985df970f8
Each linked overlay gets a checkbox on the blueprint detail page that opts
its server.cfg in as exec server_overlay_<id>. The web app builds the
spec with {path, alias} per overlay and prepends exec server_overlay_<id>
lines to the blueprint config in lowest-overlay-first order. The host
stages those copies in the overlayfs upper layer before mounting (avoids
copy-up writes against a sandbox-uid file). A live preview block above the
Config textarea shows what gets auto-executed.
Schema:
- alembic 0007: BlueprintOverlay.expose_server_cfg BOOLEAN
Spec contract:
- l4d2host OverlayRef(path, alias?). load_spec accepts both bare-string
and {path, alias} entries.
Side effects folded in (same file in l4d2_facade):
- start_server auto-initializes; the manual Initialize step is no longer
needed before Start.
- initialize_server no longer runs blueprint builders — builds happen on
overlay save, not on every server Start.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
from dataclasses import dataclass, field
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from pathlib import Path
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import yaml
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@dataclass(slots=True)
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class OverlayRef:
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path: str
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alias: str | None = None
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@dataclass(slots=True)
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class InstanceSpec:
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port: int
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overlays: list[OverlayRef] = field(default_factory=list)
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arguments: list[str] = field(default_factory=list)
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config: list[str] = field(default_factory=list)
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def _parse_overlay(item) -> OverlayRef:
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if isinstance(item, str):
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return OverlayRef(path=item)
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if isinstance(item, dict):
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path = item.get("path")
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if not isinstance(path, str) or not path:
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raise ValueError(f"overlay entry missing 'path': {item!r}")
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raw_alias = item.get("alias")
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alias = str(raw_alias) if raw_alias not in (None, "") else None
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return OverlayRef(path=path, alias=alias)
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raise ValueError(f"unsupported overlay entry type: {type(item).__name__}")
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def load_spec(path: Path) -> InstanceSpec:
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raw = yaml.safe_load(path.read_text()) or {}
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return InstanceSpec(
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port=int(raw["port"]),
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overlays=[_parse_overlay(item) for item in raw.get("overlays", [])],
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arguments=[str(item) for item in raw.get("arguments", [])],
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config=[str(item) for item in raw.get("config", [])],
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)
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