mgr/devicehealth: ensure we don't store empty objects

I'm not sure why devid would end up empty, but it is possible if we get
wonky data, and users seem to have seen empty objects in their pools,
so add a check!

Maybe-fixes: https://tracker.ceph.com/issues/41383
Signed-off-by: Sage Weil <sage@redhat.com>

diff --git a/src/pybind/mgr/devicehealth/module.py b/src/pybind/mgr/devicehealth/module.py
index 78bbc3166755fc037619089d01548e8004417f60..406d93ec52e89cd053a97b4ba130daf4568971af 100644 (file)
--- a/src/pybind/mgr/devicehealth/module.py
+++ b/src/pybind/mgr/devicehealth/module.py
@@ -316,7 +316,8 @@ class Module(MgrModule):
         if raw_smart_data:
             for device, raw_data in raw_smart_data.items():
                 data = self.extract_smart_features(raw_data)
-                self.put_device_metrics(ioctx, device, data)
+                if device and data:
+                    self.put_device_metrics(ioctx, device, data)
         ioctx.close()
         return 0, "", ""
 
@@ -341,7 +342,8 @@ class Module(MgrModule):
                     continue
                 did_device[device] = 1
                 data = self.extract_smart_features(raw_data)
-                self.put_device_metrics(ioctx, device, data)
+                if device and data:
+                    self.put_device_metrics(ioctx, device, data)
         ioctx.close()
         return 0, "", ""
 
@@ -360,7 +362,8 @@ class Module(MgrModule):
         if raw_smart_data:
             for device, raw_data in raw_smart_data.items():
                 data = self.extract_smart_features(raw_data)
-                self.put_device_metrics(ioctx, device, data)
+                if device and data:
+                    self.put_device_metrics(ioctx, device, data)
         ioctx.close()
         return 0, "", ""
 
@@ -385,6 +388,7 @@ class Module(MgrModule):
                     daemon_type, daemon_id, outb))
 
     def put_device_metrics(self, ioctx, devid, data):
+        assert devid
         old_key = datetime.utcnow() - timedelta(
             seconds=int(self.retention_period))
         prune = old_key.strftime(TIME_FORMAT)