feat(workflows): add metrics

lib/chirp-workflow/core/Cargo.toml

@@ -14,6 +14,7 @@ formatted-error = { path = "../../formatted-error" }
 futures-util = "0.3"
 global-error = { path = "../../global-error" }
 indoc = "2.0.5"
+lazy_static = "1.4"
 prost = "0.12.4"
 prost-types = "0.12.4"
 rand = "0.8.5"

lib/chirp-workflow/core/src/ctx/listen.rs

@@ -32,6 +32,11 @@ impl<'a> ListenCtx<'a> {
 			return Err(WorkflowError::NoSignalFound(Box::from(signal_names)));
 		};
 
+		let recv_lag = (rivet_util::timestamp::now() as f64 - signal.create_ts as f64) / 1000.;
+		crate::metrics::SIGNAL_RECV_LAG
+			.with_label_values(&[&self.ctx.name(), &signal.signal_name])
+			.observe(recv_lag);
+
 		tracing::info!(
 			workflow_name=%self.ctx.name(),
 			workflow_id=%self.ctx.workflow_id(),

lib/chirp-workflow/core/src/ctx/message.rs

@@ -322,6 +322,12 @@ impl MessageCtx {
 		let message = if let Some(message_buf) = message_buf {
 			let message = ReceivedMessage::<M>::deserialize(message_buf.as_slice())?;
 			tracing::info!(?message, "immediate read tail message");
+
+			let recv_lag = (rivet_util::timestamp::now() as f64 - message.ts as f64) / 1000.;
+			crate::metrics::MESSAGE_RECV_LAG
+				.with_label_values(&[M::NAME])
+				.observe(recv_lag);
+
 			Some(message)
 		} else {
 			tracing::info!("no tail message to read");
@@ -520,6 +526,11 @@ where
 				let message = ReceivedMessage::<M>::deserialize(&nats_message.payload[..])?;
 				tracing::info!(?message, "received message");
 
+				let recv_lag = (rivet_util::timestamp::now() as f64 - message.ts as f64) / 1000.;
+				crate::metrics::MESSAGE_RECV_LAG
+					.with_label_values(&[M::NAME])
+					.observe(recv_lag);
+
 				return Ok(message);
 			}
 

lib/chirp-workflow/core/src/ctx/workflow.rs

@@ -1,4 +1,4 @@
-use std::{collections::HashMap, sync::Arc};
+use std::{collections::HashMap, sync::Arc, time::Instant};
 
 use global_error::{GlobalError, GlobalResult};
 use serde::{de::DeserializeOwned, Serialize};
@@ -15,9 +15,10 @@ use crate::{
 	executable::{closure, AsyncResult, Executable},
 	listen::{CustomListener, Listen},
 	message::Message,
+	metrics,
 	registry::RegistryHandle,
 	signal::Signal,
-	util::Location,
+	util::{GlobalErrorExt, Location},
 	workflow::{Workflow, WorkflowInput},
 };
 
@@ -211,7 +212,7 @@ impl WorkflowCtx {
 				// Retry the workflow if its recoverable
 				let deadline_ts = if let Some(deadline_ts) = err.backoff() {
 					Some(deadline_ts)
-				} else if err.is_recoverable() {
+				} else if err.is_retryable() {
 					Some(rivet_util::timestamp::now() + RETRY_TIMEOUT_MS as i64)
 				} else {
 					None
@@ -225,11 +226,14 @@ impl WorkflowCtx {
 				// finish. This workflow will be retried when the sub workflow completes
 				let wake_sub_workflow = err.sub_workflow();
 
-				if deadline_ts.is_some() || !wake_signals.is_empty() || wake_sub_workflow.is_some()
-				{
+				if err.is_recoverable() && !err.is_retryable() {
 					tracing::info!(name=%self.name, id=%self.workflow_id, ?err, "workflow sleeping");
 				} else {
 					tracing::error!(name=%self.name, id=%self.workflow_id, ?err, "workflow error");
+
+					metrics::WORKFLOW_ERRORS
+						.with_label_values(&[&self.name, err.to_string().as_str()])
+						.inc();
 				}
 
 				let err_str = err.to_string();
@@ -288,10 +292,14 @@ impl WorkflowCtx {
 			A::NAME,
 		);
 
+		let start_instant = Instant::now();
+
 		let res = tokio::time::timeout(A::TIMEOUT, A::run(&ctx, input))
 			.await
 			.map_err(|_| WorkflowError::ActivityTimeout);
 
+		let dt = start_instant.elapsed().as_secs_f64();
+
 		match res {
 			Ok(Ok(output)) => {
 				tracing::debug!("activity success");
@@ -313,45 +321,69 @@ impl WorkflowCtx {
 					)
 					.await?;
 
+				metrics::ACTIVITY_DURATION
+					.with_label_values(&[&self.name, A::NAME, ""])
+					.observe(dt);
+
 				Ok(output)
 			}
 			Ok(Err(err)) => {
 				tracing::debug!(?err, "activity error");
 
-				// Write error (failed state)
+				let err_str = err.to_string();
 				let input_val =
 					serde_json::to_value(input).map_err(WorkflowError::SerializeActivityInput)?;
+
+				// Write error (failed state)
 				self.db
 					.commit_workflow_activity_event(
 						self.workflow_id,
 						self.full_location().as_ref(),
 						activity_id,
 						create_ts,
 						input_val,
-						Err(&err.to_string()),
+						Err(&err_str),
 						self.loop_location(),
 					)
 					.await?;
 
+				if !err.is_workflow_recoverable() {
+					metrics::ACTIVITY_ERRORS
+						.with_label_values(&[&self.name, A::NAME, &err_str])
+						.inc();
+				}
+				metrics::ACTIVITY_DURATION
+					.with_label_values(&[&self.name, A::NAME, &err_str])
+					.observe(dt);
+
 				Err(WorkflowError::ActivityFailure(err, 0))
 			}
 			Err(err) => {
 				tracing::debug!("activity timeout");
 
+				let err_str = err.to_string();
 				let input_val =
 					serde_json::to_value(input).map_err(WorkflowError::SerializeActivityInput)?;
+
 				self.db
 					.commit_workflow_activity_event(
 						self.workflow_id,
 						self.full_location().as_ref(),
 						activity_id,
 						create_ts,
 						input_val,
-						Err(&err.to_string()),
+						Err(&err_str),
 						self.loop_location(),
 					)
 					.await?;
 
+				metrics::ACTIVITY_ERRORS
+					.with_label_values(&[&self.name, A::NAME, &err_str])
+					.inc();
+				metrics::ACTIVITY_DURATION
+					.with_label_values(&[&self.name, A::NAME, &err_str])
+					.observe(dt);
+
 				Err(err)
 			}
 		}

lib/chirp-workflow/core/src/db/mod.rs

@@ -236,6 +236,7 @@ pub struct SignalRow {
 	pub signal_id: Uuid,
 	pub signal_name: String,
 	pub body: serde_json::Value,
+	pub create_ts: i64,
 }
 
 #[derive(sqlx::FromRow)]