5daabc341a
'/tmp/opc-certs' is a spec'd, overridable-via-env default (already noqa'd for ruff's S108); bandit needs its own '# nosec B108' since it runs as a separate CI step and doesn't read ruff's noqa comments.
47 lines
1.8 KiB
Python
47 lines
1.8 KiB
Python
"""Gateway-specific env config (NATS/gRPC/certs/write flags).
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Separate from ingestor.py's inline os.getenv (Redis/Mongo/TTLs) — this module
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covers only the new gateway wiring consumed by app.py in Task 18.
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"""
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from dataclasses import dataclass
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from os import getenv
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def _env_bool(name: str, default: bool) -> bool:
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value = getenv(name)
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if value is None:
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return default
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return value.strip().lower() in ('true', '1', 'yes')
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@dataclass
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class GatewayConfig:
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nats_url: str = 'nats://localhost:4222'
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nats_write_subject: str = 'opc.write'
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nats_queue: str = 'gateway-writers'
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grpc_enabled: bool = False
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grpc_port: int = 50051
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cert_bucket: str = 'sientia-dataops'
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cert_cache_dir: str = '/tmp/opc-certs' # noqa: S108 # nosec B108 - default is spec'd, overridable via env
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write_timestamp: bool = True
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write_quality: bool = True
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write_min_pause_s: float = 0.0
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idle_conn_max_s: float = 300.0
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@classmethod
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def from_env(cls) -> 'GatewayConfig':
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return cls(
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nats_url=getenv('NATS_URL', cls.nats_url),
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nats_write_subject=getenv('NATS_WRITE_SUBJECT', cls.nats_write_subject),
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nats_queue=getenv('NATS_QUEUE', cls.nats_queue),
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grpc_enabled=_env_bool('GRPC_ENABLED', cls.grpc_enabled),
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grpc_port=int(getenv('GRPC_PORT', cls.grpc_port)),
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cert_bucket=getenv('CERT_BUCKET', cls.cert_bucket),
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cert_cache_dir=getenv('CERT_CACHE_DIR', cls.cert_cache_dir),
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write_timestamp=_env_bool('WRITE_TIMESTAMP', cls.write_timestamp),
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write_quality=_env_bool('WRITE_QUALITY', cls.write_quality),
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write_min_pause_s=float(getenv('WRITE_MIN_PAUSE_S', cls.write_min_pause_s)),
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idle_conn_max_s=float(getenv('IDLE_CONN_MAX_S', cls.idle_conn_max_s)),
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)
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