https://github.com/rochdev/datadog-tracer-spec

OpenTracing propagation specification for Datadog distributed tracing
https://github.com/rochdev/datadog-tracer-spec

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OpenTracing propagation specification for Datadog distributed tracing

• Host: GitHub
• URL: https://github.com/rochdev/datadog-tracer-spec
• Owner: rochdev
• License: mit
• Created: 2017-04-17T17:31:16.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2017-04-19T22:45:20.000Z (about 9 years ago)
• Last Synced: 2025-01-01T07:44:51.598Z (over 1 year ago)
• Size: 1.95 KB
• Stars: 3
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# [WIP] Datadog Tracer Specification

OpenTracing propagation specification for Datadog distributed tracing. This specification was created to ensure that distributed tracing works properly across the different implementations in any programming language.

## Propagation

### Text Map

Text map propagation uses the following keys:

* **dd-tracer-traceid**

* **dd-tracer-spanid**

* **dd-tracer-sampled**

* **dd-baggage-{key}**

### HTTP Headers

Same as text map. Additionally, keys and values should be suitable according to [RFC 7230](https://tools.ietf.org/html/rfc7230#section-3.2.4).

### Binary

Binary propagation is done using [Protocol Buffers Version 3](https://developers.google.com/protocol-buffers/docs/reference/proto3-spec) in the following format:

```protobuf

syntax = "proto3";

message TracerState {

  fixed64 trace_id = 1;

  fixed64 span_id = 2;

  bool    sampled = 3;

  map baggage_items = 4;

}

```