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>
(cherry picked from commit 82414b3a42258b09defe2a88bc937a096439534f)

diff --git a/src/pybind/mgr/devicehealth/module.py b/src/pybind/mgr/devicehealth/module.py
index 092aa906388d45587e06a115bcf375877823b234..d187d0e6f7bce65fcc3c9752c649df27197bbcbd 100644 (file)
--- a/src/pybind/mgr/devicehealth/module.py
+++ b/src/pybind/mgr/devicehealth/module.py
@@ -318,7 +318,8 @@ 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, "", ""
 
@@ -340,7 +341,8 @@ 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, "", ""
 
@@ -359,7 +361,8 @@ 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, "", ""
 
@@ -384,6 +387,7 @@ 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)