Module: Datadog::Ext::DistributedTracing

Included in:

Contrib::Faraday::Middleware, DistributedTracing::Headers::B3, DistributedTracing::Headers::B3Single, DistributedTracing::Headers::Datadog, DistributedTracing::Headers::Headers, GRPCPropagator, GRPCPropagator::Carrier, HTTPPropagator, OpenTracer::DistributedHeaders, OpenTracer::RackPropagator, OpenTracer::RackPropagator, OpenTracer::TextMapPropagator, OpenTracer::TextMapPropagator

Defined in:

lib/ddtrace/ext/distributed.rb

Constant Summary

HTTP_HEADER_TRACE_ID =

HTTP headers one should set for distributed tracing. These are cross-language (eg: Python, Go and other implementations should honor these)

'x-datadog-trace-id'.freeze

HTTP_HEADER_PARENT_ID =

'x-datadog-parent-id'.freeze

HTTP_HEADER_SAMPLING_PRIORITY =

'x-datadog-sampling-priority'.freeze

SAMPLING_PRIORITY_KEY =

'_sampling_priority_v1'.freeze

HTTP_HEADER_ORIGIN =

'x-datadog-origin'.freeze

ORIGIN_KEY =

'_dd.origin'.freeze

B3_HEADER_TRACE_ID =

B3 headers used for distributed tracing

'x-b3-traceid'.freeze

B3_HEADER_SPAN_ID =

'x-b3-spanid'.freeze

B3_HEADER_SAMPLED =

'x-b3-sampled'.freeze

B3_HEADER_SINGLE =

'b3'.freeze

PROPAGATION_STYLE_DATADOG =

Distributed tracing propagation options

'Datadog'.freeze

PROPAGATION_STYLE_B3 =

'B3'.freeze

PROPAGATION_STYLE_B3_SINGLE_HEADER =

'B3 single header'.freeze

PROPAGATION_INJECT_STYLE_ENV =

'DD_PROPAGATION_INJECT_STYLE'.freeze

PROPAGATION_EXTRACT_STYLE_ENV =

'DD_PROPAGATION_EXTRACT_STYLE'.freeze

GRPC_METADATA_TRACE_ID =

gRPC metadata keys for distributed tracing. github.com/grpc/grpc-go/blob/v1.10.x/Documentation/grpc-metadata.md

'x-datadog-trace-id'.freeze

GRPC_METADATA_PARENT_ID =

'x-datadog-parent-id'.freeze

GRPC_METADATA_SAMPLING_PRIORITY =

'x-datadog-sampling-priority'.freeze

GRPC_METADATA_ORIGIN =

'x-datadog-origin'.freeze