Set Trace Context

Overview

The Set Trace Context processor reads trace and span identifiers from logs and sets trace_id and span_id for correlation.

This enables log-to-trace linking in downstream observability and investigation tools.

Supported types: Logs

Configuration

Parameter	Type	Default	Required	Description
field_type	string	—	Yes	Source type for IDs: attribute, body, or resource.
trace_id_field	string	—	No	Field containing 32-char hex trace ID.
span_id_field	string	—	No	Field containing 16-char hex span ID.

At least one of trace_id_field or span_id_field should be configured.

Example Configuration

{
  "field_type": "attribute",
  "trace_id_field": "trace_id",
  "span_id_field": "span_id"
}