Add graphs for each function name (#4214)

substrate/client/grafana-data-source/src/lib.rs

@@ -36,7 +36,7 @@ mod networking;
 pub use server::run_server;
 pub use util::now_millis;
 
-type Metrics = HashMap<&'static str, Vec<(f32, i64)>>;
+type Metrics = HashMap<String, Vec<(f32, i64)>>;
 
 lazy_static! {
 	/// The `RwLock` wrapping the metrics. Not intended to be used directly.

substrate/client/grafana-data-source/test/src/main.rs

@@ -26,8 +26,8 @@ async fn randomness() {
 		let random = rand::thread_rng().gen_range(0.0, 1000.0);
 
 		record_metrics!(
-			"random data" => random,
-			"random^2" => random * random
+			"random data".to_owned() => random,
+			"random^2".to_owned() => random * random
 		);
 	}
 }

substrate/client/service/src/builder.rs

@@ -1005,15 +1005,15 @@ ServiceBuilder<
 				"used_state_cache_size" => used_state_cache_size,
 			);
 			record_metrics!(
-				"peers" => num_peers,
-				"height" => best_number,
-				"txcount" => txpool_status.ready,
-				"cpu" => cpu_usage,
-				"memory" => memory,
-				"finalized_height" => finalized_number,
-				"bandwidth_download" => bandwidth_download,
-				"bandwidth_upload" => bandwidth_upload,
-				"used_state_cache_size" => used_state_cache_size
+				"peers".to_owned() => num_peers,
+				"height".to_owned() => best_number,
+				"txcount".to_owned() => txpool_status.ready,
+				"cpu".to_owned() => cpu_usage,
+				"memory".to_owned() => memory,
+				"finalized_height".to_owned() => finalized_number,
+				"bandwidth_download".to_owned() => bandwidth_download,
+				"bandwidth_upload".to_owned() => bandwidth_upload,
+				"used_state_cache_size".to_owned() => used_state_cache_size
 			);
 
 			Ok(())

substrate/client/tracing/src/lib.rs

@@ -202,5 +202,6 @@ fn send_telemetry(span_datum: SpanDatum) {
 }
 
 fn send_grafana(span_datum: SpanDatum) {
-	record_metrics!(span_datum.target => span_datum.overall_time.as_nanos());
+	let name = format!("{}::{}", span_datum.target, span_datum.name);
+	record_metrics!(name => span_datum.overall_time.as_nanos());
 }