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
|
use std::time::Instant;
use futures::{future::BoxFuture, Future, FutureExt};
use rand::Rng;
use opentelemetry::{metrics::*, trace::TraceId, KeyValue};
pub trait RecordDuration<'a>: 'a {
type Output;
fn record_duration(
self,
r: &'a ValueRecorder<f64>,
attributes: &'a [KeyValue],
) -> BoxFuture<'a, Self::Output>;
fn bound_record_duration(self, r: &'a BoundValueRecorder<f64>) -> BoxFuture<'a, Self::Output>;
}
impl<'a, T, O> RecordDuration<'a> for T
where
T: Future<Output = O> + Send + 'a,
{
type Output = O;
fn record_duration(
self,
r: &'a ValueRecorder<f64>,
attributes: &'a [KeyValue],
) -> BoxFuture<'a, Self::Output> {
async move {
let request_start = Instant::now();
let res = self.await;
r.record(
Instant::now()
.saturating_duration_since(request_start)
.as_secs_f64(),
attributes,
);
res
}
.boxed()
}
fn bound_record_duration(self, r: &'a BoundValueRecorder<f64>) -> BoxFuture<'a, Self::Output> {
async move {
let request_start = Instant::now();
let res = self.await;
r.record(
Instant::now()
.saturating_duration_since(request_start)
.as_secs_f64(),
);
res
}
.boxed()
}
}
// ----
pub fn gen_trace_id() -> TraceId {
rand::thread_rng().gen::<[u8; 16]>().into()
}
|
