+ \S+ ERROR\s+[\w.]+: (.*)$")
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def _tail_lines(path: Path) -> list[str]:
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"""The last lines of *path* (empty if unreadable), first partial one dropped."""
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try:
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with path.open("rb") as log:
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size = log.seek(0, 2)
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log.seek(max(0, size - _TAIL_BYTES))
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data = log.read()
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except OSError:
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return []
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lines = data.decode("utf-8", "replace").splitlines()
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return lines[1:] if size > _TAIL_BYTES else lines
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def _run_log_errors(console: list[str]) -> list[str]:
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"""ERROR messages of the run log the console output names last."""
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for line in reversed(console):
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if match := _RUN_LOG.match(line.strip()):
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run_log = _tail_lines(Path(match.group(1)))
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return [m.group(1).strip() for ln in run_log if (m := _ERROR.match(ln))]
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return []
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def failure_reason(console_log: Path, returncode: int) -> str:
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"""One line saying why the run that just wrote *console_log* failed."""
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console = _tail_lines(console_log)
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errors = _run_log_errors(console)
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if errors:
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# Callers add their own full stop.
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return " ".join(errors).rstrip(".")
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# Died before the installer could log a reason (a traceback, a kill).
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last = next((ln.strip() for ln in reversed(console) if ln.strip()), "")
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return f"exit {returncode}: {last}" if last else f"exit {returncode}"
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