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-rw-r--r--src/util/Cargo.toml2
-rw-r--r--src/util/lib.rs1
-rw-r--r--src/util/metrics.rs35
3 files changed, 38 insertions, 0 deletions
diff --git a/src/util/Cargo.toml b/src/util/Cargo.toml
index 76b73f4b..e1d516de 100644
--- a/src/util/Cargo.toml
+++ b/src/util/Cargo.toml
@@ -42,3 +42,5 @@ hyper = "0.14"
kube = { version = "0.62", features = ["runtime", "derive"] }
k8s-openapi = { version = "0.13", features = ["v1_22"] }
+
+opentelemetry = "0.17"
diff --git a/src/util/lib.rs b/src/util/lib.rs
index 6856f656..7ed00034 100644
--- a/src/util/lib.rs
+++ b/src/util/lib.rs
@@ -8,6 +8,7 @@ pub mod config;
pub mod crdt;
pub mod data;
pub mod error;
+pub mod metrics;
pub mod persister;
pub mod time;
pub mod token_bucket;
diff --git a/src/util/metrics.rs b/src/util/metrics.rs
new file mode 100644
index 00000000..b3b1fc3c
--- /dev/null
+++ b/src/util/metrics.rs
@@ -0,0 +1,35 @@
+use std::time::SystemTime;
+
+use futures::{future::BoxFuture, Future, FutureExt};
+
+use opentelemetry::{KeyValue, metrics::*};
+
+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 = SystemTime::now();
+ let res = self.await;
+ r.record(request_start.elapsed().map_or(0.0, |d| d.as_secs_f64()), attributes);
+ res
+ }.boxed()
+ }
+
+ fn bound_record_duration(self, r: &'a BoundValueRecorder<f64>) -> BoxFuture<'a, Self::Output> {
+ async move {
+ let request_start = SystemTime::now();
+ let res = self.await;
+ r.record(request_start.elapsed().map_or(0.0, |d| d.as_secs_f64()));
+ res
+ }.boxed()
+ }
+}