opentelemetry-rust/examples/tracing-grpc

GRPC example

Example showing Tonic client and server interaction with OpenTelemetry context propagation. Traces are exported to stdout.

Running the example

# Run the server first
$ cargo run --bin grpc-server

# Now run the client to make a request to the server
$ cargo run --bin grpc-client

Observe that the traces are exported to stdout, and that they share the same TraceId. Also, the server span would be parented to the client span. The example demonstrates how to propagate and restore OpenTelemetry context when making out-of-process calls, so as to ensure the same trace is continued in the next process. The client here initiates the trace by creating the root client span, and it propagates its context to the server. The server, extracts the context, and creates its own server span using the extracted context, ensuring both spans are correlated.