added memory usage and loadavg metrics

Author: piotrek98

lib/node/metrics.ts

@@ -3,6 +3,8 @@ import { Metrics } from "../transport/metrics";
 import { TraceoOptions } from "../transport/options";
 import { cpu } from "./metrics/cpu-usage";
 import { loadRuntimeMetrics } from "./metrics/runtime-data";
+import * as os from "node:os";
+import { memory } from "./metrics/memory-sage";
 
 const DEFAULT_INTERVAL = 30; //seconds
 
@@ -17,6 +19,8 @@ const collectMetrics = (options: TraceoOptions) => {
   setInterval(() => {
     const metrics: Metrics = {
       cpuUsage: cpu.usage(),
+      memory: memory.usage(),
+      loadAvg: Number(os.loadavg()[0].toFixed(2)), //The load average is a Unix-specific concept. On Windows, the return value is always [0, 0, 0]
     };
 
     httpService.sendMetrics(metrics);

lib/node/metrics/memory-sage.ts

@@ -0,0 +1,18 @@
+import * as os from "node:os";
+
+const usage = () => {
+  const freeMemory = Math.round(os.freemem() / 1024 / 1024);
+  const totalMemory = Math.round(os.totalmem() / 1024 / 1024);
+
+  const usedMemory = Math.round(totalMemory - freeMemory);
+  const percentageUsed = Number(((usedMemory / totalMemory) * 100).toFixed(2));
+
+  return {
+    mb: usedMemory,
+    percentage: percentageUsed,
+  };
+};
+
+export const memory = {
+  usage,
+};

lib/transport/metrics.ts

@@ -1,3 +1,8 @@
 export interface Metrics {
   cpuUsage: number;
+  memory: {
+    mb: number;
+    percentage: number;
+  };
+  loadAvg?: number;
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "traceo-sdk",
-  "version": "0.0.116-beta",
+  "version": "0.0.117-beta",
   "license": "MIT",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",