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