Refactor how durations are measured

src/table/table.rs

@@ -1,6 +1,6 @@
 use std::collections::{BTreeMap, HashMap};
 use std::sync::Arc;
-use std::time::{Duration, SystemTime};
+use std::time::Duration;
 
 use async_trait::async_trait;
 use futures::stream::*;
@@ -9,6 +9,7 @@ use serde_bytes::ByteBuf;
 
 use garage_util::data::*;
 use garage_util::error::Error;
+use garage_util::metrics::RecordDuration;
 
 use garage_rpc::system::System;
 use garage_rpc::*;
@@ -81,8 +82,6 @@ where
 	}
 
 	pub async fn insert(&self, e: &F::E) -> Result<(), Error> {
-		let request_start = SystemTime::now();
-
 		let hash = e.partition_key().hash();
 		let who = self.data.replication.write_nodes(&hash);
 		//eprintln!("insert who: {:?}", who);
@@ -100,19 +99,22 @@ where
 					.with_quorum(self.data.replication.write_quorum())
 					.with_timeout(TABLE_RPC_TIMEOUT),
 			)
+			.bound_record_duration(&self.data.metrics.put_request_duration)
 			.await?;
 
 		self.data.metrics.put_request_counter.add(1);
-		self.data
-			.metrics
-			.put_request_duration
-			.record(request_start.elapsed().map_or(0.0, |d| d.as_secs_f64()));
 		Ok(())
 	}
 
 	pub async fn insert_many(&self, entries: &[F::E]) -> Result<(), Error> {
-		let request_start = SystemTime::now();
+		self.insert_many_internal(entries)
+			.bound_record_duration(&self.data.metrics.put_request_duration)
+			.await?;
+		self.data.metrics.put_request_counter.add(1);
+		Ok(())
+	}
 
+	async fn insert_many_internal(&self, entries: &[F::E]) -> Result<(), Error> {
 		let mut call_list: HashMap<_, Vec<_>> = HashMap::new();
 
 		for entry in entries.iter() {
@@ -150,12 +152,6 @@ where
 		if errors.len() > self.data.replication.max_write_errors() {
 			Err(Error::Message("Too many errors".into()))
 		} else {
-			self.data.metrics.put_request_counter.add(1);
-			self.data
-				.metrics
-				.put_request_duration
-				.record(request_start.elapsed().map_or(0.0, |d| d.as_secs_f64()));
-
 			Ok(())
 		}
 	}
@@ -165,11 +161,20 @@ where
 		partition_key: &F::P,
 		sort_key: &F::S,
 	) -> Result<Option<F::E>, Error> {
-		let request_start = SystemTime::now();
+		let res = self.get_internal(partition_key, sort_key)
+			.bound_record_duration(&self.data.metrics.get_request_duration)
+			.await?;
+		self.data.metrics.get_request_counter.add(1);
+		Ok(res)
+	}
 
+	async fn get_internal(
+		self: &Arc<Self>,
+		partition_key: &F::P,
+		sort_key: &F::S,
+	) -> Result<Option<F::E>, Error> {
 		let hash = partition_key.hash();
 		let who = self.data.replication.read_nodes(&hash);
-		//eprintln!("get who: {:?}", who);
 
 		let rpc = TableRpc::<F>::ReadEntry(partition_key.clone(), sort_key.clone());
 		let resps = self
@@ -217,11 +222,6 @@ where
 			}
 		}
 
-		self.data.metrics.get_request_counter.add(1);
-		self.data
-			.metrics
-			.get_request_duration
-			.record(request_start.elapsed().map_or(0.0, |d| d.as_secs_f64()));
 		Ok(ret)
 	}
 
@@ -232,8 +232,20 @@ where
 		filter: Option<F::Filter>,
 		limit: usize,
 	) -> Result<Vec<F::E>, Error> {
-		let request_start = SystemTime::now();
+		let res = self.get_range_internal(partition_key, begin_sort_key, filter, limit)
+			.bound_record_duration(&self.data.metrics.get_request_duration)
+			.await?;
+		self.data.metrics.get_request_counter.add(1);
+		Ok(res)
+	}
 
+	async fn get_range_internal(
+		self: &Arc<Self>,
+		partition_key: &F::P,
+		begin_sort_key: Option<F::S>,
+		filter: Option<F::Filter>,
+		limit: usize,
+	) -> Result<Vec<F::E>, Error> {
 		let hash = partition_key.hash();
 		let who = self.data.replication.read_nodes(&hash);
 
@@ -291,12 +303,6 @@ where
 			.take(limit)
 			.map(|(_k, v)| v.take().unwrap())
 			.collect::<Vec<_>>();
-
-		self.data.metrics.get_request_counter.add(1);
-		self.data
-			.metrics
-			.get_request_duration
-			.record(request_start.elapsed().map_or(0.0, |d| d.as_secs_f64()));
 		Ok(ret_vec)
 	}