chore: fix guard metrics (#2504)

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## Changes

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Author: MasterPtato

packages/edge/infra/edge-server/Cargo.toml

@@ -26,6 +26,9 @@ s3-util.workspace = true
 edge-monolith-workflow-worker.workspace = true
 pegboard-ws.workspace = true
 
+# Singleton
+pegboard-usage-metrics-publish.workspace = true
+
 # API
 api-edge-monolith-public.workspace = true
 api-edge-monolith-edge.workspace = true

packages/edge/infra/guard/core/src/proxy_service.rs

@@ -680,6 +680,11 @@ impl ProxyService {
 				self.handle_http_request(req, target).await
 			};
 
+			let status = match &res {
+				Ok(resp) => resp.status().as_u16().to_string(),
+				Err(_) => "error".to_string(),
+			};
+
 			// Record metrics
 			let duration_secs = start_time.elapsed().as_secs_f64();
 			metrics::PROXY_REQUEST_DURATION
@@ -691,16 +696,11 @@ impl ProxyService {
 			res
 		};
 
-		let status = match &res {
-			Ok(resp) => resp.status().as_u16().to_string(),
-			Err(err) => {
-				metrics::PROXY_REQUEST_ERROR
-					.with_label_values(&[&err.to_string()])
-					.inc();
-
-				"error".to_string()
-			}
-		};
+		if let Err(err) = &res {
+			metrics::PROXY_REQUEST_ERROR
+				.with_label_values(&[&err.to_string()])
+				.inc();
+		}
 
 		res
 	}

packages/edge/infra/guard/server/Cargo.toml

@@ -14,35 +14,35 @@ name = "rivet_guard"
 path = "src/lib.rs"
 
 [dependencies]
-rivet-guard-core.workspace = true
-tokio.workspace = true
 anyhow.workspace = true
-tracing.workspace = true
-uuid = { version = "1.3", features = ["v4"] }
-serde_json = "1.0"
+chirp-client.workspace = true
+chirp-workflow.workspace = true
 clap = { version = "4.3", features = ["derive"] }
-rivet-config.workspace = true
-rivet-logs.workspace = true
-rivet-runtime.workspace = true
-rivet-pools.workspace = true
-rivet-metrics.workspace = true
+cluster.workspace = true
+fdb-util.workspace = true
+foundationdb.workspace = true
 futures = "0.3.30"
+game-namespace-resolve-name-id = { path = "../../../../core/services/game/ops/namespace-resolve-name-id" }
 global-error.workspace = true
-cluster.workspace = true
-chirp-workflow.workspace = true
-chirp-client.workspace = true
-rivet-connection.workspace = true
-regex = "1.10.3"
 once_cell = "1.19.0"
 pegboard.workspace = true
-fdb-util.workspace = true
-foundationdb.workspace = true
-rustls-pemfile = "2.0.0"
-rustls = { version = "0.23.25" }
+regex = "1.10.3"
 rivet-cache.workspace = true
+rivet-config.workspace = true
+rivet-connection.workspace = true
+rivet-guard-core.workspace = true
+rivet-logs.workspace = true
+rivet-metrics.workspace = true
+rivet-pools.workspace = true
+rivet-runtime.workspace = true
 route = { path = "../../../../core/services/route" }
-game-namespace-resolve-name-id = { path = "../../../../core/services/game/ops/namespace-resolve-name-id" }
+rustls = { version = "0.23.25" }
+rustls-pemfile = "2.0.0"
+serde_json = "1.0"
+tokio.workspace = true
+tracing.workspace = true
 types-proto = { path = "../../../../common/types-proto/core", package = "types-proto" }
+uuid = { version = "1.3", features = ["v4"] }
 
 [dev-dependencies]
 uuid = { version = "1.3", features = ["v4", "fast-rng"] }

packages/edge/services/pegboard/standalone/usage-metrics-publish/src/lib.rs

@@ -118,6 +118,11 @@ pub async fn run_from_env(
 		env_usage.memory += actor.resources.memory_mib as u64;
 	}
 
+	// Clear old metrics because they will never be set to 0 (due to no actors being present and thus no
+	// metrics update)
+	pegboard::metrics::ENV_CPU_USAGE.reset();
+	pegboard::metrics::ENV_MEMORY_USAGE.reset();
+
 	// Insert metrics
 	for ((env_id, client_flavor), usage) in usage_by_env_and_flavor {
 		pegboard::metrics::ENV_CPU_USAGE