opentelemetry-cpp-sample
========================

Sample C++ application with OpenTelemetry instrumentation to emit
telemetry data.

Author:  Giovanni Santini
Mail:    giovanni.santini@proton.me
License: MIT


Usage
-----

Build and run the application:

    cmake -Bbuild
    cmake --build build -j$(nproc) --target=opentelemetry-sample
    ./build/opentelemetry-sample

The application will listen on 8080 for HTTP GET requests. It
registers a /rolldice route that will return a random number and
generate an opentelemetry trace, for example:

{
  name          : RollDiceServer
  trace_id      : 69d9ea15f23ef6d565f2306cc368a330
  span_id       : 922fb3348352e8e7
  tracestate    : 
  parent_span_id: 0000000000000000
  start         : 1761841788256089093
  duration      : 7015
  description   : 
  span kind     : Internal
  status        : Unset
  attributes    : 
        random-number: 6
  events        : 
  links         : 
  resources     : 
        service.name: unknown_service
        telemetry.sdk.version: 1.24.0-dev
        telemetry.sdk.name: opentelemetry
        telemetry.sdk.language: cpp
  instr-lib     : rolldice-tracer
}

Opentelemetry
-------------

OpenTelemetry is an open-source observability framework that helps
collect traces, metrics, and logs from applications. It provides a
standard way to instrument code and export telemetry data to backends
like Prometheus, Jaeger, or Zipkin.

Official website:

    https://opentelemetry.io/