-
Notifications
You must be signed in to change notification settings - Fork 385
/
client.rs
64 lines (54 loc) · 2.05 KB
/
client.rs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
use hello_world::greeter_client::GreeterClient;
use hello_world::HelloRequest;
use opentelemetry::global;
use opentelemetry::global::shutdown_tracer_provider;
use opentelemetry::sdk::propagation::TraceContextPropagator;
use opentelemetry::sdk::runtime::Tokio;
use opentelemetry::trace::TraceResult;
use opentelemetry::{
propagation::Injector,
sdk::trace::Tracer,
trace::{TraceContextExt, Tracer as _},
Context, KeyValue,
};
use opentelemetry_jaeger::JaegerTraceRuntime;
struct MetadataMap<'a>(&'a mut tonic::metadata::MetadataMap);
impl<'a> Injector for MetadataMap<'a> {
/// Set a key and value in the MetadataMap. Does nothing if the key or value are not valid inputs
fn set(&mut self, key: &str, value: String) {
if let Ok(key) = tonic::metadata::MetadataKey::from_bytes(key.as_bytes()) {
if let Ok(val) = tonic::metadata::MetadataValue::from_str(&value) {
self.0.insert(key, val);
}
}
}
}
pub mod hello_world {
tonic::include_proto!("helloworld");
}
fn tracing_init<R: JaegerTraceRuntime>(runtime: R) -> TraceResult<Tracer> {
global::set_text_map_propagator(TraceContextPropagator::new());
opentelemetry_jaeger::new_agent_pipeline()
.with_service_name("grpc-client")
.install_simple(runtime)
}
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync + 'static>> {
let tracer = tracing_init(Tokio)?;
let mut client = GreeterClient::connect("http://[::1]:50051").await?;
let span = tracer.start("client-request");
let cx = Context::current_with_span(span);
let mut request = tonic::Request::new(HelloRequest {
name: "Tonic".into(),
});
global::get_text_map_propagator(|propagator| {
propagator.inject_context(&cx, &mut MetadataMap(request.metadata_mut()))
});
let response = client.say_hello(request).await?;
cx.span().add_event(
"response-received".to_string(),
vec![KeyValue::new("response", format!("{:?}", response))],
);
shutdown_tracer_provider();
Ok(())
}