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fix(cron): expand \${VAR} refs in config.yaml during job execution (#15890)

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The cron scheduler's run_job() loaded config.yaml with yaml.safe_load()
but never called _expand_env_vars(), so ${HERMES_MODEL} and similar
references in model:, fallback_providers:, and other config.yaml fields
were forwarded to the LLM API as literal strings, causing HTTP 400 errors.

The normal CLI path has always called _expand_env_vars() via load_config(),
so this was a cron-only gap. The .env load at the top of run_job() already
populates os.environ before config.yaml is read, so the expansion sees the
correct values.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
briandevans 2026-04-25 22:14:36 -07:00 • committed by Teknium
parent fd9c32c0f2
commit 75bce317a3
2 changed files with 99 additions and 1 deletions
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3
cron/scheduler.py
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@ -35,7 +35,7 @@ from typing import List, Optional
sys.path.insert(0, str(Path(__file__).parent.parent))
from hermes_constants import get_hermes_home
from hermes_cli.config import load_config
from hermes_cli.config import load_config, _expand_env_vars
from hermes_time import now as _hermes_now
logger = logging.getLogger(__name__)
@ -1082,6 +1082,7 @@ def run_job(job: dict) -> tuple[bool, str, str, Optional[str]]:
if os.path.exists(_cfg_path):
with open(_cfg_path) as _f:
_cfg = yaml.safe_load(_f) or {}
_cfg = _expand_env_vars(_cfg)
_model_cfg = _cfg.get("model", {})
if not job.get("model"):
if isinstance(_model_cfg, str):