Chapter04/

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Chapter 4: Instrumentation Basics with OpenTracing

This chapter contains a step-by-step walk-through of instrumenting a simple application for tracing while evolving it from a monolith to a microservices-based application. The examples are provided in three programming languages (Go, Java, and Python), to illustrate the language-specific differences of applying the concepts of the OpenTracing APIs.

• Exercise 1: The Hello application
• Exercise 2: The first trace
• Exercise 3: Tracing functions and passing context
  • 3a) tracing individual functions
  • 3b) combining spans into a single trace
  • 3c) propagating context in-process
• Exercise 4: Tracing RPC requests
  • 4a) breaking up the monolith
  • 4b) passing context between processes
  • 4c) applying OpenTracing-recommended tags
• Exercise 5: Using "baggage"
• Exercise 6: Applying open-source auto-instrumentation