# Custom root span

## Running

You can launch this example with

```bash
cargo run
```

An `actix-web` application will be listening on port `8080`.  
You can fire requests to it with:

```bash
curl -v http://localhost:8080/hello
```
```text
Hello world!
```

or

```bash
curl -v http://localhost:8080/hello/my-name
```
```text
Hello my-name!
```

## Visualising traces 

Spans will be also printed to the console in JSON format, as structured log records.

You can look at the exported spans in your browser by visiting [http://localhost:16686](http://localhost:16686) if you launch a Jaeger instance: 

```bash
docker run -d -p6831:6831/udp -p6832:6832/udp -p16686:16686 jaegertracing/all-in-one:latest
```