OpenFactory Logger Backends

OpenFactory supports multiple logging backends.

The logging backend determines how log entries are emitted (for example, human-readable text or structured JSON).

OpenFactory Applications always use the same logging API regardless of the configured backend. No code changes or additional configuration are required in the application.

For example, the following code behaves identically with every logging backend:

logger = self.logger.with_context(
    asset_uuid=device.uuid,
)

logger.info(
    "Temperature updated",
    extra={"temperature": 42.3},
)

The logging backend is selected through the OPENFACTORY_LOG_BACKEND environment variable. This environment variable is automatically injected by OpenFactory when the application is deployed to an OpenFactory Cluster. Applications should never detect or depend on the selected backend.

The following logging backends are currently available:

• Text Logger Backend
• Loki Logger Backend