Actix Web OpenTelemetry

OpenTelemetry integration for Actix Web.

Execute client and server example

# Run jaeger in background
$ docker run -d -p6831:6831/udp -p6832:6832/udp -p16686:16686 jaegertracing/all-in-one:latest

# Run server example with tracing middleware
$ cargo run --example server
# (In other tab) Run client example with request tracing
$ cargo run --example client

# View spans (see the image below)
$ firefox http://localhost:16686/