feat: add memory monitoring for prometheus (#481)

monitoring_prometheus/__manifest__.py

@@ -4,7 +4,7 @@
 
 {
     "name": "Monitoring: Prometheus Metrics",
-    "version": "17.0.1.0.0",
+    "version": "18.0.1.0.0",
     "author": "Camptocamp,Odoo Community Association (OCA)",
     "license": "AGPL-3",
     "category": "category",
@@ -18,5 +18,5 @@
     "external_dependencies": {
         "python": ["prometheus_client"],
     },
-    "installable": False,
+    "installable": True,
 }

monitoring_prometheus/controllers/prometheus_metrics.py

@@ -5,8 +5,11 @@ from prometheus_client import generate_latest
 
 from odoo.http import Controller, route
 
+from ..models.psutils_helpers import get_process_info
+
 
 class PrometheusController(Controller):
     @route("/metrics", auth="public")
     def metrics(self):
+        get_process_info()
         return generate_latest()

monitoring_prometheus/models/__init__.py

@@ -1 +1,2 @@
 from . import ir_http
+from . import psutils_helpers

monitoring_prometheus/models/psutils_helpers.py

@@ -0,0 +1,39 @@
+import psutil
+from prometheus_client import Gauge
+
+MEMORY_USAGE_VMS = Gauge(
+    "odoo_worker_memory_user_vms_mb", "Memory usage in MB", ["process", "pid"]
+)
+
+MEMORY_USAGE_RSS = Gauge(
+    "odoo_worker_memory_user_rss_mb", "Memory usage in MB", ["process", "pid"]
+)
+
+
+def get_process_info():
+    for process in psutil.process_iter(
+        ["pid", "name", "memory_full_info", "cmdline", "nice"]
+    ):
+        try:
+            if process.info["memory_full_info"]:
+                if process.info["nice"] == 10:
+                    ProcessLabel = "workercron"
+                elif process.info["pid"] == 1:
+                    ProcessLabel = "dispatcher"
+                elif any("gevent" in x for x in process.info["cmdline"]):
+                    ProcessLabel = "gevent"
+                elif any("odoo" in x for x in process.info["cmdline"]):
+                    ProcessLabel = "workerhttp"
+                elif any("shell" in x for x in process.cmdline()):
+                    ProcessLabel = "OdooShell"
+                else:
+                    ProcessLabel = "other"
+                MEMORY_USAGE_VMS.labels(ProcessLabel, process.info["pid"]).set(
+                    process.info["memory_full_info"].rss // 1000000
+                )
+                MEMORY_USAGE_RSS.labels(ProcessLabel, process.info["pid"]).set(
+                    process.info["memory_full_info"].vms // 1000000
+                )
+
+        except (psutil.NoSuchProcess, psutil.AccessDenied, psutil.ZombieProcess):
+            continue