Module: Datadog::Tracing::Sampling::Ext::Decision

Defined in:: lib/datadog/tracing/sampling/ext.rb

Overview

List of how the decision was made for the trace-level sampling.

These values used to populate the Metadata::Ext::Distributed::TAG_DECISION_MAKER tag.

The decision has two parts, separated by a ‘-`: `part1-sampling_mechanism`. `part1` is currently not populated, thus this tag is currently formatted as `“-sampling_mechanism”`.

Constant Summary collapse

DEFAULT = Used before the tracer receives any rates from agent and there are no rules configured.

'-0'

AGENT_RATE = The sampling rate received in the agent’s http response.

'-1'

TRACE_SAMPLING_RULE = Sampling rule or sampling rate based on tracer config.

'-3'

MANUAL = User directly sets sampling priority via Datadog::Tracing.reject! or Datadog::Tracing.keep!, or by a custom sampler implementation.

'-4'

ASM = Formerly AppSec.

'-5'

SPAN_SAMPLING_RATE = Single Span Sampled.

'-8'