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Telemetry

This directory contains the implementation of gRPC's telemetry system.

Overarching Purpose

The telemetry system provides a way to collect and report metrics and tracing about the behavior of gRPC. This information can be used for monitoring, debugging, and performance tuning.

Files

  • call_tracer.h / call_tracer.cc: Defines the CallTracer class, which is used to trace the lifecycle of a gRPC call.
  • metrics.h / metrics.cc: Defines the Metrics class, which is used to collect and report metrics.
  • stats.h / stats.cc: Defines the Stats class, which is used to collect and report statistics.
  • tcp_tracer.h / tcp_tracer.cc: Defines the TcpTracer class, which is used to trace TCP-level events.

Notes

  • The telemetry system is a key component of gRPC's observability infrastructure.
  • It provides a wealth of information about the behavior of gRPC, which can be used to diagnose and fix a wide variety of problems.
  • The telemetry data can be exported to a variety of monitoring systems, such as Prometheus and OpenCensus.