Processors

Processors are components that modify, transform, or enhance data as it flows through Fluent Bit. Unlike filters, processors are tightly coupled to inputs, which means they execute immediately and avoid creating a performance bottleneck.

Additionally, filters can be implemented in a way that mimics the behavior of processors, but processors can't be implemented in a way that mimics filters.

Available processors

Fluent Bit offers the following processors:

• Content Modifier: Manipulate the content, metadata, and attributes of logs and traces.

• Labels: Add, update, or delete metric labels.

• Metrics Selector: Choose which metrics to keep or discard.

• OpenTelemetry Envelope: Transform logs into an OpenTelemetry-compatible format.

• SQL: Use SQL queries to extract log content.

Features

Compatible processors include the following features:

• Conditional Processing: Selectively apply processors to logs based on the value of fields that those logs contain.